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<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ page contentType="text/html; charset=gb2312" pageEncoding="gb2312"%>
<%request.setCharacterEncoding("UTF-8"); %>
<%request.setCharacterEncoding("UTF-8"); %>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="b.jsp" method="post">
<input type="text" name="hello" />
<input type="submit" />
</form>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=GB2312"
pageEncoding="GB2312"%>
<%request.setCharacterEncoding("UTF-8"); %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GB2312">
<title>Insert title here</title>
</head>
<body>
${param.hello}<br/>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ page contentType="text/html; charset=gb2312" pageEncoding="gb2312" buffer="50k"%>
//UTF-8编码传过来的参数
String utf8_city_name = request.getParameter("city_name");
//我认为的UTF-8到gb2312的转码方法,不行。
String city_name = new String(utf8_city_name.getBytes("UTF-8"), "gb2312");
new String(utf8_name.getBytes("UTF-8"), "gb2312");