一一对应。。

System.out.println("-----ServletPath---" + request.getServletPath());
  System.out.println("-----ContextPath---" + request.getContextPath());
  System.out.println("-----referer---" + request.getHeader("referer"));
  System.out.println("-----host---" + request.getHeader("host"));
  System.out.println("-----RequestURI---" + request.getRequestURI());
  System.out.println("-----RequestURL---" + request.getRequestURL());
  System.out.println("-----ServerName---" + request.getServerName());
  System.out.println("-----ServerPort---" + request.getServerPort());
  String realPath1 = "http://"+ request.getServerName()+ ":"+ request.getServerPort()+ request.getContextPath()+       request.getServletPath().substring(0,request.getServletPath().lastIndexOf("/") + 1);
  System.out.println("web  URL  路径:" + realPath1);



-----ServletPath---/payment/payment.do
-----ContextPath---
-----referer---http://127.0.0.1/payment/payment.do?uid=37bf12f198be26dd1bc6395af5732e0d&v=1&cardType=SZX&cardNumber=dgf&amount=1
-----host---127.0.0.1
-----RequestURI---/payment/payment.do
-----RequestURL---http://127.0.0.1/payment/payment.do
-----ServerName---127.0.0.1
-----ServerPort---80
web  URL  路径:http://127.0.0.1:80/payment/