sincalculateclient.java

J2EE编程实例

import java.rmi.*;
import java.net.*;

public class sinCalculateClient
  {
   /* 这是计算引擎的Client端的程序 */
   /* 其作用是提交参数和显示计算服务器回复的计算结果 */

   public static void main(String[] args)
     {
      sinCalculateClient sc = new sinCalculateClient();
      String RemoteSerHost = null;      //定义远程服务器连接串
      int x[] = new int[13];    //存放函数自变量值
      double y[] = new double[13];    //存放函数应变量值
      int j = -1;

      x = sc.ConvertStrToInt(args);     //转换数值类型（String -> int）
      RemoteSerHost = "//127.0.0.1/BlueICE";

      try
        {
         /* 建立远程接口（Remote Interface）对象 */
         System.out.print("开始建立Remote Server连接...");
         sinCalculateInterface sci = (sinCalculateInterface)Naming.lookup(RemoteSerHost);
         System.out.print("...连接成功！\n\n开始进行Remote Calculate ...\n\n");

         for(j = 0;j < x.length;j++)
           {
            try
              {
               /* 调用服务器端的CalculateSin()方法进行计算，然后接收服务器反馈的结 */
               y[j] = sci.CalculateSin(x[j]);
               System.out.println("x = " + x[j] + " --> Server , y = " + y[j] + " --> Client");
              }
            catch(Exception e)
              {
               y[j] = -1;
               System.out.println("x = " + x[j] + " --> Server , y = error! --> Client");
              }
           }
         System.out.println("\n完成计算");

        }
      catch(Exception e)
        {
         System.out.println("Client端程序抛出例外：" + e.toString());
        }
     }

   private int[] ConvertStrToInt(String[] Str)
     {
      /* 这是一个将字符串变量值转换成整型变量值的方法（函数） */

      int i = -1;
      String v = null;
      int c = -1;
      int Result[] = new int[Str.length];

      for(i = 0;i < Str.length;i++)
        {
         /* 开始转换 */
         try
           {
            c = Integer.parseInt(Str[i]);
            Result[i] = c;
           }
         catch(Exception e)
           {
            Result[i] = 0;
           }
        }

      return Result;
     }
  }