package com.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;

public class SubmitFilter implements Filter {
	private FilterConfig fc;

	public void doFilter(ServletRequest sRequest, ServletResponse sResponse,FilterChain chain) throws IOException, ServletException {
		HttpServletRequest request=(HttpServletRequest)sRequest;
		String method=request.getMethod();
		
		if(method.equalsIgnoreCase("POST"))
			chain.doFilter(sRequest,sResponse);	
		else{
			request.setAttribute("message","● 不是以POST方式进行的请求！<br>");				
			RequestDispatcher rd=request.getRequestDispatcher("fail.jsp");
			rd.forward(request,sResponse);
		}			
	}
	
	public void init(FilterConfig fc) throws ServletException {
		this.fc=fc;		
	}	
	public void destroy() {
		this.fc=null;
	}
}