springcloud1新

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>cn.tedu</groupId>
    <artifactId>sp01-commons</artifactId>
    <version>1.0-SNAPSHOT</version>

    <dependencies>
        <dependency>
            <groupId>com.fasterxml.jackson.module</groupId>
            <artifactId>jackson-module-parameter-names</artifactId>
            <version>2.9.8</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.datatype</groupId>
            <artifactId>jackson-datatype-jdk8</artifactId>
            <version>2.9.8</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.datatype</groupId>
            <artifactId>jackson-datatype-jsr310</artifactId>
            <version>2.9.8</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.datatype</groupId>
            <artifactId>jackson-datatype-guava</artifactId>
            <version>2.9.8</version>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.12</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.26</version>
        </dependency>
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.9</version>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.0</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

package cn.tedu.sp01.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@NoArgsConstructor
@AllArgsConstructor
public class Item {
    private Integer id;
    private String name;
    private Integer number;
}

package cn.tedu.sp01.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.util.List;

@Data
@NoArgsConstructor
@AllArgsConstructor
public class Order {
    private String id;
    private User user;
    private List<Item> items;
}

package cn.tedu.sp01.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@NoArgsConstructor
@AllArgsConstructor
public class User {
    private Integer id;
    private String username;
    private String password;
}

package cn.tedu.web.util;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class CookieUtil {

    /**
     * @param response
     * @param name
     * @param value
     * @param maxAge
     */
    public static void setCookie(HttpServletResponse response,
                                 String name, String value, String domain, String path, int maxAge) {
        Cookie cookie = new Cookie(name, value);
        if(domain != null) {
            cookie.setDomain(domain);
        }
        cookie.setPath(path);
        cookie.setMaxAge(maxAge);
        response.addCookie(cookie);
    }
    public static void setCookie(HttpServletResponse response, String name, String value, int maxAge) {
        setCookie(response, name, value, null, "/", maxAge);
    }
    public static void setCookie(HttpServletResponse response, String name, String value) {
        setCookie(response, name, value, null, "/", 3600);
    }
    public static void setCookie(HttpServletResponse response, String name) {
        setCookie(response, name, "", null, "/", 3600);
    }

    /**
     * @param request
     * @param name
     * @return
     */
    public static String getCookie(HttpServletRequest request, String name) {
        String value = null;
        Cookie[] cookies = request.getCookies();
        if (null != cookies) {
            for (Cookie cookie : cookies) {
                if (cookie.getName().equals(name)) {
                    value = cookie.getValue();
                }
            }
        }
        return value;
    }

    /**
     * @param response
     * @param name
     * @return
     */
    public static void removeCookie(HttpServletResponse response, String name, String domain, String path) {
        setCookie(response, name, "", domain, path, 0);
    }

}

package cn.tedu.web.util;

import lombok.Getter;
import lombok.Setter;

@Getter
@Setter
public class JsonResult<T> {
    /** 成功 */
    public static final int SUCCESS = 200;

    /** 没有登录 */
    public static final int NOT_LOGIN = 400;

    /** 发生异常 */
    public static final int EXCEPTION = 401;

    /** 系统错误 */
    public static final int SYS_ERROR = 402;

    /** 参数错误 */
    public static final int PARAMS_ERROR = 403;

    /** 不支持或已经废弃 */
    public static final int NOT_SUPPORTED = 410;

    /** AuthCode错误 */
    public static final int INVALID_AUTHCODE = 444;

    /** 太频繁的调用 */
    public static final int TOO_FREQUENT = 445;

    /** 未知的错误 */
    public static final int UNKNOWN_ERROR = 499;

    private int code;
    private String msg;
    private T data;



    public static JsonResult build() {
        return new JsonResult();
    }
    public static JsonResult build(int code) {
        return new JsonResult().code(code);
    }
    public static JsonResult build(int code, String msg) {
        return new JsonResult<String>().code(code).msg(msg);
    }
    public static <T> JsonResult<T> build(int code, T data) {
        return new JsonResult<T>().code(code).data(data);
    }
    public static <T> JsonResult<T> build(int code, String msg, T data) {
        return new JsonResult<T>().code(code).msg(msg).data(data);
    }

    public JsonResult<T> code(int code) {
        this.code = code;
        return this;
    }
    public JsonResult<T> msg(String msg) {
        this.msg = msg;
        return this;
    }
    public JsonResult<T> data(T data) {
        this.data = data;
        return this;
    }


    public static JsonResult ok() {
        return build(SUCCESS);
    }
    public static JsonResult ok(String msg) {
        return build(SUCCESS, msg);
    }
    public static <T> JsonResult<T> ok(T data) {
        return build(SUCCESS, data);
    }
    public static JsonResult err() {
        return build(EXCEPTION);
    }
    public static JsonResult err(String msg) {
        return build(EXCEPTION, msg);
    }

    @Override
    public String toString() {
        return cn.tedu.web.util.JsonUtil.to(this);
    }
}

package cn.tedu.web.util;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Writer;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;

import org.apache.commons.lang3.StringUtils;

import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.fasterxml.jackson.databind.node.ObjectNode;
import com.fasterxml.jackson.datatype.guava.GuavaModule;
import com.fasterxml.jackson.datatype.jdk8.Jdk8Module;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
import com.fasterxml.jackson.module.paramnames.ParameterNamesModule;

import lombok.extern.slf4j.Slf4j;

