求过滤器

Question

我想要一个解决jsp乱码的过滤器
据说有一劳永逸的那种
给我提供一个吧
最好有怎们用
我是新手！
谢谢各位

Answer 1

这是过滤器的类
import javax.servlet.*;
import javax.servlet.http.HttpServlet;
import java.io.IOException;
public class MyFilter extends HttpServlet implements Filter {
    private FilterConfig filterConfig;    public void init(FilterConfig filterConfig) throws ServletException {
        this.filterConfig = filterConfig;
    }    public void doFilter(ServletRequest request, ServletResponse response,
                         FilterChain filterChain) {        try {
            request.setCharacterEncoding("GBK");
            filterChain.doFilter(request, response);        } catch (ServletException sx) {
            filterConfig.getServletContext().log(sx.getMessage());
        } catch (IOException iox) {
            filterConfig.getServletContext().log(iox.getMessage());
        }
    }    public void destroy() {
    }
}
web.xml里加上这几句<filter>
    <filter-name>filter</filter-name>
    <filter-class>你的过滤类路径</filter-class>
    <init-param>
      <param-name>encoding</param-name>
      <param-value>GB2312</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>filter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

Answer 2

这是过滤器的类
import javax.servlet.*;
import javax.servlet.http.HttpServlet;
import java.io.IOException;/**
*
* Date: 2005-9-19
* Time: 17:33:36
* @author Duzk
*/
public class MyFilter extends HttpServlet implements Filter {
private FilterConfig filterConfig;
//Handle the passed-in FilterConfig
public void init(FilterConfig filterConfig) throws ServletException {
this.filterConfig = filterConfig;
}//Process the request/response pair
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain filterChain) {try {
request.setCharacterEncoding("GBK");
filterChain.doFilter(request, response);} catch (ServletException sx) {
filterConfig.getServletContext().log(sx.getMessage());
} catch (IOException iox) {
filterConfig.getServletContext().log(iox.getMessage());
}
}//Clean up resources
public void destroy() {
}
}然后在web.xml里加上这段
<filter>
<filter-name>MyFilter</filter-name>
<filter-class>类路径.MyFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>MyFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

Answer 3

用我的一个实例吧。。虽然不咋地。嘿嘿
web.xml<filter>
   <filter-name>charsetFilter</filter-name>
   <filter-class>com.magic.store.CharSetFilter</filter-class>
  </filterCharSetFilter.java
package com.magic.store;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 CharSetFilter implements Filter{ public void init(FilterConfig arg0) throws ServletException {
// TODO Auto-generated method stub

} public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
// TODO Auto-generated method stub

HttpServletRequest request= (HttpServletRequest)servletRequest;


String tmp=request.getRequestURI();
if(tmp.indexOf(".jsp")!=-1||tmp.indexOf(".do")!=-1)
{
request.setCharacterEncoding("GBK");
}
filterChain.doFilter(servletRequest,servletResponse);
} public void destroy() {
// TODO Auto-generated method stub

}}

Answer 4

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

Answer 5

1楼的哥们```是不是copy我代码啊``昏```
  你看过我回的帖子吧？如果不是，那对不起``
   如果是，被抢生意啊```昏``要求原创啊``这年头，分不好赚啊！

Answer 6

注意。这种方法不能屏蔽GET方法提交数据中的乱码问题