springboot整合dubbo3.0

项目结构

父工程只要一个pom.xml

<?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>
    <packaging>pom</packaging>
    <modules>
        <module>dubbo-interface</module>
        <module>dubbo-provider</module>
        <module>dubbo-consumer</module>
    </modules>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.6.5</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>dubbo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>dubbo</name>
    <description>dubbo</description>
    <properties>
        <java.version>1.8</java.version>
        <dubbo-boot.version>3.0.4</dubbo-boot.version>
        <zkClient.version>4.2.0</zkClient.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>${dubbo-boot.version}</version>
        </dependency>
        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-x-discovery</artifactId>
            <version>${zkClient.version}</version>
        </dependency>
    </dependencies>
</project>
 

dubbo-interface

User

package com.example.entity;
 
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
 
import java.io.Serializable;
 
/**
 * @Classname: User
 * @Description:
 * @Author: Stonffe
 * @Date: 2022/11/28 21:57
 */
@Data
@NoArgsConstructor
@AllArgsConstructor
public class User implements Serializable {
    private static final long serialVersionUID = 1L;
    private Integer userId;
    private String username;
}

UserService

package com.example.service;
 
import com.example.entity.User;
 
/**
 * @Classname: UserService
 * @Description:
 * @Author: Stonffe
 * @Date: 2022/11/28 21:59
 */
public interface UserService {
    User getUserById(Integer userId);
    User getUser(String s);
}

dubbo-provider

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>dubbo</artifactId>
        <groupId>com.example</groupId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
 
    <artifactId>dubbo-provider</artifactId>
 
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>3.0.4</version>
        </dependency>
        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-x-discovery</artifactId>
            <version>4.2.0</version>
        </dependency>
        <dependency>
            <groupId>com.example</groupId>
            <artifactId>dubbo-interface</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
        </dependency>
    </dependencies>
    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>
 
</project>

UserServiceImpl

package com.example.impl;
 
import com.example.entity.User;
import com.example.service.UserService;
import org.apache.dubbo.config.annotation.DubboService;
 
import java.util.Arrays;
import java.util.List;
 
/**
 *  @Classname: impl
 *  @Description:
 *  @Author: Stonffe
 *  @Date: 2022/11/28 22:12
 */
@DubboService
public class UserServiceImpl implements UserService {
    private static final List<User> USERS = Arrays.asList(
            new User(1,"sakura"),
            new User(2,"tomoyo")
    );
    @Override
    public User getUserById(Integer userId) {
        for (User u :
                USERS) {
            if (u.getUserId().equals(userId)){
                return u;
            }
        }
        return null;
    }
 
    @Override
    public User getUser(String s) {
        User user = new User(3, s);
        return user;
    }
}

DubboProviderApplicaion

package com.example;
 
import org.apache.dubbo.config.spring.context.annotation.EnableDubbo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
 
/**
 * @Classname: DubboProviderAppliction
 * @Description:
 * @Author: Stonffe
 * @Date: 2022/11/28 22:15
 */
@EnableDubbo
@SpringBootApplication
public class DubboProviderAppliction {
    public static void main(String[] args) {
        SpringApplication.run(DubboProviderAppliction.class,args);
    }
}

application.properties

dubbo.application.name=dubbo-provider
dubbo.registry.address=zookeeper://192.168.100.100:2181
dubbo.protocol.name=dubbo
dubbo.protocol.port=20880

dubbo-consumer

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>dubbo</artifactId>
        <groupId>com.example</groupId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
 
    <artifactId>dubbo-consumer</artifactId>
    <dependencies>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>3.0.4</version>
        </dependency>
        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-x-discovery</artifactId>
            <version>4.2.0</version>
        </dependency>
        <dependency>
            <groupId>com.example</groupId>
            <artifactId>dubbo-interface</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>
    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>
</project>

UserController

package com.example.controller;
 
import com.example.entity.User;
import com.example.service.UserService;
import org.apache.dubbo.config.annotation.DubboReference;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
 
/**
 * @Classname: UserController
 * @Description:
 * @Author: Stonffe
 * @Date: 2022/11/28 22:31
 */
@RestController
public class UserController {
    @DubboReference
    private UserService userService;
    @GetMapping("/user/{userId}")
    public ResponseEntity<User> getUserById(@PathVariable("userId") Integer userId){
        System.out.println("userId = " + userId);
        User user = userService.getUserById(userId);
        System.out.println("user = " + user);
        return ResponseEntity.ok(userService.getUserById(userId));
    }
    @GetMapping("/{user}")
    public ResponseEntity<User> getUser(@PathVariable("user") String user) {
        System.out.println(user);
        User user1 = userService.getUser(user);
        return ResponseEntity.ok(user1);
    }
}

DubboConsumerApplication

package com.example;
 
import org.apache.dubbo.config.spring.context.annotation.EnableDubbo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
 
/**
 * @Classname: DubboConsumerApplication
 * @Description:
 * @Author: Stonffe
 * @Date: 2022/11/28 22:32
 */
@EnableDubbo
@SpringBootApplication
public class DubboConsumerApplication {
    public static void main(String[] args) {
        SpringApplication.run(DubboConsumerApplication.class,args);
    }
}

application.properties

dubbo.application.name=dubbo-consumer
dubbo.registry.address=zookeeper://192.168.100.100:2181
dubbo.protocol.name=dubbo
dubbo.protocol.port=20880
server.port=8081

即便是搭建这样一个小小的案例，也出了很多错误，最后重启了几次服务不知道怎么就解决了