Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers.
This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers.
Closed 7 years ago.
Improve this question
I want to scrape the data inside <div class="nutrition-label">
using jsoup I am using:
Element element = doc.select("div.nutrition-label");
element is always empty, any help?
the website is http://caloriecount.about.com/calories-bananas-i9040
Regards
The site you are requesting does not recognize your useragent, which leads you to an empty element.
Setting the useragent to something like below should render your desired result.
Document doc = Jsoup.connect(url).userAgent("Mozilla/5.0 (Windows NT 6.2; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1667.0 Safari/537.36").get();
Elements el = doc.select("div.nutrition-label");
Related
Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers.
This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers.
Closed 4 months ago.
Improve this question
Currently when I do a Get request on google.com, I get a 400 error return code
Is this expected behavior? I was expecting an HTML response.
If a 400 error is expected, why? Shouldn't we be returned with some HTML just like when we do a GET request in browser?
If a 400 error is not expected, why would this be happening?
The issue was a miss-configured proxy (file->settings->proxy).
Once configured properly, this was the result:
Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers.
This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers.
Closed 4 years ago.
Improve this question
So when I run R and try to read a file, it gives me an error like this
Error message
But I definitely have my file in my directory. As I can tell below photo.
working directory
How can I solve this problem??
You definitely don't have that file in your directory as I can tell from your photo.
However it seems you don't understand what you're looking at. It seems you want to use the rubber.df dataset from the R330 package which you can load using data(rubber.df) and then use by calling rubber.df
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.
This question does not appear to be about a specific programming problem, a software algorithm, or software tools primarily used by programmers. If you believe the question would be on-topic on another Stack Exchange site, you can leave a comment to explain where the question may be able to be answered.
Closed 6 years ago.
Improve this question
a google search did not help me out so i'm hoping our community will...
i'm new to rstudio and while its easy to just press the up button to go back sequentially through r commands when the command you are looking for is just a few commands back, it's hard when the command is a while back.
I'm looking for something like ctrl-R in linux environments where you type a few letters and it completes your command based on your history.
is there something like this in rstudio?
You can try history()
For e.g
history(max.show = 50, reverse = F, pattern = "data.table::")
This will automatically open the commands used in the past .
You can search in your history in RStudio
Closed. This question needs to be more focused. It is not currently accepting answers.
Want to improve this question? Update the question so it focuses on one problem only by editing this post.
Closed 7 years ago.
Improve this question
First of all, this is obviously for learning porpoises only. Don't be afraid to answer.
So anyway, is there a way for a man to hack a computer logging in, for example, to a garry's mod server hosted on my PC?
If there is, I am very interested on how this is working. Explanations will be welcome.
In general terms, yes, it's possible. Game clients receive data from their servers, which they expect to be in a particular format. If the server is modified to send mis-formatted data, the result could easily be to trigger a buffer overflow or other exploitable bug in the client.
See for example http://threatpost.com/researchers-discover-dozens-of-gaming-client-and-server-vulnerabilities/100744
Not sure about your locale, but most countries have a similar law to the UK's Computer Misuse Act. Which pretty much means 'hacking back' is illegal.
If you want to learn about exploits, and how to use them ethically - www.google.com is the place to start, try looking for 'ethical hacking course'
Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers.
This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers.
Closed 4 days ago.
Improve this question
My issue is with steps 6, 7, and 8 on this page: http://docs.aws.amazon.com/general/latest/gr/sigv4-create-canonical-request.html
Steps 6 and 7 are easy to follow. For illustration purposes, you can use a free generator: http://hash.online-convert.com/sha256-generator
Action=ListUsers&Version=2010-05-08 converts to b6359072c78d70ebee1e81adcbab4f01bf2c23245fa365ef83fe8f1f955085e2, just like it says it will. But on step 8, in which it says to use the same algorithm,
POST
/
content-type:application/x-www-form-urlencoded; charset=utf-8
host:iam.amazonaws.com
x-amz-date:20110909T233600Z
content-type;host;x-amz-date
b6359072c78d70ebee1e81adcbab4f01bf2c23245fa365ef83fe8f1f955085e2
does not convert to 3511de7e95d28ecd39e9513b642aee07e54f4941150d8df8bf94b328ef7e55e2 at all. Rather, I get 8b483975a604a39ca8882bc11bc0101df17c9ecc64a96206e504babc614fcb37. The example is very unclear to me. I'm likely interpreting it incorrectly, but how?
I managed to run this down - turns out that my canonical header was line-separated by \r\n rather than just \n. I changed from a stringbuilder to just concatenated strings separated with \n an it worked fine.