encodefilter.java

很好的东东 本人随便做的 仅供学习之用

package filter;


	import java.io.IOException;
	import javax.servlet.*;
	import javax.servlet.http.HttpServletRequest;
	public class EncodeFilter implements Filter
	{
	    protected FilterConfig filterConfig;
	    private String targetEncoding;
	    public EncodeFilter()
	    {
	        targetEncoding = "gb2312";//直接初始化0912
	    }
	    public void init(FilterConfig filterconfig) throws ServletException
	    {
	        filterConfig = filterconfig;
	        //targetEncoding = filterconfig.getInitParameter("encoding");//web.xml挂参初始化
	    }
	    public void doFilter(ServletRequest servletrequest, ServletResponse servletresponse, FilterChain filterchain)
	        throws IOException, ServletException
	    {
	        HttpServletRequest httpservletrequest = (HttpServletRequest)servletrequest;
	        httpservletrequest.setCharacterEncoding(targetEncoding);
	        System.out.println("使用targetEncoding对请求进行编码过滤");
	        filterchain.doFilter(servletrequest, servletresponse);
	    }
	    public void setFilterConfig(FilterConfig filterconfig)
	    {
	        filterConfig = filterconfig;
	    }
	    public void destroy()
	    {
	        filterConfig = null;
	    }

}