如何遍历文件夹并更新 XML 文件

Question

我有一个软件，它在安装时会询问我服务器的 IP 地址，并将该地址存储到不同文件夹中的多个配置文件中。

我仍然是 C# 的新手，但我创建了一个实用程序，如果出于某种原因他们的 IP 地址要更改或他们想要更改它，存储的 IP 地址将更新为当前 IP 地址。

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.NetworkInformation;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Xml;
using System.Xml.Linq;


namespace ConfigTool
{
    class Class1
    {
        //Not sure if this would work since this is just a path to a bunch of folders and not the actual xml files within those folders
        const string FILENAME = @"C:\Program Files (x86)\Stuff\Noodles"; 

        public static IPAddress GetIPAddress(string hostName)
        {
            Ping ping = new Ping();
            var replay = ping.Send(hostName);

            if (replay.Status == IPStatus.Success)
            {
                return replay.Address;
            }
            return null;
        }

        static void Main(string[] args)
        {
            //XDocument doc =  XDocument.Load(FILENAME); 
            var path = Directory.EnumerateFiles(@"C:\Program Files (x86)\Stuff\Noodles", "*.config");
            foreach (var xmlfile in path)
            {
                XDocument doc = XDocument.Load(xmlfile);
                List<XElement> endpoints = doc.Descendants("endpoint").ToList();
                foreach (var endpoint in endpoints)
                {
                    string address = (string)endpoint.Attribute("address");
                    //string newIp = "10.249.30.4";

                    string pattern = "//[^:]+";
                    address = Regex.Replace(address, pattern, "//" + GetIPAddress(Dns.GetHostName()));

                    endpoint.Attribute("address").SetValue(address);
                }
                doc.Save(FILENAME);
            }
        }
    }
}

我的代码正在过滤目录中的所有 xml 配置文件，并使用新的 IP 地址对其进行更新。但是，它们是某些文件夹中的一些 xml 配置文件，我不想像 net.tcp://localhost 那样更改它们。

<endpoint name="SessionLocal" address="net.tcp://localhost:7732/AuthenticationServices/Secure" binding="netTcpBinding" contract="WelchAllyn.Services.ServiceContracts.IAuthenticationService" bindingConfiguration="TcpCustomSecurity" behaviorConfiguration="SecureBehaviorName">
        <identity>
          <dns value="localhost"/>
        </identity>
      </endpoint>
      <endpoint name="DataLocal" address="net.tcp://localhost:7732/DataServices/Secure" binding="netTcpBinding" contract="WelchAllyn.Services.ServiceContracts.IDataService" bindingConfiguration="TcpCustomSecurity" behaviorConfiguration="SecureBehaviorName">
        <identity>
          <dns value="localhost"/>
        </identity>
      </endpoint>

我要更改的 xml 文件具有实际的 IP 地址，例如

<endpoint name="SubscriptionLocal" address="net.tcp://10.249.30.4:7732/EventSubscriberServices/Secure" binding="netTcpBinding" contract="WelchAllyn.Services.ServiceContracts.ISubscriptionService" bindingConfiguration="TcpCustomSecurity" behaviorConfiguration="CustomValidator">
        <identity>
          <dns value="localhost" />
        </identity>
      </endpoint>
      <endpoint name="PublishLocal" address="net.tcp://10.249.30.4:7732/EventPublishServices/Secure" binding="netTcpBinding" contract="WelchAllyn.Services.ServiceContracts.IPublishService" bindingConfiguration="TcpCustomSecurity" behaviorConfiguration="CustomValidator">
        <identity>
          <dns value="localhost" />
        </identity>
      </endpoint>

我的问题是如何仅使用实际 IP 地址而不是使用 localhost 更新 IP 地址。我将如何遍历目录中的每个文件夹并将每个 xml 文件保存在每个文件夹中？

Answer 1

对于嵌套文件夹，需要搜索SearchOption.AllDirectories：

var path = Directory.EnumerateFiles(@"C:\Program Files (x86)\Stuff\Noodles", "*.config", SearchOption.AllDirectories);

至于 localhost，你可以这样跳过它们：

string address = (string)endpoint.Attribute("address");
if (new Uri(address).Host == "localhost") continue;

---

编辑：这里是完整的代码：

static void Main(string[] args)
{
    Console.WriteLine("Enter the ip address to update:");
    var ip = Console.ReadLine();
    if (!IsValidIPv4Address(ip))
        throw new ArgumentException("Invalid ip address: " + ip);

    var path = Directory.EnumerateFiles(@"C:\Program Files (x86)\Stuff\Noodles", "*.config", SearchOption.AllDirectories);
    foreach (var xmlfile in path)
    {
        var doc = XDocument.Load(xmlfile);
        var endpointsToUpdate = doc
            .Descendants("endpoint")
            .Where(x => new Uri((string)x.Attribute("address")).Host != "localhost")
            .ToArray();

        // skip if there is nothing to update
        if (!endpointsToUpdate.Any()) return;

        foreach (var endpoint in endpointsToUpdate)
        {
            string address = (string)endpoint.Attribute("address");
            string pattern = "//[^:]+";
            address = Regex.Replace(address, pattern, "//" + GetIPAddress(Dns.GetHostName()));

            endpoint.Attribute("address").SetValue(address);
        }

        doc.Save(xmlfile);
    }
}

bool IsValidIPv4Address(string text)
{
    return text?.Split('.') is string[] parts &&
        parts.Length == 4 &&
        parts.All(x => byte.TryParse(x, out _));
}

edit2：使用用户输入完成。