父工程
pom
父工程没啥,只有一个pom要配置
<?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>com.meng</groupId>
<artifactId>cloud2020</artifactId>
<version>1.0-SNAPSHOT</version>
<!--<modules>
<module>cloud-provider-payment8001</module>
<module>cloud-consumer-order80</module>
<module>cloud-api-commons</module>
<module>cloud-eureka-server7001</module>
</modules>-->
<packaging>pom</packaging>
<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>
<log4j.version>1.2.17</log4j.version>
<lombok.version>1.16.18</lombok.version>
<mysql.version>8.0.21</mysql.version>
<druid.version>1.1.23</druid.version>
<mybatis.spring.boot.version>2.1.3</mybatis.spring.boot.version>
</properties>
<dependencyManagement>
<dependencies>
<!--spring boot 2.2.2-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>2.2.2.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<!--spring cloud Hoxton.SR1-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Hoxton.SR1</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>2.1.0.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>${druid.version}</version>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>${mybatis.spring.boot.version}</version>
</dependency>
<!--junit-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
</dependency>
<!--log4j-->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<fork>true</fork>
<addResources>true</addResources>
</configuration>
</plugin>
</plugins>
</build>
</project>
在父工程配好了版本,子工程可以不指定版本,默认调用父工程的版本。
创建一个公共接口
创建子Module,cloud-api-commons包含需要的通用实体类
pom配置
首先配置pom
<?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">
<parent>
<artifactId>cloud2020</artifactId>
<groupId>com.meng</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>cloud-api-commons</artifactId>
<dependencies>
<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>
<optional>true</optional>
</dependency>
<!--hutool工具包-->
<dependency>
<groupId>cn.hutool</groupId>
<artifactId>hutool-all</artifactId>
<version>5.1.0</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.5</version>
<scope>compile</scope>
</dependency>
</dependencies>
</project>
公共实体类
然后是两个实体类
Payment.java
package com.meng.entity;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.apache.ibatis.type.Alias;
import java.io.Serializable;
/**
* @author Administrator
*/
@Data
@AllArgsConstructor
@NoArgsConstructor
@Alias("Payment")
public class Payment implements Serializable {
private Long id;
private String serial;
}
CommonResult.java
package com.meng.entity;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
/**
* @author Administrator
*/
@Data
@AllArgsConstructor
@NoArgsConstructor
public class CommonResult<T> {
private Integer code;
private String message;
private T data;
public CommonResult(Integer code,String message){
this(code,message,null);
}
}
8001端口
pom配置
<?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">
<parent>
<artifactId>cloud2020</artifactId>
<groupId>com.meng</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>cloud-provider-payment8001</artifactId>
<dependencies>
<dependency>
<groupId>com.meng</groupId>
<artifactId>cloud-api-commons</artifactId>
<version>${project.version}</version>
</dependency>
<!--web-->
<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>
<!--mybatis-->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
</dependency>
<!--druid-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>1.1.10</version>
</dependency>
<!--mysql-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<!--devtool-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<!--lombok-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!--eureka client-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
</dependencies>
</project>
yml
application.yml
server:
port: 8001
spring:
application:
name: cloud-payment-service
datasource:
type: com.alibaba.druid.pool.DruidDataSource
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql://localhost:8080/spring-cloud-1?useUnicode=true&useSSL=false&characterEncoding=utf-8
username: root
password: 123456
mybatis:
type-aliases-package: com.meng.entity
mapper-locations: classpath:mapper/*.xml
eureka:
client:
#表示将自己注册进Eureka Server,默认为true
register-with-eureka: true
#是否从Eureka Server抓取已有的注册信息,默认为true
fetchRegistry: true
service-url:
defaultZone: http://localhost:7001/eureka
主启动类
PaymentMain8001.java
package com.meng;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
/**
* @author Administrator
*/
@SpringBootApplication
@EnableEurekaClient
public class PaymentMain8001 {
public static void main(String[] args) {
SpringApplication.run(PaymentMain8001.class,args);
}
}
mapper接口
PaymentMapper.java
package com.meng.mapper;
import com.meng.entity.Payment;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
/**
* @author Administrator
*/
@Mapper
public interface PaymentMapper {
/**
* 新增
* @param payment
* @return
*/
int create(Payment payment);
/**
* 按id查询
* @param id
* @return
*/
Payment getPaymentById(@Param("id")Long id);
mapper通过xml实现
PaymentMapper.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.meng.mapper.PaymentMapper">
<insert id="create" parameterType="Payment" useGeneratedKeys="true" keyProperty="id">
insert into payment(serial)
values (#{serial})
</insert>
<resultMap id="BaseResultMap" type="Payment">
<result property="id" column="id" jdbcType="BIGINT"></result>
<result property="serial" column="serial" jdbcType="VARCHAR"></result>
</resultMap>
<select id="getPaymentById" parameterType="Long" resultMap="BaseResultMap">
select *
from payment
where id=#{id}
</select>
</mapper>
service层
PaymentService.java接口
package com.meng.service;
import com.meng.entity.Payment;
import org.apache.ibatis.annotations.Param;
/**
* @author Administrator
*/
public interface PaymentService {
/**
* 新增
* @param payment
* @return
*/
int create(Payment payment);
/**
* 按id查询
* @param id
* @return
*/
Payment getPaymentById(@Param("id")Long id);
}
service接口的实现PaymentServiceImpl.java
package com.meng.service.impl;
import com.meng.entity.Payment;
import com.meng.mapper.PaymentMapper;
import com.meng.service.PaymentService;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
/**
* @author Administrator
*/
@Service
public class PaymentServiceImpl implements PaymentService {
@Resource
private PaymentMapper paymentMapper;
@Override
public int create(Payment payment) {
return paymentMapper.create(payment);
}
@Override
public Payment getPaymentById(Long id) {
return paymentMapper.getPaymentById(id);
}
}
controller层
PaymentController.java
package com.meng.controller;
import com.meng.entity.CommonResult;
import com.meng.entity.Payment;
import com.meng.service.PaymentService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.*;
import javax.annotation.Resource;
/**
* @author Administrator
*/
@RestController
@Slf4j
public class PaymentController {
@Resource
private PaymentService paymentService;
@PostMapping("/payment/create")
public CommonResult create(@RequestBody Payment payment){
int result=paymentService.create(payment);
log.info("*****插入结果:"+result);
if (result>0){
return new CommonResult(200,"插入数据库成功",result);
}else {
return new CommonResult(444,"插入数据库失败");
}
}
@GetMapping("/payment/getPaymentById/{id}")
public CommonResult getPaymentById(@PathVariable("id") Long id){
Payment payment=paymentService.getPaymentById(id);
log.info("*****查询结果:"+payment);
if (payment!=null){
return new CommonResult(200,"查询成功",payment);
}else {
return new CommonResult(444,"没有对应记录,查询ID:"+id+"失败");
}
}
}
客户端80端口
pom
<?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">
<parent>
<artifactId>cloud2020</artifactId>
<groupId>com.meng</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>cloud-consumer-order80</artifactId>
<dependencies>
<dependency>
<groupId>com.meng</groupId>
<artifactId>cloud-api-commons</artifactId>
<version>${project.version}</version>
</dependency>
<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>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!--eureka client-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
</dependencies>
</project>
yml
application.yml
server:
port: 80
spring:
application:
name: cloud-order-service
eureka:
client:
#表示将自己注册进Eureka Server,默认为true
register-with-eureka: true
#是否从Eureka Server抓取已有的注册信息,默认为true
fetchRegistry: true
service-url:
defaultZone: http://localhost:7001/eureka
主启动类
OrderMain80.java
package com.meng;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
/**
* @author Administrator
*/
@SpringBootApplication
@EnableEurekaServer
public class OrderMain80 {
public static void main(String[] args) {
SpringApplication.run(OrderMain80.class,args);
}
}
restTemplate配置类
ApplicationContextConfig.java
package com.meng.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;
/**
* @author Administrator
*/
@Configuration
public class ApplicationContextConfig {
@Bean
public RestTemplate getRestTemplate(){
return new RestTemplate();
}
}
controller层
都配置好了之后客户端的访问只需要controller就行了,不需要service层以及数据库的访问
OrderController.java
package com.meng.controller;
import com.meng.entity.CommonResult;
import com.meng.entity.Payment;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
import javax.annotation.Resource;
/**
* @author Administrator
*/
@RestController
@Slf4j
public class OrderController {
public static final String PAYMENT_URL="http://localhost:8001";
@Resource
private RestTemplate restTemplate;
@GetMapping("/consumer/payment/create")
public CommonResult<Payment> create(Payment payment){
return restTemplate.postForObject(PAYMENT_URL+"/payment/create",payment,CommonResult.class);
}
@GetMapping("/consumer/payment/getPaymentById/{id}")
public CommonResult<Payment> getPaymentById(@PathVariable("id") Long id){
return restTemplate.getForObject (PAYMENT_URL + "/payment/getPaymentById/" + id, CommonResult.class);
}
}
eureka服务7001端口
pom
<?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">
<parent>
<artifactId>cloud2020</artifactId>
<groupId>com.meng</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>cloud-eureka-server7001</artifactId>
<dependencies>
<!--引入自定义的api,包括实体类-->
<dependency>
<groupId>com.meng</groupId>
<artifactId>cloud-api-commons</artifactId>
<version>${project.version}</version>
</dependency>
<!--eureka server-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</dependency>
<!--web-->
<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>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
</project>
yml
application.yml
server:
port: 7001
eureka:
instance:
hostname: localhost
client:
#表示不像注册中心注册自己
register-with-eureka: false
fetch-registry: false
#设置与Eureka Server交互的地址,查询服务和注册服务都需要依赖这个地址
service-url:
defaultZone: http://${
eureka.instance.hostname}:${
server.port}/eureka/
主启动类
EurekaMain7001.java
package com.meng;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
/**
* @author Administrator
*/
@SpringBootApplication
@EnableEurekaServer
public class EurekaMain7001 {
public static void main(String[] args) {
SpringApplication.run(EurekaMain7001.class,args);
}
}
配置好之后启动主启动类就可以在端口访问http://localhost:7001