Home php教程 php手册 在C++Builder中开发CGI的一点点体会

在C++Builder中开发CGI的一点点体会

Jun 21, 2016 am 09:12 AM
cgi exe nbsp response

c++|cgi

汗ing。。。这点点体会是面向新手的,高手可以不看。
我对php的了解还不够深入,所以有时碰到用php一时没法解决的问题就求助于顺手的开发工具来做cgi了,而且安全性和稳定性也很容易提高,exe的程序也只是几十kb而已,速度还是可以的,如果做成dll,那么速度也是很快的。

一、根据页面请求方法的不同,获取传入数据有两种方法:
1、如果是POST方法:
例:提交表单中有一个文本框名叫 tName
   那么在C++Builder中就应该如下获取:
      AnsiString s = Request->ContentFields->Values[AnsiString("tName")];
      Response->Content = s;
      Response->SendResponse();

2、如果是GET方法:
例:URL请求:http://localhost/cgi-bin/xxx.exe/reg?abc=123
   那么在C++Builder中就应该如下获取:
      AnsiString s = Request->QueryFields->Values[AnsiString("abc")];
      Response->Content = s;
      Response->SendResponse();

二、由于编译后是可执行代码,所以扩展名是什么都无所谓,只要放在可执行的cgi目录就可以了,例如我有个cgi文件是prj.exe,把cgi目录设置为只读、可执行、不能浏览等,那么我把prj.exe文件改为prj.html或prj.cgi都能正常应用,安全性无形中提高了一些。

三、用c++builder开发的cgi可以响应多个不同的请求,用路径标识来区分,这些路径是虚拟的,实际上不存在的,只在当前可执行文件中存在,例如这样:
http://localhost/cgi-bin/prj.exe/photo?id=1
http://localhost/cgi-bin/prj.exe/document?id=2
...
可以利用这一特性,把多个处理工作做在一个cgi中,呵呵,一个小小的exe文件就基本把所有工作都做完了。



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