XML的序列化与反序列化

开发时会把数据持久化成xml格式，当然可以用xmlwriter来实现，不过感觉不方便，而且很繁琐。推荐使用直接序列化、反序列化对象的方法来处理。

直接上代码：

     public static class Utility
     {
         public static T Deserialize<T>(string path)
         {
             try
             {
                 using (var fs = new StreamReader(path))
                 {
                     XmlSerializer serializer = new XmlSerializer(typeof(T));
                     var result = (T)serializer.Deserialize(fs);
                     return result;
                 }
             }
             catch (Exception)
             { }
             return default(T);
         }

         public static void Serialize<T>(T serializableObject, string path)
         {
             try
             {
                 using (var sw = new StringWriter())
                 {
                     XmlSerializer serializer = new XmlSerializer(typeof(T));
                     serializer.Serialize(sw, serializableObject);

                     File.WriteAllText(path, sw.GetStringBuilder().ToString());
                 }
             }
             catch (Exception)
             { }
         }
     }

对应的对象：（两种）

      [XmlRoot("root")]
     public class SavedMessage
     {
         public int UserId { get; set; }
         [XmlArray("messages")]
         [XmlArrayItem("message", Type = typeof(string))]
         public List<string> Messages { get; set; }
     }

     [XmlRoot("root")]
     public class SavedUser
     {
         [XmlArray("users")]
         [XmlArrayItem("user", Type = typeof(User))]
         public List<User> Users { get; set; }
     }

使用方法：

1 // save to file
2 Utility.Serialize<SavedMessage>(savedMessage, "Message.xml");
3
4 // read from file
5 var messageModel = Utility.Deserialize<SavedMessage>("Message.xml");

生成的文件格式：（xml里的结点是和对象上的xml属性一致的）

 // users
 <?xml version="1.0" encoding="utf-16"?>
 <root xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
   <users>
     <user>
       <Id></Id>
       <Name>John</Name>
     </user>
     <user>
       <Id></Id>
       <Name>Mary</Name>
     </user>
   </users>
 </root>

 // message
 <?xml version="1.0" encoding="utf-16"?>
 <root xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
   <UserId></UserId>
   <messages>
     <message>aaa</message>
     <message>bbb</message>
     <message>ccc</message>
   </messages>
 </root>