AFNetworking3.0简单的二次封装网络请求

项目介绍：

实际开发中直接拿AFN来用多少回有点不顺手,个人简单的封装了一下afn,包括get ,post,网络请求和上传下载(断点下载虽然实现了,但是总感觉有点小问题,后期会继续完善),另外请求的缓存这一块还没做,后期会继续完善的
步骤:
1.创建管理者单例,方便统一管理

//单例 + (instancetype)sharedManager { static dispatch_once_t onceToken; static JZLNetworkingTool *instance; dispatch_once(&onceToken, ^{ NSURL *baseUrl = [NSURL URLWithString:@'']; instance = [[JZLNetworkingTool alloc] initWithBaseURL:baseUrl]; instance.responseSerializer.acceptableContentTypes = [NSSet setWithArray:@[@'application/json', @'text/html', @'text/json', @'text/plain', @'text/javascript', @'text/xml', @'image/*']]; }); return instance; }

2.简单的对请求返回成功和失败,以及进度回调的block

//请求成功的回调block typedef void(^responseSuccess)(NSURLSessionDataTask *task, id responseObject); //请求失败的回调block typedef void(^responseFailed)(NSURLSessionDataTask *task, NSError *error); //文件下载的成功回调block typedef void(^downloadSuccess)(NSURLResponse *response, NSURL *filePath); //文件下载的失败回调block typedef void(^downloadFailed)( NSError *error); //文件上传下载的进度block typedef void (^progress)(NSProgress *progress);

3.下面是一些常用请求的封装

/** get请求 @param url 请求url @param params 参数 @param success 成功回调 @param failed 失败回调 */ + (void)getWithUrl: (NSString *)url params: (NSDictionary *)params success: (responseSuccess)success failed: (responseFailed)failed ; //实现 //get请求 + (void)getWithUrl: (NSString *)url params: (NSDictionary *)params success: (responseSuccess)success failed: (responseFailed)failed { [[JZLNetworkingTool sharedManager] GET:url parameters:params progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) { //请求成功的回调 if (success) { success(task,responseObject); } } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) { //请求失败的回调 if (failed) { failed(task,error); } }]; }

post

/** post请求 @param url 请求url @param params 参数 @param success 成功回调 @param failed 失败回调 */ + (void)postWithUrl: (NSString *)url params: (NSDictionary *)params success: (responseSuccess)success failed: (responseFailed)failed ; //实现 //post请求 + (void)postWithUrl:(NSString *)url params:(NSDictionary *)params success:(responseSuccess)success failed:(responseFailed)failed { [[JZLNetworkingTool sharedManager] POST:url parameters:params progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) { if (success) { success(task,responseObject); } } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) { if (failed) { failed(task,error); } }]; }

上传

/** 文件上传(图片上传) @param url 请求url @param params 请求参数 @param fileData 上传文件的二进制数据 @param name 制定参数名 @param fileName 文件名(加后缀名) @param mimeType 文件类型 @param progress 上传进度 @param success 成功回调 @param failed 失败回调 */ + (void)uploadWithUrl: (NSString *)url params: (NSDictionary *)params fileData: (NSData *)fileData name: (NSString *)name fileName: (NSString *)fileName mimeType: (NSString *)mimeType progress: (progress)progress success: (responseSuccess)success failed: (responseFailed)failed; //实现 //文件上传 + (void)uploadWithUrl: (NSString *)url params: (NSDictionary *)params fileData: (NSData *)fileData name: (NSString *)name fileName: (NSString *)fileName mimeType: (NSString *)mimeType progress: (progress)progress success: (responseSuccess)success failed: (responseFailed)failed { [[JZLNetworkingTool sharedManager] POST:url parameters:params constructingBodyWithBlock:^(id<AFMultipartFormData> _Nonnull formData) { [formData appendPartWithFileData:fileData name:name fileName:fileName mimeType:mimeType]; } progress:^(NSProgress * _Nonnull uploadProgress) { if (progress) { progress(uploadProgress); } } success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) { if (success) { success(task,responseObject); } } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) { if (failed) { failed(task,error); } }]; }

6.下载的实现,一开始下载实现
一开始我使用下面这个API去实现下载,但是断点下载遇到了问题,一直开在断点下载这一块,所以后来取消了,这个只能实现下载,但是断点下载不可以(头文件中已经删除了这个方法)(如果有大神做好请分享学习一下)

//文件下载 + (void)downloadWithUrl: (NSString *)url savePathUrl: (NSURL *)fileUrl progress: (progress)progress success: (downloadSuccess)success failed: (downloadFailed)failed { NSURL *urlPath = [NSURL URLWithString:url]; NSURLRequest *request = [NSURLRequest requestWithURL:urlPath]; NSURLSessionDownloadTask *downloadTask = [[JZLNetworkingTool sharedManager] downloadTaskWithRequest:request progress:^(NSProgress * _Nonnull downloadProgress) { //可以在此block里面返回主线程去刷新下载进度条 progress(downloadProgress); if (downloadProgress.totalUnitCount == 1) { //下载完成清空断点数据 [JZLNetworkingTool sharedManager].resumeData = nil; //清除沙盒文件 NSFileManager *fileMger = [NSFileManager defaultManager]; NSString *resumePath = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)objectAtIndex:0]stringByAppendingPathComponent:[JZLNetworkingTool sharedManager].resumeDataPath]; if ([fileMger fileExistsAtPath:resumePath]) { NSError *err; [fileMger removeItemAtPath:resumePath error:&err]; } } } destination:^NSURL * _Nonnull(NSURL * _Nonnull targetPath, NSURLResponse * _Nonnull response) { return [fileUrl URLByAppendingPathComponent:[response suggestedFilename]]; } completionHandler:^(NSURLResponse * _Nonnull response, NSURL * _Nullable filePath, NSError * _Nullable error) { if (error) { failed(error); }else { //可以根据文件路径拿到下载的文件进行操作,比如显示图片 success(response,filePath); [JZLNetworkingTool sharedManager].dataPath = [filePath absoluteString]; } }]; [JZLNetworkingTool sharedManager].downloadTask = downloadTask; [downloadTask resume]; }#p#分页标题#e#

