【SpringCloud】【Hoxton】基础环境准备

01 基础环境准备
02 一文读懂Eureka
03 Zookeeper注册中心
04 Consule注册中心
05 Ribbon
06 OpenFegin
07 Hystrix全面解析
08 Gateway全面解析
09 Config配置中心
10 Bus消息总线

1 引言

记2020年3月8日 SpringCloud 最新版为Hoxton SR3。

2 创建父工程

(1) spring-cloud

(2) pom文件

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
    <junit.version>4.12</junit.version>
    <hutool.version>5.1.0</hutool.version>
    <commons.version>3.4</commons.version>
    <javax.version>2.1.0</javax.version>
    <log4j.version>1.2.17</log4j.version>
    <lombok.version>1.18.6</lombok.version>
    <mysql.version>8.0.11</mysql.version>
    <druid.verison>1.1.16</druid.verison>
    <mybatis.spring.boot.verison>1.3.1</mybatis.spring.boot.verison>
    <tk.mybatis.verison>2.1.5</tk.mybatis.verison>
    <pagehelper.verison>1.2.10</pagehelper.verison>
    <spring-cloud.version>Hoxton.SR3</spring-cloud.version>
    <spring-boot.version>2.2.5.RELEASE</spring-boot.version>
    <spring-cloud-alibaba.version>2.1.0.RELEASE</spring-cloud-alibaba.version>
</properties>
<dependencyManagement>
    <dependencies>
        <!--spring boot-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-dependencies</artifactId>
            <version>${spring-boot.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
        <!--spring cloud-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>${spring-cloud.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
        <!--spring cloud alibaba 2.1.0.RELEASE-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-alibaba-dependencies</artifactId>
            <version>${spring-cloud-alibaba.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
        <!--mysql-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql.version}</version>
        </dependency>
        <!--druid-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>${druid.verison}</version>
        </dependency>
        <!--lombok-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>${lombok.version}</version>
        </dependency>
        <!--junit-->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>${junit.version}</version>
        </dependency>
        <!--日志-->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>${log4j.version}</version>
        </dependency>
        <!--mybatis-->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>${mybatis.spring.boot.verison}</version>
        </dependency>
        <dependency>
            <groupId>tk.mybatis</groupId>
            <artifactId>mapper-spring-boot-starter</artifactId>
            <version>${tk.mybatis.verison}</version>
        </dependency>
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper-spring-boot-starter</artifactId>
            <version>${pagehelper.verison}</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>${commons.version}</version>
        </dependency>
        <dependency>
            <groupId>org.eclipse.persistence</groupId>
            <artifactId>javax.persistence</artifactId>
            <version>${javax.version}</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/cn.hutool/hutool-all -->
        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
            <version>${hutool.version}</version>
        </dependency>
    </dependencies>
</dependencyManagement>


<!--spring boot 插件-->
<build>
    <finalName>springcloud-hoxton</finalName>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <configuration>
                <fork>true</fork>
                <addResources>true</addResources>
            </configuration>
        </plugin>
        <plugin>
            <artifactId>maven-compiler-plugin</artifactId>
            <configuration>
                <source>1.8</source>
                <target>1.8</target>
            </configuration>
        </plugin>
    </plugins>
</build>

(3) 安装

3 场景模拟

模拟【订单微服务】调用 【支付微服务】

3.1 创建微服务provider-payment

(1) provider-payment

SQL建表脚本：

CREATE TABLE `t_payment` (
  `n_id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT '主键',
  `c_serial` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT '流水号',
  `c_name` varchar(255) DEFAULT NULL COMMENT '支付名',
  `n_money` decimal(10,2) DEFAULT NULL COMMENT '支付金额',
  PRIMARY KEY (`n_id`) USING BTREE
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8;

