Question

上午，

我需要从我的网络服务返回一条消息。下面是我的代码示例，我将返回一个字符串。

[web method]
public string CheckFeedSubmission()
    {
        string responseText = "";
        try
        {
            //Stuff goes here
            responseText = "It Worked!"
        }
        catch (Exception ex) { responseText = "Opps wehave an error! Exception message:" + ex.Message; }
        return responseText ;
    }

我目前得到以下回复......

<string xmlns="http://tempuri.org/"/>

我希望返回类似

的内容

 {"success" : true, "message" : "***Message Here***"}

我相信一旦我理解了它，我将能够在需要时返回其他物品。它只是这个基础我需要解决。

非常感谢所有帮助，提前感谢：）

更新：刚发现这个......

 return "{Message:'hello world'}"

我需要像

这样的东西

 responseText = "{"success" : true, "message" : \"There has been an error. Message: " + ex.Message + "\"}"

Answer 1

使用：

[WebMethod] [ScriptMethod(ResponseFormat = ResponseFormat.Json)]//Specify return format. public string CheckFeedSubmission() { string responseText = ""; try { //Stuff goes here responseText = "It Worked!" } catch (Exception ex) { responseText = "Opps wehave an error! Exception message:" + ex.Message; } return responseText ; }

返回的结果如下：

<string xmlns="http://tempuri.org/"/> {"success" : true, "message" : "***Message Here***"} </string>

Answer 2

请使用webmethod的属性

   [WebMethod]
    [ScriptMethod(ResponseFormat = ResponseFormat.Json)]

调用者将其contenttype设置为application / json以使用webmethod

Answer 3

试试这个：

[WebMethod] 
[ScriptMethod(ResponseFormat = ResponseFormat.Json)]//Specify return format. 
public bool addUser(UserModel um)
    {
        bool result = false;
        result = Conversion.intToBool(SplashAwardsDB.executeNonQuery(
            "INSERT INTO dbo.User ("
            + "userName, password, firstName, lastName, address, contactNo, birthDate, familyID, familyRole, x, y ) "
            + " VALUES ("
            + "'" + um.userName + "', "
            + "'" + um.password + "', "
            + "'" + um.firstName + "', "
            + "'" + um.lastName + "', "
            + "'" + um.address + "', "
            + "'" + um.contactNo + "', "
            + "'" + um.birthDate + "', "
            + "'" + um.familyID + "', "
            + "'" + um.familyRole + "', "
            + "'" + um.x + "', "
            + "'" + um.y + "')"
            ));
        return result;
    }

Answer 4

要删除服务响应中的XML标记，请参阅StackOverflow上的以下答案：

ASP.NET WebService is Wrapping my JSON response with XML tags

Answer 5

这是我对framewok 4.5.2的解决方案，在FilterConfig类中添加以下代码，注意：您将需要lib Newtonsoft。

 public class FilterConfig
{
    public static void RegisterGlobalFilters(GlobalFilterCollection filters)
    {
        GlobalConfiguration.Configuration.Formatters.JsonFormatter.SerializerSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Serialize;
        GlobalConfiguration.Configuration.Formatters.Remove(GlobalConfiguration.Configuration.Formatters.XmlFormatter);
        GlobalConfiguration.Configuration.EnableCors();
        filters.Add(new HandleErrorAttribute());
    }
}

如何从webservice返回JSON

5 个答案: