Question

我正在尝试反序列化以下XML：

<?xml version="1.0" encoding="UTF-8"?>
<jobInfo
   xmlns="http://www.force.com/2009/06/asyncapi/dataload">
    <id>asjdkfljasl;kdf</id>
    <operation>query</operation>
    <object>jsdkfjsakldjakl</object>
    ...
</jobInfo>

我有以下代码可以发出POST请求并成功运行，但是无法反序列化到我的课程中。

client.DefaultRequestHeaders.Add("X-SFDC-Session", binding.SessionHeaderValue.sessionId);
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", binding.SessionHeaderValue.sessionId);

var content = new StringContent(createJobXml, Encoding.UTF8, "application/xml");
content.Headers.ContentType = new MediaTypeHeaderValue("application/xml");

HttpResponseMessage response = await client.PostAsync(
    $"https://{SERVER_INSTANCE}.salesforce.com/services/async/43.0/job", content
);
response.EnsureSuccessStatusCode();

jobInfo job = await response.Content.ReadAsAsync<jobInfo >(new List<MediaTypeFormatter>() {
    new XmlMediaTypeFormatter { UseXmlSerializer = true },
    new JsonMediaTypeFormatter()
});

但是我得到了错误

没有MediaTypeFormatter可以从媒体类型为'application / xml'的内容中读取'jobInfo'类型的对象，

我的jobInfo是使用xsd.exe doc.xml，xsd.exe doc.xsd /classes

生成的

[System.CodeDom.Compiler.GeneratedCodeAttribute("xsd", "4.6.81.0")]
[System.SerializableAttribute()]
[System.Diagnostics.DebuggerStepThroughAttribute()]
[System.ComponentModel.DesignerCategoryAttribute("code")]
[System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true, Namespace = "http://www.force.com/2009/06/asyncapi/dataload")]
[System.Xml.Serialization.XmlRootAttribute(Namespace = "http://www.force.com/2009/06/asyncapi/dataload", IsNullable = false)]
public partial class jobInfo
{
    private string idField;
    private string operationField;
    private string objectField;
    ...
    public string id
    {
        get {
            return this.idField;
        }
        set {
            this.idField = value;
        }
    }
    public string operation
    {
        get {
            return this.operationField;
        }
        set {
            this.operationField = value;
        }
    }
    ...
 }

要正确反序列化，我缺少什么？

这表明我应该将其读为字符串：

How to use HttpClient to read an XML response?

但这表明它应该“正常工作”

HttpClient ReadAsAsync<Type> only deserializing part of the response

我也尝试过（在使用xsd将xml转换为类之前使用过Bulkv1Job类）

[DataContract]
public class Bulkv1Job
{
    [DataMember]
    string id { get; set; }
    [DataMember]
    string operation { get; set; }
    [DataMember]
    string @object { get; set; }
    ...
}

和

[XmlRoot("jobInfo")]
public class Bulkv1Job
{
    [XmlElement("id")]
    string id { get; set; }
    [XmlElement("operation")]
    string operation { get; set; }
    ...
}

Answer 1

嗯，我不是肥皂专家，但如果我没记错的话，应该在属性上使用[DataMember]这样的修饰符，并在类上使用[DataContract（NameSpace =“ jobInfo”））这样的修饰符。您可以看到，在第一个建议中，您提供给该人使用[XmlRoot]和[XmlElement]

您还可以看到WCF Datacontract, some fields do not deserialize，也许对您有帮助

Answer 2

使用

测试后

var s = await response.content.readasstringasync();
var buffer = encoding.utf8.getbytes(s);
using (var stream = new memorystream(buffer)) {
    var serializer = new xmlserializer(typeof(jobinfo)); // FAILED LINE
    var jobinfo = (jobinfo)serializer.deserialize(stream);
    //then do whatever you want
    return jobinfo;
}

我发现序列化程序由于类保护错误而在上一行失败。确保jobInfo类是公共的并且可以访问的，错误消失并且deserialize(stream)起作用了。

随后删除该代码并使用readAsAsync<jobInfo>(...)即可正常工作。

感谢@Ryan

使用XmlMediaTypeFormatter或其他反序列化的ReadAsAsync类

2 个答案: