Question

我有文件路径网址，如下所示

http://ccidahra.com/wp-content/uploads/2016/03/sample.ppt

当我在浏览器中打开时，浏览器会提供下载文件的选项。这意味着URL正确，下载的文件也是打开的，因此文件也正确。但是当我尝试在iOS中使用代码执行相同操作时。我收到了错误。我在下面写了代码来下载文件。

  NSString *fullURL = @"http://ccidahra.com/wp-content/uploads/2016/03/sample.ppt";
    NSString *encodedURL = [fullURL stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLHostAllowedCharacterSet]];
   NSURL *url = [NSURL URLWithString:encodedURL];

NSLog(@"fullURL %@",fullURL);
NSURLSession *sessions = [NSURLSession sharedSession];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc]initWithURL:url];

NSURLSessionDataTask *dataTask = [sessions dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {

    if (!error) {

        NSString *docPath = [[AppDelegate documentsDirectory] stringByAppendingString:@"/sample.ppt"];

        if ([[NSFileManager defaultManager] fileExistsAtPath:docPath]){
            [[NSFileManager defaultManager ]removeItemAtPath:docPath error:nil];

        }

        if ([[NSFileManager defaultManager] createFileAtPath:docPath contents:data attributes:nil]) {
            NSLog(@"file created ar %@",docPath);
        }
        else{
            NSLog(@"file can not created ar %@",docPath);
        }
    }else
    {
        NSLog(@"Error %@",error);
        dispatch_async(dispatch_get_main_queue(), ^{
            [MBProgressHUD hideHUDForView:self.view animated:YES];
        });

        [AlertView showAlertWithTitle:@"Error" withMessage:@"Service error! Please connect to the internet" inViewController:self];
    }
}];
[dataTask resume];

下载文件时出现以下错误。

Error Domain=NSURLErrorDomain Code=-1002 "unsupported URL" UserInfo={NSUnderlyingError=0x608000253fb0 {Error Domain=kCFErrorDomainCFNetwork Code=-1002 "(null)"}, NSErrorFailingURLStringKey=http%3A%2F%2Fccidahra.com%2Fwp-content%2Fuploads%2F2016%2F03%2Fsample.ppt, NSErrorFailingURLKey=http%3A%2F%2Fccidahra.com%2Fwp-content%2Fuploads%2F2016%2F03%2Fsample.ppt, NSLocalizedDescription=unsupported URL}

请帮我解决这个问题。我想在UIWebview中打开ppt，pptx，doc文件。

Answer 1

它已经是一个有效的编码网址。不要对其进行两次URL编码。您将路径分隔符转换为％2F，将方案分隔符转换为％3A，因此无法再找到方案或路径组件。

Answer 2

在Swift 3.0代码中

@IBOutlet weak var myWeb: UIWebView!

let url = URL(string: "Your URL")
        let urlRequest = URLRequest(url: url!)
        myWeb.scalesPageToFit = true
        myWeb?.loadRequest(urlRequest)

目标C

NSString *urlString = @"Your Url";
    NSURL *url = [NSURL URLWithString:urlString];
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    _myWeb.scalesPageToFit = true;
    [_myWeb loadRequest:request];

如何从URL下载pptx文件

2 个答案: