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分享A标签中传递的中文参数在另一个JSP页面用request.getParameter()接收时出现中文乱码问题
有两个JSP页面:test1.jsp和test2.jsp,两个页面的编码方式都是UTF-8。其中在test.jsp中有一个超链接： <a style = "text-decoration:none;" href = "test6.jsp?title=<%out.println("价格最贵的MP4");%>">超链接</a>。在test2.jsp中用request.getParameter("title")接收，地址栏中都能看到传过来的是中文：“http://localhost:8080/test/test2.jsp?title=价格最贵的MP4”但接收过来的老是乱码,只能显示出MP4这几个英文字母。自己找了老半天还是找不出问题的所在,所以只能请朋友们帮忙看下了。具体代码如下：
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'test1.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<a style = "text-decoration:none;" href = "test2.jsp?title=<%out.println("价格最贵的MP4");%>">超链接</a>
</body>
</html>
test2页面
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'test6.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<%
//设置接收参数的编码方式
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
String title = null;
if (request.getParameter("title") != null) {
title = (String) request.getParameter("title");
out.println("标题:" + title);
//乱码：标题:ä»·æ ¼æè´µçMP4
}
%>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'test1.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<a style = "text-decoration:none;" href = "test2.jsp?title=<%out.println("价格最贵的MP4");%>">超链接</a>
</body>
</html>
test2页面
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'test6.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<%
//设置接收参数的编码方式
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
String title = null;
if (request.getParameter("title") != null) {
title = (String) request.getParameter("title");
out.println("标题:" + title);
//乱码：标题:ä»·æ ¼æè´µçMP4
}
%>
</body>
</html>
...全文
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zhuang18750596059 2012-07-31
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终于解决了，谢谢二楼！
zhangbaolong 2011-10-11
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谢谢 二楼的
whenwho 2010-03-13
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嗯！用 #2 的解决了！
swandragon 2009-10-10
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使用表单传递参数可以通过get和post方式传递参数,也可以通过连接的方式传递参数,这个传递参数的方式实际上就是get方式传递参数，这种方式传递中文也可以产生乱码
解决方法:修改服务器的<Connector URIEncoding="utf-8">
解决方法:修改服务器的<Connector URIEncoding="utf-8">
gukuitian 2009-10-10
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<%
//设置接收参数的编码方式
//这个setCharacterEncoding只用于post,get是不好使的,
//request.setCharacterEncoding("UTF-8");
//response.setCharacterEncoding("UTF-8");
String title = null;
if (request.getParameter("title") != null) {
//这个比较好用，试试看
title = new String(request.getParameter("title").getBytes("iso8859-1"),"utf-8");
out.println("标题:" + title);
//乱码：标题:ä»·æ ¼æè´µçMP4
}
%>
howsun_zh 2009-10-10
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这样肯定是乱码，一般post方法传送汉字，会经过自己写好的编码转化过滤器经过了转码，这样request得到的值不会乱，而LZ是通过get传送汉字，所以得把request对象重写，增加转码方法。贴下代码吧：
使用：
package com.chinaot.web.servlet;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* 说明:<br>
*
* @author 张纪豪
* @version
* Build Time Sep 13, 2009
*/
public class MyHttpServletRequest extends HttpServletRequestWrapper {
protected Log log = LogFactory.getLog(getClass());
private static final String ENCODED = "UTF-8",DECODE="ISO8859-1";
public MyHttpServletRequest(HttpServletRequest request) {
super(request);
}
@Override
public String getQueryString() {
String queryString = super.getQueryString();
if(queryString != null){
try {
return new String(queryString.getBytes(DECODE),ENCODED);
} catch (UnsupportedEncodingException e) {
log.info(e.getMessage(),e);
}
}
return queryString;
}
@Override
public String getParameter(String name) {
String value = super.getParameter(name);
if (value != null) {
try {
return new String(value.getBytes(DECODE), ENCODED);
} catch (UnsupportedEncodingException e) {
log.info(e.getMessage(),e);
}
}