@Slf4j
public class JsonUtil {
    private static ObjectMapper mapper;
    private static JsonInclude.Include DEFAULT_PROPERTY_INCLUSION = JsonInclude.Include.NON_DEFAULT;
    private static boolean IS_ENABLE_INDENT_OUTPUT = false;
    private static String CSV_DEFAULT_COLUMN_SEPARATOR = ",";
    static {
        try {
            initMapper();
            configPropertyInclusion();
            configIndentOutput();
            configCommon();
        } catch (Exception e) {
            log.error("jackson config error", e);
        }
    }

    private static void initMapper() {
        mapper = new ObjectMapper();
    }

    private static void configCommon() {
        config(mapper);
    }

    private static void configPropertyInclusion() {
        mapper.setSerializationInclusion(DEFAULT_PROPERTY_INCLUSION);
    }

    private static void configIndentOutput() {
        mapper.configure(SerializationFeature.INDENT_OUTPUT, IS_ENABLE_INDENT_OUTPUT);
    }

    private static void config(ObjectMapper objectMapper) {
        objectMapper.enable(JsonGenerator.Feature.WRITE_BIGDECIMAL_AS_PLAIN);
        objectMapper.enable(DeserializationFeature.ACCEPT_EMPTY_STRING_AS_NULL_OBJECT);
        objectMapper.enable(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY);
        objectMapper.enable(DeserializationFeature.FAIL_ON_READING_DUP_TREE_KEY);
        objectMapper.enable(DeserializationFeature.FAIL_ON_NUMBERS_FOR_ENUMS);
        objectMapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
        objectMapper.disable(DeserializationFeature.FAIL_ON_NULL_FOR_PRIMITIVES);
        objectMapper.disable(SerializationFeature.FAIL_ON_EMPTY_BEANS);
        objectMapper.enable(JsonParser.Feature.ALLOW_COMMENTS);
        objectMapper.disable(JsonGenerator.Feature.ESCAPE_NON_ASCII);
        objectMapper.enable(JsonGenerator.Feature.IGNORE_UNKNOWN);
        objectMapper.enable(JsonParser.Feature.ALLOW_UNQUOTED_FIELD_NAMES);
        objectMapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
        objectMapper.setDateFormat(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"));
        objectMapper.enable(JsonParser.Feature.ALLOW_SINGLE_QUOTES);
        objectMapper.registerModule(new ParameterNamesModule());
        objectMapper.registerModule(new Jdk8Module());
        objectMapper.registerModule(new JavaTimeModule());
        objectMapper.registerModule(new GuavaModule());
    }
    public static void setSerializationInclusion(JsonInclude.Include inclusion) {
        DEFAULT_PROPERTY_INCLUSION = inclusion;
        configPropertyInclusion();
    }

    public static void setIndentOutput(boolean isEnable) {
        IS_ENABLE_INDENT_OUTPUT = isEnable;
        configIndentOutput();
    }

    public static <V> V from(URL url, Class<V> c) {
        try {
            return mapper.readValue(url, c);
        } catch (IOException e) {
            log.error("jackson from error, url: {}, type: {}", url.getPath(), c, e);
            return null;
        }
    }

    public static <V> V from(InputStream inputStream, Class<V> c) {
        try {
            return mapper.readValue(inputStream, c);
        } catch (IOException e) {
            log.error("jackson from error, type: {}", c, e);
            return null;
        }
    }

    public static <V> V from(File file, Class<V> c) {
        try {
            return mapper.readValue(file, c);
        } catch (IOException e) {
            log.error("jackson from error, file path: {}, type: {}", file.getPath(), c, e);
            return null;
        }
    }

    public static <V> V from(Object jsonObj, Class<V> c) {
        try {
            return mapper.readValue(jsonObj.toString(), c);
        } catch (IOException e) {
            log.error("jackson from error, json: {}, type: {}", jsonObj.toString(), c, e);
            return null;
        }
    }

    public static <V> V from(String json, Class<V> c) {
        try {
            return mapper.readValue(json, c);
        } catch (IOException e) {
            log.error("jackson from error, json: {}, type: {}", json, c, e);
            return null;
        }
    }

    public static <V> V from(URL url, TypeReference<V> type) {
        try {
            return mapper.readValue(url, type);
        } catch (IOException e) {
            log.error("jackson from error, url: {}, type: {}", url.getPath(), type, e);
            return null;
        }
    }

    public static <V> V from(InputStream inputStream, TypeReference<V> type) {
        try {
            return mapper.readValue(inputStream, type);
        } catch (IOException e) {
            log.error("jackson from error, type: {}", type, e);
            return null;
        }
    }

    public static <V> V from(File file, TypeReference<V> type) {
        try {
            return mapper.readValue(file, type);
        } catch (IOException e) {
            log.error("jackson from error, file path: {}, type: {}", file.getPath(), type, e);
            return null;
        }
    }

    public static <V> V from(Object jsonObj, TypeReference<V> type) {
        try {
            return mapper.readValue(jsonObj.toString(), type);
        } catch (IOException e) {
            log.error("jackson from error, json: {}, type: {}", jsonObj.toString(), type, e);
            return null;
        }
    }

