问XmlException:遇到意外字符‘

EN

XmlException: Encountered an unexpected character '
System.Xml.XmlExceptionHelper.ThrowXmlException (System.Xml.XmlDictionaryReader reader, System.Xml.XmlException exception) (at <3abed3971fab48b2a085712365cc627f>:0)
System.Runtime.Serialization.Json.XmlJsonReader.Read () (at <3abed3971fab48b2a085712365cc627f>:0)
System.Xml.XmlBaseReader.ReadEndElement () (at <3abed3971fab48b2a085712365cc627f>:0)
System.Xml.XmlBaseReader.ReadElementContentAsString () (at <3abed3971fab48b2a085712365cc627f>:0)
System.Runtime.Serialization.XmlReaderDelegator.ReadElementContentAsString () (at <3abed3971fab48b2a085712365cc627f>:0)
System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at <1f0c1ef1ad524c38bbc5536809c46b48>:0)
Rethrow as TargetInvocationException: Exception has been thrown by the target of an invocation.
System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at <1f0c1ef1ad524c38bbc5536809c46b48>:0)
System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) (at <1f0c1ef1ad524c38bbc5536809c46b48>:0)
System.Runtime.Serialization.Json.JsonFormatReaderInterpreter.ReadValue (System.Type type, System.String name) (at <3abed3971fab48b2a085712365cc627f>:0)
System.Runtime.Serialization.Json.JsonFormatReaderInterpreter.ReadMembers (System.Int32 index, System.Runtime.Serialization.ClassDataContract classContract, System.Runtime.Serialization.BitFlagsGenerator expectedElements, System.Int32& memberIndex) (at <3abed3971fab48b2a085712365cc627f>:0)
System.Runtime.Serialization.Json.JsonFormatReaderInterpreter.ReadMembers (System.Runtime.Serialization.ClassDataContract classContract, System.Runtime.Serialization.ExtensionDataObject extensionData) (at <3abed3971fab48b2a085712365cc627f>:0)
System.Runtime.Serialization.Json.JsonFormatReaderInterpreter.ReadClass (System.Runtime.Serialization.ClassDataContract classContract) (at <3abed3971fab48b2a085712365cc627f>:0)
System.Runtime.Serialization.Json.JsonFormatReaderInterpreter.ReadFromJson (System.Runtime.Serialization.XmlReaderDelegator xmlReader, System.Runtime.Serialization.Json.XmlObjectSerializerReadContextComplexJson context, System.Xml.XmlDictionaryString emptyDictionaryString, System.Xml.XmlDictionaryString[] memberNames) (at <3abed3971fab48b2a085712365cc627f>:0)
System.Runtime.Serialization.Json.JsonFormatReaderGenerator+CriticalHelper+<>c__DisplayClass0_0.<GenerateClassReader>b__0 (System.Runtime.Serialization.XmlReaderDelegator xr, System.Runtime.Serialization.Json.XmlObjectSerializerReadContextComplexJson ctx, System.Xml.XmlDictionaryString emptyDictionaryString, System.Xml.XmlDictionaryString[] memberNames) (at <3abed3971fab48b2a085712365cc627f>:0)
System.Runtime.Serialization.Json.JsonClassDataContract.ReadJsonValueCore (System.Runtime.Serialization.XmlReaderDelegator jsonReader, System.Runtime.Serialization.Json.XmlObjectSerializerReadContextComplexJson context) (at <3abed3971fab48b2a085712365cc627f>:0)
System.Runtime.Serialization.Json.JsonDataContract.ReadJsonValue (System.Runtime.Serialization.XmlReaderDelegator jsonReader, System.Runtime.Serialization.Json.XmlObjectSerializerReadContextComplexJson context) (at <3abed3971fab48b2a085712365cc627f>:0)
System.Runtime.Serialization.Json.DataContractJsonSerializer.ReadJsonValue (System.Runtime.Serialization.DataContract contract, System.Runtime.Serialization.XmlReaderDelegator reader, System.Runtime.Serialization.Json.XmlObjectSerializerReadContextComplexJson context) (at <3abed3971fab48b2a085712365cc627f>:0)
System.Runtime.Serialization.Json.XmlObjectSerializerReadContextComplexJson.ReadDataContractValue (System.Runtime.Serialization.DataContract dataContract, System.Runtime.Serialization.XmlReaderDelegator reader) (at <3abed3971fab48b2a085712365cc627f>:0)
System.Runtime.Serialization.XmlObjectSerializerReadContext.InternalDeserialize (System.Runtime.Serialization.XmlReaderDelegator reader, System.String name, System.String ns, System.Type declaredType, System.Runtime.Serialization.DataContract& dataContract) (at <3abed3971fab48b2a085712365cc627f>:0)
System.Runtime.Serialization.XmlObjectSerializerReadContext.InternalDeserialize (System.Runtime.Serialization.XmlReaderDelegator xmlReader, System.Type declaredType, System.Runtime.Serialization.DataContract dataContract, System.String name, System.String ns) (at <3abed3971fab48b2a085712365cc627f>:0)
System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserialize (System.Runtime.Serialization.XmlReaderDelegator xmlReader, System.Type declaredType, System.Runtime.Serialization.DataContract dataContract, System.String name, System.String ns) (at <3abed3971fab48b2a085712365cc627f>:0)
System.Runtime.Serialization.Json.DataContractJsonSerializer.InternalReadObject (System.Runtime.Serialization.XmlReaderDelegator xmlReader, System.Boolean verifyObjectName) (at <3abed3971fab48b2a085712365cc627f>:0)
System.Runtime.Serialization.XmlObjectSerializer.InternalReadObject (System.Runtime.Serialization.XmlReaderDelegator reader, System.Boolean verifyObjectName, System.Runtime.Serialization.DataContractResolver dataContractResolver) (at <3abed3971fab48b2a085712365cc627f>:0)
System.Runtime.Serialization.XmlObjectSerializer.ReadObjectHandleExceptions (System.Runtime.Serialization.XmlReaderDelegator reader, System.Boolean verifyObjectName, System.Runtime.Serialization.DataContractResolver dataContractResolver) (at <3abed3971fab48b2a085712365cc627f>:0)
System.Runtime.Serialization.XmlObjectSerializer.ReadObjectHandleExceptions (System.Runtime.Serialization.XmlReaderDelegator reader, System.Boolean verifyObjectName) (at <3abed3971fab48b2a085712365cc627f>:0)
System.Runtime.Serialization.Json.DataContractJsonSerializer.ReadObject (System.Xml.XmlDictionaryReader reader) (at <3abed3971fab48b2a085712365cc627f>:0)
System.Runtime.Serialization.Json.DataContractJsonSerializer.ReadObject (System.IO.Stream stream) (at <3abed3971fab48b2a085712365cc627f>:0)
Server.Update () (at Assets/Scripts/Network/Server.cs:116)

