ajax´«Öµ¸øCGI,µ«CGIµÃ²»µ½Êý¾Ý

ÔÚfunction lb(i)ÖмÓÈëalert(x_url)Äܵõ½ÕýÈ·µÄÖµ"bbs_get_grouplist?gn=1&lb=1"
µ«ajax´«»ØÀ´µÄֵʼÖÕÊÇ"aaaaaaaaaaa",²»ÖªµÀÊÇʲôԭÒò¡£

main(){
printf("%s","Content-type:text/html;charset=UTF-8;\n\n");
if(getenv("CONTENT-LENGTH")){
int n=atoi(getenv("CONTENT_LENGTH"));
printf("%d",n);
}
else{
printf("%s","aaaaaaaaaaa");
}
}


function lb(i){
var x_lb=document.getElementById("bbs_group1").value;
var x_url="bbs_get_grouplist?gn="+i+"&lb="+x_lb;
if(!req)requestCreate();
if(req){
req.open("GET" , x_url , true);
req.onreadystatechange=function(){if(req.readyState==4 && req.status==200)alert(req.responseText);}
req.send(null);
}
}

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POSTʱºòÔÙ¼ì²éCONTENT_LENGTH

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GET·½·¨Ö±½Ó¶ÁÈ¡
QUERY_STRING¼´¿É

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¸øÄãÒ»¸öcдµÄcgi demo,¹ØÓÚ»·¾³±äÁ¿µÄ,Ó¦¸Ã¶ÔÒ»ÓÐÓÃ.
C/C++ code:

// cgi-demo.c: Simple CGI demo program.
// Vers. 2.00 - 04.April 2007
// k.d.walter@t-online.de

// Includes

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main (int argc, char *argv[])
{
char *pEnvPtr;

printf ("