JSP how to obtain the path information in the request object?

From:

http://www.java265.com/JavaCourse/202112/2060.html

The following author describes the method of obtaining the absolute path, virtual path and other information in the request object using the example method, as shown below:

Implementation ideas:Example 1: Project name "maomao"getContextPath(): Get the project nameResult: /maomaogetServletPath() Get the full name of the directory where the current page is located/maomao/jsp/test.jspgetRequestURL() gets the IE address bar addressResult: http://localhost:8080/maomao/testgetServletPath() gets the relative addressResult: /maomao/testExample 2: jsp request address: http://127.0.0.1:8080/projectName/test/testSearch.jsp, various paths are obtained as follows:request.getServletPath():/test/testSearch.jsprequest.getContextPath():/projectNamerequest.getRequestURL(): http://127.0.0.1:8080/projectName/test/testSearch.jsprequest.getRemoteAddr():127.0.0.1request.getServletContext():[email protected].getServerPort():8080request.getScheme():httprequest.getServerName():127.0.0.1request.getProtocol(): HTTP/1.1request.getPathInfo():nullrequest.getQueryString():null