tokenfilter.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.HttpServletRequest;

import org.apache.struts.Globals;
import org.apache.struts.util.TokenProcessor;


public class TokenFilter implements Filter {
	public static final String TOKEN_KEY = Globals.TRANSACTION_TOKEN_KEY;

	private FilterConfig fc = null;

	public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
		HttpServletRequest request = (HttpServletRequest) req;
		if (request.getSession().getAttribute(TOKEN_KEY) == null) {
			TokenProcessor.getInstance().saveToken(request);
		}
		chain.doFilter(req, res);
	}

	public void init(FilterConfig filterConfig) {
		this.fc = filterConfig;
	}

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

}