后端开发人员在POST请求中提供了这些说明：
在协议中没有第5号经验，我搜索并以我的代码结束。
-(id)initWithURLString:(NSString *)URLString withHTTPMEthod:(NSString *)method withHTTPBody:(NSDictionary *)body {
_URLString = URLString;
HTTPMethod = method;
HTTPBody = body;
//set error message
errorMessage = @"Can't connect to server at this moment. Try again later";
errorTitle = @"Connection Error";
return self;
}
-(void)fireConnectionRequest {
NSOperationQueue *mainQueue = [[NSOperationQueue alloc] init];
[mainQueue setMaxConcurrentOperationCount:5];
NSError *error = Nil;
NSURL *url = [NSURL URLWithString:_URLString];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url];
NSData *sendData = [NSJSONSerialization dataWithJSONObject:HTTPBody options:NSJSONWritingPrettyPrinted error:&error];
[request setHTTPMethod:@"POST"];
[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
[request setValue:@"application/json" forHTTPHeaderField:@"Accept"];
[request setHTTPBody: sendData];
[NSURLConnection connectionWithRequest:request delegate:self];
NSString *jsonString = [[NSString alloc]initWithData:sendData encoding:NSUTF8StringEncoding];
//fire URL connectiion request
[NSURLConnection sendAsynchronousRequest:request queue:mainQueue completionHandler:^(NSURLResponse *response, NSData *responseData, NSError *error) {
//get the return message and transform to dictionary
NSString *data = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
returnMessage = [NSJSONSerialization JSONObjectWithData: [data dataUsingEncoding:NSUTF8StringEncoding]
options: NSJSONReadingMutableContainers
error:&error];
//check return message
if (!error) {
[delegate returnMessageForTag:self.tag];
}
else {
[delegate returnErrorMessageForTag:self.tag];
}
}];
}
我传递一个格式化为JSON的字典。他同意我能够传递正确的数据。我能够连接到API，但是当我尝试发送数据进行注册时，它总是返回“FAILED”。连接没有问题，但我无法传输数据。
这里使用相同API的Android开发人员没有问题，但由于他不熟悉iOS，因此无法帮助我。
我错过了什么？
答案 0 :(得分：37)
尝试使用此代码
目标C
NSString *post =[NSString stringWithFormat:@"AgencyId=1&UserId=1&Type=1&Date=%@&Time=%@&Coords=%@&Image=h32979`7~U@)01123737373773&SeverityLevel=2",strDateLocal,strDateTime,dict];
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:@"%d",[postData length]];
NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
[request setURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://google/places"]]];
[request setHTTPMethod:@"POST"];
[request setValue:postLength forHTTPHeaderField:@"Content-Length"];
[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
[request setHTTPBody:postData];
NSError *error;
NSURLResponse *response;
NSData *urlData=[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
NSString *str=[[NSString alloc]initWithData:urlData encoding:NSUTF8StringEncoding];
Swift 2.2
var post = "AgencyId=1&UserId=1&Type=1&Date=\(strDateLocal)&Time=\(strDateTime)&Coords=\(dict)&Image=h32979`7~U@)01123737373773&SeverityLevel=2"
var postData = post.dataUsingEncoding(NSASCIIStringEncoding, allowLossyConversion: true)!
var postLength = "\(postData.length)"
var request = NSMutableURLRequest()
request.URL = NSURL(string: "http://google/places")!
request.HTTPMethod = "POST"
request.setValue(postLength, forHTTPHeaderField: "Content-Length")
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
request.HTTPBody = postData
NSError * error
NSURLResponse * response
var urlData = try! NSURLConnection.sendSynchronousRequest(request, returningResponse: response)!
var str = String(data: urlData, encoding: NSUTF8StringEncoding)
Swift 3.0
let jsonData = try? JSONSerialization.data(withJSONObject: kParameters)
let url: URL = URL(string: "Add Your API URL HERE")!
print(url)
var request: URLRequest = URLRequest(url: url)
request.httpMethod = "POST"
request.httpBody = jsonData
request.setValue(Constant.UserDefaults.object(forKey: "Authorization") as! String?, forHTTPHeaderField: "Authorization")
request.setValue(Constant.kAppContentType, forHTTPHeaderField: "Content-Type")
request.setValue(Constant.UserAgentFormat(), forHTTPHeaderField: "User-Agent")
let task = URLSession.shared.dataTask(with: request, completionHandler: { data, response, error in
if data != nil {
do {
let json = try JSONSerialization.jsonObject(with: data!, options: .allowFragments) as! NSDictionary
print(json)
} catch let error as NSError {
print(error)
}
} else {
let emptyDict = NSDictionary()
}
})
task.resume()
Swift 4
let headers = [
"Content-Type": "application/x-www-form-urlencoded"
]
let postData = NSMutableData(data: "UserID=351".data(using: String.Encoding.utf8)!)