    public static <V> V from(String json, TypeReference<V> type) {
        try {
            return mapper.readValue(json, type);
        } catch (IOException e) {
            log.error("jackson from error, json: {}, type: {}", json, type, e);
            return null;
        }
    }

    public static <V> String to(List<V> list) {
        try {
            return mapper.writeValueAsString(list);
        } catch (JsonProcessingException e) {
            log.error("jackson to error, obj: {}", list, e);
            return null;
        }
    }

    public static <V> String to(V v) {
        try {
            return mapper.writeValueAsString(v);
        } catch (JsonProcessingException e) {
            log.error("jackson to error, obj: {}", v, e);
            return null;
        }
    }

    public static <V> void toFile(String path, List<V> list) {
        try (Writer writer = new FileWriter(new File(path), true)) {
            mapper.writer().writeValues(writer).writeAll(list);
            writer.flush();
        } catch (Exception e) {
            log.error("jackson to file error, path: {}, list: {}", path, list, e);
        }
    }

    public static <V> void toFile(String path, V v) {
        try (Writer writer = new FileWriter(new File(path), true)) {
            mapper.writer().writeValues(writer).write(v);
            writer.flush();
        } catch (Exception e) {
            log.error("jackson to file error, path: {}, obj: {}", path, v, e);
        }
    }

    public static String getString(String json, String key) {
        if (StringUtils.isEmpty(json)) {
            return null;
        }
        try {
            JsonNode node = mapper.readTree(json);
            if (null != node) {
                return node.get(key).toString();
            } else {
                return null;
            }
        } catch (IOException e) {
            log.error("jackson get string error, json: {}, key: {}", json, key, e);
            return null;
        }
    }

    public static Integer getInt(String json, String key) {
        if (StringUtils.isEmpty(json)) {
            return null;
        }
        try {
            JsonNode node = mapper.readTree(json);
            if (null != node) {
                return node.get(key).intValue();
            } else {
                return null;
            }
        } catch (IOException e) {
            log.error("jackson get int error, json: {}, key: {}", json, key, e);
            return null;
        }
    }

    public static Long getLong(String json, String key) {
        if (StringUtils.isEmpty(json)) {
            return null;
        }
        try {
            JsonNode node = mapper.readTree(json);
            if (null != node) {
                return node.get(key).longValue();
            } else {
                return null;
            }
        } catch (IOException e) {
            log.error("jackson get long error, json: {}, key: {}", json, key, e);
            return null;
        }
    }

    public static Double getDouble(String json, String key) {
        if (StringUtils.isEmpty(json)) {
            return null;
        }
        try {
            JsonNode node = mapper.readTree(json);
            if (null != node) {
                return node.get(key).doubleValue();
            } else {
                return null;
            }
        } catch (IOException e) {
            log.error("jackson get double error, json: {}, key: {}", json, key, e);
            return null;
        }
    }

    public static BigInteger getBigInteger(String json, String key) {
        if (StringUtils.isEmpty(json)) {
            return new BigInteger(String.valueOf(0.00));
        }
        try {
            JsonNode node = mapper.readTree(json);
            if (null != node) {
                return node.get(key).bigIntegerValue();
            } else {
                return null;
            }
        } catch (IOException e) {
            log.error("jackson get biginteger error, json: {}, key: {}", json, key, e);
            return null;
        }
    }

    public static BigDecimal getBigDecimal(String json, String key) {
        if (StringUtils.isEmpty(json)) {
            return null;
        }
        try {
            JsonNode node = mapper.readTree(json);
            if (null != node) {
                return node.get(key).decimalValue();
            } else {
                return null;
            }
        } catch (IOException e) {
            log.error("jackson get bigdecimal error, json: {}, key: {}", json, key, e);
            return null;
        }
    }

    public static boolean getBoolean(String json, String key) {
        if (StringUtils.isEmpty(json)) {
            return false;
        }
        try {
            JsonNode node = mapper.readTree(json);
            if (null != node) {
                return node.get(key).booleanValue();
            } else {
                return false;
            }
        } catch (IOException e) {
            log.error("jackson get boolean error, json: {}, key: {}", json, key, e);
            return false;
        }
    }

    public static byte[] getByte(String json, String key) {
        if (StringUtils.isEmpty(json)) {
            return null;
        }
        try {
            JsonNode node = mapper.readTree(json);
            if (null != node) {
                return node.get(key).binaryValue();
            } else {
                return null;
            }
        } catch (IOException e) {
            log.error("jackson get byte error, json: {}, key: {}", json, key, e);
            return null;
        }
    }

    public static <T> ArrayList<T> getList(String json, String key) {
        if (StringUtils.isEmpty(json)) {
            return null;
        }
        String string = getString(json, key);
        return from(string, new TypeReference<ArrayList<T>>() {});
    }

    public static <T> String add(String json, String key, T value) {
        try {
            JsonNode node = mapper.readTree(json);
            add(node, key, value);
            return node.toString();
        } catch (IOException e) {
            log.error("jackson add error, json: {}, key: {}, value: {}", json, key, value, e);
            return json;
        }
    }

