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

本文转载自  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里面定义的 usedType字段类型 和你前端传过来的数据类型格式不对

比如usedType字段在java里面是String类型的，而我从前端传值过来的却是一个数组['1','2']，不能反序列实例化，所以报错了

我只需要在前端把数组xxx.join(',')分割成字符串就行了

 


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