setencodingfilter.java

字符集设置过滤器,解决字符集的问题,希望对你游泳!

package com.lgm.framework.filter;
import javax.servlet.*;
import java.io.*;
/**
 * <p>Title: 字符集设置过滤器</p>
 * <p>Copyright: 版权所有</p>
 * <p>Company: </p>
 * @author 李光明
 * @version 1.0
 */
public class SetEncodingFilter implements Filter {
    protected String encoding = null;
    protected FilterConfig filterConfig = null;
    protected boolean ignore = true;
	public void destroy() {
		this.encoding = null;
		this.filterConfig = null;
	}
	public void doFilter(ServletRequest request,ServletResponse response,FilterChain chain) throws IOException, ServletException {
		if (ignore || (request.getCharacterEncoding() == null)) {
			request.setCharacterEncoding(selectEncoding(request));
		}
		chain.doFilter(request, response);
	}
    
	public void init(FilterConfig filterConfig) throws ServletException {
		this.filterConfig = filterConfig;
		this.encoding = filterConfig.getInitParameter("encoding");
		String value = filterConfig.getInitParameter("ignore");
		boolean bIgnore = false;
		if(value == null || value.equalsIgnoreCase("true") || value.equalsIgnoreCase("yes")){
			bIgnore = true;
		}
		this.ignore = bIgnore;
	}
	protected String selectEncoding(ServletRequest request) {
		return (this.encoding);
	}
	public FilterConfig getFilterConfig() {
		return filterConfig;
	}
	public void setFilterConfig(FilterConfig filterConfig) {
		this.filterConfig = filterConfig;
	}
}