    private static <T> void add(JsonNode jsonNode, String key, T value) {
        if (value instanceof String) {
            ((ObjectNode) jsonNode).put(key, (String) value);
        } else if (value instanceof Short) {
            ((ObjectNode) jsonNode).put(key, (Short) value);
        } else if (value instanceof Integer) {
            ((ObjectNode) jsonNode).put(key, (Integer) value);
        } else if (value instanceof Long) {
            ((ObjectNode) jsonNode).put(key, (Long) value);
        } else if (value instanceof Float) {
            ((ObjectNode) jsonNode).put(key, (Float) value);
        } else if (value instanceof Double) {
            ((ObjectNode) jsonNode).put(key, (Double) value);
        } else if (value instanceof BigDecimal) {
            ((ObjectNode) jsonNode).put(key, (BigDecimal) value);
        } else if (value instanceof BigInteger) {
            ((ObjectNode) jsonNode).put(key, (BigInteger) value);
        } else if (value instanceof Boolean) {
            ((ObjectNode) jsonNode).put(key, (Boolean) value);
        } else if (value instanceof byte[]) {
            ((ObjectNode) jsonNode).put(key, (byte[]) value);
        } else {
            ((ObjectNode) jsonNode).put(key, to(value));
        }
    }

    public static String remove(String json, String key) {
        try {
            JsonNode node = mapper.readTree(json);
            ((ObjectNode) node).remove(key);
            return node.toString();
        } catch (IOException e) {
            log.error("jackson remove error, json: {}, key: {}", json, key, e);
            return json;
        }
    }

    public static <T> String update(String json, String key, T value) {
        try {
            JsonNode node = mapper.readTree(json);
            ((ObjectNode) node).remove(key);
            add(node, key, value);
            return node.toString();
        } catch (IOException e) {
            log.error("jackson update error, json: {}, key: {}, value: {}", json, key, value, e);
            return json;
        }
    }

    public static String format(String json) {
        try {
            JsonNode node = mapper.readTree(json);
            return mapper.writerWithDefaultPrettyPrinter().writeValueAsString(node);
        } catch (IOException e) {
            log.error("jackson format json error, json: {}", json, e);
            return json;
        }
    }

    public static boolean isJson(String json) {
        try {
            mapper.readTree(json);
            return true;
        } catch (Exception e) {
            log.error("jackson check json error, json: {}", json, e);
            return false;
        }
    }

    private static InputStream getResourceStream(String name) {
        return JsonUtil.class.getClassLoader().getResourceAsStream(name);
    }

    private static InputStreamReader getResourceReader(InputStream inputStream) {
        if (null == inputStream) {
            return null;
        }
        return new InputStreamReader(inputStream, StandardCharsets.UTF_8);
    }
}

package cn.tedu.sp01.service;

import cn.tedu.sp01.pojo.Item;

import java.util.List;

public interface ItemService {
    List<Item> getItems(String orderId);
    void decreaseNumber(List<Item> items);
}

package cn.tedu.sp01.service;

import cn.tedu.sp01.pojo.Order;

public interface OrderService {
    Order getOrder(String orderId);

    void addOrder(Order order);
}

package cn.tedu.sp01.service;

import cn.tedu.sp01.pojo.User;

public interface UserService {
    User getUser(Integer userId);

    void addScore(Integer userId, Integer score);
}

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <parent>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-parent</artifactId>
      <version>2.3.4.RELEASE</version>
      <relativePath/> <!-- lookup parent from repository -->
   </parent>
   <groupId>cn.tedu</groupId>
   <artifactId>sp02-itemservice</artifactId>
   <version>0.0.1-SNAPSHOT</version>
   <name>sp02-itemservice</name>
   <description>Demo project for Spring Boot</description>

   <properties>
      <java.version>1.8</java.version>
   </properties>

   <dependencies>
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-web</artifactId>
      </dependency>

      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-test</artifactId>
         <scope>test</scope>
         <exclusions>
            <exclusion>
               <groupId>org.junit.vintage</groupId>
               <artifactId>junit-vintage-engine</artifactId>
            </exclusion>
         </exclusions>
      </dependency>
      <dependency>
         <groupId>cn.tedu</groupId>
         <artifactId>sp01-commons</artifactId>
         <version>1.0-SNAPSHOT</version>
      </dependency>

      <!--    安装 editstarters  alt+insert 选择 edit starters   -->
      <dependency>
         <groupId>org.springframework.cloud</groupId>
         <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
      </dependency>
   </dependencies>

   <build>
      <plugins>
         <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
         </plugin>
      </plugins>
   </build>
   <dependencyManagement>
      <dependencies>
         <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>Hoxton.SR8</version>
            <type>pom</type>
            <scope>import</scope>
         </dependency>
      </dependencies>
   </dependencyManagement>

</project>

# html xml
# yaml yet another markup language 腋毛

# 向注册中心注册的服务名
spring:
  application:
    name: item-service

server:
  port: 8001

# eureka连接地址
# defaultZone 默认地点
# 其他地点配置，需要由云服务来提供
eureka:
  client:
    service-url:
      defaultZone: http://eureka1:2001/eureka, http://eureka2:2002/eureka

package cn.tedu.sp02;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class Sp02ItemserviceApplication {

   public static void main(String[] args) {
      SpringApplication.run(Sp02ItemserviceApplication.class, args);
   }

}

package cn.tedu.sp02.item.service;

import cn.tedu.sp01.pojo.Item;
import cn.tedu.sp01.service.ItemService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.List;

