doubbo+zookeeper服务注册发现

深碍√TFBOYSˉ_ 2023-10-04 12:06 46阅读 0赞

### Dubbo及Zookeeper安装 ###

[Dubbo及Zookeeper安装][Dubbo_Zookeeper]

### java示例 ###

1.  IDEA创建一个空项目；
2.  创建一个模块，实现服务提供者：provider-server ， 选择web依赖即可

Pom依赖：

<dependency>
                <groupId>org.apache.dubbo</groupId>
                <artifactId>dubbo-spring-boot-starter</artifactId>
                <version>2.7.3</version>
            </dependency>
            <dependency>
                <groupId>com.github.sgroschupf</groupId>
                <artifactId>zkclient</artifactId>
                <version>0.1</version>
            </dependency>
            
            <dependency>
                <groupId>org.apache.curator</groupId>
                <artifactId>curator-framework</artifactId>
                <version>2.12.0</version>
            </dependency>
            <dependency>
                <groupId>org.apache.curator</groupId>
                <artifactId>curator-recipes</artifactId>
                <version>2.12.0</version>
            </dependency>
            <dependency>
                <groupId>org.apache.zookeeper</groupId>
                <artifactId>zookeeper</artifactId>
                <version>3.4.14</version>
                
                <exclusions>
                    <exclusion>
                        <groupId>org.slf4j</groupId>
                        <artifactId>slf4j-log4j12</artifactId>
                    </exclusion>
                </exclusions>
            </dependency>

#当前应用名字
    dubbo.application.name=provider-server
    #注册中心地址
    dubbo.registry.address=zookeeper://127.0.0.1:2181
    #扫描指定包下服务
    dubbo.scan.base-packages=com.example.service.impl

编写服务：TicketServiceImpl.java

@Service //将服务发布出去，这里一定要用 dubbo包下的
    //亲测 @Component 无用，不会启动客户端的 zookeeper
    public class TicketServiceImpl implements ITicketService {
        
        @Override
        public String getTicket() {
        
            return "一张票";
        }
    }

**启动测试服务提供者是否正常**

1.  开启zookeeper
2.  打开dubbo-admin实现监控（可略过，只是方便查看）
3.  开启服务者  
    这步测试了好久，刚开始是service层没有用@Service，改完了还不行 又换版本，最后清里idea的缓存重新运行就好了  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzg0NzI4Mw_size_16_color_FFFFFF_t_70]  
    **消费服务**
    
    1.  创建一个模块，实现服务提供者：consumer-server ， 选择web依赖即可
    2.  引入pom依赖，同上
    3.

server.port=8002
    # 谁消费了服务
    dubbo.application.name=cunsumer-server
    # 注册中心地址
    dubbo.registry.address=zookeeper://127.0.0.1:2181

UserServiceImpl.java  
将provider-server下 ITicketService 拷贝至consumer-server下（interface的目录一定要对应）

@Service  //这里是spring下的
    public class UserServiceImpl implements IUserService {
        
        @Reference   // dubbo包下，Pom坐标，可以定义路径相同的接口名
        ITicketService ticketService;
        
        @Override
        public void buyTicket() {
        
           String string = ticketService.getTicket();
            System.out.println("买到了" + string);
        }
    }

**测试**

@SpringBootTest
    class ConsumerServerApplicationTests {
        
        @Autowired
        IUserService userService;
    
        @Test
        void contextLoads() {
        
            userService.buyTicket();
        }
    }

结果：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzg0NzI4Mw_size_16_color_FFFFFF_t_70 1]

**注：**一定要开启 zookeeper服务，消费者引入提供者的接口类路径一定要和提供者的接口名一致，  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzg0NzI4Mw_size_16_color_FFFFFF_t_70 2]

[Dubbo_Zookeeper]: https://xy5462.blog.csdn.net/article/details/116176654
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzg0NzI4Mw_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20210428151828157.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzg0NzI4Mw==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzg0NzI4Mw_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20210428164510959.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzg0NzI4Mw==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzg0NzI4Mw_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20210428165240146.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzg0NzI4Mw==,size_16,color_FFFFFF,t_70