【问题标题】:unable to show a record on fiddler无法在提琴手上显示记录
【发布时间】:2015-12-01 06:28:03
【问题描述】:

我创建了一个使用 ASP.net 和 C# 连接到外部 SQL Server 2012 的 Web api。我的连接字符串是 myConnection.ConnectionString = "Data Source=./PALLAVI-PC/SQLEXPRESS;Initial Catalog=StudentDB;Integrated Security=True;MultipleActiveResultSets=True;Application Name=EntityFramework";

代码中似乎没有错误。但是当我部署服务并尝试在提琴手上提取记录时,我收到 404 错误。 GET 网址是localhost:xxxxx/api/student/1

我在下面发布代码:

StudentController.cs

   //api/student/id
    [HttpGet]
     [ActionName("GetStudentByID")]
    public Student Get(int id)
    {
        //SQL Reader
        SqlDataReader reader = null;

        //SQL Connection class
        SqlConnection myConnection = new SqlConnection();

        //creating the connection string            
        myConnection.ConnectionString = "Data Source=./PALLAVI-PC/SQLEXPRESS;Initial Catalog=StudentDB;Integrated Security=True;MultipleActiveResultSets=True;Application Name=EntityFramework";

        //SQL Commands class
        SqlCommand sqlCmd = new SqlCommand();
        sqlCmd.CommandType = System.Data.CommandType.Text;

        //sql query
        sqlCmd.CommandText = "Select * from Students where Roll_Number=" + id + ";";

        sqlCmd.Connection = myConnection;

        //opening the connection
        myConnection.Open();

        //extracting the record
        reader = sqlCmd.ExecuteReader();

        //object of class student
        Student myStudent = null;

        while (reader.Read())
        {
            myStudent = new Student();
            myStudent.Roll_Number = Convert.ToInt32(reader.GetValue(0));
            myStudent.FirstName = reader.GetValue(1).ToString();
            myStudent.LastName = reader.GetValue(2).ToString();
            myStudent.Class = Convert.ToInt32(reader.GetValue(3));
            myStudent.Gender = reader.GetValue(4).ToString();
        }

        return myStudent;

        //close connection
        myConnection.Close();


    }

如果我在连接字符串中将斜杠更改为正向,我会收到错误unrecognized character

【问题讨论】:

  • 尝试访问localhost:xxxxx/api/student/Get/1localhost:xxxxx/api/student/GetStudentByID/1
  • 您的 404 错误与数据库连接(或连接字符串)无关,因此请先关注为什么您的 URL 无法解析为任何内容。检查 IIS 设置以确保您的站点映射到包含您的代码的正确目录。检查绑定以确保您的端口使用正确。也许尝试在每个目录中放置一些示例 html 文件,以便在查看 web api 方法之前让您了解是否可以正确请求这些文件。另外,请检查您的请求是否也使用 http 和 https。同样,您的 IIS 设置在这里会有所帮助。

标签: c# asp.net rest asp.net-web-api2 fiddler


【解决方案1】:

将您的连接字符串更改为 myConnection.ConnectionString = @"Data Source=PALLAVI-PC\SQLEXPRESS;Initial Catalog=StudentDB;Integrated Security=True;MultipleActiveResultSets=True;Application Name=EntityFramework";

【讨论】:

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