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<html><head><title>Debugging (Perl in a Nutshell, 2nd Edition)</title><link rel="stylesheet" type="text/css" href="../style/style1.css" /><meta name="DC.Creator" content="Stephen Spainhour" /><meta name="DC.Format" content="text/xml" scheme="MIME" /><meta name="DC.Language" content="en-US" /><meta name="DC.Publisher" content="O'Reilly & Associates, Inc." /><meta name="DC.Source" scheme="ISBN" content="0596002416L" /><meta name="DC.Subject.Keyword" content="stuff" /><meta name="DC.Title" content="Perl in a Nutshell, 2nd Edition" /><meta name="DC.Type" content="Text.Monograph" /></head><body bgcolor="#ffffff"><img src="gifs/smbanner.gif" usemap="#banner-map" border="0" alt="Book Home" /><map name="banner-map"><area shape="rect" coords="1,-2,616,66" href="index.htm" alt="Java and XSLT" /><area shape="rect" coords="629,-11,726,25" href="jobjects/fsearch.htm" alt="Search this book" /></map><div class="navbar"><table width="684" border="0"><tr><td align="left" valign="top" width="228"><a href="ch10_05.htm"><img src="../gifs/txtpreva.gif" alt="Previous" border="0" /></a></td><td align="center" valign="top" width="228" /><td align="right" valign="top" width="228"><a href="ch10_07.htm"><img src="../gifs/txtnexta.gif" alt="Next" border="0" /></a></td></tr></table></div><h2 class="sect1">10.6. Debugging</h2><p><a name="INDEX-1664" /><a name="INDEX-1665" /><a name="INDEX-1666" />Acomplication of writing CGI scripts is that when debugging thescript, you have to wrestle with the web server environment. CGI.pmprovides support for debugging the script on the command line.</p><p>If you run the script on the command line without arguments, you willbe placed into an "offline" mode,in which name/value pairs can be entered one-by-one. When you pressCtrl-D, the script runs. For example:</p><blockquote><pre class="code">% birthday(offline mode: enter name=value pairs on standard input)birthday=6/4/65^DContent-type: text/html<P>Your birthday is 6/4/65.</P></pre></blockquote><p>You can also supply the name/value parameters directly on the commandline. For example:</p><blockquote><pre class="code">% test birthday=6/4/65Content-type: text/html<P>Your birthday is 6/4/65.</P></pre></blockquote><p>Multiple values can be separated by spaces (as separate arguments onthe command line) or by ampersands (as in URL-encoded syntax). Infact, you can use URL-encoded syntax on the command line. This makesit easy to supply raw CGI input to the script for testing purposes.Just remember to protect the ampersand from the shell.</p><blockquote><pre class="code">% test 'birthday=6%2f4%2f65&name=Fred%20Flintstone'Content-type: text/html<P>Fred Flintstone, your birthday is 6/4/65.</P></pre></blockquote><hr width="684" align="left" /><div class="navbar"><table width="684" border="0"><tr><td align="left" valign="top" width="228"><a href="ch10_05.htm"><img src="../gifs/txtpreva.gif" alt="Previous" border="0" /></a></td><td align="center" valign="top" width="228"><a href="index.htm"><img src="../gifs/txthome.gif" alt="Home" border="0" /></a></td><td align="right" valign="top" width="228"><a href="ch10_07.htm"><img src="../gifs/txtnexta.gif" alt="Next" border="0" /></a></td></tr><tr><td align="left" valign="top" width="228">10.5. Using JavaScript Features</td><td align="center" valign="top" width="228"><a href="index/index.htm"><img src="../gifs/index.gif" alt="Book Index" border="0" /></a></td><td align="right" valign="top" width="228">10.7. CGI.pm Reference</td></tr></table></div><hr width="684" align="left" /><img src="../gifs/navbar.gif" usemap="#library-map" border="0" alt="Library Navigation Links" /><p><p><font size="-1"><a href="copyrght.htm">Copyright © 2002</a> O'Reilly & Associates. All rights reserved.</font></p><map name="library-map"><area shape="rect" coords="1,0,85,94" href="../index.htm"><area shape="rect" coords="86,1,178,103" href="../lwp/index.htm"><area shape="rect" coords="180,0,265,103" href="../lperl/index.htm"><area shape="rect" coords="267,0,353,105" href="../perlnut/index.htm"><area shape="rect" coords="354,1,446,115" href="../prog/index.htm"><area shape="rect" coords="448,0,526,132" href="../tk/index.htm"><area shape="rect" coords="528,1,615,119" href="../cookbook/index.htm"><area shape="rect" coords="617,0,690,135" href="../pxml/index.htm"></map></body></html>⌨️ 快捷键说明
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