Swift網(wǎng)絡(luò)編程-文件下載上傳.png
一.前言
iOS開發(fā)中和服務(wù)器打交道除了數(shù)據(jù)請求外,還有文件的上傳及下載,OC中文件上傳及下載,筆者就不多說了,今天來看下Swift中該如何進(jìn)行文件的下載及上傳,同樣筆者做下簡單封裝,方便在其他地方調(diào)用.
二.實現(xiàn)
-1.首先導(dǎo)入Alamofire這個庫,并創(chuàng)建數(shù)據(jù)請求類(繼成NSObject)筆者命名為XHNetwork
-2.1.在XHNetwork.swift中import Alamofire這個庫,并創(chuàng)建下列屬性:
import UIKit
import Alamofire
class XHNetwork: NSObject {
/**
* 網(wǎng)絡(luò)請求成功閉包:
*/
typealias XHNetworkSuccess = (response:AnyObject) -> ()
/**
* 網(wǎng)絡(luò)請求失敗閉包:
*/
typealias XHNetworkFailure = (error:NSError) -> ()
/**
* 上傳進(jìn)度閉包:(回調(diào):1.單次上傳大小 2.已經(jīng)上傳大小,3.文件總大小)
*/
typealias UploadProgress = (bytesWritten: Int64, totalBytesWritten: Int64, totalBytesExpectedToWrite: Int64) -> ()
/**
* 下載進(jìn)度閉包:(回調(diào):1.單次寫入大小 2.已經(jīng)寫入大小,3.文件總大小)
*/
typealias DownloadProgress = (bytesRead:Int64, totalBytesRead:Int64, totalBytesExpectedToRead:Int64) -> ()
/**
* 網(wǎng)絡(luò)請求單例
*/
static let shareNetwork = XHNetwork()
}
-2.2.文件上傳
/**
文件上傳
- parameter urlString: URL
- parameter fileURL: 要上傳文件路徑URL(包含文件名)
- parameter uploadProgress: 上傳進(jìn)度回調(diào)(子線程)
- parameter success: 成功回調(diào)
- parameter failure: 失敗回調(diào)
*/
func upload(urlString: String ,fileURL:NSURL,uploadProgress:UploadProgress, success: XHNetworkSuccess, failure: XHNetworkFailure){
Alamofire.upload(.POST,urlString, file: fileURL)
.progress { bytesWritten, totalBytesWritten, totalBytesExpectedToWrite in
/*
bytesWritten 單次上傳大小
totalBytesWritten 已經(jīng)上傳了大小
totalBytesExpectedToWrite 文件總大小
*/
/**
* 子線程回調(diào)上傳進(jìn)度
*/
uploadProgress(bytesWritten:bytesWritten,totalBytesWritten:totalBytesWritten,totalBytesExpectedToWrite:totalBytesExpectedToWrite)
}
.validate()
.responseJSON { response in
switch response.result {
case .Success(let value):
/**
* 成功
*/
success(response: value)
case .Failure(let error):
/**
* 失敗
*/
failure(error: error)
debugPrint(error)
}
}
}
-2.3.文件下載
/**
文件下載
- parameter urlString: 下載URL
- parameter downloadProgress: 下載進(jìn)度回調(diào)(子線程)
- parameter fileSavePathURL: 文件存儲路徑URL(不含文件名)
- parameter success: 成功回調(diào)
- parameter failure: 失敗回調(diào)
*/
func download(urlString: String ,savePathURL:NSURL ,downloadProgress: DownloadProgress, success: XHNetworkSuccess, failure: XHNetworkFailure){
Alamofire.download(.GET, urlString) { temporaryURL, response in
let pathComponent = response.suggestedFilename//建議文件名
return savePathURL.URLByAppendingPathComponent(pathComponent!)
}.progress { bytesRead, totalBytesRead, totalBytesExpectedToRead in
print(totalBytesRead)
/*
bytesRead 單次下載大小
totalBytesRead 已經(jīng)下載大小
totalBytesExpectedToRead 文件總大小
*/
/**
* 子線程回調(diào)下載進(jìn)度
*/
downloadProgress(bytesRead:bytesRead,totalBytesRead:totalBytesRead,totalBytesExpectedToRead:totalBytesExpectedToRead)
}
.response { _, _, _, error in
if let error = error {
/**
* 失敗
*/
failure(error:error)
debugPrint("Failed with error: \(error)")
} else {
/**
* 成功
*/
success(response: savePathURL.absoluteString)
}
}
}
三.調(diào)用
-1.1.文件上傳-調(diào)用
//MARK : - 文件上傳
XHNetwork.shareNetwork.upload(上傳URLString , fileURL: 文件完整路徑URL, uploadProgress: { (bytesWritten, totalBytesWritten, totalBytesExpectedToWrite) in
/**
* 子線程回調(diào)上傳進(jìn)度
*/
debugPrint("單次上傳大小:\(bytesWritten)___一共上傳大小:\(totalBytesWritten)___總大小:\(totalBytesExpectedToWrite)")
/**
* 如需進(jìn)行UI處理,請到主線程操作
*/
dispatch_async(dispatch_get_main_queue()) {
//處理UI
}
}, success: { (response) in
/*
成功
*/
debugPrint(response)
}) { (error) in
/*
失敗
*/
debugPrint(error)
}
-1.2.文件下載-調(diào)用
//MARK: - 下載
//文件保存路徑
let savePathURL = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)[0]
XHNetwork.shareNetwork.download("下載URLString", savePathURL: savePathURL
, downloadProgress: { (bytesRead, totalBytesRead, totalBytesExpectedToRead) in
/**
* 子線程回調(diào)下載進(jìn)度
*/
debugPrint("單次下載大小:\(bytesRead)___一共下載大小:\(totalBytesRead)___總大小:\(totalBytesExpectedToRead)")
/**
* 如需進(jìn)行UI處理,請到主線程操作
*/
dispatch_async(dispatch_get_main_queue()) {
//處理UI
}
}, success: { (response) in
/*
成功(回調(diào)文件存儲路勁)
*/
debugPrint(response)
}) { (error) in
/*
失敗
*/
debugPrint(error)
}
四.小節(jié)
- 網(wǎng)絡(luò)編程常用功能就介紹到這里,還有需求的同學(xué),可以去看下Alamofire官方文檔
- 傳送門:Swift網(wǎng)絡(luò)編程(一)數(shù)據(jù)請求
- 代碼地址:https://github.com/CoderZhuXH/XHNetworkSwift
