java 获取properties配置文件例子

1. import java.io.FileInputStream;  
2. import java.io.FileNotFoundException;  
3. import java.io.IOException;  
4. import java.util.Properties;  
5.   
6.   
7.   
8. public class Test {  
9.   
10.     public static void main(String[] arg){  
11.         Properties pro=getProperties();  
12.             String serverUrl= pro.getProperty("serverUrl");  
13.             System.out.println(serverUrl);  
14.     }  
15.     //获取属性文件  
16.     private static Properties getProperties(){  
17.         String tomcatPath = Test.class.getClassLoader().getResource("").toString();  
18.         System.out.println(tomcatPath);  
19.         if(tomcatPath!=null&&tomcatPath.length()>0){  
20.             int s = tomcatPath.lastIndexOf("classes");  
21.             tomcatPath = tomcatPath.substring(0,s );  
22.             int pos=tomcatPath.indexOf("file:");      
23.             if(pos>-1) tomcatPath=tomcatPath.substring(pos+5);      
24.         }  
25.         String sourceFileName=tomcatPath+"config/systemConfig.properties";//获取配置文件的地址  
26.         try{      
27.             sourceFileName=java.net.URLDecoder.decode(sourceFileName,"utf-8");      
28.             }catch(Exception e){throw new RuntimeException(e);}   
29.         FileInputStream in;  
30.         Properties prop = new Properties();  
31.         try {  
32.             in = new FileInputStream(sourceFileName);  
33.             prop.load(in);  
34.         } catch (FileNotFoundException e) {  
35.             e.printStackTrace();  
36.         }catch (IOException e) {  
37.             e.printStackTrace();  
38.         }  
39.         return prop;  
40.     }  
41. }