Post method is generally in the form page when the form submission method used,...

代码说明：

Post方法一般是在网页的form表单提交的时候用的方法，是html的方法， 现在我必须在java类里面模拟这个post方法， 那我自然就想到了java.net.HttpURLConnection 来实现-Post method is generally in the form page when the form submission method used, the method is html, and now I have to type in java methods inside the simulation of this post, I naturally thought of java.net.HttpURLConnection to achieve