let request = NSMutableURLRequest(url: NSURL(string: "Add Your URL Here")! as URL,
cachePolicy: .useProtocolCachePolicy,
timeoutInterval: 10.0)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers
request.httpBody = postData as Data
let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
if (error != nil) {
print(error!)
} else {
let httpResponse = response as? HTTPURLResponse
print(httpResponse!)
do {
let json = try JSONSerialization.jsonObject(with: data!, options: .allowFragments)
print(json)
} catch {
print(error)
}
}
})
dataTask.resume()
<强> Alamofire
Alamofire.request("Add Your URL Here",method: .post, parameters: ["CategoryId": "15"])
.validate(contentType: ["application/x-www-form-urlencoded"])
.responseJSON { (response) in
print(response.result.value)
}
我希望这段代码对你有用。
答案 1 :(得分：7)
@fatihyildizhan
没有足够的声誉直接评论你的答案，因此这个答案。
Swift 1.2
let myParams = "username=user1&password=12345"
let postData = myParams.dataUsingEncoding(NSASCIIStringEncoding, allowLossyConversion: true)
let postLength = String(format: "%d", postData!.length)
var myRequest = NSMutableURLRequest(URL: self.url)
myRequest.HTTPMethod = "POST"
myRequest.setValue(postLength, forHTTPHeaderField: "Content-Length")
myRequest.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
myRequest.HTTPBody = postData
var response: AutoreleasingUnsafeMutablePointer<NSURLResponse?> = nil
以上代码在我的情况下运行正常。
答案 2 :(得分：4)
快捷键4
let params = ["password":873311,"username":"jadon","client_id":"a793fb82-c978-11e9-a32f-2a2ae2dbcce4"]
let jsonString = params.reduce("") { "\($0)\($1.0)=\($1.1)&" }
let jsonData = jsonString.data(using: .utf8, allowLossyConversion: false)!
urlRequest.addValue("application/x-www-form-urlencoded", forHTTPHeaderField:"Content-Type")
urlRequest.httpBody = jsonData
答案 3 :(得分：3)
使用Swift 3，让jsonData =试试？ JSONSerialization.data（withJSONObject：kParameters）对我不起作用，所以我不得不复制AlamoFire解决方案......
let body2 = ["username": "au@gmail.com",
"password": "111",
"client_secret":"7E",
"grant_type":"password"]
let data : Data = query(body2).data(using: .utf8, allowLossyConversion: false)!
var request : URLRequest = URLRequest(url: url)
request.httpMethod = "POST"
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField:"Content-Type");
request.setValue(NSLocalizedString("lang", comment: ""), forHTTPHeaderField:"Accept-Language");
request.httpBody = data
do {...}
}
public func queryComponents(fromKey key: String, value: Any) -> [(String, String)] {
var components: [(String, String)] = []
if let dictionary = value as? [String: Any] {
for (nestedKey, value) in dictionary {
components += queryComponents(fromKey: "\(key)[\(nestedKey)]", value: value)
}
} else if let array = value as? [Any] {
for value in array {
components += queryComponents(fromKey: "\(key)[]", value: value)
}
} else if let value = value as? NSNumber {
if value.isBool {
components.append((escape(key), escape((value.boolValue ? "1" : "0"))))
} else {
components.append((escape(key), escape("\(value)")))
}
} else if let bool = value as? Bool {
components.append((escape(key), escape((bool ? "1" : "0"))))
} else {
components.append((escape(key), escape("\(value)")))
}
return components
}
public func escape(_ string: String) -> String {
let generalDelimitersToEncode = ":#[]@" // does not include "?" or "/" due to RFC 3986 - Section 3.4
let subDelimitersToEncode = "!$&'()*+,;="
var allowedCharacterSet = CharacterSet.urlQueryAllowed
allowedCharacterSet.remove(charactersIn: "\(generalDelimitersToEncode)\(subDelimitersToEncode)")
var escaped = ""
if #available(iOS 8.3, *) {
escaped = string.addingPercentEncoding(withAllowedCharacters: allowedCharacterSet) ?? string
} else {
let batchSize = 50
var index = string.startIndex
while index != string.endIndex {
let startIndex = index
let endIndex = string.index(index, offsetBy: batchSize, limitedBy: string.endIndex) ?? string.endIndex
let range = startIndex..<endIndex
let substring = string.substring(with: range)
escaped += substring.addingPercentEncoding(withAllowedCharacters: allowedCharacterSet) ?? substring
index = endIndex
}
}
return escaped
}
还有一个扩展名：
extension NSNumber {
fileprivate var isBool: Bool { return CFBooleanGetTypeID() == CFGetTypeID(self) }}
这是暂时的，它必须是更好的解决方案......
