Method of getting current directory in jsp

This article describes the example of jsp to obtain the current directory of the implementation method, to share for your reference. The specific implementation method is as follows:

1. Use the System. getProperty () function to get the current path:

System.out.println(System.getProperty("user.dir"));//user.dir The current path is specified 

2. Use the function provided by File to get the current path:

File directory = new File("");// Set as current folder 

try{

System.out.println(directory.getCanonicalPath());// Get the standard path 

System.out.println(directory.getAbsolutePath());// Get Absolute Path 

}catch(Exceptin e){}

File. getCanonicalPath () and File. getAbsolutePath () differ only about the new File (".") and new File (".") paths.

# For the getCanonicalPath () function, "." denotes the current folder, and ".." denotes the next level of the current folder
# For the getAbsolutePath () function, return the current path plus the path you set when new File (), regardless of ".", ".."
# As for the getPath () function, all you get is the path you set when new File ()

For example, the current path is C: test:

File directory = new File("abc");

directory.getCanonicalPath(); // What I get is C:testabc

directory.getAbsolutePath(); // What I get is C:testabc

direcotry.getPath(); // What I get is abc

File directory = new File(".");

directory.getCanonicalPath(); // What I get is C:test

directory.getAbsolutePath(); // What I get is C:test.

direcotry.getPath(); // What I get is .

File directory = new File("..");

directory.getCanonicalPath(); // What I get is C:

directory.getAbsolutePath(); // What I get is C:test..

direcotry.getPath(); // What I get is ..

Get the current working directory of the JAVA program

File file = new File("t.tmp");

String fullpath = file.getAbsolutePath();

① request. getRealPath:

Method: request. getRealPath ("/")
The resulting path: C: Program FilesApache Software FoundationTomcat 5.5 webappsstrutsTest

Method: request. getRealPath (".")
The resulting path: C: Program FilesApache Software FoundationTomcat 5.5 webappsstrutsTest.

Method: request. getRealPath ("")
The resulting path: C: Program FilesApache Software FoundationTomcat 5.5 webappsstrutsTest

Method: request. getRealPath ("web. xml")
The resulting path: C: Program FilesApache ES90FoundationTomcat 5.5 webappsstrutsTestweb. xml

② request. getParameter ("");
ActionForm.getMyFile();
Methods: String filepath = request. getParameter ("myFile");
Resulted path: D: VSS Installation Directory users. txt

Methods: String filepath = ActionForm. getMyFile ();
Resulted path: D: VSS Installation Directory users. txt

I hope this article is helpful to everyone's jsp programming.