JAVA获取运行程序的src路径

JavaPrj使用: System.getProperty("user.dir")+"\\src"或直接"\\src"
JavaWeb使用Thread.currentThread().getContextClassLoader().getResource("/").getPath()

获取src目录	JavaWeb	JavaProj
System.getProperty("user.dir")	D:\tools\MyEclipse2015	D:\tools\Workspaces\TestJava
Thread.currentThread() .getContextClassLoader() .getResource("/") .getPath()	/D:/tools/Workspaces /.metadata/.me_tcat7 /webapps/AhExam4SSM /WEB-INF/classes/	java.lang.NullPointerException

2018-04-29补充：JavaWeb项目中：

String path = this.getServletContext().getRealPath("/WEB-INF/classes");
System.out.println("path = " + path);

String path2 = Thread.currentThread().getContextClassLoader().getResource("/").getPath();
System.out.println("path2 = " + path2);

运行结果：（path2中空格变成%）

path = C:\Users\AndyMi\Workspaces\MyEclipse 2015\.metadata\.me_tcat7\webapps\TestJavaWeb\WEB-INF\classes
path2 = /C:/Users/AndyMi/Workspaces/MyEclipse%202015/.metadata/.me_tcat7/webapps/TestJavaWeb/WEB-INF/classes/