如何避免将null实体对象传递给web api方法

Posted 2021-04-08

我有以下web api方法如下

public bool UpdateValidations([FromBody] ValidationKeyEntity validationKey)
{
    if (ModelState.IsValid)
    { 
        //my code here
    }
}

public class ValidationKeyEntity
{
    public int ValidationKeyId { get; set; }

    [MaxLength(Constants.maxStringLength)]
    public string Name { get; set; }

    public int DisplayId { get; set; }

    [MaxLength(Constants.maxStringLength)]
    public string CreatedBy { get; set; }
}

我正在使用Postman进行测试。我传递的不同json比ValidationKeyEntity对象为{“Vishal”：“vishal”}作为参数。但我的ModelState.IsValid仍然返回true。

如何避免接受除“ValidationKeyEntity”对象之外的其他json对象？

答案

1. 使用RequiredAttribute将属性标记为required： public class ValidationKeyEntity { [Required] public int ValidationKeyId { get; set; } [Required] public string Name { get; set; } [Required] public int DisplayId { get; set; } [Required] public string CreatedBy { get; set; } }
2. 全球设置MissingMemberHandling以处理废物属性： var httpConfiguration = new HttpConfiguration(); httpConfiguration .Formatters .JsonFormatter .SerializerSettings .MissingMemberHandling = MissingMemberHandling.Error;