encodfilter.java

采用jsp+javabean实现功能

package caiwu;
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.HttpServlet;


public class EncodFilter extends HttpServlet implements Filter {
	FilterConfig config;

	public void init(FilterConfig parm1)
	throws javax.servlet.ServletException
	{
	this.config = parm1;
	}

	public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain)
	throws java.io.IOException, javax.servlet.ServletException
	{
	if (req.getCharacterEncoding() == null || !req.getCharacterEncoding().equals("UTF-8"))
	{
	req.setCharacterEncoding("gb2312");
	}
	chain.doFilter(req, res);
	}

	public void destroy()
	{
	this.config = null;
	}

}