希望有所帮助...
答案 4 :(得分：1)
Swift确实提供了用于URL％编码的功能，但是与@nolanw在第一条注释中指出的不完全匹配。对于原始问题的第5步，一旦您具有某种结构的键值对，以下是一种简短而简单的编码替代方法（Swift 4.2）：
var urlParser = URLComponents()
urlParser.queryItems = [
URLQueryItem(name: "name", value: "Tim Tebow"),
URLQueryItem(name: "desc", value: "Gators' QB")
]
let httpBodyString = urlParser.percentEncodedQuery
将其粘贴到Xcode游乐场中，然后添加print(httpBodyString!)。在输出中，您将看到：
name=Tim%20Tebow&desc=Gators'%20QB
注意：这是用于百分比编码的基本表单值集（即不是二进制数据也不是多部分）
答案 5 :(得分：0)
是否可以将此代码转换为swift？我已经尝试但无法处理它。也许这个代码块可以帮助你。感谢。
let myParams:NSString = "username=user1&password=12345"
let myParamsNSData:NSData = NSData(base64EncodedString: myParams, options: NSDataBase64DecodingOptions.IgnoreUnknownCharacters)!
let myParamsLength:NSString = NSString(UTF8String: myParamsNSData.length)
let myRequest: NSMutableURLRequest = NSURL(fileURLWithPath: self.url)
myRequest.HTTPMethod = "POST"
myRequest.addValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
myRequest.HTTPBody = myParamsNSData
var data2: NSData!
var error2: NSError!
答案 6 :(得分：0)
Swift 4.2
func percentEscapeString(_ string: String) -> String {
var characterSet = CharacterSet.alphanumerics
characterSet.insert(charactersIn: "-._* ")
return string
.addingPercentEncoding(withAllowedCharacters: characterSet)!
.replacingOccurrences(of: " ", with: " ")
.replacingOccurrences(of: " ", with: " ", options: [], range: nil)
.replacingOccurrences(of: "\"", with: "", options: NSString.CompareOptions.literal, range:nil)
}
// Set encoded values to Dict values you can decode keys if required
dictData.forEach { (key, value) in
if let val = value as? String {
dictData[key] = self.percentEscapeString(val)
} else {
dictData[key] = value
}
}
这对我有用，这是来源https://gist.github.com/HomerJSimpson/80c95f0424b8e9718a40
的链接答案 7 :(得分：0)
将字典参数解析为字符串：
-(NSData *)encodeParameters:(NSDictionary *)parameters {
NSMutableArray *list = [NSMutableArray new];
for (NSString *key in [parameters allKeys]) {
id obj = [parameters objectForKey:key];
NSString *path = [NSString stringWithFormat:@"%@=%@", key, obj];
[list addObject:path];
}
return [[list componentsJoinedByString:@"&"] dataUsingEncoding:NSUTF8StringEncoding];
}
并使用它：
[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
[request setHTTPMethod:@"POST"];
[request setHTTPBody:[self encodeParameters:parameters]];
答案 8 :(得分：0)
此版本处理参数编码并以'+'代替空格。
extension String {
static let formUrlencodedAllowedCharacters =
CharacterSet(charactersIn: "0123456789" +
"abcdefghijklmnopqrstuvwxyz" +
"ABCDEFGHIJKLMNOPQRSTUVWXYZ" +
"-._* ")
public func formUrlencoded() -> String {
let encoded = addingPercentEncoding(withAllowedCharacters: String.formUrlencodedAllowedCharacters)
return encoded?.replacingOccurrences(of: " ", with: "+") ?? ""
}
}
class HTTPUtils {
public class func formUrlencode(_ values: [String: String]) -> String {
return values.map { key, value in
return "\(key.formUrlencoded())=\(value.formUrlencoded())"
}.joined(separator: "&")
}
}
let headers = [
"content-type": "application/x-www-form-urlencoded; charset=utf-8"
]
let body = HTTPUtils.formUrlencode([
"field": "value"
])
var request = try URLRequest(url: url, method: .post, headers: headers)
request.httpBody = body.data(using: .utf8)
URLSession.shared.dataTask(with: request, completionHandler: { ... }).resume()
答案 9 :(得分：0)
从 Swift 5 开始，以下代码已经过测试今天可以工作。
let url = URL(string: "https://something")
var request = URLRequest(url: url!)
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
request.httpMethod = "POST"
let post = "parameter1=abc¶meter2=abc"
let postData = post.data(using: String.Encoding.ascii, allowLossyConversion: true)!
request.httpBody = postData
答案 10 :(得分：-1)
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="https://openlayers.org/en/v4.0.1/css/ol.css" type="text/css">
<style>
.map {
height: 400px;
width: 100%;
}
body {font-family: "Lato", sans-serif;}
/* Style the tab */
div.tab {
overflow: hidden;
border: 1px solid #ccc;
background-color: #f1f1f1;
}
/* Style the buttons inside the tab */
div.tab button {
background-color: inherit;
float: left;
border: none;
outline: none;
cursor: pointer;
padding: 14px 16px;
transition: 0.3s;
font-size: 17px;
}
/* Change background color of buttons on hover */
div.tab button:hover {
background-color: #ddd;
}
/* Create an active/current tablink class */
div.tab button.active {
background-color: #ccc;
}
/* Style the tab content */
.tabcontent {
display: none;
padding: 6px 12px;
border: 1px solid #ccc;
border-top: none;
}
/* Style the close button */
.topright {
float: right;
cursor: pointer;
font-size: 20px;
}
.topright:hover {color: red;}
</style>
</head>
<body>
<p>Click on the x button in the top right corner to close the current tab:</p>
<div class="tab">
<button class="tablinks" onclick="openCity(event, 'London')" id="defaultOpen">London</button>
<button class="tablinks" onclick="openCity(event, 'Paris')">Paris</button>
<button class="tablinks" onclick="openCity(event, 'Tokyo')">Tokyo</button>
</div>
<div id="London" class="tabcontent">
<span onclick="this.parentElement.style.display='none'" class="topright">x</span>
<h3>London</h3>
<p>London is the capital city of England.</p>
</div>
<div id="Paris" class="tabcontent">
<span onclick="this.parentElement.style.display='none'" class="topright">x</span>
<h3>Paris</h3>
<p>Paris is the capital of France.</p>
<div id="map" class="map"></div>
</div>
<div id="Tokyo" class="tabcontent">
<span onclick="this.parentElement.style.display='none'" class="topright">x</span>
<h3>Tokyo</h3>
<p>Tokyo is the capital of Japan.</p>
</div>
<script src="https://openlayers.org/en/v4.0.1/build/ol.js" type="text/javascript"></script>
<script>
function openCity(evt, cityName) {
var i, tabcontent, tablinks;
tabcontent = document.getElementsByClassName("tabcontent");
for (i = 0; i < tabcontent.length; i++) {
tabcontent[i].style.display = "none";
}
tablinks = document.getElementsByClassName("tablinks");
for (i = 0; i < tablinks.length; i++) {
tablinks[i].className = tablinks[i].className.replace(" active", "");
}
document.getElementById(cityName).style.display = "block";
evt.currentTarget.className += " active";
}
// Get the element with id="defaultOpen" and click on it
document.getElementById("defaultOpen").click();
var map = new ol.Map({
target: 'map',
layers: [
new ol.layer.Tile({
source: new ol.source.OSM()
})
],
view: new ol.View({
center: ol.proj.fromLonLat([37.41, 8.82]),
zoom: 4
})
});
</script>
</body>
</html>扩展词典
let params:[String: Any]
if "application/x-www-form-urlencoded" {
let bodyData = params.stringFromHttpParameters()
self.request.httpBody = bodyData.data(using: String.Encoding.utf8)}
if "application/json"{
do {
self.request.httpBody = try JSONSerialization.data(withJSONObject: params, options: JSONSerialization.WritingOptions())
} catch {
print("bad things happened")
}
}