报错信息：Failed to convert value of type ‘java.lang.String’ to required type ‘java.lang.Integer’; nested exception is java.lang.NumberFormatException: For input string: “listAllTag”
1. First report the error message on the console:
2. Analyze the cause of the error
2.1 View the interface from the front end
According to the error message, its information is probably that the front desk sent me a listAllTag of type string that cannot be converted into an Integer. After reading it for a long time, I couldn’t figure out why he would pass me a string of String because this interface is simply to get a The list collection is returned, and the front-end interface also reports 500.
2.2 View the back-end interface
Put the focus on the break point of the Controller layer and check it on the interface /tag/listAlltag, and found that it does not go through this interface at all.
#2.3 Find the reason
Since our front-end access is using the Get request, there is a /tag/{id} request in our back-end interface, and it is obtained through @PathVariable, so the back-end sends the {id} in the ListALlTag we need to request The parameter response is given to the request /tag/{id}, so we have the error message above.
3. Solution:
Change other fields such as /list/listAllTag in front of the listAllTag request to avoid the above situation.
Here I directly deleted the previous tag.
References: https://blog.csdn.net/qq_44627822/article/details/128562873?spm=1001.2101.3001.6661.1&utm_medium=distribute.pc_relevant_t0.none-task-blog-2%7Edefault%7ECTRLIST%7ERate-1-8385 -blog-106450905.pc_relevant_recovery_v2&depth_1-utm_source=distribute.pc_relevant_t0.none-task-blog-2%7Edefault%7ECTRLIST%7ERate-1-128562873-blog-106450905.pc_relevant_relevant_recovery_v1&utmind