如何使用Swift 2.0在Parse.com（REST API）中上传和关联图像

Question

I am trying to associate an image or a file with an object in Parse.com using the REST API. The Parse.com REST API Doc is quite vague, it talks about first how to upload which is fine, and then how to associate. The only issue is that it doesn't show how to associate with a User table , only an Object table , so when I tried to associate with a user, it asked for a username and password, and the response is as if it tries to create a new user . When I tried to associate with a regular table Company , it create a new entry. Any help would welcome, this is the code I have so far.

This is the code to upload a file to Parse.com with REST

    let baseURL = NSURL(string: self.baseURL)
    let url = NSURL(string: "/1/files/pic.jpg", relativeToURL: baseURL)

    let request = NSMutableURLRequest()
    request.HTTPMethod = "\(HTTPMethod.POST)"
    request.addValue(appID, forHTTPHeaderField:  "X-Parse-Application-Id")
    request.addValue(apiKey, forHTTPHeaderField: "X-Parse-REST-API-Key")
    request.addValue("image/jpeg", forHTTPHeaderField: "Content-Type")

    let image = UIImage(named: "empAvatar")

    let imageData = UIImageJPEGRepresentation(image!, 0.9)
    let base64String = imageData!.base64EncodedStringWithOptions(NSDataBase64EncodingOptions(rawValue: 0))

    let param = ["userProfile":base64String]

    do{
        request.HTTPBody = try NSJSONSerialization.dataWithJSONObject(param, options: .PrettyPrinted)
    } catch {
        print("ERROR: HTTP Body JSON")
    }

    request.URL = url
    let session = NSURLSession.sharedSession()
    let task = session.dataTaskWithRequest(request) {
        data, response, error in
        do {
            let imageDic = try NSJSONSerialization.JSONObjectWithData(data!, options: []) as! [String:AnyObject]
            print("DATA: \(imageDic)")
        } catch {

        }
    }
    task.resume()

This is the code to associate a file with a user/object

let baseURL = NSURL(string: self.baseURL)
    let url = NSURL(string: "/1/users/", relativeToURL: baseURL)

    let request = NSMutableURLRequest()
    request.HTTPMethod = "\(HTTPMethod.POST)"
    request.addValue(appID, forHTTPHeaderField:  "X-Parse-Application-Id")
    request.addValue(apiKey, forHTTPHeaderField: "X-Parse-REST-API-Key")
    request.addValue("application/json", forHTTPHeaderField: "Content-Type")


   let param = ["name":"John", "picture":["name":"tfss-127e50c4-be6e-4228-b1a3-3f253358ac-pic.jpg","__type":"File"]]


    do{
        request.HTTPBody = try NSJSONSerialization.dataWithJSONObject(param, options: .PrettyPrinted)
    } catch {
        print("ERROR: HTTP Body JSON")
    }

    request.URL = url
    let session = NSURLSession.sharedSession()
    let task = session.dataTaskWithRequest(request) {
        data, response, error in
        do {
            let imageDic = try NSJSONSerialization.JSONObjectWithData(data!, options: []) as! [String:AnyObject]
            print("DATA: \(imageDic)")
        } catch {

        }
    }
    task.resume()

With the URL, I also tried:

 let url = NSURL(string: "/1/class/Company/", relativeToURL: baseURL)

And it just created a new entry.

Thanks you!

Answer 1

POST请求将创建新的条目尝试使用PUT方法。