iOS api 调用本地 RESTful Django 失败
<p><p>大家好，第一次发帖。很长一段时间以来都从其他问题中受益，所以我想在此开头感谢所有在这里回答问题的人。</p>
<p>关于我的问题。所以我设置了一个本地 Django 服务器，可以正确地将 JSON 对象返回到我的浏览器。我还在 IOS 中使用 swift 设置了一个 API 查询方案，可以与教程 HTTP 服务器一起正常工作。但是，当我尝试调用自己的本地服务器时，我的数据和响应对象为零</p>
<p>我的 Django view.py 和 url.py 文件</p>
<pre><code>from rest_framework import status
from rest_framework.views import APIView
from rest_framework.response import Response
from snippets.models import Snippet
from django.http import Http404
from snippets.serializers import SnippetSerializer
class SnippetList(APIView):
"""
List all snippets, or create a new snippet.
"""
def get(self, request, format=None):
snippets = Snippet.objects.all()
serializer = SnippetSerializer(snippets, many=True)
return Response(serializer.data)
def post(self, request, format=None):
serializer = SnippetSerializer(data=request.data)
if serializer.is_valid():
serializer.save()
return Response(serializer.data, status=status.HTTP_201_CREATED)
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
class SnippetDetail(APIView):
"""
Retrieve, update or delete a snippet instance.
"""
def get_object(self, pk):
try:
return Snippet.objects.get(pk=pk)
except Snippet.DoesNotExist:
raise Http404
def get(self, request, pk, format=None):
snippet = self.get_object(pk)
serializer = SnippetSerializer(snippet)
return Response(serializer.data)
def put(self, request, pk, format=None):
snippet = self.get_object(pk)
serializer = SnippetSerializer(snippet, data=request.data)
if serializer.is_valid():
serializer.save()
return Response(serializer.data)
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
def delete(self, request, pk, format=None):
snippet = self.get_object(pk)
snippet.delete()
return Response(status=status.HTTP_204_NO_CONTENT)
</code></pre>
<p>我的 iOS API 文件</p>
<pre><code>import Foundation
import SwiftyJSON
typealias ServiceResponse = (JSON, NSError?) -> Void
class RestApiManager: NSObject {
static let sharedInstance = RestApiManager()
let baseURL = "http://127.0.0.1:8000/snippets/?format=json"
func getRandomUser(onCompletion: (JSON) -> Void) {
let route = baseURL
makeHTTPGetRequest(route, onCompletion: { json, err in
onCompletion(json as JSON)
})
}
func makeHTTPGetRequest(path: String, onCompletion: ServiceResponse) {
let request = NSMutableURLRequest(URL: NSURL(string: path)!)
let session = NSURLSession.sharedSession()
let task = session.dataTaskWithRequest(request, completionHandler: {data, response, error -> Void in
print(data)
print(response)
print(error)
print("list")
let json:JSON = JSON(data: data!)
onCompletion(json, error)
})
task.resume()
}
</code></pre>
<p>动态添加表格行的我的 ViewController </p>
<pre><code>import UIKit
import MapKit
import CoreLocation
import SwiftyJSON
class TableMenu: UIViewController, UITableViewDataSource, UITableViewDelegate {
var tableView:UITableView?
var items = NSMutableArray()
override func viewWillAppear(animated: Bool) {
let frame:CGRect = CGRect(x: 0, y: 100, width: self.view.frame.width, height: self.view.frame.height-100)
self.tableView = UITableView(frame: frame)
self.tableView?.dataSource = self
self.tableView?.delegate = self
self.view.addSubview(self.tableView!)
let btn = UIButton(frame: CGRect(x: 0, y: 25, width: self.view.frame.width, height: 50))
btn.backgroundColor = UIColor.cyanColor()
btn.setTitle("Add new Dummy", forState: UIControlState.Normal)
btn.addTarget(self, action: #selector(TableMenu.addDummyData), forControlEvents: UIControlEvents.TouchUpInside)
self.view.addSubview(btn)
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.items.count;
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
var cell = tableView.dequeueReusableCellWithIdentifier("CELL") as UITableViewCell!
if cell == nil {
cell = UITableViewCell(style: UITableViewCellStyle.Value1, reuseIdentifier: "CELL")
}
let user:JSON =JSON(self.items)
print(user)
//let picURL = user["picture"]["medium"].string
//print(picURL)
//let url = NSURL(string: picURL!)
//let data = NSData(contentsOfURL: url!)
//print(user)
cell!.textLabel?.text = user.string //user["username"].string
// cell?.imageView?.image = UIImage(data: data!)
return cell!
}
func addDummyData() {
RestApiManager.sharedInstance.getRandomUser { json in
let results = json.array
for Json: JSON in results! {
let user: AnyObject = Json["id"].string!
print(user)
self.items.addObject(user)
dispatch_async(dispatch_get_main_queue(),{
self.tableView?.reloadData()
})
}
}
}
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
}
*/
}
</code></pre>
<p>当我从我得到的 dataTaskWithRequest 方法中打印出错误对象时得到的错误</p>
<pre><code>Optional(Error Domain=NSURLErrorDomain Code=-1004 "Could not connect to the server." UserInfo={NSUnderlyingError=0x12dd99a50 {Error Domain=kCFErrorDomainCFNetwork Code=-1004 "(null)" UserInfo={_kCFStreamErrorCodeKey=61, _kCFStreamErrorDomainKey=1}}, NSErrorFailingURLStringKey=http://127.0.0.1:8000/snippets/?format=json, NSErrorFailingURLKey=http://127.0.0.1:8000/snippets/?format=json, _kCFStreamErrorDomainKey=1, _kCFStreamErrorCodeKey=61, NSLocalizedDescription=Could not connect to the server.})
</code></pre>
<p>我在这里看了一段时间来寻找答案，但一切都是关于身份验证的，我认为 id 首先让两者进行通信，然后再为用户提供需要身份验证才能访问的特定数据库</p>
<p>感谢您的宝贵时间。</p>
<p>请批评我的 stack-overflow 礼仪，以便我 future 的问题得到肯定。</p>
<p>祝大家好运</p>
<p>编辑我的 info.plist 如下所示
<a href="/image/CNDJ2.png" rel="noreferrer noopener nofollow">info.plist</a> </p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>作为应用传输安全性的一部分，Apple 已禁用来自 iOS 应用的所有不安全 HTTP 流量。这有助于实现安全最佳实践。</p>
<p>如果您尝试在启用 ATS 的情况下发出 HTTP 请求(使用 NSURLSession 或 AFNetworking 之类的库)，您将遇到错误。</p>
<p><strong>解决方案:-</strong></p>
<p>打开 Info.plist，并添加以下行:</p>
<pre><code><key>NSAppTransportSecurity</key>
<dict>
<key>NSAllowsArbitraryLoads</key>
<true/>
</dict>
</code></pre>
<p><strong>注意:-</strong></p>
<p>请记住，上述解决方案应该是您最后的手段。理想情况下，您希望在您的服务上启用 HTTPS，或者接下来，将您希望使用 HTTP 的域列入白名单，如果这些都不可行，请使用此方法</p>
<p>有关更多信息，请参阅此链接:
<a href="http://www.neglectedpotential.com/2015/06/working-with-apples-application-transport-security/" rel="noreferrer noopener nofollow">http://www.neglectedpotential.com/2015/06/working-with-apples-application-transport-security/</a> </p></p>
<p style="font-size: 20px;">关于iOS api 调用本地 RESTful Django 失败，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/40195403/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/40195403/
</a>
</p>
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