cityweatherreportclient.java

Java天气预报小程序

import java.rmi.*;

public class cityWeatherReportClient
  {
   /* 城市天气服务器的客户端 */

   public static void main(String[] args)
     {
      Remote remo = null;
      int i = -1;
      cityWeatherReportServer_Factory cwrs_factory = null;      //建立远程服务器的Factory对象
      cityWeatherReportInterface cwri = null;   //建立接口对象
      String RemoteSerHost = null;
      String cityTemperature = null;
      String cityWeatherInfo = null;
      String[] cityName = {"巴    黎","北    京","大    阪","高    雄","汉    堡","汉    城","华 盛 顿","伦    敦","罗    马","马 德 里","曼    谷","温 哥 华","乌鲁木齐","悉    尼","新 加 坡","雅    典","乌鲁木齐","广    州","上    海"};

      try
        {
         RemoteSerHost = "//127.0.0.1/cityWeatherReport_Factory";
         remo = Naming.lookup(RemoteSerHost);
         if(remo instanceof cityWeatherReportServer_Factory)
           {
            cwrs_factory = (cityWeatherReportServer_Factory) remo;
           }

         System.out.println("\n客户机已启动...\n");

         for(i = 0;i < cityName.length;i++)
           {
            try
              {
               /* 开始为每一个查询请求建立一个服务器进程 */
               cwri = new cityWeatherReportServer_Factory().getcityWeatherReport(cityName[i]);

               /* 调用服务器端的getCityTemperature()和getWeatherForecast()方法 */
               cityTemperature = cwri.getCityTemperature();     //提交温度查询
               cityWeatherInfo = cwri.getWeatherForecast();     //提交天气查询
               System.out.println("\n" + cityName[i] + "的天气预报：\n" + "    温    度：" + cityTemperature + "\n    天气情况：" + cityWeatherInfo);
              }
            catch(RemoteException e)
              {
               System.out.println("在提交天气情况查询请求时，系统抛出例外：" + e.toString());
              }
           }
         System.out.println("\n数据传输完毕!");
        }
      catch(Exception e)
        {
         System.out.println("!客户机在运行中抛出例外：" + e.toString());
        }
     }
  }