url，sendRedirect当中有中文

3.url，sendRedirect当中有中文

中文当想出现在url当中，或通过网络http header或request的parameter或response传送时，得需要变成iso格式传送，到目的地后，再用GBK转换一下，人才能看懂。

例 1.3.1

jsp5.jsp:

<%@ page contentType="text/html; charset=GBK" %>
<html>
<body>
<h1>
<a href="MarkToWinServlet?name=马克-to-win">ok</a>
<a href="show.jsp?name=马克-to-win">ok</a>
</h1>
<form action="MarkToWinServlet" method="POST">
<input type="submit"/>
</form>
</body>
</html>

package com;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class ServletHello1 extends HttpServlet {
      private static final String CONTENT_TYPE = "text/html; charset=GBK";
      public void doPost(HttpServletRequest request, HttpServletResponse response) throws
          ServletException, IOException {
        response.setContentType(CONTENT_TYPE);
        PrintWriter out = response.getWriter();
    //    out.println("马克-to-win");
        String str="马克-to-win";
    /* you can use the following either one to encode.
str.getBytes("GBK")，用GBK方式把字符串变成数组，

    public static String encode(String s,String enc)   : Translates a string into
     application/x-www-form-urlencoded format using a specific encoding scheme.
         */
     // str=java.net.URLEncoder.encode(str,"GBK");
/* 中文当想出现在url当中，或通过网络传送时，得需要变成iso格式传送，URLEncoder方法的用意和下面一模一样，只不过地址栏里人眼看不懂，其他都一样。这里不能变成UTF-8，也许我们机器缺省是GBK，所以eclipse用GBK等。*/
        str = new String(str.getBytes("GBK"), "iso-8859-1");
        response.sendRedirect("home.jsp?username="+str);
      }
      public void doGet(HttpServletRequest request, HttpServletResponse response) throws
      ServletException, IOException {
/*中文当想出现在url当中，或通过网络传送时，得需要变成iso格式传送，*/
            String str = request.getParameter("name");
            System.out.println(str);
            if(str != null){
              try {
                str = new String(str.getBytes("ISO-8859-1"), "GBK");
                System.out.println(str);
/*下句话不能少，否则response不是中文*/
                response.setContentType(CONTENT_TYPE);
                response.getWriter().println("response STR"+str);
              }
              catch (UnsupportedEncodingException ex) {
              }
            }
      }