How to catch value of parameter in Apache2 CGI
I have a little apache2 CGI application on the Ubuntu. The CGI handler is bash shell script.
My client application is search.html:<html>
<body>
<form action="/cgi-bin/search.sh" method="post">
<input type="text" name="searchKey" size="10">开发者_开发技巧</input>
<input type=SUBMIT value="search">
<form>
</body>
</html>
firstly, I just want to catch value of "searchKey" parameter in server side. I tried like following, but displaying nothing.
search.sh is:#!/bin/bash
echo Content-type:text/plain
echo ""
echo $SEARCHKEY
Guys, can you tell me how to catch value of the parameter in the server side?
UPDATE thank you for all answers.I understood that to get a value of post request need to read data from STDIN. i tried as Ithcy suggest like following#!/bin/bash
echo post=$(</dev/stdin)
echo 'content length:'$CONTENT_LENGTH
echo 'content:'$post
it was displaying only that:
content length:30
content:
why is content nothing? do i need to do more configure on Apache server to read post data? Thanks
POSTs will come through STDIN.
#!/bin/bash
POST=$(</dev/stdin)
echo $POST
But you really should look at using perl (or python, PHP, etc) if you can, as Glenn Jackman suggests.
The whole querystring is represented in the $QUERY_STRING variable. You can see this by running env without arguments in your shell script.
Example for getting only the searchKey value:
echo $QUERY_STRING | sed 's/searchKey\=\([^&]\+\).*/\1/'
Update: I'm sorry, this only applies if you are using GET to post your form. I didn't read the details =/
If you really need to read POSTs, this page may help you: http://digitalmechanic.wordpress.com/2008/02/21/handling-post-data-in-bash-cgi-scripts/ I didn't get it to work, though.
Sorry no one answered your question all these months. This works:
#!/bin/bash
echo
echo post=$(</dev/stdin)
echo 'content length:'$CONTENT_LENGTH
echo 'content:'$post
You must insert a blank line after /bin/bash (if not echo, printf "\n" will do)
This is good documentation about the CGI protocol: http://hoohoo.ncsa.illinois.edu/cgi/
I'd suggest you consider using a language (such as Perl) with a good CGI library so you don't have to reinvent a wheel that's been perfected years ago.
Try
echo $1
instead of
echo $SEARCHKEY
Try this script to list content of your input:
#!/bin/bash
echo 'content length:'$CONTENT_LENGTH
read StringInBox
echo $StringInBox
加载中,请稍侯......
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