@Service
@Slf4j
public class ItemServiceImpl implements ItemService {
    // 根据订单id获取订单的商品列表
    @Override
    public List<Item> getItems(String orderId) {
        ArrayList<Item> items = new ArrayList<>();
        items.add(new Item(1,"商品1",1));
        items.add(new Item(2,"商品2",3));
        items.add(new Item(3,"商品3",5));
        items.add(new Item(4,"商品4",2));
        items.add(new Item(5,"商品5",1));
        return items;
    }

    // 减少商品库存
    @Override
    public void decreaseNumber(List<Item> items) {
        for (Item item:items) {
            log.info("减少商品库存： "+item);
        }
    }
}

package cn.tedu.sp02.item.controller;

import cn.tedu.sp01.pojo.Item;
import cn.tedu.sp01.service.ItemService;
import cn.tedu.web.util.JsonResult;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.*;

import javax.annotation.PostConstruct;
import java.util.List;
import java.util.Random;

@RestController
@Slf4j
public class ItemController {
    /*
    测试负载均衡时，在浏览器显示端口号
     */
    @Value("${server.port}")
    private int port;
    @Autowired
    private ItemService itemService;

    @GetMapping("/{orderId}") //和下面一行等价
    //@RequestMapping(path="/{orderId}",method = RequestMethod.GET)  // GET

    //@RequestMapping("/{orderId}")  // GET、POST

    public JsonResult<List<Item>> getItems(@PathVariable String orderId) throws InterruptedException {
        log.info("获取订单的商品列表, orderId="+orderId);

        //随机的延迟
        if (Math.random() < 0.9) {
            //延迟
            long t = new Random().nextInt(5000);
            log.info("延迟： "+t);
            Thread.sleep(t);
        }

        List<Item> items = itemService.getItems(orderId); //订单的商品列表
        return JsonResult.ok().msg("port="+port).data(items);
    }

    /*
    @RequestBody 完整接收请求协议体的内容，转成商品集合
     */
    @PostMapping("/decreaseNumber")
    public JsonResult<?> decreaseNumber(@RequestBody List<Item> items) {
        itemService.decreaseNumber(items); //减少商品库存
        return JsonResult.ok().msg("减少商品库存成功");
    }

}

package cn.tedu.sp02;

import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;

@SpringBootTest
class Sp02ItemserviceApplicationTests {

   @Test
   void contextLoads() {
   }

}

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <parent>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-parent</artifactId>
      <version>2.3.4.RELEASE</version>
      <relativePath/> <!-- lookup parent from repository -->
   </parent>
   <groupId>cn.tedu</groupId>
   <artifactId>sp03-userservice</artifactId>
   <version>0.0.1-SNAPSHOT</version>
   <name>sp03-userservice</name>
   <description>Demo project for Spring Boot</description>

   <properties>
      <java.version>1.8</java.version>
   </properties>

   <dependencies>
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-web</artifactId>
      </dependency>

      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-test</artifactId>
         <scope>test</scope>
         <exclusions>
            <exclusion>
               <groupId>org.junit.vintage</groupId>
               <artifactId>junit-vintage-engine</artifactId>
            </exclusion>
         </exclusions>
      </dependency>
      <dependency>
         <groupId>cn.tedu</groupId>
         <artifactId>sp01-commons</artifactId>
         <version>1.0-SNAPSHOT</version>
      </dependency>
      <dependency>
         <groupId>org.springframework.cloud</groupId>
         <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
      </dependency>


   </dependencies>

   <build>
      <plugins>
         <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
         </plugin>
      </plugins>
   </build>
   <dependencyManagement>
      <dependencies>
         <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>Hoxton.SR8</version>
            <type>pom</type>
            <scope>import</scope>
         </dependency>
      </dependencies>
   </dependencyManagement>

</project>

spring:
  application:
    name: user-service

server:
  port: 8101

# 自定义属性
# 测试用的用户数据
sp:
  user-service:
    users: "[{\"id\":7, \"username\":\"abc\",\"password\":\"123\"},{\"id\":8, \"username\":\"def\",\"password\":\"456\"},{\"id\":9, \"username\":\"ghi\",\"password\":\"789\"}]"

eureka:
  client:
    service-url:
      defaultZone: http://eureka1:2001/eureka, http://eureka2:2002/eureka

package cn.tedu.sp03;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class Sp03UserserviceApplication {

   public static void main(String[] args) {
      SpringApplication.run(Sp03UserserviceApplication.class, args);
   }

}

package cn.tedu.sp03.user.service;

import cn.tedu.sp01.pojo.User;
import cn.tedu.sp01.service.UserService;
import cn.tedu.web.util.JsonUtil;
import com.fasterxml.jackson.core.type.TypeReference;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
@Slf4j
public class UserServiceImpl implements UserService {
    @Value("${sp.user-service.users}")
    private String userJson; //yml配置中的测试用用户数据

    //根据用户id获取用户
    @Override
    public User getUser(Integer userId) {
        log.info("获取用户，userId="+userId+", userJson="+userJson);
        //从测试用的用户数据中寻找
        List<User> list = JsonUtil.from(userJson, new TypeReference<List<User>>() {});
        for (User u:list) {
            if (u.getId().equals(userId)) {
                return u;
            }
        }

        //找不到，就返回一个写死的用户
        return new User(userId, "用户名"+userId, "密码"+userId);
    }

