在这个问题上花了整个周末后，我能看到的唯一解决方案是一个名为 CSE HTML Validator 的商业库
它位于这里http://www.htmlvalidator.com/htmldownload.html
我为它写了一个简单的包装器。这是代码
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
[assembly: CLSCompliant(true)]
namespace HtmlValidator
{
public class Validator
{
#region Constructors...
public Validator(string htmlToValidate)
{
HtmlToValidate = htmlToValidate;
HasExecuted = false;
Errors = new List<ValidationResult>();
Warnings = new List<ValidationResult>();
OtherMessages = new List<ValidationResult>();
}
#endregion
#region Properties...
public IList<ValidationResult> Errors { get; private set; }
public bool HasExecuted { get; private set; }
public string HtmlToValidate { get; private set; }
public IList<ValidationResult> OtherMessages { get; private set; }
public string ResultsString { get; private set; }
public string TempFilePath { get; private set; }
public IList<ValidationResult> Warnings { get; private set; }
#endregion
#region Public methods...
public void ValidateHtmlFile()
{
WriteTempFile();
ExecuteValidator();
DeleteTempFile();
ParseResults();
HasExecuted = true;
}
#endregion
#region Private methods...
private void DeleteTempFile()
{
TempFilePath = Path.GetTempFileName();
File.Delete(TempFilePath);
}
private void ExecuteValidator()
{
var psi = new ProcessStartInfo(GetHTMLValidatorPath())
{
RedirectStandardInput = false,
RedirectStandardOutput = true,
RedirectStandardError = false,
UseShellExecute = false,
Arguments = String.Format(@"-e,(stdout),0,16 ""{0}""", TempFilePath)
};
var p = new Process
{
StartInfo = psi
};
p.Start();
var stdOut = p.StandardOutput;
ResultsString = stdOut.ReadToEnd();
}
private static string GetHTMLValidatorPath()
{
return @"C:\Program Files (x86)\HTMLValidator120\cmdlineprocessor.exe";
}
private void ParseResults()
{
var results = JsonConvert.DeserializeObject<dynamic>(ResultsString);
IList<InternalValidationResult> messages = results.messages.ToObject<List<InternalValidationResult>>();
foreach (InternalValidationResult internalValidationResult in messages)
{
ValidationResult result = new ValidationResult()
{
Message = internalValidationResult.message,
LineNumber = internalValidationResult.linenumber,
MessageCategory = internalValidationResult.messagecategory,
MessageType = internalValidationResult.messagetype,
CharLocation = internalValidationResult.charlocation
};
switch (internalValidationResult.messagetype)
{
case "ERROR":
Errors.Add(result);
break;
case "WARNING":
Warnings.Add(result);
break;
default:
OtherMessages.Add(result);
break;
}
}
}
private void WriteTempFile()
{
TempFilePath = Path.GetTempFileName();
StreamWriter streamWriter = File.AppendText(TempFilePath);
streamWriter.WriteLine(HtmlToValidate);
streamWriter.Flush();
streamWriter.Close();
}
#endregion
}
}
public class ValidationResult
{
public string MessageType { get; set; }
public string MessageCategory { get; set; }
public string Message { get; set; }
public int LineNumber { get; set; }
public int CharLocation { get; set; }
public override string ToString()
{
return String.Format("{0} Line {1} Char {2}:: {3}", this.MessageType, this.LineNumber, this.CharLocation, this.Message);
}
}
public class InternalValidationResult
{
/*
* DA: this class is used as in intermediate store of messages that come back from the underlying validator. The fields must be cased as per the underlying Json object.
* That is why they are ignored.
*/
#region Properties...
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1709:IdentifiersShouldBeCasedCorrectly", MessageId = "charlocation"), System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "charlocation")]
public int charlocation { get; set; }
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1709:IdentifiersShouldBeCasedCorrectly", MessageId = "linenumber"), System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "linenumber")]
public int linenumber { get; set; }
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1709:IdentifiersShouldBeCasedCorrectly", MessageId = "message"), System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "message")]
public string message { get; set; }
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "messagecategory"), System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1709:IdentifiersShouldBeCasedCorrectly", MessageId = "messagecategory")]
public string messagecategory { get; set; }
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1709:IdentifiersShouldBeCasedCorrectly", MessageId = "messagetype"), System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "messagetype")]
public string messagetype { get; set; }
#endregion
}
使用/测试
private const string ValidHtml = "<!DOCType html><html><head></head><body><p>Hello World</p></body></html>";
private const string BrokenHtml = "<!DOCType html><html><head></head><body><p>Hello World</p></body>";
[TestMethod]
public void CanValidHtmlStringReturnNoErrors()
{
Validator subject = new Validator(ValidHtml);
subject.ValidateHtmlFile();
Assert.IsTrue(subject.HasExecuted);
Assert.IsTrue(subject.Errors.Count == 0);
}
[TestMethod]
public void CanInvalidHtmlStringReturnErrors()
{
Validator subject = new Validator(BrokenHtml);
subject.ValidateHtmlFile();
Assert.IsTrue(subject.HasExecuted);
Assert.IsTrue(subject.Errors.Count > 0);
Assert.IsTrue(subject.Errors[0].ToString().Contains("ERROR"));
}