Question

我有一个奇怪的问题反序列化，并想知道是否有人可以阐明它。抱歉粗略的代码，但这是一个原型。

基本上我正在尝试序列化和反序列化一个简单的类：

[Serializable]

 [Preserve(AllMembers=true)]

 public class School

 {

  public School ()

  {

  }

   public string est_name{get; set;}

             public string postcode{get; set;}

          public string phase {get; set;}

            public string head_name{get; set;}

          public string urn {get; set;}

          public long distance{get; set;}

           public string coord{get; set;}

           public string gender{get; set;}

          public int totpup{get; set;}

   public int totelig{get; set;}

   public float pmattest14p{get; set;}

   public float pmattest15{get; set;}

      public float pengtest14p{get; set;}

      public float pengtest15{get; set;}

                    public float apsengmattest{get; set;

         }

序列化的代码如下，使用School []作为T，它是来自泛型类的方法：

public void serializesample(T sample)

  {

        XmlSerializer serializer = new XmlSerializer(typeof(T));

        string path = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Personal), "Sample2.xml")      Stream st = new FileStream(path, FileMode.OpenOrCreate);

        XmlWriter w = new XmlTextWriter(st, Encoding.UTF8);

                  serializer.Serialize(w, sample);   

        st.Flush(); 

                st.Close();  

            }

生成以下XML文件：

<?xml version="1.0" encoding="utf-8"?>

<ArrayOfSchool xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">

<School><est_name>testName</est_name><postcode>N7 0NA</postcode><head_name>thedude</head_name><distance>0</distance><gender>mixed</gender><totpup>0</totpup><totelig>0</totelig><pmattest14p>0</pmattest14p><pmattest15>0</pmattest15><pengtest14p>5</pengtest14p><pengtest15>3</pengtest15><apsengmattest>0</apsengmattest></School><School><est_name>testName2</est_name><postcode>N7 4NA</postcode><head_name>thedude</head_name><distance>0</distance><gender>mixed2</gender><totpup>0</totpup><totelig>0</totelig><pmattest14p>0</pmattest14p><pmattest15>0</pmattest15><pengtest14p>5</pengtest14p><pengtest15>3</pengtest15><apsengmattest>0</apsengmattest></School></ArrayOfSchool>

反序列化代码如下，School []为T：

private T ReadObject(XmlReader reader)
  {

   XmlSerializer serializer = new XmlSerializer(typeof(T));
   return (T)serializer.Deserialize(reader);   
  }

XmlReader r = XmlReader.Create(new     FileStream(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Personal), "Sample2.xml"), FileMode.Open));

e.responseObject = ReadObject(r);

我在最后列出的行“responseObject = ReadObject（r）;”中继续得到以下异常：

System.InvalidOperationException：XML文档中存在错误。 ---＆GT; System.InvalidOperationException :(未知）未被预期在/Developer/MonoTouch/Source/mono/mcs/class/System.XML/System.Xml.Serialization/XmlSerializationReaderInterpreter.cs中的System.Xml.Serialization.XmlSerializationReaderInterpreter.ReadRoot（System.Xml.Serialization.XmlTypeMapping rootMap）[0x00050] ：182 在/Developer/MonoTouch/Source/mono/mcs/class/System.XML/System.Xml.Serialization/XmlSerializationReaderInterpreter.cs:87中的System.Xml.Serialization.XmlSerializationReaderInterpreter.ReadRoot（）[0x00028]中在/Developer/MonoTouch/Source/mono/mcs/class/System.XML/System.Xml.Serialization/XmlSerializer.cs中的System.Xml.Serialization.XmlSerializer.Deserialize（System.Xml.Serialization.XmlSerializationReader reader）[0x0001c]中：361 ---内部异常堆栈跟踪结束--- 在/Developer/MonoTouch/Source/mono/mcs/class/System.XML/System.Xml.Serialization/XmlSerializer.cs中的System.Xml.Serialization.XmlSerializer.Deserialize（System.Xml.Serialization.XmlSerializationReader reader）[0x00061]中：366 在/Developer/MonoTouch/Source/mono/mcs/class/System.XML/System.Xml.Serialization/XmlSerializer.cs:350中的System.Xml.Serialization.XmlSerializer.Deserialize（System.Xml.XmlReader xmlReader）[0x0002c]中在Burnspeed.Utilities.WebRequestHelper 1[SchoolFinder_Prototype.School[]].ReadObject (System.Xml.XmlReader stream) [0x00010] in /Users/Khalil/Desktop/Monotouch Utility/Burnspeed.Utilities/Burnspeed.Utilities/WebRequestHelper.cs:201 at Burnspeed.Utilities.WebRequestHelper 1 [SchoolFinder_Prototype.School []]。/ Users / Khalil / Desktop / Monotouch Utility / Burnspeed.Utilities / Burnspeed.Utilities / WebRequestHelper.cs中的ProcessHttpResponseAndFire（IAsyncResult iar）[0x000ae] ：156

Answer 1

我不完全确定为什么会发生这种异常。我尝试了你的代码只做了很少的修改，它的工作原理。我没有使用[Preserve（AllMembers = true）]，我将每个T替换为一个School []（你也做了，不是吗？）我替换了行“e.responseObject = ReadObject（r） “，你的异常发生的地方，”School [] newArray = ReadObject（r）“。不想编写其余代码而不修改这些小位。

您可以将方法更改为

，而不是将每个T替换为School []

    public void serializesample<T>(T sample) {

        XmlSerializer serializer = new XmlSerializer(typeof(T));

        string path = "G:\\sample.xml";
        Stream st = new FileStream(path, FileMode.OpenOrCreate);

        XmlWriter w = new XmlTextWriter(st, Encoding.UTF8);

        serializer.Serialize(w, sample);

        st.Flush();

        st.Close();

    }

    private T ReadObject<T>(XmlReader reader) {

        XmlSerializer serializer = new XmlSerializer(typeof(T));
        return (T)serializer.Deserialize(reader);
    }

并通过serializesample<School[]>(array)和ReadObject<School[]>(r)调用它们。

我只是不确定你在代码中用T做了什么，我猜问题可能就在那里。希望有所帮助，即使异常来自Monotouch [Preserve（AllMembers = true）]也可能无济于事。

单触后的序列化问题

1 个答案: