Java+微信公众号开发学习总结（一）
2.然后用Eclipse新建一个项目，这里我建的是web项目，jdk是1.8，tomcat是8.5.
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html");
String signature = request.getParameter("signature");
String timestamp = request.getParameter("timestamp");
String nonce = request.getParameter("nonce");
String echostr = request.getParameter("echostr");
PrintWriter out = response.getWriter();
if(CheckUtil.checkSignature(signature, timestamp, nonce)){
//如果校验成功，将得到的随机字符串原路返回
out.print(echostr);
}
}
6.回车后等待一会，即可得到公网链接，下图所示阴影区域给出的链接，即可直接访问本机127.0.0.1:8080下的链接内容，分别是http协议和https协议对应的地址：
