Question

我尝试使用REST API将UIImage上传到网络服务器，我收到500错误。 swift代码或php代码有什么问题吗？我在网络服务器上找不到任何错误。

func UploadRequest(image: UIImage)
    {
        let url = NSURL(string: "https://server-to-upload-file.com")

        let request = NSMutableURLRequest(url: url! as URL)
        request.httpMethod = "POST"

        let boundary = generateBoundaryString()

        //define the multipart request type

        request.setValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type")

        if (image == nil)
        {
            return
        }

        let image_data = UIImageJPEGRepresentation(image, 1)


        if(image_data == nil)
        {
            return
        }


        let body = NSMutableData()

        let fname = "test.png"
        let mimetype = "image/png"

        //define the data post parameter

        body.append("--\(boundary)\r\n".data(using: String.Encoding.utf8)!)
        body.append("Content-Disposition:form-data; name=\"test\"\r\n\r\n".data(using: String.Encoding.utf8)!)
        body.append("hi\r\n".data(using: String.Encoding.utf8)!)



        body.append("--\(boundary)\r\n".data(using: String.Encoding.utf8)!)
        body.append("Content-Disposition:form-data; name=\"file\"; filename=\"\(fname)\"\r\n".data(using: String.Encoding.utf8)!)
        body.append("Content-Type: \(mimetype)\r\n\r\n".data(using: String.Encoding.utf8)!)
        body.append(image_data!)
        body.append("\r\n".data(using: String.Encoding.utf8)!)


        body.append("--\(boundary)--\r\n".data(using: String.Encoding.utf8)!)



        request.httpBody = body as Data



        let session = URLSession.shared


        let task = session.dataTask(with: request as URLRequest) {
            (
            data, response, error) in

            guard let _:NSData = data as NSData?, let _:URLResponse = response  , error == nil else {
                print("error")
                return
            }

            let dataString = NSString(data: data!, encoding: String.Encoding.utf8.rawValue)
            print(dataString)

        }

        task.resume()


    }


    func generateBoundaryString() -> String
    {
        return "Boundary-\(NSUUID().uuidString)"
    }

Answer 1

错误代码500是服务器错误。基本上，服务器代码中的任何异常都会产生此代码我试图说你的服务器代码是正确的，并且因为从iOS设备发送错误的数据而崩溃，或者你正在以正确的格式发送数据，但你的服务器没有正确接收它。

您应该阅读服务器的错误日志以了解更多信息。

使用REST API快速上传图像

1 个答案: