Question

我的数据json格式是：

[{"Email":"apatil.558@gmail.com","EmpCode":"10004","MobileNo":"","Name":"Sample Manager Eternus User","Pan":"MMMMM9876M","Photo":null,"message":{"Message":"Success"}}]

所以我写了这个类来反序列化为：

public class EmpDetails
{
    public string Email { get; set; }
    public string EmpCode { get; set; }
    public string MobileNo { get; set; }
    public string Name { get; set; }
    public string Pan { get; set; }
    public string Photo { get; set; }
    public string Message { get; set; }
}

我尝试使用此代码阅读它：

private void SihnIn_OnClick(object sender, RoutedEventArgs e)
{
     string uri = "http://xyz.d.in/service1.svc/getUser/MMMMM9876M/10004";
     WebClient webClient = new WebClient();
     webClient.DownloadStringCompleted += new DownloadStringCompletedEventHandler(DownloadStringCompleted);
     webClient.DownloadStringAsync(new Uri(uri));
}

 void DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
  {
     var jsonData = JsonConvert.DeserializeObject<EmpDetails>(e.Result); //Getting Error in this line
     string getEmail = jsonData.Email;
  }

然而JsonConvert.DeserializeObject<EmpDetails>(e.Result)引发了异常：

System.Windows.ni.dll中发生未处理的“System.Reflection.TargetInvocationException”类型异常

附加信息：调用目标引发了异常。

如何反序列化此JSON？

Answer 1

在JSON字符串中，字段＆＃34; message＆＃34;不是字符串，它是一个对象。您必须将EmpDetails的定义更改为以下内容才能使其正常工作：

public class EmpDetails
{
    public string Email { get; set; }
    public string EmpCode { get; set; }
    public string MobileNo { get; set; }
    public string Name { get; set; }
    public string Pan { get; set; }
    public object Photo { get; set; }
    public Message message { get; set; }
}

public class Message
{
    public string message { get; set; }
}

Answer 2

可能是你错了，应该是：

public class Message
{
    public string Message { get; set; }
}

public class EmpDetails//changed name
{
    public string Email { get; set; }
    public string EmpCode { get; set; }
    public string MobileNo { get; set; }
    public string Name { get; set; }
    public string Pan { get; set; }
    public string Photo { get; set; }//changed type
    public Message message { get; set; }
}

http://json2csharp.com/

反序列化JSON会抛出TargetInvocationException

2 个答案: