java 路径

System.out.println(LegalTransactionHistoryTransferTest.class.getClassLoader().getResource(""));
        System.out.println(ClassLoader.getSystemResource(""));
        System.out.println(LegalTransactionHistoryTransferTest.class.getResource(""));
        System.out.println(LegalTransactionHistoryTransferTest.class.getResource("/"));
        System.out.println(new File("").getAbsolutePath());
        System.out.println(System.getProperty("user.dir"));