Data in the database query normal


There is no data in the database query error 500

CodePudding user response:

See you parse uploading. HTML 500 is a server error

CodePudding user response:

Use an ajax request? Breaking point with the incoming parameters? Whether you need the query SQL parameter? What is SQL query receiving entity?

CodePudding user response:

No query to the data returned is null when you need to use to the returned data is null will be submitted to the 500 break points to look at make a judgment should be a null pointer or assign an initial value

CodePudding user response:

Check your res. The data of this, your data is returns null when using complains, and count the also want to make a judgment to check or assign an initial value

CodePudding user response:

Should be the query result is null, not make processing of data