How to obtain the project path in Java

The relative paths called in JSP and class files are different. In JSP, the root directory is webroot in the class file, the root directory is webroot/WEB-INF/classes of course you can also use system. getproperty (& quot; user. dir & quot;) to obtain the absolute path of your project.

1. Obtain the path in JSP:

Take the project name test as an example.

(1) obtain the full path of the current page containing the Project name:
 

1. Request. getrequesturi ()

Request. getrequesturi ()

Result:/test. jsp

(2) obtain the Project name:

1. Request. getcontextpath ()

Request. getcontextpath ()

Result:/test
(3) obtain the full name of the directory where the current page is located:
 

1. Request. getservletpath ()

Request. getservletpath ()

Result: If the page is in the/test/JSP/test. jsp directory

(4) obtain the full path of the server where the page is located:

1. Application. getrealpath ("test. jsp ")

Application. getrealpath ("test. jsp ")

Result: D: \ resin \ webapps \ test. jsp

(5) obtain the absolute path of the server where the page is located:

1. Abspath =NewJava. Io. File (application. getrealpath (request. getrequesturi (). getparent ();

Abspath = new java. Io. File (application. getrealpath (request. getrequesturi (). getparent ();

Result: D: \ resin \ webapps \ test

2. Obtain the path in the class:
(1) absolute path of the class:

1. Class.Class. Getclass (). getresource ("/"). getpath ()

Class. Class. getclass (). getresource ("/"). getpath ()

(2) obtain the project path:
 

1. System. getproperty ("user. dir ")

System. getproperty ("user. dir ")

Result: D: \ test
3. Get the path in servlet:
(1) obtain the project directory:

1. Request. getsession (). getservletcontext (). getrealpath ("") // you can specify the package name.

Request. getsession (). getservletcontext (). getrealpath ("") // you can specify the package name.

Result: e: \ Tomcat \ webapps \ test

(2) obtain the address in the IE address bar:

1. Request. getrequesturl ()

Request. getrequesturl ()

Result: http: // localhost: 8080/test

(3) obtain the relative address:

1. Request. getrequesturi ()

Request. getrequesturi ()

Result:/test