为什么在 Tomcat 中使用 Python CGI 时出现空白页

Question

I just began to learn Python CGI, but I did not make it even to testing the simplest Python CGI program.我刚开始学习 Python CGI，但我什至没有完成测试最简单的 Python CGI 程序。

I use Tomcat 6.0.我使用 Tomcat 6.0。 I have already deleted the comments in web.xml and also added <Context privileged="true"> .我已经删除了web.xml中的评论，还添加了<Context privileged="true"> 。 In web.xml , I gave the "cgiPathPrefix" the value "cgi-bin", and I added this cgi-bin folder in the webapps/ROOT directory.在web.xml中，我将“cgiPathPrefix”的值设置为“cgi-bin”，并在webapps/ROOT目录中添加了这个cgi-bin文件夹。

The cgi program is simple; cgi程序很简单； as follows with the name test.cgi :名称如下test.cgi ：

#!/usr/bin/python

print("Content-type: text/html")
print()
print("<title>CGI 101</title>")
print("<h1>A First CGI Example</h1>")
print("<P>Hello, CGI World!</p>")

When I go to http://localhost:8080/cgi-bin/test.cgi , I just get a blank page.当我 go 到http://localhost:8080/cgi-bin/test.cgi时，我只是得到一个空白页。

What's wrong with this setup?这个设置有什么问题？

Answer 1

I had the same problem in a different context.我在不同的上下文中遇到了同样的问题。 Basically, I think the OP's issue was solved in the comments to the question, by eryksun, with the suggestion:基本上，我认为 eryksun 在对问题的评论中解决了 OP 的问题，并提出了以下建议：

Is the executable parameter set to an empty string?可执行参数是否设置为空字符串？

Using Tomcat 7.0 I had everything set up so that the server did not produce any errors on startup, and it allowed me to request from the WEB-INF/cgi with a 200 "OK" response, but it gave a blank html page, just like the OP noted.使用 Tomcat 7.0 我设置了所有内容，以便服务器在启动时不会产生任何错误，它允许我从 WEB-INF/cgi 请求一个 200“OK”响应，但它给出了一个空白的 html 页面，只是就像OP指出的那样。

The solution was to extend the default parameters to the conf/web.xml:解决方案是将默认参数扩展到 conf/web.xml：

<servlet>
    <servlet-name>cgi</servlet-name>
    <servlet-class>org.apache.catalina.servlets.CGIServlet</servlet-class>
    <init-param>
      <param-name>debug</param-name>
      <param-value>0</param-value>
    </init-param>
    <init-param>
      <param-name>cgiPathPrefix</param-name>
      <param-value>WEB-INF/cgi</param-value>
    </init-param>
    **<init-param>
      <param-name>executable</param-name>
      <param-value>c:\myexact\path\to\perl.exe</param-value>
    </init-param>
    <init-param>
      <param-name>passShellEnvironment </param-name>
      <param-value>true</param-value>
    </init-param>**
<load-on-startup>5</load-on-startup>

</servlet>

My additions are bolded (**) above.我的补充在上面加粗（**）。

Basically the critical info comes from the source suggested by eryksun:基本上，关键信息来自 eryksun 建议的来源：

http://tomcat.apache.org/tomcat-7.0-doc/cgi-howto.html http://tomcat.apache.org/tomcat-7.0-doc/cgi-howto.html

Answer 2

Your sample code is not proper HTML.您的示例代码不正确 HTML。 You need at least你至少需要

 <html>,<head> and <body>

tags.标签。

If adding those does not heal the problem then it is a problem with your server configuration and probably the question is more suitable to serverfault.com how to debug what's wrong with your Tomcat.如果添加这些不能解决问题，那么这是您的服务器配置的问题，并且问题可能更适合 serverfault.com 如何调试您的 Tomcat 出了什么问题。

为什么在 Tomcat 中使用 Python CGI 时出现空白页

问题描述

2 个解决方案

解决方案1
1 2012-04-25 00:28:55

解决方案2
-2 2011-08-12 13:34:03

为什么在 Tomcat 中使用 Python CGI 时出现空白页

问题描述

2 个解决方案

解决方案1 1 2012-04-25 00:28:55

解决方案2 -2 2011-08-12 13:34:03

解决方案1
1 2012-04-25 00:28:55

解决方案2
-2 2011-08-12 13:34:03