Swift

Alamofire4.4 网络请求的封装

Posted by zhouen on 2017-03-11

github： https://github.com/enamor/Alamofire/

Usage

Making a GET Request it’s just requests for JSON

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NIRequest.getRequest("https://xxx.com", 
success: { (dictResponse) in
print(dictResponse)
}) { (error) in
print(error)
}

NIRequest.getRequest("https://xxx.com", 
params: ["title":"xxx"], 
success: { (dictResponse) in
print(dictResponse)
}) { (error) in
print(error)
}

Making a POST Request it’s just requests for JSON

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NIRequest.postRequest("https://xxx.com", 
params: ["title":"xxx"], 
success: { (dictResponse) in
print(dictResponse)
}) { (error) in
print(error)
}

Making an Image Upload

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let image = UIImage(named: "mbase.jpg")
let data = UIImagePNGRepresentation(image!);

NIRequest.upLoadImage(url, data: data!, 
success: { (dictResponse) in

}) { (error) in

}

Multi file upload

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let image = UIImage(named: "mbase.jpg")
let data = UIImagePNGRepresentation(image!);
NIRequest.upLoadFiles(urlString, data: [data!,data!], 
success: { dictResponse in

}) { error in

}

Source code

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import UIKit
import Alamofire


public typealias Success = (_ response : [String : Any])->()
public typealias Failure = (_ error : Error)->()

class NIRequest: NSObject {

///单例写法（此处无需单例 直接用类方法）
static let shared = NIRequest()
private override init() {
// 初始化一些内容
}


}


// MARK: -------- GET POST
extension NIRequest {
/// GET请求
class func getRequest(
_ urlString: String,
params: Parameters? = nil,
success: @escaping Success,
failure: @escaping Failure)
{
request(urlString, params: params, method: .get, success, failure)
}

/// POST请求
class func postRequest(
_ urlString: String,
params: Parameters? = nil,
success: @escaping Success,
failure: @escaping Failure)
{

request(urlString, params: params, method: .post, success, failure)
}

private class func request(
_ urlString: String,
params: Parameters? = nil,
method: HTTPMethod,
_ success: @escaping Success,
_ failure: @escaping Failure)
{

Alamofire.request(urlString, method: method, parameters: params)
.validate(statusCode: 200..<300)
.responseJSON { response in

switch response.result {
case .success:
if let value = response.result.value as? [String: AnyObject] {
success(value)
}
case .failure(let error):
failure(error)
}
}

}

}

// MARK: -------- 上传(可多文件上传)
extension NIRequest {


/// 单文件上传
///
/// - Parameters:
///   - urlString:
///   - data: 二进制文件
///   - name: 和后台约定字段名称
///   - fileName: xx.png xx.jpg xx.zip...
class func upLoadImage(
_ urlString: String,
data: Data,
name: String = "image",
fileName: String = "image.png",
params: Parameters? = nil,
success: @escaping Success,
failure: @escaping Failure)
{
upLoadFiles(urlString, data: [data], names: [name], fileNames: [fileName], params: params, success: success, failure: failure)
}

/// 上传多文件
///
/// - Parameters:
///   - urlString: url
/// - parameter data:     The data to encode into the multipart form data.
/// - parameter name:     The name to associate with the data in the `Content-Disposition` HTTP header.

class func upLoadFiles(
_ urlString: String,
data: [Data],
names: [String]? = nil,
fileNames: [String]? = nil,
params: Parameters? = nil,
success: @escaping Success,
failure: @escaping Failure)
{
Alamofire.upload(
multipartFormData: { multipartFormData in

assert(names?.count == fileNames?.count, "names.count != fileNames.count There may be problems")

for i in 0..<data.count {
let data_name = names?[i] ?? "image\(i)"
let file_name = fileNames?[i] ?? "image\(i).png"

//"image/png"
multipartFormData.append(data[i], withName: data_name ,fileName: file_name, mimeType: "multipart/form-data")
}

//参数添加
if let params = params {
for (key, value) in params {
multipartFormData.append(((value as AnyObject).data(using: String.Encoding.utf8.rawValue)!), withName: key)

}
}

},
to: urlString,
encodingCompletion: { encodingResult in
switch encodingResult {
case .success(let upload, _, _):
upload.responseJSON { response in
if let value = response.result.value as? [String: Any]{
success(value)
}
}
case .failure(let encodingError):
failure(encodingError)
}
}
)

}


}



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