【20004】Java常用方法

• 格式化JSON

public static void main(String[] args) {
    String text = "{\"hello\":{\"test\":\"val\"}}";
    String pretty = JSON.toJSONString(JSON.parseObject(text), SerializerFeature.PrettyFormat, SerializerFeature.WriteMapNullValue,
            SerializerFeature.WriteDateUseDateFormat);
    System.out.println(pretty);
}

{
    "hello":{
        "test":"val"
    }
}