【Java】+ Unexpected token X in JSON at position X

First, given the problem:

Error: Unexpected token P in JSON at position 31

 

Second, the analysis of the problem:

In JSON 31 P at the position is abnormal

"P" position in the search parameters, one by one, check to see whether it is correct JSON format

 

Third, the solution:

As shown above, in the three places of the above objects can be quotes