后来又重新整理了下,实现了断点下载,测试成功,不知道实际还会不会有问题,有问题会继续修改
1.自定义session,设置代理

- (NSURLSession *)downloadSession { if (_downloadSession == nil) { NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration]; // nil : nil的效果跟 [[NSOperationQueue alloc] init] 是一样的 _downloadSession = [NSURLSession sessionWithConfiguration:config delegate:self delegateQueue:nil]; } return _downloadSession; }

2.下载

//文件下载 支持断点下载 + (void)downloadWithUrl: (NSString *)url { // 1. URL NSURL *URL = [NSURL URLWithString:url]; // 2. 发起下载任务 [JZLNetworkingTool sharedManager].downloadTask = [[JZLNetworkingTool sharedManager].downloadSession downloadTaskWithURL:URL]; // 3. 启动下载任务 [[JZLNetworkingTool sharedManager].downloadTask resume]; }

3.暂停下载

//暂停下载 - (void)pauseDownload { [self.downloadTask cancelByProducingResumeData:^(NSData * _Nullable resumeData) { self.resumeData = resumeData; //将已经下载的数据存到沙盒,下次APP重启后也可以继续下载 NSString *doc = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject]; // 拼接文件路径 上面获取的文件路径加上文件名 NSString *path = [@'sssssaad' stringByAppendingString:@'.plist']; NSString *plistPath = [doc stringByAppendingPathComponent:path]; self.resumeDataPath = plistPath; [resumeData writeToFile:plistPath atomically:YES]; self.resumeData = resumeData; self.downloadTask = nil; }]; }

4.继续下载

//继续下载 - (void)resumeDownloadprogress: (progress)progress success: (downloadSuccess)success failed: (downloadFailed)failed { if (self.resumeData == nil) { NSData *resume_data = [NSData dataWithContentsOfFile:self.resumeDataPath]; if (resume_data == nil) { // 即没有内存续传数据,也没有沙盒续传数据,就续传了 return; } else { // 当沙盒有续传数据时,在内存中保存一份 self.resumeData = resume_data; } } // 续传数据时,依然不能使用回调 // 续传数据时起始新发起了一个下载任务,因为cancel方法是把之前的下载任务干掉了 (类似于NSURLConnection的cancel) // resumeData : 当新建续传数据时,resumeData不能为空,一旦为空,就崩溃 // downloadTaskWithResumeData :已经把Range封装进去了 if (self.resumeData != nil) { self.downloadTask = [self.downloadSession downloadTaskWithResumeData:self.resumeData]; // 重新发起续传任务时,也要手动的启动任务 [self.downloadTask resume]; } }

5.实现下面的两个代理方法,一个是监听下载进度.另外一个是文件下载结束的代理方法(必须实现)

/// 监听文件下载进度的代理方法 - (void)URLSession:(NSURLSession *)session downloadTask:(NSURLSessionDownloadTask *)downloadTask didWriteData:(int64_t)bytesWritten totalBytesWritten:(int64_t)totalBytesWritten totalBytesExpectedToWrite:(int64_t)totalBytesExpectedToWrite { // 计算进度 float downloadProgress = (float)totalBytesWritten / totalBytesExpectedToWrite; NSLog(@'%f',downloadProgress); } /// 文件下载结束时的代理方法 (必须实现的) - (void)URLSession:(NSURLSession *)session downloadTask:(NSURLSessionDownloadTask *)downloadTask didFinishDownloadingToURL:(NSURL *)location { // location : 文件下载结束之后的缓存路径 // 使用session实现文件下载时,文件下载结束之后,默认会删除,所以文件下载结束之后,需要我们手动的保存一份 NSLog(@'%@',location.path); NSString *path = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES).firstObject; // NSString *path = @'/Users/allenjzl/Desktop/ssssss/zzzz.zip'; // 文件下载结束之后,需要立即把文件拷贝到一个不会销毁的地方 [[NSFileManager defaultManager] copyItemAtPath:location.path toPath:[path stringByAppendingString:@'/.zzzzzzz.zip'] error:NULL]; NSLog(@'%@',path); } #p#分页标题#e#

因为自己工作的项目遇到电商的很多,数据缓存这一块很重要,之前都是用的别人封装好的,接下来会继续完善这个请求,缓存这一块加进去,还有网络监测这一块,未完待续......
如果能帮到你,我很快乐,请star一下下,如果你发现问题,请指出来,共同进步
简书地址:
demo github地址: https://github.com/allenjzl/JZLNetworking.git

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