需要帮助将参数从Swift发送到HTTP请求

Question

我只需要从Swift应用程序向SQL查询发送名称参数值。经过研究后，我发现我需要创建一个POST请求。

$ID = $_POST['customerName'];

$sql = "SELECT customer, rma, manufacturer, model, status FROM Equipment 
        WHERE customer = '$ID' ";

这是我目前在POST请求的PHP脚本中拥有的内容：

<?php


    // Create connection
$con=mysqli_connect("localhost","username","password","dbName");

// Check connection
if (mysqli_connect_errno())
{
  echo "Failed to connect to MySQL: " . mysqli_connect_error();
}

// This SQL statement selects ALL from the table 'Equipment'

$ID = $_POST['customerName'];

$sql = "SELECT customer, rma, manufacturer, model, status FROM Equipment 
        WHERE customer = '$ID' ";

// Check if there are results
if ($result = mysqli_query($con, $sql))
{
    // Create temporary connection
    $resultArray = array();
    $tempArray = array();

    // Look through each row
    while($row = $result->fetch_object())
    {
        // Add each row into our results array
        $tempArray = $row;
        array_push($resultArray, $tempArray);
    }

    // Finally, encode the array to JSON and output the results
    echo json_encode($resultArray);
}

mysqli_close($con);

?>

然后，我需要我的Swift应用程序发送显示正确数据所需的customerName值。下面，我尝试使用let参数：[String：Any] = [“ customerName”：“ Customer1”]，没有结果。.

func downloadItems() {
    let url = URL(string: "https://www.sample.com/test/test.php")!
    let defaultSession = Foundation.URLSession(configuration: URLSessionConfiguration.default)
    var request = URLRequest(url: url)
    request.setValue("application/json", forHTTPHeaderField: "Content-Type")
    request.httpMethod = "POST"
    let parameters: [String: Any] = ["customerName": "Customer1"]

    request.httpBody = parameters.percentEscaped().data(using: .utf8)

    let task = defaultSession.dataTask(with: url) { (data, response, error) in
        if error != nil {
            print("Error")
        }else {
            print("details downloaded")
            self.parseJSON(data!)
        }

    }

    task.resume()
}