Java obtains the current path and absolute path code

There are many function files in java that obtain the current path and the absolute path. I will introduce you to the usage of related functions in detail. If you need them, refer to them.

Current path

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

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System. out. println (System. getProperty ("user. dir"); // user. dir specifies the current path.

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

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File directory = new File (""); // set it to the current folder Try { System. out. println (directory. getCanonicalPath (); // obtain the standard path. System. out. println (directory. getAbsolutePath (); // obtain the absolute path. } Catch (shorttin e ){}

Absolute path

The following methods are generally used to obtain absolute paths in JAVA:

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Request. getRealPath () // This method has expired and is not recommended. This. getServletContext (). getRealPath () // used in SERVLET This. getServlet (). getServletContext (). getRealPath () // used in Struts Request. getSession (). getServletContext (). getRealPath ()

The obtained is the absolute URI path of the current classpath.

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Test. class. getResource ("/")

Obtain the true file path

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String file_real_path = ServletContext. getRealPath ("mypath/filename ");? Request. getRealPath ("/") is not recommended ("/");