    //增加用户积分
    @Override
    public void addScore(Integer userId, Integer score) {
        log.info("增加用户积分，userId="+userId+", score="+score);
    }
}

package cn.tedu.sp03.user.controller;

import cn.tedu.sp01.pojo.User;
import cn.tedu.sp01.service.UserService;
import cn.tedu.web.util.JsonResult;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;

@RestController
@Slf4j
public class UserController {
    @Autowired
    private UserService userService;
    @GetMapping("/{userId}")
    public JsonResult<User> getUser(@PathVariable Integer userId) {
        User user = userService.getUser(userId); //获取用户
        return JsonResult.ok().data(user);
    }

    //      http://localhsot:8101/8/score?score=1000
    @GetMapping("/{userId}/score")
    public JsonResult<?> addScore(@PathVariable Integer userId, Integer score) {
        userService.addScore(userId, score); //增加用户积分
        return JsonResult.ok().msg("增加用户积分成功");   // "{code:200, msg:'xxxxxxx', data:null}"
    }

}

package cn.tedu.sp03;

import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;

@SpringBootTest
class Sp03UserserviceApplicationTests {

   @Test
   void contextLoads() {
   }

}

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <parent>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-parent</artifactId>
      <version>2.3.4.RELEASE</version>
      <relativePath/> <!-- lookup parent from repository -->
   </parent>
   <groupId>cn.tedu</groupId>
   <artifactId>sp04-orderservice</artifactId>
   <version>0.0.1-SNAPSHOT</version>
   <name>sp04-orderservice</name>
   <description>Demo project for Spring Boot</description>

   <properties>
      <java.version>1.8</java.version>
   </properties>

   <dependencies>
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-web</artifactId>
      </dependency>

      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-test</artifactId>
         <scope>test</scope>
         <exclusions>
            <exclusion>
               <groupId>org.junit.vintage</groupId>
               <artifactId>junit-vintage-engine</artifactId>
            </exclusion>
         </exclusions>
      </dependency>
      <dependency>
         <groupId>cn.tedu</groupId>
         <artifactId>sp01-commons</artifactId>
         <version>1.0-SNAPSHOT</version>
      </dependency>
      <dependency>
         <groupId>org.springframework.cloud</groupId>
         <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
      </dependency>

   </dependencies>

   <build>
      <plugins>
         <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
         </plugin>
      </plugins>
   </build>
   <dependencyManagement>
      <dependencies>
         <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>Hoxton.SR8</version>
            <type>pom</type>
            <scope>import</scope>
         </dependency>
      </dependencies>
   </dependencyManagement>

</project>

package cn.tedu.sp04;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class Sp04OrderserviceApplication {

   public static void main(String[] args) {
      SpringApplication.run(Sp04OrderserviceApplication.class, args);
   }

}

package cn.tedu.sp04.order.service;

import cn.tedu.sp01.pojo.Order;
import cn.tedu.sp01.service.OrderService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;

@Service
@Slf4j
public class OrderServiceImpl implements OrderService {
    @Override
    public Order getOrder(String orderId) {
        /*
        获取订单
        调用用户获取用户数据，调用商品获取商品列表
         */

        //TODO: 远程调用商品服务，获取商品
        //TODO: 远程调用用户，获取用户数据

        Order order = new Order();
        order.setId(orderId);
        //order.setItems(商品列表);
        //order.setUser(用户);
        return order;
    }
    @Override
    public void addOrder(Order order) {
        log.info("添加订单： "+order);
    }
}

package cn.tedu.sp04.order.controller;

import cn.tedu.sp01.pojo.Item;
import cn.tedu.sp01.pojo.Order;
import cn.tedu.sp01.pojo.User;
import cn.tedu.sp01.service.OrderService;
import cn.tedu.web.util.JsonResult;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;

import java.util.Arrays;

@RestController
@Slf4j
public class OrderController {
    @Autowired
    private OrderService orderService;
    //根据订单id获取订单
    @GetMapping("/{orderId}")
    public JsonResult<Order> getOrder(@PathVariable String orderId) {
        log.info("获取订单： orderId"+orderId);

        Order order = orderService.getOrder(orderId);
        return JsonResult.ok().data(order);
    }
    //添加订单，demo演示，不接收任何参数，数据在方法中写死
    @GetMapping("/")
    public JsonResult<?> addOrder() {
        //订单对象中包含： 订单id,用户,购买的商品
        Order order = new Order(
                "6u5u645y34",
                new User(8,"用户8", "密码8"),
                Arrays.asList(new Item[]{
                        new Item(1, "商品1", 2),
                        new Item(2, "商品2", 1),
                        new Item(3, "商品3", 1),
                        new Item(4, "商品4", 4),
                        new Item(5, "商品5", 3)
                }));
        orderService.addOrder(order);
        return JsonResult.ok().msg("添加订单成功");
    }

}

package cn.tedu.sp04;

import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;

@SpringBootTest
class Sp04OrderserviceApplicationTests {

   @Test
   void contextLoads() {
   }

}

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <parent>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-parent</artifactId>
      <version>2.3.4.RELEASE</version>
      <relativePath/> <!-- lookup parent from repository -->
   </parent>
   <groupId>cn.tedu</groupId>
   <artifactId>sp05-eureka</artifactId>
   <version>0.0.1-SNAPSHOT</version>
   <name>sp05-eureka</name>
   <description>Demo project for Spring Boot</description>

