springboot 集成dubbo

妖狐艹你老母 2022-12-31 12:22 110阅读 0赞

# 自己例子：[https://github.com/nlxs0511/springboot-dubbo.git][https_github.com_nlxs0511_springboot-dubbo.git] #

# 转载例子： https://github.com/zhangxieliu/springboot-dubbo.git  #

### 以下项目以转载例子为例： ###

原项目中TestService是存在 boot-dubbo-api 中的，生产消费都是引用这个TestService文件，所以包路径一定一致，不会有问题。

下面为了测试所以提出来在生产消费者中单独建。

1.项目

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NpbmF0XzM0MzM4MTYy_size_16_color_FFFFFF_t_70][]

2.启动消费者没有生产者异常

java.lang.IllegalStateException: Failed to check the status of the service com.boot.domain.TestService. No provider available for the service com.boot.domain.TestService:1.0.0 from the url zookeeper://127.0.0.1:2181/com.alibaba.dubbo.registry.RegistryService?application=consumer&dubbo=2.5.5&interface=com.boot.domain.TestService&methods=findUser,sayHello&pid=44348&revision=1.0.0&side=consumer&timestamp=1609234120123&version=1.0.0 to the consumer 172.28.189.115 use dubbo version 2.5.5
    	at com.alibaba.dubbo.config.ReferenceConfig.createProxy(ReferenceConfig.java:407) ~[dubbo-2.5.5.jar:2.5.5]
    	at com.alibaba.dubbo.config.ReferenceConfig.init(ReferenceConfig.java:320) ~[dubbo-2.5.5.jar:2.5.5]
    	at com.alibaba.dubbo.config.ReferenceConfig.get(ReferenceConfig.java:159) ~[dubbo-2.5.5.jar:2.5.5]
    	at com.alibaba.dubbo.config.spring.AnnotationBean.refer(AnnotationBean.java:297) ~[dubbo-2.5.5.jar:2.5.5]
    	at com.alibaba.dubbo.config.spring.AnnotationBean.postProcessBeforeInitialization(AnnotationBean.java:228) ~[dubbo-2.5.5.jar:2.5.5]
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:409) [spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1620) [spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555) [spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) [spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) [spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) [spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) [spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) [spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761) [spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867) [spring-context-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543) [spring-context-4.3.11.RELEASE.jar:4.3.11.RELEASE]
    	at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) [spring-boot-1.5.7.RELEASE.jar:1.5.7.RELEASE]
    	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693) [spring-boot-1.5.7.RELEASE.jar:1.5.7.RELEASE]
    	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360) [spring-boot-1.5.7.RELEASE.jar:1.5.7.RELEASE]
    	at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) [spring-boot-1.5.7.RELEASE.jar:1.5.7.RELEASE]
    	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1118) [spring-boot-1.5.7.RELEASE.jar:1.5.7.RELEASE]
    	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107) [spring-boot-1.5.7.RELEASE.jar:1.5.7.RELEASE]
    	at com.boot.ConsumerApplication.main(ConsumerApplication.java:12) [classes/:na]

[windows 安装dubbo 管理控制台 dubbo-admin][windows _dubbo _ dubbo-admin] (下面界面)

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NpbmF0XzM0MzM4MTYy_size_16_color_FFFFFF_t_70 1][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NpbmF0XzM0MzM4MTYy_size_16_color_FFFFFF_t_70 2][]

3. 解决：

@Service 和 @Reference 这两个的注解需要在相同的路径下

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NpbmF0XzM0MzM4MTYy_size_16_color_FFFFFF_t_70 3][]

## 注意： ##

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NpbmF0XzM0MzM4MTYy_size_16_color_FFFFFF_t_70 4][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NpbmF0XzM0MzM4MTYy_size_16_color_FFFFFF_t_70 5][]

4.修改一致后启动成功

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NpbmF0XzM0MzM4MTYy_size_16_color_FFFFFF_t_70 6][]

5.使用redis做注册中心

5.1 pom.xml 会有版本问题

<dependency>
                <groupId>org.apache.dubbo</groupId>
                <artifactId>dubbo-registry-redis</artifactId>
                <version>2.7.5</version>
            </dependency>
    
            <dependency>
                <groupId>redis.clients</groupId>
                <artifactId>jedis</artifactId>
                <version>2.9.0</version>
            </dependency>

5.2 服务提供者配置文件

server:
      port: 8081
    
    spring:
      application:
        name: service-provider
    dubbo:
      application:
        id: service-provider #dubbo提供者的别名，只是个标识
      base-package: com.dubbo.service.impl # dubbo服务发布者所在的包
      registry:
    #    address: zookeeper://127.0.0.1:2181
    #    port: 2181       # zookeeper注册中心的端口
    #    protocol: zookeeper
    #    register: true
        address: redis://127.0.0.1:6379
        port: 6379       # zookeeper注册中心的端口
        protocol: redis
        register: true
      protocol:
        name: dubbo #dubbo协议
        port: 20880 #duboo端口号
        accesslog: true
      provider:
        retries: 1
        delay: -1

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NpbmF0XzM0MzM4MTYy_size_16_color_FFFFFF_t_70 7][]

5.3 消费者配置文件

dubbo:
      application:
        id: consumer #dubbo提供者的别名，只是个标识
      base-package: com.dubbo.controller # dubbo服务发布者所在的包
      registry:
        #注册中心
        #address: zookeeper://127.0.0.1:2181
        address: redis://127.0.0.1:6379

启动项目成功之后reids

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NpbmF0XzM0MzM4MTYy_size_16_color_FFFFFF_t_70 8][]

## 注意：dubbo负载均衡策略 ##

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NpbmF0XzM0MzM4MTYy_size_16_color_FFFFFF_t_70 9][]

[https_github.com_nlxs0511_springboot-dubbo.git]: https://github.com/nlxs0511/springboot-dubbo.git
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[windows _dubbo _ dubbo-admin]: http://xn--https-rfa//blog.csdn.net/sinat_34338162/article/details/111923424
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