【Dubbo】快速入门案例以及配置详情

<dependencies><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId></dependency><!--mybatis--><dependency><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter</artifactId></dependency>​<!--dubbo的起步依赖--><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-spring-boot-starter</artifactId><version>2.7.8</version></dependency>​<dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-registry-nacos</artifactId><version>2.7.8</version></dependency></dependencies>（2）编写引导类packagecn.itcast.user;
​importorg.mybatis.spring.annotation.MapperScan;
importorg.springframework.boot.SpringApplication;
importorg.springframework.boot.autoconfigure.SpringBootApplication;
​@MapperScan("cn.itcast.user.mapper")
@SpringBootApplicationpublicclassUserProviderApplication {
​publicstaticvoidmain(String[] args) {
SpringApplication.run(UserProviderApplication.class, args);
    }
​}

packagecn.itcast.user.service;
​​importcn.itcast.user.api.UserService;
importcn.itcast.user.domain.User;
importcn.itcast.user.mapper.UserMapper;
importorg.apache.dubbo.config.annotation.DubboService;
importorg.springframework.beans.factory.annotation.Autowired;
​@DubboServicepublicclassUserServiceImplimplementsUserService {
​@AutowiredprivateUserMapperuserMapper;
​//根据id查询用户名称publicStringqueryUsername(Longid) {
returnuserMapper.findById(id).getUsername();
    }
}

server:
port: 18081spring:
datasource:
url: jdbc:mysql://localhost:3306/dubbo-demo?useSSL=falseusername: rootpassword: rootdriver-class-name: com.mysql.jdbc.Driverapplication:
name: user-providerlogging:
level:
cn.itcast: debugpattern:
dateformat: HH:mm:ss:SSSdubbo:
protocol:
name: dubboport: 20881registry:
address: nacos://127.0.0.1:8848scan:
base-packages: cn.itcast.user.service

<dependencies><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency>​​<!--dubbo的起步依赖--><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-spring-boot-starter</artifactId><version>2.7.8</version></dependency>​<dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-registry-nacos</artifactId><version>2.7.8</version></dependency></dependencies>

packagecn.itcast.user;
​importorg.springframework.boot.SpringApplication;
importorg.springframework.boot.autoconfigure.SpringBootApplication;
​​@SpringBootApplicationpublicclassUserConsumerApplication {
​publicstaticvoidmain(String[] args) {
SpringApplication.run(UserConsumerApplication.class, args);
    }
}

packagecn.itcast.user.controller;
​​importcn.itcast.user.api.UserService;
importcn.itcast.user.domain.User;
importlombok.extern.slf4j.Slf4j;
importorg.apache.dubbo.config.annotation.DubboReference;
importorg.springframework.web.bind.annotation.GetMapping;
importorg.springframework.web.bind.annotation.PathVariable;
importorg.springframework.web.bind.annotation.RequestMapping;
importorg.springframework.web.bind.annotation.RestController;
​@Slf4j@RestController@RequestMapping("/user")
publicclassUserController {
​//引用远程服务@DubboReferenceprivateUserServiceuserService;
​@GetMapping("/username/1")
publicStringfindUserName(@PathVariable("id") Longid) {
returnuserService.queryUsername(id);
    }
}

server:
port: 18080spring:
application:
name: user-consumerlogging:
level:
cn.itcast: debugpattern:
dateformat: HH:mm:ss:SSSdubbo:
registry:
address: nacos://127.0.0.1:8848

packagecn.itcast.user.domain;
importlombok.Data;
importjava.io.Serializable;
@DatapublicclassUserimplementsSerializable {
privateLongid;
privateStringusername;
privateStringaddress;
}