encodingfilter.java

近几年来

package tarena.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.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class EncodingFilter extends HttpServlet implements Filter {
	private String encoding = "gb2312";
	public void init(FilterConfig arg0) throws ServletException {
		String aEncoding = arg0.getInitParameter("encoding");
		if(aEncoding!=null) 
			encoding = aEncoding;
	}

	public void doFilter(ServletRequest arg0, ServletResponse arg1,
			FilterChain arg2) throws IOException, ServletException {
		HttpServletRequest request = ((HttpServletRequest)arg0);
		HttpServletResponse response = ((HttpServletResponse)arg1);		
		request.setCharacterEncoding(encoding);
		//response.setContentType("text/html;charset=utf-8");
		arg2.doFilter(request,arg1);
	}
}