url传递参数设置和获取

 <%@ page language="java" contentType="text/uixml; charset=UTF-8" import="java.util.*"%>
<%response.setContentType("application/uixml+xml");request.setCharacterEncoding("GB2312");%>

页面a:

  String err_msg = java.net.URLEncoder.encode("推进指标不存在！","GB2312"); 

   response.sendRedirect(jsppath+"error_confirm.jsp?error_msg="+err_msg );

页面b:

  <msg><%=new String(request.getParameter("error_msg").getBytes("ISO-8859-1"),"GB2312")%></msg>