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Ajax学习笔记(六)

2006-08-31 23:29 417 查看

Ajax做的一个简单国际化例子:

data_en.properties 和 newdata_zh.properties为资源文件

data_en.properties:

hello=hello

newdata_zh.properties:

hello=/u4f60/u597d

html文件:test.htm

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
  <title>动态查询显示结果
  </title>
  <script type="text/javascript">
   var xmlHttp;
   function createXMLHTTPRequest()
   {
    if(window.ActiveXObject)
    {
     xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
    }
    else if(window.XMLHttpRequest)
    {
     xmlHttp=new XMLHttpRequest();
    }
   }
   function startRequest(type)
   {
    createXMLHTTPRequest();
    var url="PostData?type="+type+"&timeStamp="+new Date().getTime();
    xmlHttp.onreadystatechange=handleStateChange;
    xmlHttp.open("GET",url,true);
    xmlHttp.send(null);
   }

   function handleStateChange()
   {
    if(xmlHttp.readyState==4)
    {
     if(xmlHttp.status==200)
     {
      document.getElementById("selectdata").innerHTML=xmlHttp.responseText;
     }
    }
   }
   </script>
</head>
<body>

  <input type="button" value="中文" onclick="startRequest('zh');"/><br><br>
  <input type="button" value="英文" onclick="startRequest('en');"/><br><br>
  <div id="selectdata"></div>
</form>
</body>
</html>

java文件:

import java.io.*;
import java.net.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;

public class PostData extends HttpServlet
{
private ServletContext context;
public void init(ServletConfig config)throws ServletException
{
  context=config.getServletContext();
}
protected void doGet(HttpServletRequest req,HttpServletResponse res)throws ServletException,IOException
{
  Properties ps_zh;
    Properties ps_en;
    String responseText;

  res.setContentType("text/xml");
  req.setCharacterEncoding("gb2312");
  res.setCharacterEncoding("gb2312");
  String type=req.getParameter("type");
  //System.out.println(type);
  if(type.equals("en"))
  {
   ps_en=new Properties();
        InputStream in=context.getResourceAsStream("/WEB-INF/data_en.properties");
        ps_en.load(in);
        responseText=(String)ps_en.get("hello");
  }
  else
  {
   ps_zh=new Properties();
        InputStream in=context.getResourceAsStream("/WEB-INF/newdata_zh.properties");
        ps_zh.load(in);
        responseText=(String)ps_zh.get("hello");
  }
  //System.out.println(responseText);
  res.getWriter().print(responseText);
}
protected void doPost(HttpServletRequest req,HttpServletResponse res)throws ServletException,IOException
{
  doGet(req,res);
}
}

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标签： ajax properties xmlhttprequest import string function

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