Java获取工程路径的几种方法

第一种:

1 File f = new File(this.getClass().getResource("/").getPath()); 
2 System.out.println(f); 

结果:

C:Documents%20and%20SettingsAdministratorworkspaceprojectNamein 

 获取当前类的所在工程路径;

如果不加“/”:

1 File f = new File(this.getClass().getResource("").getPath()); 
2 System.out.println(f); 

结果:

C:Documents%20and%20SettingsAdministratorworkspaceprojectNameincom	est 
获取当前类的绝对路径; 

第二种

1 File directory = new File("");//参数为空 
2 String courseFile = directory.getCanonicalPath() ; 
3 System.out.println(courseFile); 

结果:

C:Documents and SettingsAdministratorworkspaceprojectName 
获取当前类的所在工程路径;

第三种

1 URL xmlpath = this.getClass().getClassLoader().getResource("selected.txt"); 
2 System.out.println(xmlpath); 

结果:

file:/C:/Documents%20and%20Settings/Administrator/workspace/projectName/bin/selected.txt 
获取当前工程src目录下selected.txt文件的路径

第四种

1 System.out.println(System.getProperty("user.dir")); 

结果:

C:Documents and SettingsAdministratorworkspaceprojectName 
获取当前工程路径

第五种

1 System.out.println( System.getProperty("java.class.path")); 

结果:

C:Documents and SettingsAdministratorworkspaceprojectNamein 
获取当前工程路径

 

原文地址:https://www.cnblogs.com/nemowang1996/p/12585310.html