默认情况下，Alamofire使用POST正文中的“参数列表”对参数进行编码。尝试将编码更改为
JSON。这样，Alamofire可以按您期望的那样将字典序列化为JSON字符串：
let parameters = [ "foo": [1,2,3], "bar": [ "baz": "qux" ]]Alamofire.request(.POST, "http://httpbin.org/post", parameters: parameters, encoding: .JSON)// HTTP body: {"foo": [1, 2, 3], "bar": {"baz": "qux"}}或使用您的代码：
let string = "duke"let jsonObject = ["$and":[["name":["$bw":string], "country":"gb"]]]let json = JSON(jsonObject)let params = ["filters" : json.rawValue, "limit":"1", "KEY":"my_key"]Alamofire.request(.POST, "http://httpbin.org/post", parameters: params, encoding: .JSON) .responseString(encoding: NSUTF8StringEncoding) { request, response, content, error in NSLog("Request: %@ - %@n%@", request.HTTPMethod!, request.URL!, request.HTTPBody.map { body in NSString(data: body, encoding: NSUTF8StringEncoding) ?? "" } ?? "") if let response = response { NSLog("Response: %@n%@", response, content ?? "") }}获取输出：
Request: POST - http://httpbin.org/post{"filters":{"$and":[{"name":{"$bw":"duke"},"country":"gb"}]},"limit":"1","KEY":"my_key"}编辑：GET参数中的URL编码的JSON
如果要在GET参数中发送URL编码的JSON，则必须首先生成JSON字符串，然后将其作为字符串传递到参数字典中：
SWIFT 1
let string = "duke"let jsonObject = ["$and":[["name":["$bw":string], "country":"gb"]]]let json = JSON(jsonObject)// Generate the string representation of the JSON valuelet jsonString = json.rawString(encoding: NSUTF8StringEncoding, options: nil)!let params = ["filters" : jsonString, "limit": "1", "KEY": "my_key"]Alamofire.request(.GET, "http://httpbin.org/post", parameters: params) .responseString(encoding: NSUTF8StringEncoding) { request, response, content, error in NSLog("Request: %@ - %@n%@", request.HTTPMethod!, request.URL!, request.HTTPBody.map { body in NSString(data: body, encoding: NSUTF8StringEncoding) ?? "" } ?? "") if let response = response { NSLog("Response: %@n%@", response, content ?? "") }}SWIFT 2
let string = "duke"let jsonObject = ["$and":[["name":["$bw":string], "country":"gb"]]]let json = JSON(jsonObject)// Generate the string representation of the JSON valuelet jsonString = json.rawString(NSUTF8StringEncoding)!let params = ["filters" : jsonString, "limit": "1", "KEY": "my_key"]Alamofire.request(.GET, "http://httpbin.org/post", parameters: params) .responseString(encoding: NSUTF8StringEncoding) { request, response, result in NSLog("Request: %@ - %@n%@", request!.HTTPMethod!, request!.URL!, request!.HTTPBody.map { body in NSString(data: body, encoding: NSUTF8StringEncoding) ?? "" } ?? "") switch result { case .Success(let value): NSLog("Response with content: %@", value) case .Failure(let data, _): NSLog("Response with error: %@", data ?? NSData()) }}SWIFT 3和Alamofire 4.0
let string = "duke"let jsonObject = ["$and":[["name":["$bw":string], "country":"gb"]]]let json = JSON(jsonObject)// Generate the string representation of the JSON valuelet jsonString = json.rawString(.utf8)!let params = ["filters" : jsonString, "limit": "1", "KEY": "my_key"]Alamofire.request("http://httpbin.org/post", method: .get, parameters: params) .responseString { response in #if DEBUG let request = response.request NSLog("Request: (request!.httpMethod!) - (request!.url!.absoluteString)n(request!.httpBody.map { body in String(data: body, encoding: .utf8) ?? "" } ?? "")") switch response.result { case .success(let value): print("Response with content (value)") case .failure(let error): print("Response with error: (error as NSError): (response.data ?? Data())") } #endif}这将生成具有以下URL的GET请求：
http://httpbin.org/post?KEY=my_key&filters=%7B%22%24and%22%3A%5B%7B%22name%22%3A%7B%22%24bw%22%3A%22duke%22%7D%2C%22country%22%3A%22gb%22%7D%5D%7D&limit=1
URL解码为：
http://httpbin.org/post?KEY=my_key&filters={"$and":[{"name":{"$bw":"duke"},"country":"gb"}]}&limit=1
