json无法从String反序列化byte类型的值 [英] json Can not deserialize value of type byte from String

问题描述

在Spring java应用程序中，我接收到带有以下输入的REST json请求，其中'mode'字段在java类中被定义为byte。

In Spring java application, I am receiving REST json request with following input where 'mode' field is defined as byte in the java class.

{
  "application": "sadsd",
  "date": "20161109",
  "mode": "A",
  "catalogId": 0,
}

pojo -

public class Test {
  String application;
  String date;
  byte mode;
  int catalogId;
...
}

获取以下错误 -

"exception": org.springframework.http.converter.HttpMessageNotReadableException",
  "message": "Could not read document: Can not deserialize value of type byte from String \"A\":
not a valid Byte value\n at 
[Source: java.io.PushbackInputStream@6386b197; line: xx, column: xx] 
(through reference chain: com.abc.myInput[\"mode\"]); 

`enter code here`nested exception is com.fasterxml.jackson.databind.exc.InvalidFormatException:
Can not deserialize value of type byte from String \"A\":

not a valid Byte value\n at [Source: java.io.PushbackInputStream@6386b197; line: xx, column: xx] 
(through reference chain: com.abc.myInput[\"mode\"])",`

我是否必须在这里编写序列化器和反序列化器？

是否有任何可用于字段字段或该字段的get / set方法的注释没有写任何额外的代码？

Do i have to write serializer and deserializer here?
Are there any annotations that i can use on byte field or get/set methods of that field without writing any additional code?

推荐答案

我只是将它们声明为String并从输入字符串中获取第一个字节并转换字节为输出字符串。
感谢输入cricket_007和jnbbender。

i just went ahead with declaring them as String and taking first byte from input string and converting byte to string for the output.
Thanks for the input cricket_007 and jnbbender.

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