public void sendToServer(NMSG msg, int channelId)
{

    if (!PacketHandler.packets.Contains(msg.GetType()))
    {
        Debug.Log("packet not registered");
        return;
    }

    byte error;
    byte[] buffer;
    var stream = new MemoryStream();
    var serializer = new DataContractJsonSerializer(typeof(NMSG));
    serializer.WriteObject(stream, msg);
    buffer = stream.ToArray();

    int bufferSize = buffer.Length;
    NetworkTransport.Send(hostId, connectionId, channelId, buffer, bufferSize, out error);
}

MemoryStream memoryStream = new MemoryStream(recBuffer);
memoryStream.Position = 0;
var ser = new DataContractJsonSerializer(typeof(NMSG));
NMSG msg = (NMSG)ser.ReadObject(memoryStream);
onData(connectionId, channelId, recHostId, msg);

using System;
using System.Runtime.Serialization;

[DataContract]
[KnownType("GetKnownTypes")]
public abstract class NMSG
{
    [DataMember]
    private byte? discriminator = null;

    public NMSG()
    {

    }

    public NMSG(byte discriminator)
    {
        this.discriminator = discriminator;

    }

    public byte? getPacketId()
    {
        return this.discriminator;
    }

    public static Type[] GetKnownTypes()
    {
        return PacketHandler.packets.ToArray();
    }

    public abstract void HandleServer(NMSG msg, int connectionId);

    public abstract void HandleClient(NMSG msg);

}

[DataContract]
public class NMSG_ConnectAccount : NMSG
{
    [DataMember]
    public string username;
    [DataMember]
    public string password;

    public NMSG_ConnectAccount()
    {

    }

    public NMSG_ConnectAccount(string username, string password) : base((byte)PacketHandler.packets.IndexOf(typeof(NMSG_ConnectAccount)))
    {
        this.username = username;
        this.password = password;
    }


    public override void HandleClient(NMSG msg) 
    {

    }

    public override void HandleServer(NMSG msg, int connectionId)
    {
        NMSG_ConnectAccount cmsg = (NMSG_ConnectAccount)msg;
        Server server = Server.getServer();
        Mysql mysql = server.mysql;
        password = EncryptionUtils.MD5Hash(password);

        mysql.openMysqlConnection();

        MySqlCommand commandsql = new MySqlCommand("SELECT * FROM users WHERE username = '" + cmsg.username + "'", mysql.con);
        MySqlDataReader MyReader = commandsql.ExecuteReader();

        string activated = "";
        string mpassword = "";
        string muser = "";

        if (MyReader.Read())
        {
            activated = MyReader["confirmed"].ToString();
            mpassword = MyReader["password"].ToString();
            muser = MyReader["username"].ToString();
        }
        MyReader.Close();

        if (mpassword != cmsg.password || cmsg.username != muser)
        {
            server.sendToPlayer(new NMSG_ConnectionMessage(cmsg.username,false,false), server.reliableChannel, connectionId);
            return;
        }

        if (server.users.ContainsKey(connectionId))
            server.users[connectionId].setName(muser);
        else
            return;

        if (activated == "False")
        {
            server.sendToPlayer(new NMSG_ConnectionMessage(cmsg.username,false,true), server.reliableChannel, connectionId);
            return;
        }

        server.users[connectionId].pData = new PlayerData(cmsg.username);
        server.users[connectionId].isAuth = true;
        server.sendToPlayer(new NMSG_ConnectionMessage(cmsg.username,true,false), server.reliableChannel, connectionId);
    }

}