JSP乱码解决 - 使用过滤器Filter

  1、SetCharacterEncoding.java

  package com.servlet;

  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 SetCharacterEncoding implements Filter{

  protected FilterConfig filterConfig = null;

  protected String encoding = null;

  public void init(FilterConfig filterConfig)throws ServletException{

  this.filterConfig = filterConfig ;

  this.encoding = filterConfig.getInitParameter("encoding");

  }

  public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException , ServletException {

  String encoding=this.encoding;

  if(encoding != null){

  request.setCharacterEncoding(encoding);

  response.setCharacterEncoding(encoding);

  }

  chain.doFilter(request, response);

  }

  public void destroy() {

  this.encoding = null;

  this.filterConfig = null;

  }

  }

  2、web.xml

  

  EncodingFilter

  com.servlet.SetCharacterEncoding

  

  encoding

  UTF-8

  

  

  

  EncodingFilter

  /*

  

  Web.xml中的UTF-8要和JSP中的<%@ page language="java" import="java.util.*"pageEncoding="utf-8"%>的一样。

 

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