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java報錯：com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize out of START_ARRAY token

本文轉載自   查看原文   2021-02-03 17:44   370    java/ JS

Caused by: com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of java.lang.Integer out of START_ARRAY token
at [Source: (PushbackInputStream); line: 1, column: 7618] (through reference chain: com.kintech.model.domain.crm.CrmCompany["billformats"]->java.util.HashSet[0]->com.kintech.model.domain.crm.CrmCompanybillformat["usedType"])

 

原因：

java里面定義的 usedType字段類型 和你前端傳過來的數據類型格式不對

比如usedType字段在java里面是String類型的，而我從前端傳值過來的卻是一個數組['1','2']，不能反序列實例化，所以報錯了

我只需要在前端把數組xxx.join(',')分割成字符串就行了

 


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