(2) pom

 <dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>
    <dependency>
        <groupId>org.mybatis.spring.boot</groupId>
        <artifactId>mybatis-spring-boot-starter</artifactId>
    </dependency>
    <dependency>
        <groupId>tk.mybatis</groupId>
        <artifactId>mapper-spring-boot-starter</artifactId>
    </dependency>
    <dependency>
        <groupId>com.github.pagehelper</groupId>
        <artifactId>pagehelper-spring-boot-starter</artifactId>
    </dependency>
    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>druid-spring-boot-starter</artifactId>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-jdbc</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <scope>runtime</scope>
        <optional>true</optional>
    </dependency>
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
    </dependency>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
    </dependency>
    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-lang3</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
    </dependency>
</dependencies>

(3) application.yml

server:
  port: 9000
spring:
  application:
    name: provider-payment-service
  datasource:
    url:  jdbc:mysql://localhost:3306/springcloud?useUnicode=true&characterEncoding=UTF-8&autoReconnect=true&useSSL=false&serverTimezone=UTC
    username: root
    password: 123456
    driver-class-name: com.mysql.jdbc.Driver
    type: com.alibaba.druid.pool.DruidDataSource

(4) consts

@AllArgsConstructor
@NoArgsConstructor
@Data
public class ResponseResultConsts {
    private Integer code;
    private String msg;
    private Object data;
    /**
     * 响应成功
     */
    public static ResponseResultConsts success(Object data,String msg){
        return new ResponseResultConsts(200, msg,data);
    }
    /**
     * 响应失败
     */
    public static ResponseResultConsts fail(Integer code,String msg){
        return new ResponseResultConsts(code, msg,null);
    }
}

(5) po

@Data
@AllArgsConstructor
@NoArgsConstructor
@Table(name = "t_payment")
public class PaymentPo {
    /**
     * id
     */
    @Id
    @Column(name = "n_id")
    @GeneratedValue(strategy=GenerationType.IDENTITY)
    private Integer id;
    /**
     * 流水号
     */
    @Column(name = "c_serial")
    private String serial;
    /**
     * 支付名
     */
    @Column(name = "c_name")
    private String name;
    /**
     * 金额
     */
    @Column(name = "n_money")
    private float money;
}

(6) Mapper

@Mapper
public interface PaymentMapper extends BaseMapper<PaymentPo> {
}

(7) Service

@Service
public class PaymentService {
    @Autowired
    private PaymentMapper paymentMapper;
    public PaymentPo selectById(String id){
        return paymentMapper.selectByPrimaryKey(id);
    }
    @Transactional
    public PaymentPo insert(PaymentPo payment){
        paymentMapper.insertSelective(payment);
        return payment;
    }
}

(8) Controller

@RestController
@RequestMapping("/payment")
public class PaymentController {
    @Autowired
    private PaymentService paymentService;
    /**
     * 根据ID查
     */
    @GetMapping("/{id}")
    public ResponseResultConsts selectPayment(@PathVariable("id") String id){
        PaymentPo paymentPo = paymentService.selectById(id);
        if (paymentPo==null){
            return ResponseResultConsts.fail(500,"查询失败");
        }
        return ResponseResultConsts.success(paymentPo,"查询成功");
    }
    /**
     * 根据流水号添加
     */
    @PostMapping("/payment")
    public ResponseResultConsts insertPayment(@RequestBody PaymentPo payment){
        PaymentPo paymentPo = paymentService.insert(payment);
        if (paymentPo==null){
            return ResponseResultConsts.fail(500,"插入失败");
        }
        return ResponseResultConsts.success(paymentPo,"添加成功");
    }
}

(9) 启动类

@SpringBootApplication
@MapperScan("com.payment.mapper")
public class PaymentApplication {
    public static void main(String[] args) {
        SpringApplication.run(PaymentApplication.class);
    }
}

(10) 测试

{
    "serial": "82181a8a-5d8b40ca96e2ebcca730837c",
    "name": "postman",
    "money": "18.81"
}

