XSD生成的可序列化复杂对象XML序列化时数组类型转换异常求助

Hey there, that serialization error is definitely coming from how you're constructing the Body property's nested arrays. Let's break this down step by step:

The Root Cause: Mismatched XML Hierarchy and Class Structure #

Looking at your sample XML, the Body section follows this hierarchy:

<body>
  <journal>
    <journal_metadata>...</journal_metadata>
  </journal>
</body>

The XSD-generated classes mirror this structure, which means:

• DoiBatch.Body is an array of DoiBatchBody objects
• Each DoiBatchBody contains an array of Journal objects
• Each Journal contains an array of JournalMetadata objects (your doiBody variable)

Your original code doiBatch.Body = new[] { new[]{ new []{doiBody}}}; creates a 3-layer array of JournalMetadata directly, which doesn't match the class structure at all—hence the type conversion errors.

Fixed Code: Build the Hierarchy Correctly #

Update the #region Body section of your Create method to construct the objects in the right order:

#region Body
// Create your JournalMetadata object as before
DoiBatchBodyJournalJournalMetadata doiBody = new DoiBatchBodyJournalJournalMetadata();
DoiBatchBodyJournalJournalMetadataDoiData doiBodyData = new DoiBatchBodyJournalJournalMetadataDoiData();
doiBodyData.Doi = jPost.DoiPrefix + jPost.RefNum;
doiBodyData.Resource = jPost.BaseUrl + @"?refnum=" + jPost.RefNum;

doiBody.DoiData = new[] { doiBodyData };
doiBody.FullTitle = jPost.Title;
doiBody.AbbrevTitle = jPost.Title.Substring(0, 10); //truncate title.
doiBody.Language = "EN";

// 1. Wrap JournalMetadata in an array and assign to a Journal object
var journal = new DoiBatchBodyJournal();
journal.JournalMetadata = new[] { doiBody };

// 2. Wrap the Journal in an array and assign to a DoiBatchBody object
var batchBody = new DoiBatchBody();
batchBody.Journal = new[] { journal };

// 3. Finally, wrap the DoiBatchBody in an array for the DoiBatch.Body property
doiBatch.Body = new[] { batchBody };
#endregion

Bonus Fix: Incorrect Timestamp Format #

I noticed you're generating the timestamp with DateTime.Now.ToOADate().ToString(CultureInfo.InvariantCulture)—this won't produce the format Crossref expects. They require a timestamp in YYYYMMDDHHMMSS format (like the sample's 20190430133609), so update that line to:

doiHead.Timestamp = DateTime.Now.ToString("yyyyMMddHHmmss", CultureInfo.InvariantCulture);

With these changes, your serialization should work without throwing type errors, and your timestamp will be compliant with Crossref's requirements.

内容的提问来源于stack exchange，提问作者Richard Barnes