SpringCloud系列——构建多模块应用,远程调用服务day1-3
SpringCloud系列——构建多模块应用,远程调用服务
- 构建多模块应用
-
- 1.构建父模块
- 2. 清理父模块
- 3.父模块pom管理依赖
-
- 注意点
- 完整依赖
- 4.构建子模块（commons）
- 5.pom依赖导入
-
- 引用父模块
- 完整子pom
- 远程调用服务
-
- 1. 配置声明,注册RestTemplate到spring容器中
- 2.编写controller进行调用
-
- 声明服务地址
- 客户端调用
- 完整代码
- 项目重构示例
-
- 目录解释
- 1.编写common-api模块
-
- 目录
- pom依赖导入
- 将实体类，工具类抽取出来
-
- user实体类
- 统一结果处理ResultJSONUtil
- 使用maven清理项目
- 2.编写commons服务模块
-
- 目录
- pom
- yaml配置
- 直接编写业务逻辑
-
- UserMapper
- UserService
- UserServiceImpl
- UserController
- 3.构建客户端client
-
- 目录
- pom
- yaml
- ApplicationContextConfig
- ClientController
构建多模块应用
在上一篇文章中我们进行了quickstart的演示，这篇文章中我们进一步，将所有项目使用spring initializr进行构建
1.构建父模块
2. 清理父模块
只要留下.idea和pom.xml即可！
3.父模块pom管理依赖
注意点
需要加上
//设置打包为pom
<packaging>pom</packaging>
//用于管理下面的子模块
<modules>
<module>client</module>
<module>commons</module>
</modules>
//使用properties对版本进行统一管理
<properties>
<java.version>1.8</java.version>
<mysql.version>8.0.17</mysql.version>
<spring.boot.version>2.6.7</spring.boot.version>
<mybatis.plus.version>3.5.1</mybatis.plus.version>
<junit.version>5.8.2</junit.version>
<druid.version>1.2.9</druid.version>
<cloud.version>2021.0.1</cloud.version>
<cloud.alibaba.version>2021.0.1.0</cloud.alibaba.version>
<lombok.version>1.18.22</lombok.version>
</properties>
完整依赖
<?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>2.6.7</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>springcloud</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>springcloud</name>
<description>Demo project for Spring Boot</description>
<packaging>pom</packaging>
<modules>
<module>client</module>
<module>commons</module>
</modules>
<properties>
<java.version>1.8</java.version>
<mysql.version>8.0.17</mysql.version>
<spring.boot.version>2.6.7</spring.boot.version>
<mybatis.plus.version>3.5.1</mybatis.plus.version>
<!-- <mybatis.version>2.1.1</mybatis.version>-->
<junit.version>5.8.2</junit.version>
<druid.version>1.2.9</druid.version>
<cloud.version>2021.0.1</cloud.version>
<cloud.alibaba.version>2021.0.1.0</cloud.alibaba.version>
<lombok.version>1.18.22</lombok.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
<version>${spring.boot.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>${spring.boot.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.baomidou/mybatis-plus-boot-starter -->
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>${mybatis.plus.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.alibaba/druid-spring-boot-starter -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>${druid.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-alibaba-dependencies</artifactId>
<version>${cloud.alibaba.version}</version>
<type>pom</type>
<scope>import</scope>
</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.version}</version>-->
<!-- </dependency>-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<version>${spring.boot.version}</version>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<version>${spring.boot.version}</version>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${lombok.version}</version>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<version>${spring.boot.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>5.3.14</version>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-test</artifactId>
<version>${spring.boot.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
4.构建子模块（commons）
同父模块一样构建，但是这里只要删除mvn有关的文件即可，如.mvn,mvn.cmd,mvn,mvnw
5.pom依赖导入
引用父模块
<parent>
<groupId>com.example</groupId>
<artifactId>springcloud</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../pom.xml</relativePath>
</parent>
大家都说父模块写了版本子模块就不用写了，这确实，但是不知道时IDEA的版本问题，我的IDEA2021不会帮我直接下载依赖到库里
当然我发现了解决方法
我们还是以带有version标签去掉即可
如我们一开始（这里带有version标签）
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
<version>${spring.boot.version}</version>
</dependency>
等到依赖下载到库里之后
我们再把version标签去掉
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>
完整子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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.example</groupId>
<artifactId>springcloud</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../pom.xml</relativePath>
</parent>
<groupId>com.example</groupId>
<artifactId>commons</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>commons</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-validation</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<!-- <version>2.6.7</version>-->
</dependency>
<!-- https://mvnrepository.com/artifact/com.baomidou/mybatis-plus-boot-starter -->
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<!-- <version>3.5.1</version>-->
</dependency>
<!-- https://mvnrepository.com/artifact/com.alibaba/druid-spring-boot-starter -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<!-- <version>1.2.9</version>-->
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<!-- <version>2021.0.1</version>-->
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-alibaba-dependencies</artifactId>
<!-- <version>${cloud.alibaba.version}</version>-->
