一、问题描述：1.下载失败报错：
文件写入失败Error Domain=NSCocoaErrorDomain Code=512 "未能将文件“jquery_1_10_2_min.js”存储到文件夹“Q20180104153006399”中。"
原因及解决方法：文件夹下均为文件，不包含子文件夹，GoldRaccoon第三方不会创建存储的本地文件夹，所以需要自己提前手动创建好下载的本地文件夹
NSFileManager *fileManager = [NSFileManager defaultManager];NSString *zhenggedizhi1 = [documentsDirectoryPath stringByAppendingString:[NSString stringWithFormat:@"/%@/Q20180104153006399",@"OralQuesBank"]];[fileManager createDirectoryAtPath:zhenggedizhi1 withIntermediateDirectories:YES attributes:nil error:nil];
二、补充：GoldRaccoon基本使用方法
第三方GoldRaccoon使用方法主要参考网址:https://blog.csdn.net/wobushizhaoqian/article/details/72845898?locationNum=10&fps=1
代码：
/** 下载FTP资源 */ #import "GRRequestsManager.h" #import "GRListingRequest.h" #import "FCFileManager.h" <GRRequestsManagerDelegate> @property (nonatomic, strong) GRRequestsManager *requestsManager;
- (void)viewDidLoad {[super viewDidLoad];// Do any additional setup after loading the view.self.view.backgroundColor = [UIColor orangeColor]; UIButton *downBtn = [UIButton buttonWithType:UIButtonTypeCustom];[downBtn setTitle:@"下载" forState:UIControlStateNormal];downBtn.backgroundColor = [UIColor cyanColor];[downBtn addTarget:self action:@selector(startDownClick) forControlEvents:UIControlEventTouchUpInside];[self.view addSubview:downBtn];[downBtn mas_makeConstraints:^(MASConstraintMaker *make) {make.center.equalTo(self.view);make.size.mas_equalTo(CGSizeMake(50, 40));}]; }- (void)startDownClick{//列表localuser下的文件夹目录，这里做的只是列表目录下面有什么[self.requestsManager addRequestForListDirectoryAtPath:@"OralQuesBank/Q20180104153006399"]; [self.requestsManager startProcessingRequests]; } #pragma mark *** GRRequestsManagerDelegate *** //代理方法，每次执行列表方法都会走这个方法 - (void)requestsManager:(id<GRRequestsManagerProtocol>)requestsManager didCompleteListingRequest:(id<GRRequestProtocol>)request listing:(NSArray *)listing{//沙盒目录NSString *documentsDirectoryPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];GRListingRequest *req = (GRListingRequest *)request;//远程文件夹列表NSLog(@"%@",listing);//打印创建的目录NSLog(@"%@",documentsDirectoryPath);NSFileManager *fileManager = [NSFileManager defaultManager];
NSString *zhenggedizhi1 = [documentsDirectoryPath stringByAppendingString:[NSString stringWithFormat:@"/%@/Q20180104153006399",@"OralQuesBank"]];[fileManager createDirectoryAtPath:zhenggedizhi1 withIntermediateDirectories:YES attributes:nil error:nil];//文件夹列表枚举[listing enumerateObjectsUsingBlock:^(id _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
if ([[obj pathExtension] isEqualToString:@""]) {//整个地址，在沙盒中创建和远程文件一样的文件夹目录NSString *zhenggedizhi = [documentsDirectoryPath stringByAppendingString:[NSString stringWithFormat:@"%@/%@",req.path,obj]];//如果沙盒中的这个文件夹不存在就创建if (![fileManager fileExistsAtPath:zhenggedizhi]) {[fileManager createDirectoryAtPath:zhenggedizhi withIntermediateDirectories:YES attributes:nil error:nil];}//然后接着递归列举文件夹下的子文件夹下的目录[self.requestsManager addRequestForListDirectoryAtPath:[NSString stringWithFormat:@"%@%@",req.path,obj]];[self.requestsManager startProcessingRequests];}else{//如果目录下的不是文件夹，则下载这个文件到沙盒的指定目录下NSString *zhenggedizhi = [documentsDirectoryPath stringByAppendingString:[NSString stringWithFormat:@"%@/%@",req.path,obj]];//如果沙盒中的这个文件夹不存在就创建if (![fileManager fileExistsAtPath:zhenggedizhi]) {[fileManager createDirectoryAtPath:zhenggedizhi withIntermediateDirectories:YES attributes:nil error:nil];}[self.requestsManager addRequestForDownloadFileAtRemotePath:[NSString stringWithFormat:@"%@/%@",req.path,obj] toLocalPath:[documentsDirectoryPath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@%@",req.path,obj]]];[self.requestsManager startProcessingRequests];}}];} - (void)requestsManager:(id<GRRequestsManagerProtocol>)requestsManager didFailRequest:(id<GRRequestProtocol>)request withError:(NSError *)error {NSLog(@"请求失败requestsManager:didFailRequest:withError: \n %@", error);// NSString *errorStr = [NSString stringWithFormat:@"%@",error]; // [self downLoadFail];//可添加处理下载失败后自己的删除文件夹路径方法 }- (void)requestsManager:(id<GRRequestsManagerProtocol>)requestsManager didFailWritingFileAtPath:(NSString *)path forRequest:(id<GRDataExchangeRequestProtocol>)request error:(NSError *)error{LSLog(@"文件写入失败%@",error); }- (void)requestsManagerDidCompleteQueue:(id<GRRequestsManagerProtocol>)requestsManager{LSLog(@"整个文件夹下载完成+++++++++++++++++"); }#pragma mark - layzy - (GRRequestsManager *)requestsManager{if (!_requestsManager) {_requestsManager = [[GRRequestsManager alloc] initWithHostname:@"ftp://11.11.111.11:12" user:@"Administrator" password:@"这是ftp密码"];// 设置代理_requestsManager.delegate = self;}return _requestsManager; }
