encodingfilter.java

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/**
 * 
 */
package com.ccniit.kaoqin.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;
import javax.servlet.http.HttpServletRequest;

/**
 * 编写小组：邓从伟（张强_李楠）
 *
 */
public class EncodingFilter implements Filter {
	//编码方式
	private String targetEncoding = "gb2312"; 
	
	protected FilterConfig filterConfig;

	public void destroy() {
		// TODO 自动生成方法存根
		this.filterConfig=null; 

	}

	public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain chain) throws IOException, ServletException {
		// TODO 自动生成方法存根
		
		HttpServletRequest request=(HttpServletRequest)arg0;
		 request.setCharacterEncoding(targetEncoding);//把请求用指定的方式编码 
		      // 把处理发送到下一个过滤器 
	      chain.doFilter(arg0,arg1);  
		
		
		
	}

	public void init(FilterConfig config) throws ServletException {
		// TODO 自动生成方法存根
		 this.filterConfig = config; 
		this.targetEncoding = config.getInitParameter("encoding"); 

	}
	
	public void setFilterConfig(final FilterConfig filterConfig) 
	 { 
	   this.filterConfig=filterConfig; 
	  } 
	 
	 /**
	在这里是过滤器重新设置获得编码为gb2312 
	<filter> 
     <filter-name>encoding</filter-name>  
           <filter-class>EncodingFilter</filter-class>  
           <init-param> 
             <param-name>encoding</param-name> 
             <param-value>gb2312</param-value> 
  
     </init-param> 
    </filter>     
    <filter> 
     <filter-name>auth</filter-name> 
     <filter-class>LoginFilter</filter-class> 
    </filter> 
     
    <filter-mapping>  
       <filter-name>encoding</filter-name>  
       <url-pattern>/*</url-pattern>   
     </filter-mapping>   
    <filter-mapping> 
      <filter-name>auth</filter-name> 
     <url-pattern>/target.jsp</url-pattern> 
    </filter-mapping>     
*/
	
	
	
	
	
	
	
	
	
	
	
	
	


}