apache模块开发

解决公司jboss集群的问题，开始学习apache模块开发，开发的平台采用windows平台，是希望大家更加容易能够进入开发阶段，公司大部分都有vs2008.

1.安装apache 安装包 httpd-2.2.21-win32-x86-no_ssl.msi
   一定要custom全部安装，否则就不会有include和lib目录

2.配置apxs
  1)安装apxs            安装包apxs_win32
  2)安装Strawberry Perl 安装包strawberry-perl-5.16.3.1-32bit.msi
  3)进入dos命令提示符，转到apxs安装目录下，输入perl Configure.pl，按要求填写apache的安装目录...\apache2.2和命令名称“httpd.exe”
  4)通过上一步，就会在apache2.2\bin下生成apxs命令，并且在apache2.2目录下生成了build目录
  5)修改在apache2.2下build目录中的config_vars.mk文件
    将CC = gcc 的gcc改为cl.exe ，LD = g++的g++改为link.exe，CPP = gcc-E的gcc-E删掉
  6)设置apache下的bin的命令apxs的路径为环境变量，以放便在不进入具体安装目录下运行apxs

3.编译apache模块
   1)运行Visual Studio 2008 命令提示(在开始的Microsoft Visual Studio 2008下可以找到)
   2)运行apxs -g -n helloworld(helloworld为模块名),会生成一个叫helloworld的目录和模板代码
   3)进入helloworld目录，编辑mod_helloworld.c
   4)运行apxs -c -i -a mod_helloworld.c libapr-1.lib libaprutil-1.lib libapriconv-1.lib libhttpd.lib，生成mod_helloworld.so
   5)将mod_helloworld.so拷贝到Apache2.2\modules下
   6)修改Apache2.2\conf\httpd.conf，在末尾加上
     LoadModule helloworld_module \modules\mod_helloworld.so 
    
  setHandler helloworld
    
    
   7)启动apache，在IE里输入http://loacalhost/helloworld

 

/* 
**  mod_helloworld.c -- Apache sample helloworld module
**  [Autogenerated via ``apxs -n helloworld -g'']
**
**  To play with this sample module first compile it into a
**  DSO file and install it into Apache's modules directory 
**  by running:
**
**    $ apxs -c -i mod_helloworld.c
**
**  Then activate it in Apache's httpd.conf file for instance
**  for the URL /helloworld in as follows:
**
**    #   httpd.conf
**    LoadModule helloworld_module modules/mod_helloworld.so
**    
**    SetHandler helloworld
**    
**
**  Then after restarting Apache via
**
**    $ apachectl restart
**
**  you immediately can request the URL /helloworld and watch for the
**  output of this module. This can be achieved for instance via:
**
**    $ lynx -mime_header http://localhost/helloworld 
**
**  The output should be similar to the following one:
**
**    HTTP/1.1 200 OK
**    Date: Tue, 31 Mar 1998 14:42:22 GMT
**    Server: Apache/1.3.4 (Unix)
**    Connection: close
**    Content-Type: text/html
**  
**    The sample page from mod_helloworld.c
*/ 

#include "httpd.h"
#include "http_config.h"
#include "http_protocol.h"
#include "ap_config.h"


static int printitem(void *rec,const char *key,const char *value)
{
	request_rec *r = rec;
	ap_rprintf(r,"%s%s\n",ap_escape_html(r->pool,key),ap_escape_html(r->pool,value));

	return 1;
	

}

static void printtable(request_rec *r,apr_table_t *t,const char *caption,const char *keyhead,const char *valhead)
{

	ap_rprintf(r,"
%s
%s%s",caption,keyhead,valhead);
	apr_table_do(printitem,r,t,NULL);
	ap_rputs("\n",r);

}
/* The sample content handler */
static int helloworld_handler(request_rec *r)
{
	ap_set_content_type(r,"text/html;charset=ascii");
	ap_rputs("\n"
		"
apache is back
",r);
	
	printtable(r,r->headers_in,"request headers","header","value");
	printtable(r,r->headers_out,"response headers","header","value");

	ap_rputs("apache module develop from ibyoung.c\n", r);

    if (strcmp(r->handler, "helloworld")) {
        return DECLINED;
    }
    r->content_type = "text/html";      

    if (!r->header_only)
        ap_rputs("run success.c\n", r);


	ap_rputs("",r);
    return OK;
}

static void helloworld_register_hooks(apr_pool_t *p)
{
    ap_hook_handler(helloworld_handler, NULL, NULL, APR_HOOK_MIDDLE);
}

/* Dispatch list for API hooks */
module AP_MODULE_DECLARE_DATA helloworld_module = {
    STANDARD20_MODULE_STUFF, 
    NULL,                  /* create per-dir    config structures */
    NULL,                  /* merge  per-dir    config structures */
    NULL,                  /* create per-server config structures */
    NULL,                  /* merge  per-server config structures */
    NULL,                  /* table of config file commands       */
    helloworld_register_hooks  /* register hooks                      */
};