encodingfilter.java

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package com.zjxy.encode;
	/*
	 * Copyright 2002 Sun Microsystems, Inc. All rights reserved.
	 *
	 * Redistribution and use in source and binary forms, with or without
	 * modification, are permitted provided that the following conditions
	 * are met:
	 *
	 * - Redistributions of source code must retain the above copyright
	 *   notice, this list of conditions and the following disclaimer.
	 *
	 * - Redistribution in binary form must reproduce the above copyright
	 *   notice, this list of conditions and the following disclaimer in
	 *   the documentation and/or other materials provided with the
	 *   distribution.
	 *
	 * Neither the name of Sun Microsystems, Inc. or the names of
	 * contributors may be used to endorse or promote products derived
	 * from this software without specific prior written permission.
	 *
	 * This software is provided "AS IS," without a warranty of any
	 * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
	 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
	 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
	 * EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES
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	 * PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF
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	 * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
	 *
	 * You acknowledge that Software is not designed, licensed or intended
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	 */
	 



	/**
	 * Create Jstar
	 * @author PetStore
	 *
	 */
	import javax.servlet.FilterConfig;
	import javax.servlet.ServletRequest;
	import javax.servlet.ServletResponse;
	import javax.servlet.FilterChain;
	import javax.servlet.http.HttpServletRequest;
	import javax.servlet.Filter;


	/**
	 * <p>Title: EAF(Enterprise Application Framework)</p>
	 * <p>Description: 用于设定Request的编码方式</p>
	 * <pre>请在web.xml中定义本Filter,配置如下:
	 *    <filter>
	 *       <filter-name>EncodingFilter</filter-name>
	 *       <display-name>EncodingFilter</display-name>
	 *       <description>Set the request encoding</description>
	 *       <filter-class>com.netstar.zhuhai.eaf.web.EncodingFilter</filter-class>
	 *       <init-param>
	 *            <param-name>encoding</param-name>
	 *            <param-value>UTF-8</param-value>
	 *       </init-param>
	 *    </filter>
	 *
	 *    <filter-mapping>
	 *        <filter-name>EncodingFilter</filter-name>
	 *        <url-pattern>/*</url-pattern>
	 *    </filter-mapping>
	 * </pre>
	 * @version 1.0
	 */


	public class EncodingFilter implements Filter {
	  private FilterConfig config = null;
	  private String targetEncoding = "ASCII";


	  public EncodingFilter() {
	  }
	  public void init(FilterConfig filterconfig) throws javax.servlet.ServletException {
	 this.config = filterconfig;
	 this.targetEncoding = config.getInitParameter("encoding");
	  }
	  public void doFilter(ServletRequest srequest, ServletResponse sresponse, FilterChain filterchain) throws java.io.IOException, javax.servlet.ServletException {
	 HttpServletRequest request = (HttpServletRequest)srequest;


	 //set the encoding
	 request.setCharacterEncoding(this.targetEncoding);


	 //move to next
	 filterchain.doFilter(srequest,sresponse);
	  }
	  public void destroy() {
	 this.config = null;
	 this.targetEncoding = null;
	  }


	}