读取后 进行字符串分割
Http访问有两种方式，GET和POST，就编程来说GET方式相对简单点，它不用向服务器提交数据，程序中使用POST方式，
提交数据并从服务器获取返回值。
为实现Http访问，微软提供了二套API：WinINet, WinHTTP。WinHTTP比WinINet更加安全和健壮，可以这么认为WinHTTP是WinINet的升级版本。
程序中，通过一个宏的设置来决定是使用WinHttp还是WinINet。
#define USE_WINHTTP //Comment this line to user wininet.
下面来说说实现Http访问的流程（两套API都一样的流程）：
1， 首先我们打开一个Session获得一个HINTERNET session句柄；
2， 然后我们使用这个session句柄与服务器连接得到一个HINTERNET connect句柄；
3， 然后我们使用这个connect句柄来打开Http 请求得到一个HINTERNET request句柄；
4， 这时我们就可以使用这个request句柄来发送数据与读取从服务器返回的数据；
5， 最后依次关闭request，connect，session句柄。
/***********************定义HTTP发送所用方法***********************************/
HINTERNET OpenSession(LPCWSTR userAgent = 0)
{
#ifdef USE_WINHTTP
return WinHttpOpen(userAgent, NULL, NULL, NULL, NULL)
#else
return InternetOpen(userAgent, INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0)
#endif
}
HINTERNET Connect(HINTERNET hSession, LPCWSTR serverAddr, int portNo)
{
#ifdef USE_WINHTTP
return WinHttpConnect(hSession, serverAddr, (INTERNET_PORT) portNo, 0)
#else
return InternetConnect(hSession, serverAddr, portNo, NULL, NULL, INTERNET_SERVICE_HTTP, 0, 0)
#endif
}
HINTERNET OpenRequest(HINTERNET hConnect, LPCWSTR verb, LPCWSTR objectName, int scheme)
{
DWORD flags = 0
#ifdef USE_WINHTTP
if (scheme == INTERNET_SCHEME_HTTPS) {
flags |= WINHTTP_FLAG_SECURE
}
return WinHttpOpenRequest(hConnect, verb, objectName, NULL, NULL, NULL, flags)
#else
if (scheme == INTERNET_SCHEME_HTTPS) {
flags |= INTERNET_FLAG_SECURE
}
return HttpOpenRequest(hConnect, verb, objectName, NULL, NULL, NULL, flags, 0)
#endif
}
BOOL AddRequestHeaders(HINTERNET hRequest, LPCWSTR header)
{
SIZE_T len = lstrlenW(header)
#ifdef USE_WINHTTP
return WinHttpAddRequestHeaders(hRequest, header, DWORD(len), WINHTTP_ADDREQ_FLAG_ADD)
#else
return HttpAddRequestHeaders(hRequest, header, DWORD(len), HTTP_ADDREQ_FLAG_ADD)
#endif
}
BOOL SendRequest(HINTERNET hRequest, const void* body, DWORD size)
{
#ifdef USE_WINHTTP
return WinHttpSendRequest(hRequest, 0, 0, const_cast<void*>(body), size, size, 0)
#else
return HttpSendRequest(hRequest, 0, 0, const_cast<void*>(body), size)
#endif
}
BOOL EndRequest(HINTERNET hRequest)
{
#ifdef USE_WINHTTP
return WinHttpReceiveResponse(hRequest, 0)
#else
// if you use HttpSendRequestEx to send request then use HttpEndRequest in here!
return TRUE
#endif
}
BOOL QueryInfo(HINTERNET hRequest, int queryId, char* szBuf, DWORD* pdwSize)
{
#ifdef USE_WINHTTP
return WinHttpQueryHeaders(hRequest, (DWORD) queryId, 0, szBuf, pdwSize, 0)
#else
return HttpQueryInfo(hRequest, queryId, szBuf, pdwSize, 0)
#endif
}
BOOL ReadData(HINTERNET hRequest, void* buffer, DWORD length, DWORD* cbRead)
{
#ifdef USE_WINHTTP
return WinHttpReadData(hRequest, buffer, length, cbRead)
#else
return InternetReadFile(hRequest, buffer, length, cbRead)
#endif
}
void CloseInternetHandle(HINTERNET hInternet)
{
if (hInternet)
{
#ifdef USE_WINHTTP
WinHttpCloseHandle(hInternet)
#else
InternetCloseHandle(hInternet)
#endif
}
}
/**********************************************************/
///通过Http方式发送短信
string SendSMS_HTTP(const long ececcid,const string & password ,const string & msisdn, const string &smsContent)
{
string rtnStr ="-1"
HINTERNET hSession = 0
HINTERNET hConnect = 0
HINTERNET hRequest = 0
wstring strHeader(L"Content-type: application/x-www-form-urlencoded\r\n")
// Test data
CrackedUrl crackedUrl(L"http://pi.f3.cn/SendSMS.aspx")
string StrPostData = "ececcid=600000&password="+password+"&msisdn="+msisdn+"&smscontent="+smsContent+"&msgtype=5&longcode="
StrPostData = string_To_UTF8(StrPostData)
// Open session.
hSession = OpenSession(L"HttpPost by lyz_sea@163.com")
if (hSession == NULL) {
cout<<"Error:Open session!\n"
return "-1"
}
// Connect.
