java实现防盗链_防盗链代码实现「建议收藏」

[java]代码库package pm_cn.itcast.request;

import java.io.IOException;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

public class RequestDemo3 extends HttpServlet {

public void doGet(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

// 会带过来 : referer: http://localhost:8080/day11/1.html

String headerValue = request.getHeader(“referer”);

response.setContentType(“text/html;charset=utf-8”);

if(headerValue==null|| !headerValue.startsWith(“http://localhost:8080”)){

// 说明是 盗链 过来的 .

response.getWriter().print(“哥们, 你是 盗链 过来的 …”);

}else{

//http://localhost:8080

// 说明 不是 盗链 过来的

response.getWriter().print(” 采访 詹姆斯 “);

}

}

public void doPost(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

doGet(request, response);

}

}