   <properties>
      <java.version>1.8</java.version>
      <spring-cloud.version>Hoxton.SR8</spring-cloud.version>
   </properties>

   <dependencies>
      <dependency>
         <groupId>org.springframework.cloud</groupId>
         <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
      </dependency>

      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-test</artifactId>
         <scope>test</scope>
         <exclusions>
            <exclusion>
               <groupId>org.junit.vintage</groupId>
               <artifactId>junit-vintage-engine</artifactId>
            </exclusion>
         </exclusions>
      </dependency>
   </dependencies>

   <dependencyManagement>
      <dependencies>
         <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>${spring-cloud.version}</version>
            <type>pom</type>
            <scope>import</scope>
         </dependency>
      </dependencies>
   </dependencyManagement>

   <build>
      <plugins>
         <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
         </plugin>
      </plugins>
   </build>

</project>

spring:
  application:
    name: eureka-server

server:
  port: 2001
eureka:
  server:
    enable-self-preservation: false #关闭保护模式
  instance:
    hostname: eureka1  #集群服务器间用主机名区分
  client:
    #单台服务器，不向自己注册，不从自己拉取
    register-with-eureka: false
    fetch-registry: false

# application-eureka1.yml
# 激活当前profile: --spring.profiles.active=eureka1

eureka:
  instance:
    hostname: eureka1
  client:
    register-with-eureka: true
    fetch-registry: true
    service-url:
      defaultZone: http://eureka2:2002/eureka

# application-eureka2.yml
# 激活当前profile: --spring.profiles.active=eureka2

eureka:
  instance:
    hostname: eureka2
  client:
    register-with-eureka: true
    fetch-registry: true
    service-url:
      defaultZone: http://eureka1:2001/eureka

package cn.tedu.sp05;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;

@EnableEurekaServer
@SpringBootApplication
public class Sp05EurekaApplication {

   public static void main(String[] args) {
      SpringApplication.run(Sp05EurekaApplication.class, args);
   }

}

package cn.tedu.sp05;

import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;

@SpringBootTest
class Sp05EurekaApplicationTests {

   @Test
   void contextLoads() {
   }

}

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <parent>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-parent</artifactId>
      <version>2.3.4.RELEASE</version>
      <relativePath/> <!-- lookup parent from repository -->
   </parent>
   <groupId>cn.tedu</groupId>
   <artifactId>sp06-ribbon</artifactId>
   <version>0.0.1-SNAPSHOT</version>
   <name>sp06-ribbon</name>
   <description>Demo project for Spring Boot</description>

   <properties>
      <java.version>1.8</java.version>
      <spring-cloud.version>Hoxton.SR8</spring-cloud.version>
   </properties>

   <dependencies>
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-web</artifactId>
      </dependency>
      <dependency>
         <groupId>org.springframework.cloud</groupId>
         <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
      </dependency>

      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-test</artifactId>
         <scope>test</scope>
         <exclusions>
            <exclusion>
               <groupId>org.junit.vintage</groupId>
               <artifactId>junit-vintage-engine</artifactId>
            </exclusion>
         </exclusions>
      </dependency>
      <dependency>
         <groupId>cn.tedu</groupId>
         <artifactId>sp01-commons</artifactId>
         <version>1.0-SNAPSHOT</version>
      </dependency>
      <dependency>
         <groupId>org.springframework.retry</groupId>
         <artifactId>spring-retry</artifactId>
      </dependency>
      <dependency>
         <groupId>org.springframework.cloud</groupId>
         <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
      </dependency>
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-actuator</artifactId>
      </dependency>


   </dependencies>

   <dependencyManagement>
      <dependencies>
         <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>${spring-cloud.version}</version>
            <type>pom</type>
            <scope>import</scope>
         </dependency>
      </dependencies>
   </dependencyManagement>

   <build>
      <plugins>
         <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
         </plugin>
      </plugins>
   </build>

</project>

spring:
  application:
    name: ribbon

server:
  port: 3001

eureka:
  client:
    service-url:
      defaultZone: http://eureka1:2001/eureka,http://eureka2:2002/eureka

ribbon:
  # 单台服务器重试次数
  MaxAutoRetries: 1
  # 更换服务器的次数
  MaxAutoRetriesNextServer: 2

#hystrix:
#  command:
#    default:
#      execution:
#        isolation:
#          thread:
#            timeoutInMilliseconds: 500  #默认1000
management:
  endpoints:
    web:
      exposure:
        include: hystrix.stream #"*"
          #- beans
          #- env

package cn.tedu.sp06;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.context.annotation.Bean;
import org.springframework.http.client.SimpleClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;

@EnableCircuitBreaker
@SpringBootApplication
public class Sp06RibbonApplication {

   public static void main(String[] args) {
      SpringApplication.run(Sp06RibbonApplication.class, args);
   }

   /*
   可以放在启动类中，
   或者也可以放在自定义的自动配置类
    */
   @Bean
   @LoadBalanced //ribbon的注解，对RestTemplate进行增强
   public RestTemplate restTemplate() {
      SimpleClientHttpRequestFactory f = new SimpleClientHttpRequestFactory();
      f.setConnectTimeout(1000); //连接超时
      f.setReadTimeout(1000);    //等待响应超时

      return new RestTemplate(f);
   }
}

package cn.tedu.sp06.controller;

import cn.tedu.sp01.pojo.Item;
import cn.tedu.sp01.pojo.Order;
import cn.tedu.sp01.pojo.User;
import cn.tedu.web.util.JsonResult;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.client.RestTemplate;

import java.util.List;

