Java读取Src下面文件

src下面新建demo.properties

level=debug

    @Test
    public void test05() throws Exception{
        InputStream in = new BufferedInputStream(new FileInputStream("src/demo.properties")) ;
        Properties p = new Properties();
        p.load(in);
        String level =p.getProperty("level");
        System.out.println(level);
    }
    @Test
    public void test06() throws IOException{
        InputStream in=Properties.class.getResourceAsStream("/demo.properties");
        Properties p = new Properties();
        p.load(in);
        System.out.println(p.getProperty("level"));
    }
    @Test
    public void test07() throws IOException{
        InputStream in = FileTest.class.getClassLoader().getResourceAsStream("demo.properties");
        Properties p = new Properties();
        p.load(in);
        System.out.println(p.getProperty("level"));
    }
    @Test
    public void test08() throws IOException{
        InputStream in =ClassLoader.getSystemResourceAsStream("demo.properties");
        Properties p = new Properties() ;
        p.load(in) ;
        System.out.println(p.getProperty("level"));
    }

InputStream in = MyTest.class.getClassLoader().getResourceAsStream("a.txt");
BufferedReader br = new BufferedReader(new InputStreamReader(in));
String line = null;
while( (line = br.readLine()) != null ){
    System.out.println(line);
}
br.close();
in.close();

String filePath = MTest.class.getResource("/a.txt").getPath();
filePath = filePath.substring(1);
InputStream in = new FileInputStream(new File(filePath));
BufferedReader br = new BufferedReader(new InputStreamReader(in));
String str = null;
while( (str = br.readLine())!=null ){
    System.out.println(str);
}
in.close();
br.close();