C#对象序列化之坑

最新推荐文章于 2024-01-06 16:31:59 发布

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本文介绍了C#中XML序列化的一些注意事项，包括如何避免默认命名空间、解决UTF-8编码问题以及处理序列化结果开头的空白字符，以确保与其他系统交互时的兼容性。

序列化的方法很简单，如下：

        /// <summary>
        /// 文本化XML序列化
        /// </summary>
        /// <param name="Obj">对象</param>
        public static string ToXml1<T>(T Obj)
        {
            XmlSerializerNamespaces theNames = new XmlSerializerNamespaces();
            theNames.Add("", "");
            XmlSerializer theSerializer = new XmlSerializer(Obj.GetType());
            StringBuilder theSB = new StringBuilder();
            var theXmlWS = new XmlWriterSettings();
            theXmlWS.Encoding = Encoding.UTF8;
            var theXml = "";
            using (XmlWriter writer = XmlWriter.Create(theSB, theXmlWS))
            {
                theSerializer.Serialize(writer, Obj, theNames);
                theXml = theSB.ToString();
            }
            return theXml;
        }

注意，如果不加空的命名空间，序列化的时候会加一些默认的名字空间，非常不好；但这个方法有个问题，就是输出的是utf-16,中间那个设置为utf8没鸟用，为了序列化成utf-8,如下写：

/// <summary>
        /// 文本化XML序列化
        /// </summary>
        /// <param name="Obj">对象</param>
        public static string ToXml<T>(T Obj, Encoding TextEncoding = null)
        {
            if (TextEncoding == null)
            {
                TextEncoding = Encoding.UTF8;
            }
            XmlSerializerNamespaces theNames = new XmlSerializerNamespaces();
            theNames.Add("", "");

            MemoryStream theMS = new MemoryStream();
            StreamWriter theTextWriter = new StreamWriter(theMS, TextEncoding);
            XmlSerializer theSerializer = new XmlSerializer(Obj.GetType());
            var theXml = "";
            using (XmlWriter writer = XmlWriter.Create(theTextWriter))
            {
                theSerializer.Serialize(writer, Obj, theNames);
                var theDataBytes = theMS.GetBuffer();
                theXml = TextEncoding.GetString(theDataBytes);
            }
            theTextWriter.Close();
            theMS.Close();
            return theXml;
        }

上面代码序列化正常，但IE浏览器可能对上述结果无法正常显示，经过调试我发现，序列化时在头部会多一个空白字符，经过修改，如下才是正常：