无法在Unity中使用UnityWebRequest对数据进行POST，它给出错误:HTTP/1.1 500内部服务器错

Question

我无法在Unity中使用UnityWebRequest以Json格式POST数据。它给出错误

错误：HTTP/1.1 500内部服务器错误

我使用的是ASP.NET Core中制作的Web服务，该服务在IIS Express上本地托管。

这是我在Unity中的C#代码

public class AddUsers : MonoBehaviour
{
IEnumerator addOrUpdateUser()
{
User user = new User()
{
Id = "0001",
Name = "John",
}
UnityWebRequest req = UnityWebRequest.Post("http://localhost:58755/User/AddNewUser", JsonConvert.SerializeObject(user));
req.SetRequestHeader("Content-Type", "application/json");
req.certificateHandler = new BypassCertificate();
yield return req.SendWebRequest();

if (req.isNetworkError || req.isHttpError || req.isError)
print("Error: " + req.error);
print(req.downloadHandler.text);
}
}
[Serializable]
public class UserDetails
{
public string Id { get; set; }
public string Name { get; set; }
}

这是我使用实体框架核心的ASP.NET核心代码

[HttpPost]
string AddNewUser([FromBody]User user)
{
Context.LogoQuizUsers.Add(user); // I am getting System.NullReferenceException here
Context.SaveChanges();
return "Inserted Id: " + user.Id;
}

Answer 1

将数据作为原始主体发布，就像使用Postman或任何类似接口发送一样。将请求的UploadHandler设置为UploadHandlerRaw。添加和更改您的报表

UnityWebRequest req = UnityWebRequest.Post("http://localhost:58755/User/AddNewUser", "POST");
req.uploadHandler = new UploadHandlerRaw(Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(user))) as UploadHandler;

因此，最终代码将是

IEnumerator addOrUpdateUser()
{
//...
UnityWebRequest req = UnityWebRequest.Post("http://localhost:58755/User/AddNewUser", "POST");
req.SetRequestHeader("Content-Type", "application/json");
req.uploadHandler = new UploadHandlerRaw(Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(user))) as UploadHandler;
req.certificateHandler = new BypassCertificate();
yield return req.SendWebRequest();
if (req.isNetworkError || req.isHttpError || req.isError)
print("Error: " + req.error);
print(req.downloadHandler.text);
//...
}

其余代码正确。

Answer 2

看看这个主题

Unity编辑器内部：转到窗口->程序包管理器。在新窗口的顶栏中；包装：XXXXXX"；下拉并选择"；Unity Registry"；。搜索"；WebGl发布者"；并安装/导入。

IIIFFF包裹未出现：在相同的软件包管理器窗口中+"按钮->从git添加。添加以下内容：com.unity.connect.share

这将自动添加WebGL发布服务器。

它帮助我解决了问题