用swift发送http请求
问题描述:
我想用swift发送一个http请求到PHP服务器。我管理发送数据,并阅读服务器的响应。我只是想根据请求类型是存在于JSON请求用swift发送http请求
这里我的PHP服务器上做不同的动作是我的发送请求的方法:
func sendHttpRequests(data : Dictionary<String, AnyObject>) //-> NSDictionary
{
let url = NSURL (string : "http://aaa.bbb.ccc.ddd")!
let request:NSMutableURLRequest = NSMutableURLRequest(URL : url)
let payload1 = "\"r\":\"login\""
request.HTTPMethod = "POST"
request.HTTPBody = payload1.dataUsingEncoding(NSUTF8StringEncoding);
NSURLConnection.sendAsynchronousRequest(request, queue: NSOperationQueue.mainQueue())
{
(response, data, error) in
if let httpResponse = response as? NSHTTPURLResponse {
let responseCode = httpResponse.statusCode
print("Request Status \(responseCode)")
}
do
{
let json = try NSJSONSerialization.JSONObjectWithData(data!, options: .AllowFragments)
print("Json received \(json)")
if let currItem = json["myKey"] as? String
{
print(currItem)
}
}
catch
{
print("error: \(error)")
}
}
}
当我刚刚发回一个响应此PHP剧本我得到回应成功:
<?php
$arr = array("myKey" => "myValue");
echo json_encode($arr);
?>
相反,当我尝试这样的事:
<?php
$postVar = $_POST['r'];
if (!empty($postVar))
{
$arr = array("status" => "it's ok");
echo json_encode($arr);
}
else
{
$arr = array("status" => "something wrong");
echo json_encode($arr);
}
?>
我得到这个错误:
Error Domain=NSCocoaErrorDomain Code=3840 "Invalid value around character 0." UserInfo={NSDebugDescription=Invalid value around character 0.}
答
马可,
不要使用NSMutableURLRequests,使用会话......前者是由苹果弃用。
下面是一个例子..
func getMetaData(lePath:String, completion: (string: String?, error: ErrorType?) -> Void) {
// **** get_metadata ****
let request = NSMutableURLRequest(URL: NSURL(string: "https://api.dropboxapi.com/2/files/get_metadata")!)
let session = NSURLSession.sharedSession()
request.HTTPMethod = "POST"
request.addValue("Bearer ab-blah", forHTTPHeaderField: "Authorization")
request.addValue("application/json",forHTTPHeaderField: "Content-Type")
request.addValue("path", forHTTPHeaderField: lePath)
let cursor:NSDictionary? = ["path":lePath]
do {
let jsonData = try NSJSONSerialization.dataWithJSONObject(cursor!, options: [])
request.HTTPBody = jsonData
print("json ",jsonData)
} catch {
print("snafoo alert")
}
let task = session.dataTaskWithRequest(request, completionHandler: {data, response, error -> Void in
if let error = error {
completion(string: nil, error: error)
return
}
let strData = NSString(data: data!, encoding: NSUTF8StringEncoding)
print("Body: \(strData)\n\n")
do {
let jsonResult = try NSJSONSerialization.JSONObjectWithData(data!, options:NSJSONReadingOptions.MutableContainers);
self.jsonParser(jsonResult,field2file: "ignore")
for (key, value) in self.parsedJson {
print("key2 \(key) value2 \(value)")
}
completion(string: "", error: nil)
} catch {
completion(string: nil, error: error)
}
})
task.resume()
}
答
马可,
我建议使用alamofire
看看这个例子
Alamofire.request(.GET, "https://httpbin.org/get", parameters: ["foo": "bar"])
.responseJSON { response in
print(response.request) // original URL request
print(response.response) // URL response
print(response.data) // server data
print(response.result) // result of response serialization
if let JSON = response.result.value {
print("JSON: \(JSON)")
}
}
很容易,序列化可以正常使用
您可以将它与pod一起安装在一行中。
lePath是什么? –
我只是用这个方法替换那个方法,但问题仍然存在 –
lePath是这个调用的一个参数,你可以忽略它。发布你的修改过的代码呢? – user3069232