Question

我正在尝试在.NET Framework 4.0中创建一个web服务，以json格式返回一些数据。

以下是我的WebMethod代码

[WebMethod]
[ScriptMethod(ResponseFormat = ResponseFormat.Json)]
public string GetLobMonth(string month)
{
    JObject forecastResponse = new JObject();
    JObject probabilityResponse = new JObject();
    JObject response = new JObject();
    string revenue = String.Empty;
    String location = String.Empty;
    String probability = String.Empty;


        SqlConnection dbConnection = new SqlConnection(connection_string);
        if (dbConnection.State != System.Data.ConnectionState.Closed)
        {
            dbConnection.Close();
        }
        dbConnection.Open();

        SqlCommand sqlCommand = new SqlCommand(sqlQuery, dbConnection);

        var result = sqlCommand.ExecuteScalar();

        if (result != null)
        {
            using (SqlDataReader reader = sqlCommand.ExecuteReader())
            {
                while (reader.Read())
                {
                    //revenue = reader[0].ToString();
                    location = reader[1].ToString();

                    double figures = double.Parse(reader[0].ToString());
                    figures = Math.Round(figures, 2);
                    revenue = figures.ToString();

                    figures = double.Parse(reader[2].ToString());
                    figures = Math.Round(figures, 2);
                    probability = figures.ToString();

                    forecastResponse.Add(location, revenue);                            
                    probabilityResponse.Add(location, probability);

                }
            }
            dbConnection.Close();

            response["data1"] = forecastResponse;
            response["data2"] = probabilityResponse;

        }
        else
        {
            response.Add("error", "No records found");
        }

        var jsonResponse = JsonConvert.SerializeObject(response.ToString());
        return jsonResponse;

    }

}

服务以下列格式返回json中的数据： {"d": "\"{\\r\\n \\\"data1\\\": {\\r\\n \\\"region1\\\": \\\"value1\\\"},\\r\\n \\\"data2\\\": {\\r\\n \\\"region2\\\": \\\"value2\\\",\\r\\n}\\r\\n}\""}

为什么从d开始返回json数据，原始内容以字符串形式存储。

Answer 1

试试这个：

var jsonResponse = JsonConvert.SerializeObject(response.ToString(), Formatting.Indented);
response.Content = new StringContent(jsonResponse, Encoding.UTF8 , "application/json");

Answer 2

我通过从类中返回输出的传统方法解决了上述问题。

我为从db中返回的数据定义了一个类。存储了类中的数据，最后将该类作为对象返回。

这样我就能以正确的JSON格式获得响应。

webservice在json对象中将数据作为字符串返回

2 个答案: