java - 如何在 Spring boot 中将带有前导零的整数绑定(bind)到请求负载中的整数字段？

Question

我有如下所示的有效负载。

{
    "name": "XXXX",
    "expMonth": 07,
    "expYear": 21
}

我的请求正文 POJO 如下所示。

public Class Card {
     private String name;
     private Integer expMonth;
     private Integer expYear;
}

但是，expMonth 未正确绑定(bind)并引发异常。请提出前进的方向。

异常堆栈:

org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Invalid numeric value: Leading zeroes not allowed; nested exception is com.fasterxml.jackson.core.JsonParseException: Invalid numeric value: Leading zeroes not allowed at [Source: (PushbackInputStream); line: 4, column: 16]

Answer 1

However, expMonth is not binding properly and throws an exception.

根据异常堆栈，您有前导零，因此 Jackson 抛出了异常。您可以尝试类似的方法，

{
    "name": "XXXX",
    "expMonth": 7,    <--- Removing the leading zero(s).
    "expYear": 21
}

另一种方法是将其更改为 String，

{
    "name": "XXXX",
    "expMonth": "07",
    "expYear": 21
}

代码:

public Class Card {
     private String name;
     private String expMonth;
     private Integer expYear;
}

然后你可以做类似的事情，

Integer.parseInt(expMonth);