C# 如何使用Web API将多个数据项插入SQL？

我有这样一个代码：

public IHttpActionResult Post(CUSTOMER [] newCustomer)
{
    try
    {
        foreach (CUSTOMER item in newCustomer)
        {
            var AddedCust = db.CUSTOMERs.Add(item);
        }

        int insertedRecords = db.SaveChanges();
        return Ok(insertedRecords);
    }
    catch (Exception)
    {
        return BadRequest(ModelState);
    }
}

对于Postman，我试图发布多条记录，但我遇到了一个例外：

{

    "NAME": "test1",
    "SURNAME": "Aleksandrova",
    "BIRTHPLACE": "Minsk",
    "GENDER": "F",
    "IDENTITYNO": "AA75 857445",
    "IDENTITYPINCODE": 2552,
    "BIRTHDATE": "1970-06-19T00:00:00"
}
{

    "NAME": "test2",
    "SURNAME": "Aleksat34t34ndrova",
    "BIRTHPLACE": "Minsk",
    "GENDER": "F",
    "IDENTITYNO": "AA75 857445",
    "IDENTITYPINCODE": 2552,
    "BIRTHDATE": "1970-06-19T00:00:00"
}
{

    "NAME": "test3",
    "SURNAME": "Aleksandrova",
    "BIRTHPLACE": "Minsk",
    "GENDER": "F",
    "IDENTITYNO": "AA75 857445",
    "IDENTITYPINCODE": 2552,
    "BIRTHDATE": "1970-06-19T00:00:00"
}

错误：

“无法将当前JSON对象（例如{“name\”：\“value\”}）反序列化为类型‘First\u API.Models.CUSTOMER[]”，因为该类型需要JSON数组（例如[1,2,3]）才能正确反序列化。\r\n若要修复此错误，请将JSON更改为JSON数组（例如[1,2,3]），或将反序列化类型更改为正常的.NET类型。”（例如，不是integer之类的基元类型，也不是数组或列表之类的集合类型），可以从JSON对象反序列化

---

如何解决此问题？

您的json正文无效，json数组应包含在

[]

（方括号）中，并且每条记录应以

，

（逗号）分隔

尝试使用以下json发送api请求

[{

    "NAME": "test1",
    "SURNAME": "Aleksandrova",
    "BIRTHPLACE": "Minsk",
    "GENDER": "F",
    "IDENTITYNO": "AA75 857445",
    "IDENTITYPINCODE": 2552,
    "BIRTHDATE": "1970-06-19T00:00:00"
},
{

    "NAME": "test2",
    "SURNAME": "Aleksat34t34ndrova",
    "BIRTHPLACE": "Minsk",
    "GENDER": "F",
    "IDENTITYNO": "AA75 857445",
    "IDENTITYPINCODE": 2552,
    "BIRTHDATE": "1970-06-19T00:00:00"
},
{

    "NAME": "test3",
    "SURNAME": "Aleksandrova",
    "BIRTHPLACE": "Minsk",
    "GENDER": "F",
    "IDENTITYNO": "AA75 857445",
    "IDENTITYPINCODE": 2552,
    "BIRTHDATE": "1970-06-19T00:00:00"
}]

试一试

---

为了完整起见，您可以添加一个解释，说明为什么您已经像以前一样格式化了JSON（请参见Prassad的回答）。“试试看。”"不是答案。@CodeCaster您总是可以做得更好请阅读。这个错误已经被问过了，并且已经回答了数百次。您试过什么了？@CodeCaster我找不到答案，这就是为什么我问我如何才能只返回添加的数据本身？我知道。例如，我通过写入一条记录来获取插入记录的数量e return ok（值），但这个值在循环中，我如何返回它？@AlishSafarli，您发布的错误是不言自明的，它在stackoverflow上解决过，这可能是您的问题得到-1的原因

[
    {
        "NAME": "test1",
        "SURNAME": "Aleksandrova",
        "BIRTHPLACE": "Minsk",
        "GENDER": "F",
        "IDENTITYNO": "AA75 857445",
        "IDENTITYPINCODE": 2552,
        "BIRTHDATE": "1970-06-19T00:00:00"
    },
    {
        "NAME": "test2",
        "SURNAME": "Aleksat34t34ndrova",
        "BIRTHPLACE": "Minsk",
        "GENDER": "F",
        "IDENTITYNO": "AA75 857445",
        "IDENTITYPINCODE": 2552,
        "BIRTHDATE": "1970-06-19T00:00:00"
    },
    {
        "NAME": "test3",
        "SURNAME": "Aleksandrova",
        "BIRTHPLACE": "Minsk",
        "GENDER": "F",
        "IDENTITYNO": "AA75 857445",
        "IDENTITYPINCODE": 2552,
        "BIRTHDATE": "1970-06-19T00:00:00"
    }
]