Downloading url from text file






















A naive way to do it will be -. It works but is not the optimum way to do so as it involves downloading the file for checking the header. So if the file is large, this will do nothing but waste bandwidth. I looked into the requests documentation and found a better way to do it. That way involved just fetching the headers of a url before actually downloading it. This allows us to skip downloading files which weren't meant to be downloaded.

To restrict download by file size, we can get the filesize from the Content-Length header and then do suitable comparisons. We can parse the url to get the filename. This will be give the filename in some cases correctly. If you want to download a file via FTP and a username and password is required, then you will need to use the --ftp-user and --ftp-password options. If you are getting failures during a download, you can use the -t option to set the number of retries.

Such a command may look like this:. If you want to get only the first level of a website, then you would use the -r option combined with the -l option. It has many more options and multiple combinations to achieve a specific task. You can also find the wget manual here in webpage format. Redirecting Output The -O option sets the output file name. Downloading in the background. If you want to download a large file and close your connection to the server you can use the command: wget -b url Downloading Multiple Files If you want to download multiple files you can create a text file with the list of target files.

You can verify this by using the -I flag, which displays the request headers rather than the contents of the file:. The output shows that the URL was redirected. The first line of the output tells you that it was moved, and the Location line tells you where:. You could use curl to make another request manually, or you can use the --location or -L argument which tells curl to redo the request to the new location whenever it encounters a redirect.

Give it a try:. You can combine the -L argument with some of the aforementioned arguments to download the file to your local system:. Warning : Many resources online will ask you to use curl to download scripts and execute them.

In other words, no matter which of the four types you use, the client-side will not notice any difference when downloading a file from the API endpoint. Apart from the constructors for the four concrete types, we can use a method File , provided natively from the ControllerBase class, to return a concrete FileResult object.

With the groundwork laid, we can easily write an action method as follows:. In the code above, we first find or generate the requested file from the local file system or a file storage, then read the file content. In the end line 7 , we return a FileContentResult object that is created using the method File byte[] fileContents, string contentType, string fileDownloadName.

Note that we should validate the request and user permissions before finding or generating the requested file. And you can choose to stream the file too. In the File method line 7 , the second parameter contentType is used in the HTTP header to indicate the format of contents transmitted over the internet.

You can set the value for contentType according to your file type. In the File method, the third parameter fileDownloadName determines the value for the filename attribute in the content-disposition HTTP response header. Browsers treat this value as the top priority to dictate the filename when downloading the file.

I have tried many of the solutions in other stack overflow questions but I can't seem to make any of the solutions work. It's from the internal wiki page of my firm. I am extremely new to VBA, so the solutions I read will probably work but they were not idiot proof. I stopped working with the first one because it seemed like you needed Mozilla for that one, and I did not know how to specify Chrome. Edited: Tim Williams - your solution is the closest to have anything at all happen besides just VBA errors.

I got as far as turning my spreadsheet into a log in page, so I guess I need to pass a username and password somehow. You should be able to turn on the Macro Recorder and get what you want pretty quickly.

In fact, you probably spent 10x more time describing the scenario, then it would take to record the code you need. Although, it is possible that you actually can't import the data using the Macro Recorder. You should still be able to import the data by referencing a CSV, which I believe is the exact same thing as a Text file.



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