使用Ajax Jquery和asmx服务获取Id的数据

Question

我想通过Id获取所选的员工数据，因此会弹出一个模态并显示此Id的数据。 Id作为参数进行解析，但asmx服务最终不会触发。这是客户端代码：

 function getEmployeebyID(Id) {
        $("#ModalTitle").html("Update Employee");
        $("#MyModal").modal();
        var Id = Id;

        $.ajax({
            url: "EmployeeService.asmx/GetEmployeeById",
            type: "GET",              

            dataType: "json",
            data: { Id: Id },
            success: function (data) {


                $('#txtFirstName').val(data[0].FirstName);
                $('#txtLastName').val(data[0].LastName);
                $('#txtGender').val(data[0].Gender);
                $('#txtJobTitle').val(data[0].JobTitle);
                $('#txtSalary').val(data[0].Salary);
                $('#txtHireDate').val(data[0].HireDate);


            },
            error: function (errormessage) {
                alert(errormessage.responseText);
            }
        });
        return false;
    }

这是服务器端代码：

[WebMethod]

    public void GetEmployeeById(int Id)  
    {
        Employee employee = new Employee();

        string cs = ConfigurationManager.ConnectionStrings["DefaultConnection"].ConnectionString;
        using (SqlConnection con = new SqlConnection(cs))
        {
            SqlCommand cmd = new SqlCommand("spGetEmployeeById", con);
            cmd.CommandType = CommandType.StoredProcedure;

            SqlParameter parameter = new SqlParameter();
            parameter.ParameterName = "@Id";
            parameter.Value = Id;

            cmd.Parameters.Add(parameter);
            con.Open();
            SqlDataReader rdr = cmd.ExecuteReader();
            while (rdr.Read())
            {
                employee.Id = Convert.ToInt32(rdr["Id"]);
                employee.FirstName = rdr["FirstName"].ToString();
                employee.LastName = rdr["LastName"].ToString();
                employee.Gender = rdr["Gender"].ToString();
                employee.JobTitle = rdr["JobTitle"].ToString();
                employee.Salary = Convert.ToInt32(rdr["Salary"]);
                employee.HireDate = Convert.ToDateTime(rdr["HireDate"]);
            }
        }

        JavaScriptSerializer js = new JavaScriptSerializer();
        Context.Response.Write(js.Serialize(employee));
    }

服务器端代码在我运行时调用数据时工作，因此问题出在客户端并抛出：请求格式无法识别，因为url意外地以/ GetEmployeeById结尾。就我检查的元素而言，我看到了这个错误：localhost： 50791 / Services / EmployeeService.asmx / GetEmployeeById？Id = 42 500（内部服务器错误）。无法弄清楚发生了什么......

Answer 1

试试这个

 function getEmployeebyID(Id) {
        $("#ModalTitle").html("Update Employee");
        $("#MyModal").modal();
    var Emp={
    Id = Id
    }
        $.ajax({
            url: "../EmployeeService.asmx/GetEmployeeById",
            type: "POST",              
            contentType : "application/json; charset=utf-8",     
            dataType: "json",
            data: JSON.stringify(Emp),
            success: function (data) {


                $('#txtFirstName').val(data[0].FirstName);
                $('#txtLastName').val(data[0].LastName);
                $('#txtGender').val(data[0].Gender);
                $('#txtJobTitle').val(data[0].JobTitle);
                $('#txtSalary').val(data[0].Salary);
                $('#txtHireDate').val(data[0].HireDate);


            },
            error: function (errormessage) {
                alert(errormessage.responseText);
            }
        });
        return false;
    }

Answer 2

最后从这个How do I fix a "Request format is unrecognized for URL..." error in a web service running in IIS?我添加到web.config：

 <webServices>
  <protocols>
    <add name="HttpGet"/>
    <add name="HttpPost"/>
  </protocols>
</webServices>

并从中删除

 $('#txtFirstName').val(data[0].FirstName);

[0]和所有工作正常。