Shulou(Shulou.com)06/01 Report--

Bug that appears

As shown in the picture, I began to copy delete statements and parameters to the database for execution, deleting two pieces of data, but the background execution did delete only one piece of data, which showed that I was confused at that time.

Analyze the reasons

Analyze the reasons

As shown in the picture, the value of the correct parameter should be like this. Smart students should know what is wrong.

Solve the problem

Solve the problem

I will not post the initial code, but directly post the code that solves the bug.

Code in mybatis

# {arr}

Code in controller

/ * deletion and batch deletion * / @ RequestMapping (value = "/ del", method = RequestMethod.POST, produces = {MediaType.APPLICATION_JSON_VALUE}) public ResponseEntity delete (@ RequestParam String customerId) throws Exception {/ / get the batch deleted id, removing the last "," customerId=customerId.substring (0meme customerId.length ()-1); String [] strarr=customerId.split (","); int [] arr=new int [strarr.length] For (int iTuno Bandi)

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