@RestController
@Slf4j
public class RibbonController {
    @Autowired
    private RestTemplate rt;

    // 调用远程的商品服务
    // 如果远程调用失败，跳转到另一段代码去执行
    @HystrixCommand(fallbackMethod = "getItemsFB")
    @GetMapping("/item-service/{orderId}")
    public JsonResult<List<Item>> getItems(@PathVariable String orderId) {
        //调用远程服务
        // {1} 是 RestTemplate 定义的一种占位符格式，后面第三个参数 orderId 会对占位符进行填充
        return rt.getForObject("http://item-service/{1}",JsonResult.class,orderId);
    }
    @HystrixCommand(fallbackMethod = "decreaseNumberFB")
    @PostMapping("/item-service/decreaseNumber")
    public JsonResult<?> decreaseNumber(@RequestBody List<Item> items) {
        // 调用商品服务，减少商品库存
        //items post请求协议体数据
        return rt.postForObject("http://item-service/decreaseNumber",items, JsonResult.class);
    }
    @HystrixCommand(fallbackMethod = "getUserFB")
    @GetMapping("/user-service/{userId}")
    public JsonResult<User> getUser(@PathVariable Integer userId) {
        return rt.getForObject("http://user-service/{1}", JsonResult.class, userId);
    }
    @HystrixCommand(fallbackMethod = "addScoreFB")
    @GetMapping("/user-service/{userId}/score")
    public JsonResult<?> addScore(@PathVariable Integer userId, Integer score) {
        return rt.getForObject("http://user-service/{1}/score?score={2}", JsonResult.class, userId, score);
    }
    @HystrixCommand(fallbackMethod = "getOrderFB")
    @GetMapping("/order-service/{orderId}")
    public JsonResult<Order> getOrder(@PathVariable String orderId) {
        return rt.getForObject("http://order-service/{1}", JsonResult.class, orderId);
    }
    @HystrixCommand(fallbackMethod = "addOrderFB")
    @GetMapping("/order-service/")
    public JsonResult<?> addOrder() {
        return rt.getForObject("http://order-service/", JsonResult.class);
    }

    //
    public JsonResult<List<Item>> getItemsFB(String orderId) {
        return JsonResult.err().msg("获取订单的商品列表失败");
    }
    public JsonResult<?> decreaseNumberFB(List<Item> items) {
        return JsonResult.err().msg("减少商品库存失败");
    }
    public JsonResult<User> getUserFB(Integer userId) {
        return JsonResult.err().msg("获取用户失败");
    }
    public JsonResult<?> addScoreFB(Integer userId, Integer score) {
        return JsonResult.err().msg("增加用户积分失败");
    }
    public JsonResult<Order> getOrderFB(String orderId) {
        return JsonResult.err().msg("获取订单失败");
    }
    public JsonResult<?> addOrderFB() {
        return JsonResult.err().msg("保存订单失败");
    }

}

package cn.tedu.sp06;

import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;

@SpringBootTest
class Sp06RibbonApplicationTests {

   @Test
   void contextLoads() {
   }

}

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <parent>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-parent</artifactId>
      <version>2.3.4.RELEASE</version>
      <relativePath/> <!-- lookup parent from repository -->
   </parent>
   <groupId>cn.tedu</groupId>
   <artifactId>sp08-hystrix-dashboard</artifactId>
   <version>0.0.1-SNAPSHOT</version>
   <name>sp08-hystrix-dashboard</name>
   <description>Demo project for Spring Boot</description>

   <properties>
      <java.version>1.8</java.version>
      <spring-cloud.version>Hoxton.SR8</spring-cloud.version>
   </properties>

   <dependencies>
      <dependency>
         <groupId>org.springframework.cloud</groupId>
         <artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
      </dependency>

      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-test</artifactId>
         <scope>test</scope>
         <exclusions>
            <exclusion>
               <groupId>org.junit.vintage</groupId>
               <artifactId>junit-vintage-engine</artifactId>
            </exclusion>
         </exclusions>
      </dependency>
   </dependencies>

   <dependencyManagement>
      <dependencies>
         <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>${spring-cloud.version}</version>
            <type>pom</type>
            <scope>import</scope>
         </dependency>
      </dependencies>
   </dependencyManagement>

   <build>
      <plugins>
         <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
         </plugin>
      </plugins>
   </build>

</project>

spring:
  application:
    name: hystrix-dashboard

server:
  port: 4001

# 配置允许监控的主机地址
hystrix:
  dashboard:
    proxy-stream-allow-list: localhost

package cn.tedu.sp08;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard;

@EnableHystrixDashboard
@SpringBootApplication
public class Sp08HystrixDashboardApplication {

   public static void main(String[] args) {
      SpringApplication.run(Sp08HystrixDashboardApplication.class, args);
   }

}

package cn.tedu.sp08;

import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;

@SpringBootTest
class Sp08HystrixDashboardApplicationTests {

   @Test
   void contextLoads() {
   }

}