Java gets the method of the value in the properties file __properties read

First, the normal way to get the profile value

Import Java.io.BufferedInputStream;
Import Java.io.FileInputStream;
Import java.io.IOException;
Import Java.io.InputStream;
Import java.util.Enumeration;
Import java.util.Properties;
Import Java.util.PropertyResourceBundle;

Import Java.util.ResourceBundle; public class Test {//1. Using the Load () method of the Java.util.Properties class//Example: public static string Getproperties_1 (string url) throws IOException {INP

		Utstream in = new Bufferedinputstream (new FileInputStream (URL));

		Properties P = new properties ();

		P.load (in);

	Return P.getproperty ("Jdbc.type"); }//2. Using the Getbundle () method of the Java.util.ResourceBundle class//example: public static void getproperties_2 (String URL) {ResourceBundle RB
		= Resourcebundle.getbundle (URL);
		enumeration<string> keys = Rb.getkeys ();
		while (Keys.hasmoreelements ()) {System.out.println (rb.getstring (Keys.nextelement ())); }//3. Constructor//Example using the Java.util.PropertyResourceBundle class: public static void Getproperties_3 (String url) throws Ioexception {InputStream in = new Bufferedinputstream (new FileInputStream (URL));
		ResourceBundle RB = new propertyResourceBundle (in);

		enumeration<string> keys = Rb.getkeys ();
		while (Keys.hasmoreelements ()) {System.out.println (rb.getstring (Keys.nextelement ())); }//4. getResourceAsStream () method with class variable//Example: public static string Getproperties_4 (string url) throws IOException {Inpu

		Tstream in = Test.class.getResourceAsStream (URL);

		Properties P = new properties ();
		
		P.load (in);

	Return P.getproperty ("Jdbc.url"); }//5. The getResourceAsStream () method//example of the Java.lang.ClassLoader obtained using Class.getclassloader (): public static String Getproperties_

		5 (String URL) throws IOException {InputStream in = Test.class.getClassLoader (). getResourceAsStream (URL);

		Properties P = new properties ();

		P.load (in);

	Return P.getproperty ("Jdbc.url"); }//6. Using the Getsystemresourceasstream () static method//Example of the Java.lang.ClassLoader class: public static String Getproperties_6 (STring URL) throws IOException {InputStream in = Classloader.getsystemresourceasstream (URL);

		Properties P = new properties ();

		P.load (in);

	Return P.getproperty ("Jdbc.url"); The Javax.servlet.ServletContext getResourceAsStream () method///Example://public static propertie can be used in the//supplement//Servlet

	s getproperties_8 (String URL) {//InputStream in = Context.getresourceasstream (URL);

	Properties P = new properties ();

	P.load (in); public static void Main (string[] args) throws IOException {//need to place files under the project root directory System.out.println (getproperties_
		1 ("settings.properties"));
		System.out.println ("----------");
		The file needs to be placed below the class file sibling directory getproperties_2 ("Settings");
		System.out.println ("----------");
		Getproperties_3 ("Settings.properties");
		System.out.println ("----------");
		System.out.println (Getproperties_4 ("settings.properties"));
		System.out.println ("----------");
		System.out.println (Getproperties_5 ("settings.properties")); System.out.println ("----------");
	System.out.println (Getproperties_6 ("settings.properties")); }

}

Second, Spring's Way of @Value annotations

The configuration required for the Spring XML file

	<!--Load Application attribute instances can be  referenced by @Value ("#{app_prop[' Jdbc.driver ']}") String jdbcdriver-->
    <util:properties Id= "App_prop" location= "Classpath:settings.properties" local-override= "true"/>
	

Java code:

Package cn.yufu.system.modules.oa.merchant.web;

Import Cn.yufu.system.common.web.BaseController;
Import Cn.yufu.system.modules.oa.merchant.service.ActBusApprovalService;

@Controller
@RequestMapping (value = "${adminpath}/merchant/actbusapproval") Public
class Actbusapprovalcontroller extends Basecontroller {

	@Autowired
	private Actbusapprovalservice Actbusapprovalservice;
	App_prop  is the same as the ID of the configuration file
	@Value ("#{app_prop[' Fileuploadpath ']}")
	private String Uploadfilepath;