C++实现Http Post请求
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参考资料:
http://apps.hi.baidu.com/share/detail/39003388
http://blog.csdn.net/yc0188/article/details/4741871
http://bbs.chinaunix.net/thread-2094334-1-1.html
//头文件
#include <iostream>
#include <string>
#include <Winsock2.h>
using namespace std;
//函数声明
int request(char* hostname, char* api, char* parameters);
//方法调用
int _tmain(int argc, TCHAR* argv[], TCHAR* envp[])
{
int nRetCode = 0;
// initialize MFC and print and error on failure
if (!AfxWinInit(::GetModuleHandle(NULL), NULL, ::GetCommandLine(), 0))
{
// TODO: change error code to suit your needs
_tprintf(_T("Fatal Error: MFC initialization failed\n"));
return 1;
}
request("reg.163.com", "http://reg.163.com/CheckUser.jsp", "test");
return nRetCode;
}
//函数实现
int request(char* hostname, char* api, char* parameters)
{
WSADATA WsaData;
WSAStartup(0x0101, &WsaData);
//初始化socket
struct hostent* host_addr = gethostbyname(hostname);
if (host_addr == NULL)
{
cout<<"Unable to locate host"<<endl;
return -103;
}
sockaddr_in sin;
sin.sin_family = AF_INET;
sin.sin_port = htons((unsigned short)80);
sin.sin_addr.s_addr = *((int*)*host_addr->h_addr_list);
int sock = socket(AF_INET, SOCK_STREAM, 0);
if (sock == -1)
{
return -100;
}
//建立连接
if (connect(sock, (const struct sockaddr *)&sin, sizeof(sockaddr_in) ) == -1)
{
cout<<"connect failed"<<endl;
return -101;
}
//初始化发送信息
char send_str[2048] = {0};
//头信息
strcat(send_str, "POST ");
strcat(send_str, api);
strcat(send_str, " HTTP/1.1\r\n");
strcat(send_str, "Host: ");
strcat(send_str, hostname);
strcat(send_str, "\r\n");
strcat(send_str, "Connection: keep-alive\r\n");
char content_header[100];
sprintf(content_header,"Content-Length: %d\r\n", strlen(parameters));
strcat(send_str, content_header);
strcat(send_str, "Cache-Control: max-age=0\r\n");
strcat(send_str, "Origin: http://www.hao123.com\r\n");
strcat(send_str, "User-Agent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/535.1 (KHTML, like Gecko) Chrome/15.0.849.0 Safari/535.1\r\n");
strcat(send_str, "Content-Type: application/x-www-form-urlencoded\r\n");
strcat(send_str, "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n");
strcat(send_str, "Referer: http://www.hao123.com/\r\n");
strcat(send_str, "Accept-Encoding: gzip,deflate,sdch\r\n");
strcat(send_str, "Accept-Language: zh-CN,zh;q=0.8\r\n");
//内容信息
strcat(send_str, "\r\n");
strcat(send_str, parameters);
if (send(sock, send_str, strlen(send_str),0) == -1)
{
cout<<"send failed"<<endl;
return -101;
}
//获取返回信息
char recv_str[4096] = {0};
if (recv(sock, recv_str, sizeof(recv_str), 0) == -1)
{
cout<<"recv failed"<<endl;
return -101;
}
cout<<recv_str<<endl;
WSACleanup( );
return 0;
}
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