无法反序列化XML

Question

我将尝试对以下XML进行反序列化：

我正在尝试对以下XML进行反序列化：

<?xml version="1.0" encoding="UTF-8"?>
<jobInfo
xmlns="http://www.force.com/2009/06/asyncapi/dataload">
<id>750x0000000005LAAQ</id>
<operation>insert</operation>
<object>Contact</object>
<createdById>005x0000000wPWdAAM</createdById>
<createdDate>2009-09-01T16:42:46.000Z</createdDate>
<systemModstamp>2009-09-01T16:42:46.000Z</systemModstamp>
<state>Open</state>
<concurrencyMode>Parallel</concurrencyMode>
<contentType>CSV</contentType>
<numberBatchesQueued>0</numberBatchesQueued>
<numberBatchesInProgress>0</numberBatchesInProgress>
<numberBatchesCompleted>0</numberBatchesCompleted>
<numberBatchesFailed>0</numberBatchesFailed>
<numberBatchesTotal>0</numberBatchesTotal>
<numberRecordsProcessed>0</numberRecordsProcessed>
<numberRetries>0</numberRetries>
<apiVersion>28.0</apiVersion>
</jobInfo>

我创建了这个对象：

public class JobInfo
{
    public string xmlns { get; set; }
    public string id { get; set; }
    public string operation { get; set; }
    public string @object { get; set; }
    public string createdById { get; set; }
    public string createdDate { get; set; }
    public string systemModstamp { get; set; }
    public string state { get; set; }
    public string concurrencyMode { get; set; }
    public string contentType { get; set; }
    public string numberBatchesQueued { get; set; }
    public string numberBatchesInProgress { get; set; }
    public string numberBatchesCompleted { get; set; }
    public string numberBatchesFailed { get; set; }
    public string numberBatchesTotal { get; set; }
    public string numberRecordsProcessed { get; set; }
    public string numberRetries { get; set; }
    public string apiVersion { get; set; }
}

public class RootObject
{
    public JobInfo jobInfo { get; set; }
}

我正在使用以下代码:

XmlSerializer serializer = new XmlSerializer(typeof(RootObject));
StringReader rdr = new StringReader(response);
RootObject resultingMessage = (RootObject)serializer.Deserialize(rdr);

然而，我收到了以下错误：

There is an error in XML document (1, 40).

{"<jobInfo xmlns='http://www.force.com/2009/06/asyncapi/dataload'> was not expected."}

如何处理xmlns属性？我的代码将其作为属性（因此失败）...

- user1477388

Answer 1

目前您的代码期望xmlns作为元素，而不是属性。

您应该向您的类添加XmlSerialization属性，像这样：

[XmlRoot("jobInfo", Namespace="http://www.force.com/2009/06/asyncapi/dataload"]
public class JobInfo
{
    [XmlAttribute]
    public string xmlns { get; set; }
    [XmlElement(ElementName = "id")]
    public string id { get; set; }
    ....
}

您可以在MSDN文章中找到更多信息：

• 使用属性控制XML序列化
• XML序列化示例

- VMAtm

---

FYI，在我的测试中，这个代码可以正常工作，除了“xmlns”属性仍未填充。不确定这是限制还是属性配置错误。 - Chris Sinclair

将命名空间名称移动到常量中，并从那里填充 - 这将在 XML 模式更改之前不会更改。 - VMAtm

Answer 2

尝试使用 XmlRootAttribute 来指定 Namespace。

[XmlRoot("jobInfo", Namespace = "http://www.force.com/2009/06/asyncapi/dataload")]
public class JobInfo
{
    [XmlElement("id")]
    public string Id { get; set; }

    [XmlElement("operation")]
    public string Operation { get; set; }

    [XmlElement("object")]
    public string Object { get; set; }

    [XmlElement("createdById")]
    public string CreatedById { get; set; }

    [XmlElement("createdDate")]
    public DateTime CreatedDate { get; set; }

    [XmlElement("systemModstamp")]
    public DateTime SystemModstamp { get; set; }

    [XmlElement("state")]
    public string State { get; set; }

    [XmlElement("concurrencyMode")]
    public string ConcurrencyMode { get; set; }

    [XmlElement("contentType")]
    public string ContentType { get; set; }

    [XmlElement("numberBatchesQueued")]
    public string NumberBatchesQueued { get; set; }

    [XmlElement("numberBatchesInProgress")]
    public string NumberBatchesInProgress { get; set; }

    [XmlElement("numberBatchesCompleted")]
    public string NumberBatchesCompleted { get; set; }

    [XmlElement("numberBatchesFailed")]
    public string NumberBatchesFailed { get; set; }

    [XmlElement("numberBatchesTotal")]
    public string NumberBatchesTotal { get; set; }

    [XmlElement("numberRecordsProcessed")]
    public string numberRecordsProcessed { get; set; }

    [XmlElement("numberRetries")]
    public string NumberRetries { get; set; }

    [XmlElement("apiVersion")]
    public string ApiVersion { get; set; }
}

代码：

var xml = @"<?xml version=""1.0"" encoding=""UTF-8""?>
<jobInfo xmlns=""http://www.force.com/2009/06/asyncapi/dataload"">
    <id>750x0000000005LAAQ</id>
    <operation>insert</operation>
    <object>Contact</object>
    <createdById>005x0000000wPWdAAM</createdById>
    <createdDate>2009-09-01T16:42:46.000Z</createdDate>
    <systemModstamp>2009-09-01T16:42:46.000Z</systemModstamp>
    <state>Open</state>
    <concurrencyMode>Parallel</concurrencyMode>
    <contentType>CSV</contentType>
    <numberBatchesQueued>0</numberBatchesQueued>
    <numberBatchesInProgress>0</numberBatchesInProgress>
    <numberBatchesCompleted>0</numberBatchesCompleted>
    <numberBatchesFailed>0</numberBatchesFailed>
    <numberBatchesTotal>0</numberBatchesTotal>
    <numberRecordsProcessed>0</numberRecordsProcessed>
    <numberRetries>0</numberRetries>
    <apiVersion>28.0</apiVersion>
</jobInfo>";

var serializer = new XmlSerializer(typeof(JobInfo));

JobInfo jobInfo;

using(var stream = new StringReader(xml))
using(var reader = XmlReader.Create(stream))
{
    jobInfo = (JobInfo)serializer.Deserialize(reader);
}

- Dustin Kingen

---

这不会填充xmlns属性。 - VMAtm

正确的做法是将该属性作为类的一部分，因此我已经将其删除。 - Dustin Kingen

@VMAtm xmlns 不是一个属性，它是默认命名空间。 - rene

@rene 在他的类中有这个属性。 - VMAtm

Answer 3

添加命名空间。

  [XmlRoot("jobInfo",Namespace = "http://www.force.com/2009/06/asyncapi/dataload")]
  public class JobInfo
  {
     // get rid of the xmlns property
     // other properties stay
  }

// there is no rootobject, JobInfo is your root
XmlSerializer serializer = new XmlSerializer(typeof(JobInfo));
StringReader rdr = new StringReader(response);
JobInfo resultingMessage = (JobInfo)serializer.Deserialize(rdr);

- rene

---

我现在得到的错误是 属性 'XmlElement' 在此声明类型上无效。 - user1477388

你应该为类名使用 XmlRoot 属性。 - VMAtm