ios - 使用 Rest API Swift 3

Question

我在使用 SWIFT 3 时遇到一个问题。当我使用具有两个不同 URL 的 rest api 时，出于某种原因，此 URL“http://sistemas2.laprensa.com.ni/LaPrensa/api/Beacons”无法正常工作，而此 URL“https://app.ccn.com.ni:8080/BeerWayNicaragua/api/BusinessType”正在工作。我检查了 JSON，没问题。请帮助我了解问题所在。

没有工作

    let url = "http://sistemas2.laprensa.com.ni/LaPrensa/api/Beacons"
    let requestURL: URL = URL(string: url)!
    let urlRequest: NSMutableURLRequest = NSMutableURLRequest(url: requestURL)
    urlRequest.httpMethod = "GET"
    urlRequest.addValue("application/json; charset=UTF-8", forHTTPHeaderField: "Content-Type")
    urlRequest.addValue("application/json; charset=UTF-8", forHTTPHeaderField: "Accept")
    let task = URLSession.shared.dataTask(with: urlRequest as URLRequest) {data,response,error in

        if response != nil {
            let httpResponse = response as! HTTPURLResponse
            let statusCode = httpResponse.statusCode

            if (statusCode == 200) {

                do {
                    let json = try JSONSerialization.jsonObject(with: data!, options:.allowFragments)
                    callback((json as? [[String: AnyObject]])!)
                }catch {
                    print("Error with Json: \(error)")
                }
            }
        }
    }
    task.resume()

这是有效的，只是我更改了 URL。我不知道发生了什么。

    let url = "https://app.ccn.com.ni:8080/BeerWayNicaragua/api/BusinessType"
    let requestURL: URL = URL(string: url)!
    let urlRequest: NSMutableURLRequest = NSMutableURLRequest(url: requestURL)
    urlRequest.httpMethod = "GET"
    urlRequest.addValue("application/json; charset=UTF-8", forHTTPHeaderField: "Content-Type")
    urlRequest.addValue("application/json; charset=UTF-8", forHTTPHeaderField: "Accept")
    let task = URLSession.shared.dataTask(with: urlRequest as URLRequest) {data,response,error in

        if response != nil {
            let httpResponse = response as! HTTPURLResponse
            let statusCode = httpResponse.statusCode

            if (statusCode == 200) {

                do {
                    let json = try JSONSerialization.jsonObject(with: data!, options:.allowFragments)
                    callback((json as? [[String: AnyObject]])!)
                }catch {
                    print("Error with Json: \(error)")
                }
            }
        }
    }
    task.resume()

Answer 1

尝试发出请求时阅读控制台日志。你会注意到提示。

App Transport Security has blocked a cleartext HTTP (http://) resource load since it is insecure. Temporary exceptions can be configured via your app's Info.plist file.

解决方法如下

继续将以下键添加到您的 info.plist 文件中 vis source

<key>NSAppTransportSecurity</key>
<dict>
    <key>NSAllowsArbitraryLoads</key>
    <true/>
</dict>

或

来自 plist 编辑器。