java將\替換成/

    public static void main(String[] args) {
        String str="upload\\media\\201904\\i4Qjz8E40xGQovUq-2CMi-HrBaUrGFZhv9konAyx0Yg.jpg";
        String result=str.replaceAll("\\\\", "/");
        System.out.println(result);
    }