Springboot整合dubbo搭建微服务的实现示例
目录
- 开发前提
- 构建Springboot项目
- 开发api模块
- 开发生产者模块
- 第一步:导入依赖
- 第二步:添加配置
- 第三步:编写启动类
- 第四步:添加mapper接口
- 第五步:实现接口:
- 第六步:编写controller层接口
- 开发消费者模块
- 第一步:导入依赖
- 第二步:添加配置
- 第三步:编写启动类:
- 第四步:编写调用生产者接口
- 测试
开发前提
由于dubbo的注册中心用的是zookeeper,所以首先需要安装zookeeper。
构建Springboot项目
第一步:选择新建project或者module,在界面中选择maven点击next:
第二步:填上项目的基本信息点击Finish:
第三步:右击项目new -> Module:
第四步:在界面中选择maven点击next:
第五步:填上项目的基本信息点击Finish:
第六步:重复第三,四,五步,分别创建项目需要的dubbo-api,dubbo-provider,dubbo-customer几个模块,如下:
第七步:导入父工程依赖:
<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.demo</groupId> <artifactId>dubbo-demo</artifactId> <packaging>pom</packaging> <version>1.0-SNAPSHOT</version> <modules> <module>dubbo-provider</module> <module>dubbo-customer</module> <module>dubbo-api</module> </modules> <properties> <Java.version>1.8</java.version> <source.level>1.8</source.level> <target.level>1.8</target.level> <lombok.version>1.18.16</lombok.version> <skip_maven_deploy>true</skip_maven_deploy> <spring-boot-dependencies.version>2.4.1</spring-boot-dependencies.version> <spring-cloud-dependencies.version>Dalston.SR4</spring-cloud-dependencies.version> <junit.version>4.12</junit.version> <dubbo.version>3.0.2.1</dubbo.version> python <spring-dubbo.version>2.0.0</spring-dubbo.version> <lombok.version>1.18.16</lombok.version> </properties> <dependencyManagement> <dependencies> <!-- 统一jar版本管理,避免使用 spring-boot-parent --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-dependencies</artifactId> <version>${spring-boot-dependencies.version}</version> <type>pom</type> <scope>import</scope> </dependency> <dependency> <groupId>org.apache.dubbo</groupId> <artifactId>dubbo-bom</artifactId> <version>${dubbo.version}</version> <type>pom</type> <scope>import</scope> </dependency> <!--dubbo 和 springboot 整合的包--> <dependency> <groupId>org.apache.dubbo</groupId> <artifactId>dubbo-spring-boot-starter</artifactId> <version>${dubbo.version}</version> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>${lombok.version}</version> <scope>compile</scope> </dependency> </dependencies> </dependencyManagement> </project>
开发api模块
user实体类:
package com.demo.api.entity; import lombok.Data; import java.io.Serializable; /** * @Author: laz * @CreateTime: 2022-10-26 10:56 * @Version: 1.0 */ @Data public class User implements Serializable { private Long id; private String username; private String password; }
创建本次测试的接口:
package com.demo.api.service; import com.demo.api.entity.User; public interface IUserService { User selectUserById(Long id); }
开发生产者模块
第一步:导入依赖
<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <parent> <artifactId>dubbo-demo</artifactId> <groupId>com.demo</groupId> <version>1.0-SNAPSHOT</version> </parent> <modelVersion>4.0.0</modelVersion> <artifactId>dubbo-provider</artifactId> <dependencies> <dependency> <groupId>com.demo</groupId> <artifactId>dubbo-api</artifactId> <version>1.0-SNAPSHOT</version> </dependency> <!--dubbo 与 spring-boot 整合包--> <dependency> <groupId>org.apache.dubbo</groupId> <artifactId>dubbo-spring-boot-starter</artifactId> </dependency> <!--springboot 启动核心包--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> <!--springboot rest --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.apache.dubbo</groupId> <artifactId>dubbo-registry-zookeeper</artifactId> </dependency> <dependency> <groupId>org.myBATis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter<http://www.devze.com;/artifactId> <version>1.3.0</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.3.1</version> </dependency> <!--mysql 的驱动--> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency> </dependencies> <build> <resources> <resource> <directory>src/main/java</directory> <includes> <include>**/*.properties</include> <include>**/*.xml</include> </includes> <filtering>false</filtering> </resource> <resource> <directory>src/main/resources</directory> <includes> <include>**/*.yml</include> <include>**/*.xml</include> </includes> <filtering>false</filtering> </resource> </resources> </build> </project>
第二步:添加配置
server: port: 8081 spring: application: name: dubbo-samples-privider-springCloud #配置数据源信息 datasource: #配置连接数据库的各个信息 driver-class-name: com.mysql.cj.jdbc.Driver #设置字符集 url: jdbc:mysql://8.142.127.37:3306/test?useSSL=false&useUnicode=true&characterEncoding=utf-8&zeroDateTimeBehavior=convertToNull&transformedBitIsBoolean=true&serverTimezone=GMT%2B8&nullCatalogMeansCurrent=true&allowpublicKeyRetrieval=true username: root password: 123456 mybatis-plus: #配置类型别名所对应的包 type-aliases-package: com.demo.provider.entity #配置SQL输出语句com.winsun.dataclean.mapper mapper-locations: com/demo/provider/mapper/*.xml dubbo: application: name: ${spring.application.name} registry: address: zookeeper://43.139.86.193:2181 timeout: 2000 protocol: name: dubbo port: 20890 # 扫描 @DubboService 注解 scan: base-packages: com.demo.provider.service.impl
