我正在尝试从WCF服务返回一些JSON。该服务仅从我的数据库返回一些内容。我可以得到数据。但是,我担心JSON的格式。当前,返回的JSON格式如下:
{"d":"[{\"Age\":35,\"FirstName\":\"Peyton\",\"LastName\":\"Manning\"},{\"Age\":31,\"FirstName\":\"Drew\",\"LastName\":\"Brees\"},{\"Age\":29,\"FirstName\":\"Tony\",\"LastName\":\"Romo\"}]"}
实际上,我希望JSON的格式尽可能整洁。我相信(我可能是不正确的),以干净的JSON表示的相同结果集应如下所示:
[{ "Age": 35, "FirstName": "Peyton", "LastName": "Manning" }, { "Age": 31, "FirstName": "Drew", "LastName": "Brees" }, { "Age": 29, "FirstName": "Tony", "LastName": "Romo" }]
我不知道“ d”来自哪里。我也不知道为什么要插入转义字符。我的实体如下所示:
[DataContract] public class Person { [DataMember] public string FirstName { get; set; } [DataMember] public string LastName { get; set; } [DataMember] public int Age { get; set; } public Person(string firstName, string lastName, int age) { this.FirstName = firstName; this.LastName = lastName; this.Age = age; } }
负责返回内容的服务定义为:
[ServiceContract(Namespace = "")] [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)] public class TestService { [OperationContract] [WebGet(ResponseFormat = WebMessageFormat.Json)] public string GetResults() { List<Person> results = new List<Person>(); results.Add(new Person("Peyton", "Manning", 35)); results.Add(new Person("Drew", "Brees", 31)); results.Add(new Person("Tony", "Romo", 29)); // Serialize the results as JSON DataContractJsonSerializer serializer = new DataContractJsonSerializer(results.GetType()); MemoryStream memoryStream = new MemoryStream(); serializer.WriteObject(memoryStream, results); // Return the results serialized as JSON string json = Encoding.Default.GetString(memoryStream.ToArray()); return json; } }
如何从WCF服务返回“干净” JSON?谢谢!
将GetResults的返回类型更改为List<Person>。 消除用于将List序列化为json字符串的代码-WCF会自动为您执行此操作。
List<Person>
使用您对Person类的定义,此代码对我有用:
public List<Person> GetPlayers() { List<Person> players = new List<Person>(); players.Add(new Person { FirstName="Peyton", LastName="Manning", Age=35 } ); players.Add(new Person { FirstName="Drew", LastName="Brees", Age=31 } ); players.Add(new Person { FirstName="Brett", LastName="Favre", Age=58 } ); return players; }
结果:
[{"Age":35,"FirstName":"Peyton","LastName":"Manning"}, {"Age":31,"FirstName":"Drew","LastName":"Brees"}, {"Age":58,"FirstName":"Brett","LastName":"Favre"}]
(全部一行)
我还在方法上使用了此属性:
[WebInvoke(Method = "GET", RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json, UriTemplate = "players")]
使用Method =“ GET”的WebInvoke与WebGet相同,但是由于我的某些方法是POST,因此为了保持一致性,我使用了所有WebInvoke。
UriTemplate设置该方法可用的URL。因此,我可以进行GET操作, http://myserver/myvdir/JsonService.svc/players并且可以正常使用。
http://myserver/myvdir/JsonService.svc/players
还要检查IIRF或其他URL重写器,以摆脱URI中的.svc。