request.js?b775:101 Uncaught (in promise) Error: Failed to convert value of type 'java.lang.Str

request.js?b775:101 Uncaught (in promise) Error: Failed to convert value of type 'java.lang.String' to required type 'java.lang.Long'; nested exception is java.lang.NumberFormatException: For input string: "undefined" at _default (request.js?b775:101:1)

数据库和实体类类型比对

 

 实体类id要写个@JsonFormat(shape = JsonFormat.Shape.STRING)

 

 时间写这个

 

 vue的时间显示格式：