5 建立customer-order工程

5.1 pom

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <scope>runtime</scope>
        <optional>true</optional>
    </dependency>
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
    </dependency>
    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-lang3</artifactId>
    </dependency>
    <dependency>
        <groupId>org.eclipse.persistence</groupId>
        <artifactId>javax.persistence</artifactId>
    </dependency>
</dependencies>

5.2 application.yml

server:
  port: 8000

5.3 ResponseResultConsts

@AllArgsConstructor
@NoArgsConstructor
@Data
public class ResponseResultConsts {
    private Integer code;
    private String msg;
    private Object data;
    /**
     * 响应成功
     */
    public static ResponseResultConsts success(Object data,String msg){
        return new ResponseResultConsts(200, msg,data);
    }
    /**
     * 响应失败
     */
    public static ResponseResultConsts fail(Integer code,String msg){
        return new ResponseResultConsts(code, msg,null);
    }
}

5.4 po

@Data
@AllArgsConstructor
@NoArgsConstructor
@Table(name = "t_payment")
public class PaymentPo {
    /**
     * id
     */
    @Id
    @Column(name = "n_id")
    @GeneratedValue(strategy= GenerationType.IDENTITY)
    private Integer id;
    /**
     * 流水号
     */
    @Column(name = "c_serial")
    private String serial;
    /**
     * 支付名
     */
    @Column(name = "c_name")
    private String name;
    /**
     * 金额
     */
    @Column(name = "n_money")
    private float money;
}

5.5 RestTemplate

(1) 作用
RestTemplate提供了多种便捷访问远程Http服务的方法,是一种简单便捷的访问 restful服务模板类,是 Spring提供的用于访问Rest服务的客户端模板工具集
(2) 使用
使用 resttemplate访 restful接口非常的简单粗暴无脑。(ur, requestmap, ResponseBean. class)这三个参数分别代表REST请求地址、请求参数、HTP响应转换被转换成的时象类型。
(3) 建立配置文件

@Configuration
public class ApplicationConfig {
    @Bean
    public RestTemplate restTemplate(){
        return new RestTemplate();
    }
}

5.6 Controller

@RestController
@RequestMapping("/order")
public class OrderController {
    @Autowired
    private RestTemplate restTemplate;
    private static final String BASE_PAYMENT_URL="http://localhost:9000/";
    @GetMapping("/{id}")
    public ResponseResultConsts selectPayment(@PathVariable("id") String id){
        ResponseEntity<ResponseResultConsts> forEntity =
                restTemplate.getForEntity(BASE_PAYMENT_URL+id, ResponseResultConsts.class, id);
        return  forEntity.getBody();
    }
    @PostMapping("/payment")
    public ResponseResultConsts insertPayment(@RequestBody PaymentPo payment){
        ResponseEntity<ResponseResultConsts> response = restTemplate.postForEntity(BASE_PAYMENT_URL + "payment", payment, ResponseResultConsts.class);
        return response.getBody();
    }
}

5.7 测试

(1) 启动provider-payment服务和customer-order服务
(2) 测试

6 重构

6.1 创建common工程

6.2 pom

<dependencies>
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
    </dependency>
    <dependency>
        <groupId>cn.hutool</groupId>
        <artifactId>hutool-all</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <scope>runtime</scope>
        <optional>true</optional>
    </dependency>
    <dependency>
        <groupId>org.eclipse.persistence</groupId>
        <artifactId>javax.persistence</artifactId>
    </dependency>
</dependencies>

6.3 把po和consts提取出来

6.4 安装commons

6.5 修改provider-payment

(1) 添加坐标

<dependency>
    <groupId>com.zrs.springcloud</groupId>
    <artifactId>commons</artifactId>
    <version>1.0-SNAPSHOT</version>
</dependency>

(2) 删除相关包

(3) 修改controller、service、mapper文件

(4) 修改后启动程序

6.6 同理修改customer-order微服务

7 github地址

#分支base-environment-release-v1.0
https://github.com/zhurongsheng666/spring-cloud-hoxton