java中json对象有没有方法可以把null值转换成空字符串？

Answer 1

There is the same problem below segmentfault, so you can close this problem. In addition, I will post the link address of this problem. If you have the same problem, you can take a look.
https://segmentfault.com/q/1010000004216492

Answer 2

See this article, which solved my problem very well:
http://www.cnblogs.com/linjzo...