第三步:编写启动类
package com.demo.provider; import org.apache.dubbo.config.spring.context.annotation.EnableDubbo; import org.mybatis.spring.annotation.MapperScan; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; /** * @Author: laz * @CreateTime: 2022-10-26 11:05 * @Version: 1.0 */ @EnableDubbo @SpringBootApplication @MapperScan("com.demo.provider.mapper") public class ProviderApp { public static void main(String[] args) { SpringApplication.run(ProviderApp.class,args); System.out.println("生产者启动完毕"); } }
第四步:添加mapper接口
package com.demo.provider.mapper; import com.demo.api.entity.User; /** * @Author: laz * @CreateTime: 2022-10-26 11:01 * @Version: 1.0 */ public interface UserMapper { User selectUserById(Long id); }
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.demo.provider.mapper.UserMapper"> <select id="selectUserById" resultType="com.demo.api.entity.User"> select * from user where id = #{id} </select> </mapper>
第五步:实现接口:
package com.demo.provider.service.impl; import com.demo.api.entity.User; import com.demo.api.service.IUserService; import com.demo.provider.mapper.UserMapper; import lombok.AllArgsConstructor; import org.apache.dubbo.config.annotation.DubboService; /** * @Author: laz * @CreateTime: 2022-10-26 11:00 * @Version: 1.0 */ @DubboService @AllArgsConstructor public class UserServiceImpl implements IUserService { private final UserMapper userMapper; public User selectUserById(Long id) { User user = userMapper.selectUserById(id); return user; } }
第六步:编写controller层接口
package com.demo.provider.controller; import com.demo.api.entity.User; import com.demo.api.service.IUserService; import lombok.AllArgsConstructor; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; /** * @Author: laz * @CreateTime: 2022-10-26 11:53 * @Version: 1.0 */ @RestController @RequestMapping("/provider") @AllArgsConstructor public class UserController { private final IUserService userService; @RequestMapping("/selectUserById/{id}") public User selectUserById(@PathVariable("id")Long id){ return userService.selectUserById(id); } }
开发消费者模块
第一步:导入依赖
<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <parent> <artifactId>dpythonubbo-demo</artifactId> <groupId>com.demo</groupId> <version>1.0-SNAPSHOT</version> </parent> <modelVersion>4.0.0</modelVersion> <artifactId>dubbo-customer</artifactId> <dependencies> <!--dubbo-samples-springcloud-api 项目 依赖--> <dependency> <groupId>com.demo</groupId> <artifactId>dubbo-api</artifactId> <version>1.0-SNAPSHOT</version> </dependency> <dependency> <groupId>org.apache.dubbo</groupId> <artifactId>dubbo-spring-boot-starter</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.apache.dubbo</groupId> <artifactId>dubbo-registry-zookeeper</artifactId> </dependency> </dependencies> </project>
第二步:添加配置
server: port: 8082 spring: application: name: dubbo-samples-consumer-springCloud dubbo: registry: address: zookeeper://43.139.86.193:2181 timeout: 2000 protocol: name: dubbo
第三步:编写启动类:
package com.demo.customer; import org.apache.dubbo.config.spring.context.annotation.EnableDubbo; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication @EnableDubbo public class ConsumerApplication { public static void main(String[] args) { SpringApplication.run(ConsumerApplication.class, args); System.out.println("消费者启动完android毕!"); } }
第四步:编写调用生产者接口
package com.demo.customer.controller; import com.demo.api.entity.User; import com.demo.api.service.IUserService; import lombok.extern.slf4j.Slf4j; import org.apache.dubbo.config.annotation.DubboReference; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @RestController @RequestMapping("/consumer") @Slf4j public class ConsumerUserController { @DubboReference( protocol = "dubbo", loadbalance = "random") prsifmANcUqbivate IUserService userService; @RequestMapping("/selectUserById/{id}") public User getUser(@PathVariable("id") Long id) { User user = userService.selectUserById(id); log.info("response from provider: {}", user); return user; } }
整个项目结构如下:
测试
分别启动生产者和消费者,在浏览器分别调用以下接口:
http://localhost:8081/provider/selectUserById/1
http://localhost:8082/consumer/selectUserById/1结果:
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