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我成功地使用此代码从 App_Data 文件夹加载 XML。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Net;
using System.Net.Http;
using System.Web.Http;
using System.Data;
using Newtonsoft.Json;
using System.Xml.Linq;
using System.Xml;
using XMLTest2.Models;

namespace XMLTest2.Controllers
{
    public class PeopleController : ApiController
    {
        public List<XMLpeople> GetAllPeople()
        {
            var path = HttpContext.Current.Server.MapPath(@"~/App_Data/XML_Test.xml");
            List<XMLpeople> people = new List<XMLpeople>();
            XMLpeople NewPerson = new XMLpeople();
            XDocument doc = XDocument.Load(path);

            foreach (XElement element in doc.Descendants("people").Descendants("person"))
            {
                NewPerson.id = element.Element("id").Value;
                NewPerson.name = element.Element("name").Value;
                NewPerson.age = element.Element("age").Value;
                NewPerson.description = element.Element("description").Value;
                people.Add(NewPerson);
            }

            return people;
        }
    }
}

现在我希望创建一个从这里到客户端的 Restful 服务。我试图用这些代码解析这个几天。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.IO;
using System.Data;
using System.Net;
using System.Net.Http;
using System.Web.Http;
using Newtonsoft.Json;
using System.Xml.Linq;
using System.Xml;

namespace XMLTest2.Models
{
    public class PeopleRestService
    {
        public List<XMLpeople> GetAllPeople()
        {
            string current_hostname = System.Web.HttpContext.Current.Request.Url.ToString();
            string api_url = "api/people";
            string url = current_hostname + api_url;

            WebClient proxy = new WebClient();
            using (var stream = proxy.OpenRead(url))
            {
                var response = proxy.DownloadString(url);
                XmlReader reader = XmlReader.Create(response); //I Got an error here. It says. Illegal characters in path.
                DataTable datatable = new DataTable();
                datatable.ReadXml(reader);

                List<XMLpeople> xxx = new List<XMLpeople>();

                xxx = (from DataRow row in datatable.Rows
                       select new XMLpeople
                       {
                           id = row["id"].ToString(),
                           name = row["name"].ToString(),
                           age = row["age"].ToString(),
                           description = row["description"].ToString()
                       }).ToList();
                return xxx;
        }
    }
 }
}

任何帮助或链接都会非常感谢！，并且我是 Asp.net MVC web api 的新手。

4

1 回答 1

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问题是它XmlReader.Create(string) 不接受 XML 字符串！它接受一个 URI - 传递一个包含 XML 的字符串肯定会导致异常！

相反，使用XmlReader.Create(Stream)or XmlReader.Create(TextReader)。在这种情况下，很容易使用StringReader（它是 的子类型TextReader）来加载数据：

var response = proxy.DownloadString(url);
using (var sr = new StringReader(response)) {
  XmlReader reader = XmlReader.Create(sr);
  // ..
}

也可能stream直接使用 - 即XmlReader reader = XmlReader.Create(stream)- 并完全跳过DownloadString，尽管它们可能存在一些编码差异。

于 2013-10-25T02:14:02.457 回答