return value;
}
@SuppressWarnings("unchecked")
@Override
public Map getParameterMap() {
Map<String, String[]> values = super.getParameterMap();
Map<String, String[]> valuesMap = new HashMap<String, String[]>();
Set<String> names = values.keySet();
for (Iterator<String> iter = names.iterator(); iter.hasNext();) {
String name= iter.next();
String[] v = values.get(name);
if(v != null) {
String[] valuesCopy = new String[v.length];
for(int i = 0; i < v.length; i++) {
try {
valuesCopy[i] = new String(v[i].getBytes(DECODE), ENCODED);
} catch (UnsupportedEncodingException e) {
log.info(e.getMessage(),e);
}
}
valuesMap.put(name, valuesCopy);// 向新Map放入转码过的值
}
}
return valuesMap;// 返回是副本
}
@Override
public String[] getParameterValues(String name) {
String[] values = super.getParameterValues(name);
if(values != null) {
String[] valuesCopy = new String[values.length];//原数组是只读的，不能修改
for(int i = 0; i < values.length; i++) {
try {
valuesCopy[i] = new String(values[i].getBytes(DECODE), ENCODED);
} catch (UnsupportedEncodingException e) {
log.info(e.getMessage(),e);
}
}
return valuesCopy;
}
return values;
}
}
使用：
<%
reqeust = new MyHttpServletRequest(request);
title = (String) request.getParameter("title");
out.println(title);
%>
myyhml 2009-10-10
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TO：zhangjihao
谢谢了。呵呵，看起来有点复杂。用了楼上gukuitian这位朋友的方法，问题终于搞定了。
谢谢了。呵呵，看起来有点复杂。用了楼上gukuitian这位朋友的方法，问题终于搞定了。
myyhml 2009-10-10
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TO：gukuitian
reqeust = new MyHttpServletRequest(request);还是有问题。代码下的红线处提示：MyHttpServletRequest cannot be resolved to a type这样的错误。 MyHttpServletRequest的用法能不能再具体点。可不可以举个简单的例子来说明一下。
reqeust = new MyHttpServletRequest(request);还是有问题。代码下的红线处提示：MyHttpServletRequest cannot be resolved to a type这样的错误。 MyHttpServletRequest的用法能不能再具体点。可不可以举个简单的例子来说明一下。
wangjn1982 2009-10-10
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你在服务器中把url的？后面的部分转下码。试一试
//url的？后面的部分
String parm = new String(httpServletRequest.getQueryString().getBytes("UTF-8"));
public static String setParam(String param){
String[] params = param.split("&");
String[] setParam = new String[2];
String rtn = "";
for(int i = 0;i < params.length;i++){
setParam = params[i].split("=");
if(setParam.length==2){
try {
rtn += setParam[0] + "=" + URLEncoder.encode(setParam[1], "gbk") + "&";
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
rtn = rtn.substring(0, rtn.length()-1);
System.out.println("rtn = " + rtn);
return rtn;
}
//url的？后面的部分
String parm = new String(httpServletRequest.getQueryString().getBytes("UTF-8"));
public static String setParam(String param){
String[] params = param.split("&");
String[] setParam = new String[2];
String rtn = "";
for(int i = 0;i < params.length;i++){
setParam = params[i].split("=");
if(setParam.length==2){
try {
rtn += setParam[0] + "=" + URLEncoder.encode(setParam[1], "gbk") + "&";
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
rtn = rtn.substring(0, rtn.length()-1);
System.out.println("rtn = " + rtn);
return rtn;
}
myyhml 2009-10-10
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TO: swandragon
谢谢了，用了楼上gukuitian这位朋友的方法，问题总算解决了。
但修改服务器的<Connector URIEncoding="utf-8">，具体怎么修改？我还是有点不大明白。呵呵！
谢谢了，用了楼上gukuitian这位朋友的方法，问题总算解决了。
但修改服务器的<Connector URIEncoding="utf-8">，具体怎么修改？我还是有点不大明白。呵呵！
myyhml 2009-10-10
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TO：gukuitian
谢谢了，照你的方法去试了一下，问题总算解决了。呵呵，但还是有点模糊，
在title = new String(request.getParameter("title").getBytes("iso8859-1"),"utf-8"); 中，其中.getBytes("iso8859-1"),"utf-8")：是指将utf-8转换为iso8859-1编码还是将iso8859转换为utf-8编码呢？
谢谢了，照你的方法去试了一下，问题总算解决了。呵呵，但还是有点模糊，
在title = new String(request.getParameter("title").getBytes("iso8859-1"),"utf-8"); 中，其中.getBytes("iso8859-1"),"utf-8")：是指将utf-8转换为iso8859-1编码还是将iso8859转换为utf-8编码呢？
