This error, literally, means that the value we want to put exceeds the length, so this error is reported. I encountered this error several times and encountered it online. At the beginning, I was always puzzled, because I haven't checked it to be longer than the length I set. Here, I default that the length must be too large. In fact, it may be too small. For example, I have encountered these times. It is because the database is set to bigint, but the actual business is in circulation, which causes the value assigned to become a negative number, that is, a negative number is assigned to a field of type bigint, so this error is reported.
planDetail.setDoingQuantity(planDetail.getDoingQuantity() - detail.getQuantity());
