Question

var responseFromServer =
  // lines split for readability
  "{\"flag\":true,\"message\":\"\",\"result\":{\"ServicePermission\":true,"
  +  "\"UserGroupPermission\":true}}";
var serializer = new System.Web.Script.Serialization.JavaScriptSerializer();
var responseValue = serializer.DeserializeObject(responseFromServer);

responseFromServer值是获取webservice，然后如何获取JSON字符串值，如“flag”，“Servicepermission”??

词缀：对不起，用c＃来做这件事。

Answer 1

注意：JavaScriptSerializer实际上是我测试过的最慢的JSON Serializer。所以我不得不将其从my benchmarks中删除，因为它花了太长时间（慢了100倍）。

无论如何，使用ServiceStack.Text's JSON Serializer

轻松解决了这个问题

var response = JsonSerializer.DeserializeFromString<Dictionary<string,string>>(responseFromServer);
var permissions = JsonSerializer.DeserializeFromString<Dictionary<string,string>>(response["result"]);
Console.WriteLine(response["flag"] + ":" + permissions["ServicePermission"]);

为了完整性，这也适用于ServiceStack.Text.JsonSerializer：

public class Response
{
    public bool flag { get; set; }
    public string message { get; set; }
    public Permisions result { get; set; }
}
public class Permisions
{
    public bool ServicePermission { get; set; }
    public bool UserGroupPermission { get; set; }
}

var response = JsonSerializer.DeserializeFromString<Response>(responseFromServer);
Console.WriteLine(response.flag + ":" + response.result.ServicePermission);

Answer 2

    if u are using jQuery u can do this

    var json=jQuery.parseJSON(responseFromServer);

    //acess
    alert(json.ServicePermission);

if you are asing microsoft ajax do this

var json=Sys.Serialization.JavaScriptSerializer.deserialize(responseFromServer,true);

    //acess
    alert(json.ServicePermission);

在c＃中像php我没见过任何将json转换为对象的方法。要在c＃中进行转换，您必须先为此创建一个类。

对于你的情况，你可以这样做

//定义类

public class Response
{
    public bool flag { get; set; }
    public string message { get; set; }
    public Permisions result { get; set; }
}
public class Permisions
{
    public bool ServicePermission { get; set; }
    public bool UserGroupPermission { get; set; }
}


        var responseFromServer =
            // lines split for readability
  "{\"flag\":true,\"message\":\"\",\"result\":{\"ServicePermission\":true,"
  + "\"UserGroupPermission\":true}}";
        var serializer = new System.Web.Script.Serialization.JavaScriptSerializer();
        var responseValue = serializer.Deserialize<Response>(responseFromServer);

    //access     
    responseValue.result.ServicePermission

如何获取JSON String值？

2 个答案: