1. 前期准备
1.1 Cloud升级

1.2 版本选择
| 组件 | 版本 |
|---|---|
| SpringCloud | Hoxton.SR1 |
| SpringBoot | 2.2.2.RELEASE |
| Cloud Alibaba | 2.1.0.RELEASE |
| Jave | Java8 |
| Maven | 3.5.2 |
| MySQL | 5.5 |
1.3 微服务聚合父工程
1.3.1 新建Maven Projcet





1.3.2 父pom文件
<?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.springcloud</groupId>
<artifactId>cloud2020</artifactId>
<version>1.0-SNAPSHOT</version>
<!-- 打包为pom,给子模块引用传递依赖 -->
<packaging>pom</packaging>
<!-- 统一管理jar包版本 -->
<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>5.1.47</mysql.version>
<druid.version>1.1.16</druid.version>
<mybatis.spring.boot.version>1.3.0</mybatis.spring.boot.version>
</properties>
<!-- 子模块继承之后,提供作用:锁定版本+子modlue不用写groupId和version -->
<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>${mybatis.spring.boot.version}</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${lombok.version}</version>
<optional>true</optional>
</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>
1.3.3 设置编辑器的字符编码
File->Setting和File->Other Settings->Settings for New Projects都需要设置

1.3.4 注解生效激活
File->Setting和File->Other Settings->Settings for New Projects都需要设置

1.3.5 设置Java编译版本

1.3.6 设置忽略文件

2. 微服务提供者支付模块cloud-provider-payment8001
2.1 新建cloud-provider-payment8001模块




2.2 项目结构

2.3 修改pom文件
<?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.springcloud</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>cloud-provider-payment8001</artifactId>
<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>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>1.1.10</version>
</dependency>
<!--mysql-connector-java-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<!--jdbc-->
<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>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
</project>
2.4 配置yml文件
server:
port: 8001 #端口号
spring:
application:
name: cloud-payment-service
datasource:
type: com.alibaba.druid.pool.DruidDataSource # 当前数据源操作类型
driver-class-name: com.mysql.jdbc.Driver # mysql驱动包
url: jdbc:mysql://localhost:3306/cloud2020?useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC&useSSL=false
username: root
password: root
# 如果使用注解方式,下面mybatis配置可省略
mybatis:
mapperLocations: classpath:mapper/*.xml # 映射的xml文件路径
type-aliases-package: com.springcloud.entities # 所有Entity别名类所在包
2.5 项目启动类
package com.springcloud;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
@MapperScan("com.springcloud.dao") //扫描com.springcloud.dao所有Dao接口
public class PaymentMain8001 {
public static void main(String[] args) {
SpringApplication.run(PaymentMain8001.class,args);
}
}
2.6 通用响应结果类
package com.springcloud.entities;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@NoArgsConstructor
@AllArgsConstructor
public class CommonResult<T> {
private Integer code;
private String message;
private T data;
// 无data数据构造函数
public CommonResult(Integer code, String message) {
this.code = code;
this.message = message;
}
}
2.7 实体类Payment
建表语句
CREATE TABLE `payment` (
`id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT 'ID',
`serial` varchar(200) DEFAULT '',
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
INSERT INTO `payment`(`id`, `serial`) VALUES (1, 'aaaa');
INSERT INTO `payment`(`id`, `serial`) VALUES (2, 'bbbb');
INSERT INTO `payment`(`id`, `serial`) VALUES (3, 'cccc');
package com.springcloud.entities;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@NoArgsConstructor
@AllArgsConstructor
public class Payment {
private Long id;
private String serial;
}
2.8 Dao类
package com.springcloud.dao;
import com.springcloud.entities.Payment;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;
public interface PaymentDao {
@Insert("insert into payment values(null,#{serial}) ")
int create(Payment payment);
@Select("select * from payment where id=#{id}")
Payment getById(Long id);
}
2.9 Service接口
package com.springcloud.service;
import com.springcloud.entities.Payment;
import org.springframework.stereotype.Service;
public interface PaymentService {
int create(Payment payment);
Payment getById(Long id);
}
2.10 Service实现类
package com.springcloud.service.impl;
import com.springcloud.dao.PaymentDao;
import com.springcloud.entities.Payment;
import com.springcloud.service.PaymentService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class PaymentServiceImpl implements PaymentService {
@Autowired
private PaymentDao paymentDao;
@Override
public int create(Payment payment) {
return paymentDao.create(payment);
}
@Override
public Payment getById(Long id) {
return paymentDao.getById(id);
}
}
2.11 控制器类
package com.springcloud.controller;
import com.springcloud.entities.CommonResult;
import com.springcloud.entities.Payment;
import com.springcloud.service.PaymentService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
@RestController
@RequestMapping("/payment")
@Slf4j
public class PaymentController {
@Autowired
private PaymentService paymentService;
@PostMapping("/create")
// 这里需要加@RequestBody,因为该方法会被其他微服务调用,传递数据用的就是请求体,普通方式无法获取数据
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("/getById/{id}")
public CommonResult getById(@PathVariable("id") Long id){
Payment payment = paymentService.getById(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,"查询失败,id:"+id);
}
}
}
2.12 测试


3. 微服务消费者订单模块cloud-consumer-order80
3.1 项目结构

3.2 pom文件
<?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.springcloud</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>cloud-consumer-order80</artifactId>
<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>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
</project>
3.3 yml文件
server:
port: 808 #因为IIS占用了80端口,所以使用808代替80
3.4 依赖注入配置类
package com.springcloud.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;
@Configuration
public class AppcationContextConfig {
// 注入RestTemplate 实例
@Bean
public RestTemplate getRestTemplate(){
return new RestTemplate();
}
}
3.5 控制器类
package com.springcloud.controller;
import com.springcloud.entities.CommonResult;
import com.springcloud.entities.Payment;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.client.RestTemplate;
@RestController
@Slf4j
public class OrderController {
@Autowired
private RestTemplate restTemplate;
private final String PAYMENT_URL="http://localhost:8001";
@PostMapping("/consumer/payment/create")
public CommonResult create(Payment payment){
//这里是把payment放进请求体再传过去,所以payment微服务那边必须用@RequestBody接收,否则数据会空列
return restTemplate.postForObject(PAYMENT_URL+"/payment/create",payment,CommonResult.class);
}
@GetMapping("/consumer/payment/getById/{id}")
public CommonResult getById(@PathVariable("id") Long id){
return restTemplate.getForObject(PAYMENT_URL+"payment/getById/"+id,CommonResult.class);
}
}
3.6 测试


4. 通用API模块cloud-api-commons
4.1 项目结构

4.2 pom文件
<?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.springcloud</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>
<dependency>
<groupId>cn.hutool</groupId>
<artifactId>hutool-all</artifactId>
<version>5.1.0</version>
</dependency>
</dependencies>
</project>
4.3 实体类
- 把支付模块的实体类复制到通用API模块
- 删除支付模块和订单模块的实体类
4.4 修改其他模块的pom文件
- 订单模块和支付模块添加以下依赖
<!-- 引入自己定义的api通用包 -->
<dependency>
<groupId>com.springcloud</groupId>
<artifactId>cloud-api-commons</artifactId>
<version>${project.version}</version>
</dependency>
本文详细介绍了如何使用SpringCloud Hoxton.SR1、SpringBoot 2.2.2.RELEASE等技术构建微服务,涉及支付模块的创建、项目结构、依赖管理和API接口实现,以及消费者模块的配置和通用API模块的整合。
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