测试网址为：http://www.exam8.com/

测试网址ip：222.73.24.32

测试帐号：lzh_5

密码：123456789

首先要确定提交表单的信息，我用抓包工具抓了post的包，然后写程序模拟发送过程，实现了登录过程。

注意事项：

1.一定要按照抓包的信息发送，甚至空格、换行数都要一样；

2.模拟登录的网页没有验证码；

代码：

//post提交表单申请帐号
#include<stdio.h>
#include<string>
#include<winsock2.h>
#include<windows.h>
#include<iostream>
#include<fstream>
#pragma comment(lib, "ws2_32.lib")

#define max 20480

using namespace std;

int main()
{
	int num,sum;

	SOCKET s;
	WSADATA wsa;
	struct sockaddr_in serv;

	char sndBuf[max], rcvBuf[max];

	WSAStartup(MAKEWORD(2, 1), &wsa);

	if ((s = socket(AF_INET, SOCK_STREAM, 0))<0)
	{
		perror("socket error!");
		exit(1);
	}

	memset(&serv,0,sizeof(serv));
	serv.sin_family = AF_INET;
	serv.sin_port = htons(80);
	//serv.sin_addr.s_addr = *((int*)*host_addr->h_addr_list);
	serv.sin_addr.S_un.S_addr = inet_addr("222.73.24.32");

	if ((connect(s, (struct sockaddr *)&serv, sizeof(serv)))<0)
	{
		perror("connet error!");
		exit(1);
	}

	memset(sndBuf, 0, max);
	memset(rcvBuf, 0, max);

	//头信息
    strcat(sndBuf, "POST ");
    strcat(sndBuf, "/inc/Check.asp HTTP/1.1\r\n");
    strcat(sndBuf, "x-requested-with: XMLHttpRequest\r\n");
	strcat(sndBuf, "Accept-Language: zh-cn\r\n");
    strcat(sndBuf, "Referer: http://reg.exam8.com/");
    strcat(sndBuf, "\r\n");
	strcat(sndBuf, "Accept: */*\r\n");
	strcat(sndBuf, "Content-Type: application/x-www-form-urlencoded\r\n");
	strcat(sndBuf, "Accept-Encoding: gzip, deflate\r\n");
	strcat(sndBuf, "User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; eSobiSubscriber 1.0.0.40; MAAR; .NET4.0C; .NET4.0E; Maxthon/3.0)\r\n");
	strcat(sndBuf, "Host: reg.exam8.com\r\n");
	strcat(sndBuf, "Content-Length: 149\r\n");
	strcat(sndBuf, "Connection: Keep-Alive\r\n");
	strcat(sndBuf, "Cache-Control: no-cache\r\n");
	strcat(sndBuf, "Cookie: referrer=http%3A//www.baidu.com/s%3Fwd%3D%25e8%2580%2583%25e8%25af%2595%25e5%2590%25a7%26rsv_spt%3D1%26issp%3D1%26f%3D3%26rsv_bp%3D0%26rsv_idx%3D2%26ie%3Dutf-8%26tn%3Dmaxthon2%26rsv_sug3%3D3%26rsv_sug4%3D126%26rsv_sug1%3D1%26oq%3Dkaoshi%26rsp%3D0%26rsv_sug5%3D0; Hm_lvt_80e97646f045b0632f81239c03c83492=1415795254,1415797440,1415889057; ASPSESSIONIDAAQSATDS=LHOBCKMCKEKNEBEHLLHMPHAB\r\n");
	strcat(sndBuf, "\r\n");
	strcat(sndBuf, "ComeUrl=http%3A//\r\n");
	strcat(sndBuf, "user.exam8.com&RegUserName=lzh_5&RegUserPassword=123456789&RegPwdConfirm=123456789&RegEmail=664611073@qq.com&checkbox1=&Action=reg");
	

	puts(sndBuf);
  
	if ((num = send(s,sndBuf,max, 0))<0)
    {
		perror("send error!");
		exit(1);
	}
	
	puts("send success!\n");

	sum = recv(s, rcvBuf, max-1, 0);//如果rcvBuf的存储空间减小，则分几次copy
	
	if(sum>0)
	{
		puts("OK!"); 
		printf("%s",rcvBuf);
	}
	
	puts("\nread success!\n");
	
	closesocket(s);

	system("pause");
	WSACleanup();
	
	return 0;

}

1.提交给网站的表单信息

2.网页的返回信息

3.申请成功后返回信息

4.在此运行此程序返回信息

C++实现申请帐号---发送post提交表单信息包