如何从动态服务器端 URL 加载 Java 小程序？

发布于 2024-08-17 15:26:08 字数 187 浏览 4 评论 0原文

我想从服务器端脚本加载小程序，例如。 Perl CGI 程序等。这可以完成吗？如何？

<applet code=A21 width=256 height=256 archive="http://url/cgi-bin/test.cgi?R=applet">

预先感谢您的所有帮助。

原文

I want to load an applet from a server side script, eg. a Perl CGI program, etc. Can this be done? how?

<applet code=A21 width=256 height=256 archive="http://url/cgi-bin/test.cgi?R=applet">

thanks in advance for all help.

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酒与心事 2024-08-24 15:26:08

我已经很长时间没有这样做了（所以安全模型可能已经改变了），但诀窍是配置服务器来处理一些翻译。假设您有 URL：

 http://example.com/applets/MyCode/1.0

您设置了 URL 转换，以便使用 CGI 脚本处理 http://example.com/applets，然后获取 /MyCode/1.0 em> 作为PATH_INFO。你需要归还什么就归还什么。

你为什么要这样做？

I haven't done this is a long time (so the security model might have changed on me), but the trick was to configure the server to handle some translation. Say that you have the URL:

 http://example.com/applets/MyCode/1.0

You set up the URL translation such that you handle http://example.com/applets with your CGI script, which then gets /MyCode/1.0 as PATH_INFO. You return whatever you need to return.

Why do you want to do this?

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歌入人心 2024-08-24 15:26:08

我能够实现这一点。我使用的机制是将 cgi 脚本文件包装在 shell 脚本中。这个包装器调用 cgi 脚本，然后它将带有特殊请求的原始 URL 嵌入到它作为小程序的页面中。然后该脚本将再次运行并检测此特殊请求。它会在没有任何输出的情况下中断，但会返回一个 shellscript 捕获并输出 jar/classfile 的值。

Fetch.sh

run_the_cgi_script.cgi

案例 $?在

0) #normal script operation without special requests
   #do nothing more
;; 

1) #a special request that maps to Test3.class
echo "Content-type: application/java-archive"
echo ""
cat ./$myDIR/Test3.class;;

2) #a special request that maps to someclass.class
echo "Content-type: application/java-archive"
echo ""
cat ./$myDIR/someclass.class;;

3) #a special request that maps to somejar.jar
echo "Content-type: application/java-archive"
echo ""
cat ./$myDIR/somejar.jar;;

esac

I was able achived this. The mechanism I used was that the cgi script file was wrapped in a shell script. This wrapper calls the cgi script and it would then then embed the original url with a special request in the page it served as the applet. The script would then get run again and detect this special request. It would break without any output but with a return value that the shellscript would catch and output the jar/classfile.

Fetch.sh

run_the_cgi_script.cgi

case $? in

0) #normal script operation without special requests
   #do nothing more
;; 

1) #a special request that maps to Test3.class
echo "Content-type: application/java-archive"
echo ""
cat ./$myDIR/Test3.class;;

2) #a special request that maps to someclass.class
echo "Content-type: application/java-archive"
echo ""
cat ./$myDIR/someclass.class;;

3) #a special request that maps to somejar.jar
echo "Content-type: application/java-archive"
echo ""
cat ./$myDIR/somejar.jar;;

esac

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