jshell 如何调用 dubbo 远程服务接口

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#如题，背景如下：我目前处于处于软件实施这个岗位，平时会用 python 处理一些数据。所以，对 java 理解甚少。公司的各个系统是用 dubbo 连接各个服务的。但 python 没有可以调 dubbo 协议接口的库，所以我想通过 jshell 来调用 dubbo 接口。 #测试使用的是dubbo 示例中的 dubbo-samples-protobuf ，我把服务和客户端分别放在两台机器上，用 maven 编译测试成功后。把 traget 文件夹下 lib 里的 jar 包复制到 jshell 自定义的 class 文件夹里。然后用 jshell 进行测试，代码如下

import org.springframework.context.support.ClassPathXmlApplicationContext; ClassPathXmlApplicationContext cOntext= new ClassPathXmlApplicationContext("file:/home/dubbo-consumer.xml"); context.start();

以上代码片段没有报错，接着输入下面代码，回车测试

context.getBean("demoService")

然后报错了：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'demoService': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalStateException: org.apache.dubbo.demo.DemoService at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:177) at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:103) at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1640) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:254) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1080) at .(#27:1)

然后换成下方代码，再运行同样报错：

public interface DemoService { String sayHello(String name); }; public class DemoServiceImpl implements DemoService { public String sayHello(String name) { return "Hello " + name; } }; DemoService demoService = (DemoService)context.getBean("demoService");

#恳请广大 V 友告知这是为啥报错呢？如果我想用 jshell 来调用 dubbo 远程服务接口，该怎么办呢？

Supplement 1 Jul 16, 2022

版本为jdk10，以下为xml配置：

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dubbo="http://dubbo.apache.org/schema/dubbo" xmlns="http://www.springframework.org/schema/beans" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd http://dubbo.apache.org/schema/dubbo http://dubbo.apache.org/schema/dubbo/dubbo.xsd"> <dubbo:application name="demo-consumer"/> <dubbo:registry address="zookeeper://192.168.1.122:2181" timeout="8000"/> <dubbo:reference id="demoService" check="false" interface="org.apache.dubbo.demo.DemoService"/> </beans>

同样的配置用教程编译出来的jar文件来运行是可以的

Supplement 2 Oct 24, 2022

评论都没说到点子上。现在，我找到解决方法了，泛化调用可以解决这个问题。医生说得对，人一定要靠自己！

7 replies 2022-07-17 10:33:03 +08:00