java获取项目绝对路径

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01public static void main(String[] args) {

02    //获取是项目的绝对路径

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

04    System.out.println(new File("").getAbsolutePath());

05    //获取到clsspath绝对路径

06    System.out.println(ServerDemo.class.getResource("/"));

07    System.out.println(Thread.currentThread().getContextClassLoader().getResource(""));

08    System.out.println(ServerDemo.class.getClassLoader().getResource(""));

09 

10}