encondingfilter.java

简单的学生管理系统,使用的是SQL2005数据库

package com;

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 EncondingFilter implements Filter {
	
	 protected FilterConfig filterConfig;

	    private String         targetEncoding = "UTF-8"; 

	   
	    public void init(javax.servlet.FilterConfig config) throws ServletException
	    {
	        this.filterConfig = config;
	        this.targetEncoding = config.getInitParameter("encoding");
	        System.out.println("123" + this.targetEncoding);
	    }

	  
	    public void doFilter(ServletRequest srequest, ServletResponse sresponse,
	            FilterChain chain) throws IOException, ServletException
	    {
	        HttpServletRequest request = (HttpServletRequest) srequest;
	        request.setCharacterEncoding(targetEncoding);
	        chain.doFilter(srequest, sresponse);
	    }

	    public void setFilterConfing(final FilterConfig filterConfig)
	    {
	        this.filterConfig = filterConfig;
	    }

	
	    public void destroy()
	    {
	        this.filterConfig = null;

	}

}

/*<filter>
<filter-name>encoding</filter-name>
<filter-class>com.EncondingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>*/