过滤器有关问题！请帮帮！好
日期：2014-05-18 浏览次数：20714 次
过滤器问题！请各位高手帮帮！好急
原意是在表单提交后通过过滤器解决中文乱码在另一个JSP页面中显示注册信息，是一本书上的代码！
在没有加过滤器的时候除了接收注册信息页面有代码后一切都很正常，加了过滤器servlet后，用JB2005编译出现错误信息：
URL: Unable to open location: Document not found on server
过滤器代码如下
package filter;
import java.io.*;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
class encodingFilter implements Filter{
public void init(FilterConfig filterConfig)throws ServletException
{
}
public void doFilter(ServletRequest req,ServletResponse res,FilterChain chain)throws IOException,ServletException{
req.setCharacterEncoding( "gb2312 ");
chain.doFilter(req,res);
}
public void destroy()
{
}
}
WEB.XML中的设置如下
<filter>
<filter-name> encodingfilter </filter-name>
<filter-class> filter.encodingFilter </filter-class>
</filter>
<filter-mapping>
<filter-name> encodingfilter </filter-name>
<url-pattern> /* </url-pattern>
</filter-mapping>
注册页面userRegist1.jsp如下
<%@ page contentType= "text/html; charset=GBK " %>
<html>
<head>
<title>
新用户注册
</title>
</head>
<body bgcolor= "#ffffff ">
<form method= "POST " action= "acceptUserRegist1.jsp " name= "form1 " >
新用户注册 <br/>
用户名(*): <input type= "text " name= "username " size= "20 "> <br />
密码(*): <input type= "password " name= "userpassword " size= "30 "/>
性别: <input type= "radio " value= "男 " checked name= "sex "/> 男 <input type= "radio " name= "sex " value= "女 " /> 女 <br/>
出生年月: <input type= "text " name= "year " size= "4 "
原意是在表单提交后通过过滤器解决中文乱码在另一个JSP页面中显示注册信息，是一本书上的代码！
在没有加过滤器的时候除了接收注册信息页面有代码后一切都很正常，加了过滤器servlet后，用JB2005编译出现错误信息：
URL: Unable to open location: Document not found on server
过滤器代码如下
package filter;
import java.io.*;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
class encodingFilter implements Filter{
public void init(FilterConfig filterConfig)throws ServletException
{
}
public void doFilter(ServletRequest req,ServletResponse res,FilterChain chain)throws IOException,ServletException{
req.setCharacterEncoding( "gb2312 ");
chain.doFilter(req,res);
}
public void destroy()
{
}
}
WEB.XML中的设置如下
<filter>
<filter-name> encodingfilter </filter-name>
<filter-class> filter.encodingFilter </filter-class>
</filter>
<filter-mapping>
<filter-name> encodingfilter </filter-name>
<url-pattern> /* </url-pattern>
</filter-mapping>
注册页面userRegist1.jsp如下
<%@ page contentType= "text/html; charset=GBK " %>
<html>
<head>
<title>
新用户注册
</title>
</head>
<body bgcolor= "#ffffff ">
<form method= "POST " action= "acceptUserRegist1.jsp " name= "form1 " >
新用户注册 <br/>
用户名(*): <input type= "text " name= "username " size= "20 "> <br />
密码(*): <input type= "password " name= "userpassword " size= "30 "/>
性别: <input type= "radio " value= "男 " checked name= "sex "/> 男 <input type= "radio " name= "sex " value= "女 " /> 女 <br/>
出生年月: <input type= "text " name= "year " size= "4 "
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