characterencodingfilter.java

一个简单的BBS系统 适用于初学者用JSP和连接池 开发系统

package webbook.chapter15;

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;

public class CharacterEncodingFilter implements Filter {
	private FilterConfig config;

	private String encoding = "ISO8859_1";

	public void destroy() {
		config = null;
	}

	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
			throws IOException, ServletException {
		request.setCharacterEncoding(encoding);
		chain.doFilter(request, response);
	}

	public void init(FilterConfig config) throws ServletException {
		this.config = config;
		encoding = config.getInitParameter("encoding");
	}

}