Javaweb Project Gets the configuration file under the WebContent web-inf __web

1 Get the configuration file under the WebContent path

<span style= "FONT-SIZE:18PX;" >string Path = ParseReader.class.getResource ("/"). GetPath ();
String Websiteurl = Path.replace ("/build/classes", ""). Replace ("%20", "")
					+ "webcontent/web-inf/";
System.out.println (Websiteurl);</span>

The result printed is/d:/workspace/com.phy.smart.pipe.monitor/webcontent/web-inf/

/d:/workspace/com.phy.smart.pipe.monitor is my current project local address

The above idea is based on the load of Parsereader class to obtain the address of the current project, where/build/classes is a Web project compiled after Tomcat deployment. class file path, to be replaced by empty,%20 as a space,%20 is actually a space, After serialization, it becomes%20.%20 is actually a space, and after serialization it becomes%20.

Then you can arbitrarily get the file path under your webcontent. 2. Get the configuration file under the SRC path

public class Propertiesreader {public
	static String USERNAME = "Nancht";
	public static String PASSWD = "vprjg8#h==";
	private static properties props = new properties ();

	static {
		try {
			InputStream in = new Classpathresource ("/ws.properties")
					. getInputStream ();
			Props.load (in);

		} catch (FileNotFoundException e) {
			e.printstacktrace ();
		} catch (IOException e) {
			e.printstacktrace ();
		}
	}
}

3. The following summary of three methods reads:

Use ServletContext to read resource files in different locations of the Web project public class ServletDemo11 extends HttpServlet {public void doget (httpservletrequest
	Request, HttpServletResponse response) throws Servletexception, IOException {test5 (); //Read the configuration file under src private void Test5 () throws IOException {InputStream in = This.getservletcontext (). getresourceasst
		Ream ("/web-inf/classes/db.properties");  Properties prop = new properties ();
		
		
		Map Prop.load (in);
		String url = prop.getproperty ("url");
		String username = prop.getproperty ("username");
		
		String Password = prop.getproperty ("password");
		System.out.println (URL);
		SYSTEM.OUT.PRINTLN (username);
	SYSTEM.OUT.PRINTLN (password); //Read the configuration file below src (traditional way undesirable) private void test4 () throws IOException {FileInputStream in = new FileInputStream ("Classe
		S/db.properties ");
	System.out.println (in);
		///Read configuration file The Third way private void Test3 () throws IOException {ServletContext context = This.getservletcontext (); URL url = context.getresource ("/Resource/db.properties ");
		
	InputStream in = Url.openstream ();
		//The second way to read the configuration file private void Test2 () throws IOException {ServletContext context = This.getservletcontext ();  String Realpath = Context.getrealpath ("/db.properties"); C:\\sdsfd\sdf\db.properties//Get to Operation filename realpath=abc.properties String filename = realpath.substring (realpath.la
		Stindexof ("\") +1);
		
		
		System.out.println ("The file currently read is:" + filename);
		FileInputStream in = new FileInputStream (Realpath);
		Properties prop = new properties ();
		
		Prop.load (in);
		String url = prop.getproperty ("url");
		String username = prop.getproperty ("username");
		
		String Password = prop.getproperty ("password");
		SYSTEM.OUT.PRINTLN ("The document contains the following data:");
		System.out.println (URL);
		SYSTEM.OUT.PRINTLN (username);
		
	SYSTEM.OUT.PRINTLN (password);
		///Read configuration file The first way private void Test1 () throws IOException {ServletContext context = This.getservletcontext (); InputStream in = Context.getresourceasstream ("/db.propErties ");  Properties prop = new properties ();
		
		
		Map Prop.load (in);
		String url = prop.getproperty ("url");
		String username = prop.getproperty ("username");
		
		String Password = prop.getproperty ("password");
		System.out.println (URL);
		SYSTEM.OUT.PRINTLN (username);
	SYSTEM.OUT.PRINTLN (password); 
		public void DoPost (HttpServletRequest request, httpservletresponse response) throws Servletexception, IOException {
	Doget (request, response);
 }

}