ipfilter.java

来自「java大型企业DRP系统源码带sql数据库」· Java 代码 · 共 38 行

package com.bjsxt.drp.util.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;

public class IpFilter implements Filter {
	
	private FilterConfig filterConfig;
	
	public void destroy() {
		// TODO Auto-generated method stub

	}

	public void doFilter(ServletRequest req, ServletResponse res,
			FilterChain chain) throws IOException, ServletException {
		String ip = req.getRemoteAddr();
		System.out.println("ip==" + ip);
		String ips = filterConfig.getInitParameter("ip");
		if (ips.indexOf(ip) != -1) {
			res.getWriter().println("你的IP非法！");
			return;
		}
		chain.doFilter(req, res);
	}

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

}