MVC WEB API List<string>返回自定义的XML节点名称

背景:

 我们在API的返回对象中有一个List<string>属性的时候，MVC WEB API 默认返回的XML节点名称并不是我们想要的:

 对象定义：

public class Answer : ModelBase
    {
      
        private List<string> _otherAnswer;

        public List<string> OtherAnswer
        {
            get { return _otherAnswer; }
            set { _otherAnswer = value; }
        }
    }

返回结果：

<Answer xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/RainbowWebApi.Models">
<Result>1</Result><ResultDedail>sucess</ResultDedail>
<MasterAnswer></MasterAnswer>
<MasterQuestion>九阴真经是什么？</MasterQuestion>
<OtherAnswer xmlns:d2p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
 <d2p1:string>问题？</d2p1:string>
 <d2p1:string>1</d2p1:string>
 <d2p1:string>2？</d2p1:string>
 <d2p1:string>3？</d2p1:string>
 <d2p1:string>4？</d2p1:string>
</OtherAnswer>
<UserLogGuid>EE9175E2-DD93-8B48-AEE1-448248A2CCDF</UserLogGuid>
</Answer>

可以看到，OtherAnswer的下面节点为d2p1:string

 

解决：

1.在Golbal.asax.cs Application_Start()中设置XML序列化属性：

 protected void Application_Start()
        {
            AreaRegistration.RegisterAllAreas();

            WebApiConfig.Register(GlobalConfiguration.Configuration);
            FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
            RouteConfig.RegisterRoutes(RouteTable.Routes);
            BundleConfig.RegisterBundles(BundleTable.Bundles);

            GlobalConfiguration.Configuration.Formatters.XmlFormatter.UseXmlSerializer = true;
        }

 

2.实体类标识XML序列化的字段特性 XMLArrayItem，

 

public class Answer : ModelBase
    {
       private List<string> _otherAnswer;

        [XmlArrayItem("Question")]
        public List<string> OtherAnswer
        {
            get { return _otherAnswer; }
            set { _otherAnswer = value; }
        }
    }

 

3.下面就是我们想要的XML结果：

 

 

<Answer xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/RainbowWebApi.Models">
<Result>1</Result><ResultDedail>sucess</ResultDedail>
<MasterAnswer></MasterAnswer>
<MasterQuestion>九阴真经是什么？</MasterQuestion>
<OtherAnswer xmlns:d2p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
 <Question>问题？<Question>
 <Question>1</Question>
 <Question>2？</Question>
 <Question>3？</Question>
 <Question>4？</Question>
</OtherAnswer>
<UserLogGuid>EE9175E2-DD93-8B48-AEE1-448248A2CCDF</UserLogGuid>
</Answer>