setcharacterencodingfilter.java

struts+spring+hibernate自创框架

package com.pegasus.framework.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 org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class SetCharacterEncodingFilter extends HttpServlet implements Filter {
	protected FilterConfig filterConfig;
	protected final Log logger = LogFactory.getLog(this.getClass());

	protected String encoding;

	protected boolean ignore;

	public SetCharacterEncodingFilter() {
		encoding = "UTF-8";
		ignore = true;
	}

	public void init(FilterConfig filterConfig) throws ServletException {
		this.filterConfig = filterConfig;
		encoding = filterConfig.getInitParameter("encoding") != null ? filterConfig.getInitParameter("encoding") : encoding;
		String value = filterConfig.getInitParameter("ignore");
		if (value == null) {
			ignore = true;
		} else if (value.equalsIgnoreCase("true")) {
			ignore = true;
		} else if (value.equalsIgnoreCase("yes")) {
			ignore = true;
		} else {
			ignore = false;
		}
			
		logger.warn("Filter inited:" + this.filterConfig);
		logger.warn("Filter encodeing:" + encoding);
		logger.warn("Filter ignore:" + ignore);
	}

	public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
		if ((ignore || servletRequest.getCharacterEncoding() == null) && encoding != null) {
			servletRequest.setCharacterEncoding(encoding);
		}
		logger.info("doFileter request:" + ((HttpServletRequest) servletRequest).getServletPath());
		filterChain.doFilter(servletRequest, servletResponse);
	}

	public void destroy() {
	}

}