如何通过 json 网络服务接受参数（包括图像）并将其存储到 SQL 服务器数据库中？

Question

我遇到一个错误：

Operation 'addUser' in contract 'IService1' has a UriTemplate that expects a parameter named 'PHONE_NO,DP,REG_ID', but there is no input parameter with that name on the operation.

我的代码：

public interface IService1
{
    [OperationContract]
    void DoWork();

    [OperationContract]
    [WebInvoke(Method = "POST", 
               ResponseFormat = WebMessageFormat.Json, 
               BodyStyle = WebMessageBodyStyle.Wrapped, 
               UriTemplate = "addUser/{phone_no,dp,reg_id}")]
    void addUser(String phone_no, String dp, String reg_id);
}

和addUser函数如下：

 public void addUser(String phone_no, String dp, String reg_id)
 {
        string conn = "";
        conn = ConfigurationManager.ConnectionStrings["Conn"].ToString();

        SqlConnection objsqlconn = new SqlConnection(conn);
        objsqlconn.Open();

        SqlDataAdapter da = new SqlDataAdapter();

        SqlCommand cmd = new SqlCommand("select * from dbo.User where phone_no in (" + phone_no + ")", objsqlconn);
        da.SelectCommand = cmd;
        DataSet ds = new DataSet();

        da.Fill(ds);
        objsqlconn.Close();

        if (ds.Tables[0].Rows.Count == 0)
        {
            objsqlconn.Open();

            SqlCommand cmd2 = new SqlCommand("insert into dbo.User(phone_no,dp,reg_id) values(@phone_no,@dp,@reg_id)", objsqlconn);
            da.SelectCommand = cmd2;
            DataSet dt = new DataSet();
            da.Fill(ds);
            objsqlconn.Close();
        }
   }

这里dp是图片谁能告诉我这是接受图片的正确方式吗？

Answer 1

你的服务可以是这样的

[ServiceContract]
public class TestService
{
    [OperationContract]
    [WebInvoke(Method = "POST", BodyStyle = WebMessageBodyStyle.Wrapped, UriTemplate = "/AddUser/{phoneNo}/{regId}")]
    public string AddUser(string phoneNo, String regId, Stream image)
    {
       //Read your stream here
       return phoneNo + " " + regId;
    }
}

您可以调用它：

using (var client = new HttpClient())
{
    var stream = new StreamContent(File.OpenRead(filename));
    var resp = await client.PostAsync("http://ip:port/TestService/AddUser/555111222/12345", stream);
    Console.WriteLine(resp.StatusCode.ToString());
}

如何通过 json 网络服务接受参数（包括图像）并将其存储到 SQL 服务器数据库中？

How to accept parameters (including images) through a json web service and store it into a SQL Server database?

.net

c#

sql-server

wcf

json