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<!-- <version>${druid.version}</version>-->
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<!-- <version>2.6.7</version>-->
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<!-- <version>${mysql.version}</version>-->
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<!-- <version>2.6.7</version>-->
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<!-- <version>${lombok.version}</version>-->
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<!-- <version>2.6.7</version>-->
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<!-- <version>5.3.14</version>-->
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<!-- <version>${junit.version}</version>-->
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-test</artifactId>
<!-- <version>2.6.7</version>-->
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
远程调用服务
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
使用restTemplate访问restful接口非常的简单
(url, requestMap, ResponseBean.class)
这三个参数分别代表REST请求地址、请求参数、HTTP响应转换被转换成的对象类型。
1. 配置声明,注册RestTemplate到spring容器中
package com.example.client.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;
@Configuration
public class ApplicationContextConfig {
@Bean
public RestTemplate getRestTemplate(){
return new RestTemplate();
}
}
2.编写controller进行调用
声明服务地址
客户端调用
完整代码
package com.example.client.contoller;
import com.example.commonapi.util.ResultJSONUtil;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
import javax.annotation.Resource;
@RestController
public class ClientController {
private static final String COMMONS_URL = "http://localhost:8888";
private static final String GETUSERINFO_URL = "/user/info";
@Resource
private RestTemplate restTemplate;
@GetMapping("/client/userinfo")
public ResultJSONUtil useCommonsGetUserInfo(){
return restTemplate.getForObject(COMMONS_URL+GETUSERINFO_URL,ResultJSONUtil.class);
}
}
项目重构示例
接下来我们对项目进行重构，指明服务端，客户端，将模块的服务区分开来
目录解释
我们看到有一个父模块（springcloud）管理下面的子模块，声明pom中依赖的版本
其中client表示客户端（进行调用其他服务）
commons表示常见服务（提供服务接口供client进行调用）
common-api表示项目的常用类，我们把如常用实体类，工具类放置在其中供全局使用，所以我们要把common-api进行打包形成自己的依赖
1.编写common-api模块
目录
pom依赖导入
<?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>com.example</groupId>
<artifactId>springcloud</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../pom.xml</relativePath>
</parent>
<groupId>com.example</groupId>
<artifactId>common-api</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>common-api</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</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
将实体类，工具类抽取出来
user实体类
package com.example.commonapi.entity;
import com.baomidou.mybatisplus.annotation.TableField;
import com.baomidou.mybatisplus.annotation.TableName;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@AllArgsConstructor
@NoArgsConstructor
@TableName("user")
public class User {
private Long id;
private String username;
@TableField(value = "nickname")
private String nickName;
}
统一结果处理ResultJSONUtil
package com.example.commonapi.util;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@AllArgsConstructor
@NoArgsConstructor
public class ResultJSONUtil {
private Integer code;
private String message;
private Object data;
public ResultJSONUtil(Integer code, String msg) {
this(code, msg, null);
}
public static ResultJSONUtil success(Integer code,String msg,Object data){
ResultJSONUtil resultJSONUtil = new ResultJSONUtil();
resultJSONUtil.setCode(code);
resultJSONUtil.setMessage(msg);
resultJSONUtil.setData(data);
return resultJSONUtil;
}
public static ResultJSONUtil success(String msg,Object data){
return ResultJSONUtil.success(200,msg,data);
}
public static ResultJSONUtil fail(Integer code,String msg,Object data){
ResultJSONUtil resultJSONUtil = new ResultJSONUtil();
resultJSONUtil.setCode(code);
resultJSONUtil.setMessage(msg);
resultJSONUtil.setData(data);
return resultJSONUtil;
}
public static ResultJSONUtil fail(Integer code,String msg){
return ResultJSONUtil.success(code,msg,null);
}
}
使用maven清理项目
先切换为跳过测试模式
然后在生命周期中进行clean
完成后进行install
这样我们就得到了自己的一个依赖
2.编写commons服务模块
目录
pom
其中要引入自己的common-api的依赖
<?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>com.example</groupId>
<artifactId>springcloud</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../pom.xml</relativePath>
</parent>
<groupId>com.example</groupId>
<artifactId>commons</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>commons</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>com.example</groupId>
<artifactId>common-api</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/com.baomidou/mybatis-plus-boot-starter -->
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<!-- <version>3.5.1</version>-->
</dependency>
<!-- https://mvnrepository.com/artifact/com.alibaba/druid-spring-boot-starter -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<!-- <version>1.2.9</version>-->
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>2021.0.1</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-alibaba-dependencies</artifactId>
