架构优化之SERVICE 层分离----客户端

Posted 2022-11-06 TT_DUL

上一篇通过整合RMI 和 SPRING ，及简单的封装，基本已经实现了SERVICE层，也就是说RMI的服务端已经可以跑起来了，那么接下来lz 继续把客户端的代码及配置介绍一下

1、 首先还是要在客户端所在的应用下面的 src/ 下面 建立context.xml文件，这是RMI的服务的主要配置

<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:p="http://www.springframework.org/schema/p" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd">     


    <bean id="accountService" class="com.vshop.sys.rmi.RmiProxyFactoryBeanNew">  
        <property name="serviceUrl" value="/MessageService" />  
        <property name="serviceInterface" value="com.vshop.busi.rmi.interfaces.AccountService" />
    </bean>

</beans>  

2、 另外，也要把 context.xml 注册到 web.xml 中，以便在应用启动的时候去启动RMI服务

        <context-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>
                classpath*:/applicationContext.xml,classpath*:cxf-server.xml,classpath*:context.xml
            </param-value>
        </context-param>

3、 然后也是要在/src/下面增加prop.properties文件，用来配置 context.xml中的常用参数的

4、 另外呢，在客户端中也是同服务端一样，需要 重写一个类RmiProxyFactoryBean
为RmiProxyFactoryBeanNew，也是在类中 读取了 prop.properties 文件中的配置项

package com.vshop.sys.rmi;

import java.io.IOException;
import java.util.Properties;

import org.springframework.aop.framework.ProxyFactory;
import org.springframework.beans.factory.BeanClassLoaderAware;
import org.springframework.beans.factory.FactoryBean;
import org.springframework.remoting.rmi.RmiClientInterceptor;

import com.vshop.utils.PropUtils;

public class RmiProxyFactoryBeanNew extends RmiClientInterceptor implements FactoryBean<Object>, BeanClassLoaderAware 

    private Object serviceProxy;

    Properties props;
     
        try 
            props = PropUtils.getProps();
         catch (IOException e) 
            e.printStackTrace();
        

        super.setLookupStubOnStartup(Boolean.parseBoolean(props.getProperty("rmi.lookupStubOnStartup")));
        super.setRefreshStubOnConnectFailure(Boolean.parseBoolean(props.getProperty("rmi.refreshStubOnConnectFailure")));
    

    @Override
    public void afterPropertiesSet() 

        setServiceUrlByRmiServer(super.getServiceUrl());

        super.afterPropertiesSet();
        if (getServiceInterface() == null) 
            throw new IllegalArgumentException("Property 'serviceInterface' is required");
        
        this.serviceProxy = new ProxyFactory(getServiceInterface(), this).getProxy(getBeanClassLoader());
    



    public Object getObject() 
        return this.serviceProxy;
    

    public Class<?> getObjectType() 
        return getServiceInterface();
    

    public boolean isSingleton() 
        return true;
    

    public void setServiceUrlByRmiServer(String url)

        Properties props;
            try 
                props = PropUtils.getProps();

                if(url.startsWith("/"))

                    super.setServiceUrl(props.getProperty("rmi.serverHost")+url);

                else
                    super.setServiceUrl(props.getProperty("rmi.serverHost")+"/"+url);
                


             catch (IOException e) 
                e.printStackTrace();
            

    

5、 客户端中接口的定义及所在的包名是要和 服务端中一模一样的，所以就是干脆从服务端中复制到客户端中就可以了

package com.vshop.busi.rmi.interfaces;


public interface AccountService   
    public int queryBalance(String mobileNo);  
    public String shoopingPayment(String mobileNo, byte protocol);  
  

6、 最后就是在 你的CONTROL类中调用 RMI服务了

package com.vshop.speLine.control;


import javax.annotation.Resource;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import com.vshop.busi.rmi.interfaces.AccountService;


@Controller
@RequestMapping("testControl")
public class testControl 
    private static final Logger LOG = LoggerFactory.getLogger(testControl.class);


    @Resource(name = "accountService")
    private AccountService accountService;



    @RequestMapping("/test")
    public ModelAndView speLineList() 


        String result = accountService.shoopingPayment("13800138000", (byte) 5);  


        ModelAndView model = new ModelAndView();
        model.setViewName("/test/testPage");
        return model;
    

至此，一个完整的基于 SSM的RMI服务就已经搭建完成了，如果有什么问题，可以加lz 的QQ：631416605，大家可以相互学习