Question

我到处寻找并且找不到我想要的东西，所以这是我的问题：

我有一个基本的应用程序，我正在玩。我已经创建了一个webview，并希望能够从加载到webview中的网站下载文件，并将文件保存到本地计算机上的“下载”文件夹中。该网站在webview中加载正常，现在如何下载文件，从网站上说一个.xml文件并将其保存到本地计算机上的Downloads文件夹中？

这是我到目前为止所做的：

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{

    NSURL *url = [NSURL URLWithString:@"http://www.google.com"];//<-- example site
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    [[webView mainFrame] loadRequest:request];



}

我希望能够下载文件（可能使用委托），然后将其保存到本地计算机上的某个位置。我对此很新，所以我很感激任何帮助。

Answer 1

问题已经解决。我添加了以下代码以使其工作：

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
    NSURL *url = [NSURL URLWithString:@"http://www.google.com"]; // <-- example website
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    self.webView.policyDelegate = self;
    [self.webView setDownloadDelegate:self];
    [[self.webView mainFrame] loadRequest:request];

}

- (void)webView:(WebView *)webView decidePolicyForMIMEType:(NSString *)type
                                                    request:(NSURLRequest *)request
                                                    frame:(WebFrame *)frame
                                            decisionListener:(id < WebPolicyDecisionListener >)listener
{
    if([type isEqualToString:@"application/octet-stream"]) //this is the type I was looking for
    {
        //figure out how to save file here

        [listener download];
        NSURLDownload *downLoad = [[NSURLDownload alloc] initWithRequest:request delegate:self];

        if(downLoad)
        {
            [self download:downLoad decideDestinationWithSuggestedFilename:@"filename.ext"];
            NSLog(@"File Downloaded Succesfully");
            //[webView close];
            [self.window close];

        }
        else
        {
            NSLog(@"The download failed");
        }



    }
    //just ignore all other types; the default behaviour will be used
}

-(void)download:(NSURLDownload *)download decideDestinationWithSuggestedFilename:(NSString *)filename
{
    NSString *destinationFileName;
    NSString *homeDirectory = NSHomeDirectory();

    destinationFileName = [[homeDirectory stringByAppendingPathComponent:@"Documents"] stringByAppendingPathComponent:filename];
    [download setDestination:destinationFileName allowOverwrite:NO]; //file is being saved to the Documents folder on the local machine
}

希望这会对其他人有所帮助。

如何从os x中的webview下载文件并将其保存到特定位置

1 个答案: