req.setCharacterEncoding("GBK")怎么不起作用?
我的servlet中: 
 protected   void   doGet(HttpServletRequest   req,   HttpServletResponse   resp) 
 			throws   
ServletException,   
IOException   { 
 req.setCharacterEncoding( "GBK "); 
 String   fromAccount   =   req.getParameter( "from ");   
 resp.setContentType( "text/html;   charset=GBK "); 
 java.io.PrintWriter   out   =   resp.getWriter(); 
 out.println(fromAccount); 
 out.println( "你好 "); 
 }   
 我已经设置接收参数的编码格式req.setCharacterEncoding( "GBK ");但我用 
 ./WebTest?from=谢谢 
 调用则显示是乱码,而out.println( "你好 ");则可以正常显示 
 除非我在程序中再转换一次才能显示中文 
 fromAccount   =   new   String(fromAccount.getBytes( "ISO-8859-1 "),    "GBK "); 
 难道req.setCharacterEncoding( "GBK ");不起作用么?
------解决方案--------------------JSP页面编码改GBK试试?
------解决方案--------------------在TOMCAT5 中setCharacterEncoding好像只能对POST方式传送的参数有效!TOMCAT5中对POST和GET是使用不同的方式处理的,你需要对TOMCAT进行配置或者自己进行转码。