jsp中servlet提交表单出现乱码

madiankun 2009-04-11 08:29:59

如标题所示：运行时出现乱码。用eclipse+lomboz+jboss开发,表单代码如下：
<!DOCTYPE HTML PUBLIC "-//w3c//dtd html 4.0 transitional//en">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GBK">
<title>提交表单数据</title>
</head>
<body bgcolor="#FFFFFF">
<h1 align="center"><b>欢迎登录系统</b></h1>
<form action="getpostdata" method="post">
<p></p>
<table width="52%" border="2" align="center">
<tr bgcolor="#FFFFCC">
<td align="center" width="43%"><div align="center">用户名:</div></td>
<td width="57%"><div align="left">
<input type="text" name="username">
</div></td>
</tr>
<tr bgcolor="#CCFF99">
<td align="center" width="43%"><div align="center">密码:</div></td>
<td width="57%"><div align="left">
<input type="password" name="password">
</div></td>
</tr>
</table>
<p align="center">
<input type="reset" name="Reset" value="重置">
<input type="submit" name="Submit2" value="提交">
</p>
</form>
</body>
</html>
运行结果如下:
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elliotann 2009-04-16

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实在是没办法写一个过滤器类吧

zhuwen9 2009-04-12

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哦..好像在html网页中只能使用GBK
jsp中才能使用UTF-8

wanghao1987 2009-04-12

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在你的action中加上request.setCharacterEncoding("GB2312");

豆虫 2009-04-12

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[Quote=引用 14 楼 chenxinhong98 的回复:]
建议加上过滤器
Java code

package com.house.filter;

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

public class Encoding implements Filter {

public Encoding() {
}

public void doFilter(Serv…
[/Quote]
顶一下，不过最好编码方式改成utf-8

chejingquan 2009-04-12

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14楼说的是可行的，你试试吧，加上过滤器

藍色_斯坦福橋 2009-04-12

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没转码。像上面说的。过滤器很好。

java_coding 2009-04-12

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[Quote=引用 14 楼 chenxinhong98 的回复:]
建议加上过滤器

Java code
package com.house.filter;

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

public class Encoding implements Filter {

public Encoding() {
}

public …
[/Quote]

赞成顶~~~

瞎胡扯 2009-04-12

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这个需要过滤器使用request.setCharacterEncoding("GB2312"); 是不行的，因为当你从表单中把数据取到时，数据已经变为乱码了。所以要使用过滤器
过滤器的编写和配置
import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;

public class pageEncodingFilter implements Filter {

private String encode;

public void destroy() {
this.encode=null;
}

public void doFilter(ServletRequest arg0, ServletResponse arg1,
FilterChain arg2) throws IOException, ServletException {
HttpServletRequest hr=(HttpServletRequest)arg0;
hr.setCharacterEncoding(encode);
arg2.doFilter(arg0, arg1);
}

public void init(FilterConfig arg0) throws ServletException {
String encode=arg0.getInitParameter("encode");
this.encode=encode;
System.out.println("------"+encode);
}

}

在web.xml中的配置


<filter>
<filter-name>pageEncodingFilter</filter-name>
<filter-class>org.tongying.www.model.pageEncodingFilter</filter-class>
<init-param>
<param-name>encode</param-name>
<param-value>gb2312</param-value>
</init-param>
</filter>

<filter-mapping>
<filter-name>pageEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

zhuwen9 2009-04-11

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<!DOCTYPE HTML PUBLIC "-//w3c//dtd html 4.0 transitional//en">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>提交表单数据 </title>
</head>
<body bgcolor="#FFFFFF">
<h1 align="center"> <b>欢迎登录系统 </b> </h1>
<form action="getpostdata" method="post">
<p> </p>
<table width="52%" border="2" align="center">
<tr bgcolor="#FFFFCC">
<td align="center" width="43%"> <div align="center">用户名: </div> </td>
<td width="57%"> <div align="left">
<input type="text" name="username">
</div> </td>
</tr>
<tr bgcolor="#CCFF99">
<td align="center" width="43%"> <div align="center">密码: </div> </td>
<td width="57%"> <div align="left">
<input type="password" name="password">
</div> </td>
</tr>
</table>
<p align="center">
<input type="reset" name="Reset" value="重置">
<input type="submit" name="Submit2" value="提交">
</p>
</form>
</body>

然后记得把response.setContentType("text/html;charset=UTF-8");
项目也用UTF-8的编码