com.fasterxml.jackson.databind.exc.MismatchedInputException

Posted 2020-11-14 tarena

jackson 2.2.2

由于vo中缺少json的某个字段属性引起

3种解决方法

1、 vo中添加注解 @JsonIgnoreProperties(ignoreUnknown = true)，在实体类上加上注解

2、  mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);

3、 添加如下即可：mapper.configure(DeserializationFeature.ACCEPT_EMPTY_ARRAY_AS_NULL_OBJECT, true);，把空的数组“[]”转为空

 

com.fasterxml.jackson.databind.exc.MismatchedInputException

错误的格式

[{
    "firstName": "hgf",
    "lastName": "frew",
    "username": "erf",
    "email": "bgghjk",
    "password": "bgte",
    "role": "trrere"
  }
]

　　

正确的格式，不要[]

{
    "firstName": "hgf",
    "lastName": "frew",
    "username": "erf",
    "email": "bgghjk",
    "password": "bgte",
    "role": "trrere"
}