jsp页面自动生成的basePath脚本,端口号后面为什么少一个"/"?

Question

<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

request.getServerPort()后面为什么不加"/"？ myeclipse自动生成的jsp界面都不加，网上的好像也都不加。

Answer 1

打印下path 就知道了

Answer 2

可以看下源码方法的说明文档。request.getContextPath()获取的是项目的上下文路径，是一个相对路径。是"/"开头的

• Returns the portion of the request URI that indicates the context

  • of the request. The context path always comes first in a request

  • URI. The path starts with a "/" character but does not end with a "/"

  • character. For servlets in the default (root) context, this method

  • returns "". The container does not decode this string.