<version>${cloud.alibaba.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<!-- <version>${druid.version}</version>-->
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<!-- <version>2.6.7</version>-->
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<!-- <version>${mysql.version}</version>-->
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<!-- <version>2.6.7</version>-->
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<!-- <version>${lombok.version}</version>-->
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<!-- <version>2.6.7</version>-->
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<!-- <version>5.3.14</version>-->
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<!-- <version>${junit.version}</version>-->
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-test</artifactId>
<!-- <version>2.6.7</version>-->
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.example</groupId>
<artifactId>common-api</artifactId>
<version>0.0.1-SNAPSHOT</version>
<scope>compile</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
yaml配置
配置端口号，名字，数据库连接即可
server:
port: 8888
spring:
application:
name: commons
datasource:
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql://localhost:3306/routerboot?useUnicode=true&characterEncoding=UTF-8&useSSL=false&serverTimezone=Asia/Shanghai&zeroDateTimeBehavior=CONVERT_TO_NULL&allowPublicKeyRetrieval=true
username: root
password: syf20020816
直接编写业务逻辑
UserMapper
package com.example.commons.mapper;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.example.commonapi.entity.User;
import org.apache.ibatis.annotations.Mapper;
@Mapper
public interface UserMapper extends BaseMapper<User> {
}
UserService
package com.example.commons.service;
import com.baomidou.mybatisplus.extension.service.IService;
import com.example.commonapi.entity.User;
import com.example.commonapi.util.ResultJSONUtil;
public interface UserService extends IService<User> {
ResultJSONUtil getUserInfo();
}
UserServiceImpl
package com.example.commons.service.impl;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.example.commonapi.entity.User;
import com.example.commonapi.util.ResultJSONUtil;
import com.example.commons.mapper.UserMapper;
import com.example.commons.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class UserServiceImpl extends ServiceImpl<UserMapper, User>implements UserService {
@Autowired
private UserMapper userMapper;
@Override
public ResultJSONUtil getUserInfo() {
User user = userMapper.selectById(1508100589987471362L);
if(user!=null){
return ResultJSONUtil.success("success",user);
}else {
return ResultJSONUtil.fail(501,"fail");
}
}
}
UserController
package com.example.commons.controller;
import com.example.commonapi.util.ResultJSONUtil;
import com.example.commons.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RequestMapping("/user")
public class UserController {
@Autowired
private UserService userService;
@GetMapping("/info")
public ResultJSONUtil getUserInfo(){
return userService.getUserInfo();
}
}
3.构建客户端client
目录
明确client只是充当客户端的角色去调用其他模块的服务，所以无需有service,mapper,entity,util等那些东西
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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.example</groupId>
<artifactId>springcloud</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>client</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>client</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>com.example</groupId>
<artifactId>common-api</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
<version>2.6.7</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<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>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
yaml
这里解释一下为什么要有数据库的配置，这也是我没有处理好的地方，因为我在common-api中用到了mybatis-plus的注解，所以必须要有数据库配置才能没有异常
server:
port: 9000
spring:
application:
name: client
datasource:
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql://localhost:3306/routerboot?useUnicode=true&characterEncoding=UTF-8&useSSL=false&serverTimezone=Asia/Shanghai&zeroDateTimeBehavior=CONVERT_TO_NULL&allowPublicKeyRetrieval=true
username: root
password: syf20020816
ApplicationContextConfig
用来注册RestTemplate
package com.example.client.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;
@Configuration
public class ApplicationContextConfig {
@Bean
public RestTemplate getRestTemplate(){
return new RestTemplate();
}
}
ClientController
package com.example.client.contoller;
import com.example.commonapi.util.ResultJSONUtil;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
import javax.annotation.Resource;
@RestController
public class ClientController {
private static final String COMMONS_URL = "http://localhost:8888";
private static final String GETUSERINFO_URL = "/user/info";
@Resource
private RestTemplate restTemplate;
@GetMapping("/client/userinfo")
public ResultJSONUtil useCommonsGetUserInfo(){
return restTemplate.getForObject(COMMONS_URL+GETUSERINFO_URL,ResultJSONUtil.class);
}
}