When I was working on a company project today, I came across this error message: com.alibaba.fastjson.jsonexception: syntax error, POS 1, JSON

later, I located the key code line where the error was reported. The

location object is not empty, and data.getstring (key) is also valuable, but the value is null after two consecutive gets in the sheet, I can’t understand it.

Finally, it is found that this cell does not exist, so it is null after getting the row and column. After null, it continues to set and reports a null pointer error