Ios 在SWIFT中上载带有其他参数的图像

我想上传图像到服务器与其他参数使用SWIFT和服务器端脚本是在PHP。我正在发布接受以下参数的请求：

mer_名称-字符串

梅鲁电话串

mer_地址-字符串

液化天然气管柱

横向串

mer_许可证-文件类型

令牌串

mer_类型-字符串

每当我发出HTTP post请求时，它总是在响应中返回0值，这意味着“系统错误”。也许我做错了什么，有人能帮我看看我的代码吗

func uploadImage()
{
    let postPictureUrl = NSURL(string: "http://www.23look.com/merchant/verify")
    let request = NSMutableURLRequest(URL: postPictureUrl!)
    request.HTTPMethod="POST"

    let param=[
        "mer_name" : shopNameUITF.text!,
        "mer_tel" : shopTelephoneUITF.text!,
        "mer_address" : shopAddressUITF.text!,
        "lat" : "39.6892",
        "lng" : "115.9239",
        "token": KeychainWrapper.stringForKey("tokenValue")!,
        "mer_type": "smalll"
    ]

    let abc =  KeychainWrapper.stringForKey("tokenValue")!

    let boundary = generateBoundaryString()

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

    let imageData = UIImageJPEGRepresentation(myImageView.image!, 0.1)

    if imageData==nil { print("image data is nil"); return }

    request.HTTPBody = createBodyWithParameters(param, filePathKey: "mer_license", imageDataKey: imageData!, boundary: boundary)

    let task = NSURLSession.sharedSession().dataTaskWithRequest(request) {
        data, response, error in

        if error != nil {
            print("error=\(error)")
            return
        }

        //You can print out response object
        print("***** response = \(response)")

        // Print out reponse body
        let responseString = NSString(data: data!, encoding: NSUTF8StringEncoding)
        print("**** response data = \(responseString!)")

        do {

            let json = try NSJSONSerialization.JSONObjectWithData(data!, options: .MutableContainers) as? NSDictionary

            dispatch_async(dispatch_get_main_queue(), {
                print(NSString(data: data!, encoding:NSUTF8StringEncoding)!)
                print(json)
            })

        } catch let err {
            print(err)
        }
    }
    task.resume()
}

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

func createBodyWithParameters(parameters:[String:String]?, filePathKey: String?, imageDataKey:NSData, boundary: String) -> NSData {

    var body=NSMutableData()

    if parameters != nil {
        for(key, value) in parameters! {
            body.appendString("--\(boundary)\r\n")
            body.appendString("Content-Disposition: form-data; name=\"\(key)\"\r\n\r\n")
            body.appendString("\(value)\r\n")
        }
    }

    let filename = "user-profile.jpg"
    let mimetype = "image/jpg"

    body.appendString("--\(boundary)\r\n")
    body.appendString("Content-Disposition: form-data; name=\"\(filePathKey!)\"; filename=\"\(filename)\"\r\n")
    body.appendString("Content Type: \(mimetype)\r\n\r\n")
    body.appendData(imageDataKey)
    body.appendString("\r\n")

    body.appendString("--\(boundary)--\r\n")

    return body
}  extension NSMutableData {
func appendString(string: String) {
    let data = string.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: true)
    appendData(data!)
}

---

如果使用

appendData

而不是

appendString

来执行该操作，会怎么样

let body = NSMutableData()
let tempData = NSMutableData()
for (key, value) in parameters {
        tempData.appendData("--\(boundary)\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
        tempData.appendData("Content-Disposition: form-data; name=\"\(key)\"\r\n\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
        tempData.appendData("\(value!)\r\n".dataUsingEncoding(NSUTF8StringEncoding)!)
        // etc etc
    }

body.appendData(tempData)

request.setValue("\(body.length)", forHTTPHeaderField: "Content-Length")
request.HTTPBody = body

---

这不是服务器给出的响应吗？似乎与SWIFT无关您的最终边界不正确，它应该是

“--\（边界）-”

。（不需要CRLF）。请参见和。即使更改了最终边界，它也不起作用。我创建了一个扩展，如下所示，因此它应该可以工作：扩展NSMutableData{func appendString（string:string）{let data=string.dataUsingEncoding（NSUTF8StringEncoding，allowLossyConversion:true）appendData（data！）}是的，它起作用了。问题现在已经解决了，因为我在mer_许可证中将许可证拼错为许可证。