hConnect = Connect(hSession, crackedUrl.GetHostName(), crackedUrl.GetPort())
if (hConnect == NULL) {
cout<<"Error:Connect failed!\n"
return "-1"
}
// Open request.
hRequest = OpenRequest(hConnect, L"POST", crackedUrl.GetPath(), crackedUrl.GetScheme())
if (hRequest == NULL) {
cout<<"Error:OpenRequest failed!\n"
return "-1"
}
// Add request header.
if (!AddRequestHeaders(hRequest, strHeader.c_str())) {
cout<<"Error:AddRequestHeaders failed!\n"
return "-1"
}
// Send post data.
if (!SendRequest(hRequest, StrPostData.c_str(), StrPostData.length())) {
cout<<"Error:SendRequest failed!\n"
return "-1"
}
// End request
if (!EndRequest(hRequest)) {
cout<<"Error:EndRequest failed!\n"
return "-1"
}
char szBuf[BUF_SIZE]
DWORD dwSize = 0
szBuf[0] = 0
// Query header info.
#ifdef USE_WINHTTP
int contextLengthId = WINHTTP_QUERY_CONTENT_LENGTH
int statusCodeId = WINHTTP_QUERY_STATUS_CODE
int statusTextId = WINHTTP_QUERY_STATUS_TEXT
#else
int contextLengthId = HTTP_QUERY_CONTENT_LENGTH
int statusCodeId = HTTP_QUERY_STATUS_CODE
int statusTextId = HTTP_QUERY_STATUS_TEXT
#endif
dwSize = BUF_SIZE
if (QueryInfo(hRequest, contextLengthId, szBuf, &dwSize)) {
szBuf[dwSize] = 0
cout<<"Content length: "<<szBuf<<endl
}
dwSize = BUF_SIZE
if (QueryInfo(hRequest, statusCodeId, szBuf, &dwSize)) {
szBuf[dwSize] = 0
cout<<"Status code: "<< szBuf<<endl
}
dwSize = BUF_SIZE
if (QueryInfo(hRequest, statusTextId, szBuf, &dwSize)) {
szBuf[dwSize] = 0
cout<<"Status text:"<<szBuf<<endl
}
// read data.
for () {
dwSize = BUF_SIZE
if (ReadData(hRequest, szBuf, dwSize, &dwSize) == FALSE) {
break
}
if (dwSize <= 0) {
break
}
szBuf[dwSize] = 0
rtnStr =::UTF8_To_string(string(szBuf))
cout<<rtnStr<<endl//Output 返回值
}
CloseInternetHandle(hRequest)
CloseInternetHandle(hConnect)
CloseInternetHandle(hSession)
return rtnStr
}
以上方法中用到的CrackURL方法在以下CrackURL.h文件中：
#pragma once
//#include<iostream>
//using namespace std
#define USE_WINHTTP //Comment this line to user wininet.
#ifdef USE_WINHTTP
#include <winhttp.h>
#pragma comment(lib, "winhttp.lib")
#else
#include <wininet.h>
#pragma comment(lib, "wininet.lib")
#endif
// CrackedUrl
class CrackedUrl {
int m_scheme
wstring m_host
int m_port
wstring m_path
public:
CrackedUrl(LPCWSTR url)
{
URL_COMPONENTS uc = { 0}
uc.dwStructSize = sizeof(uc)
const DWORD BUF_LEN = 256
WCHAR host[BUF_LEN]
uc.lpszHostName = host
uc.dwHostNameLength = BUF_LEN
WCHAR path[BUF_LEN]
uc.lpszUrlPath = path
uc.dwUrlPathLength = BUF_LEN
WCHAR extra[BUF_LEN]
uc.lpszExtraInfo = extra
uc.dwExtraInfoLength = BUF_LEN
#ifdef USE_WINHTTP
if (!WinHttpCrackUrl(url, 0, ICU_ESCAPE, &uc)) {
cout<<"Error:WinHttpCrackUrl failed!\n"
}
#else
if (!InternetCrackUrl(url, 0, ICU_ESCAPE, &uc)) {
printf("Error:InternetCrackUrl failed!\n")
}
#endif
m_scheme = uc.nScheme
m_host = host
m_port = uc.nPort
m_path = path
}
int GetScheme() const
{
return m_scheme
}
LPCWSTR GetHostName() const
{
return m_host.c_str()
}
int GetPort() const
{
return m_port
}
LPCWSTR GetPath() const
{
return m_path.c_str()
}
static string UrlEncode(const char* p)
{
if (p == 0) {
return string()
}
string buf
for () {
int ch = (BYTE) (*(p++))
if (ch == '\0') {
break
}
if (isalnum(ch) || ch == '_' || ch == '-' || ch == '.') {
buf += (char)ch
}
else if (ch == ' ') {
buf += '+'
}
else {
char c[16]
wsprintfA(c, "%%%02X", ch)
buf += c
}
}
return buf
}
}
python中没有三目运算，但是有点类似三目运算:
result if True / False else fresult if为真时候结果为result,为假的时候结果为fresult
例子：
result = 'test' if True else 'not test' # result = 'test'result = 'test' if False else 'not test' # result = 'not test'
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