package my; |
02 |
03 | import java.io.File; |
04 | import java.io.IOException; |
05 | import java.net.URL; |
06 |
07 | public class MyUrlDemo { |
08 |
09 | |
10 | public static void main(String[] args) { |
11 | MyUrlDemo muDemo = new MyUrlDemo(); |
12 | try { |
13 | muDemo.showURL(); |
14 | } catch (IOException e) { |
15 | // TODO Auto-generated catch block |
16 | e.printStackTrace(); |
17 | } |
18 | } |
19 | |
20 | public void showURL() throws IOException { |
21 | |
22 | // 第一种:获取类加载的根路径 D:\git\daotie\daotie\target\classes |
23 | File f = new File( this .getClass().getResource( "/" ).getPath()); |
24 | System.out.println(f); |
25 |
26 | // 获取当前类的所在工程路径; 如果不加“/” 获取当前类的加载目录 D:\git\daotie\daotie\target\classes\my |
27 | File f2 = new File( this .getClass().getResource( "" ).getPath()); |
28 | System.out.println(f2); |
29 |
30 | // 第二种:获取项目路径 D:\git\daotie\daotie |
31 | File directory = new File( "" ); // 参数为空 |
32 | String courseFile = directory.getCanonicalPath(); |
33 | System.out.println(courseFile); |
34 | |
35 |
36 | // 第三种: file:/D:/git/daotie/daotie/target/classes/ |
37 | URL xmlpath = this .getClass().getClassLoader().getResource( "" ); |
38 | System.out.println(xmlpath); |
39 | |
40 |
41 | // 第四种: D:\git\daotie\daotie |
42 | System.out.println(System.getProperty( "user.dir" )); |
43 | /* |
44 | * 结果: C:\Documents and Settings\Administrator\workspace\projectName |
45 | * 获取当前工程路径 |
46 | */ |
47 |
48 | // 第五种: 获取所有的类路径 包括jar包的路径 |
49 | System.out.println(System.getProperty( "java.class.path" )); |
50 | |
51 | } |
52 | } |