http://blog.csdn.net/gnixuyil/article/details/7688439
获取网络图片
- CString URL="http://www.google.com.hk/images/srpr/logo3w.png"
- CInternetSession session;
- CHttpFile *httpFile = (CHttpFile *)session.OpenURL(URL);
- CStdioFile imgFile;
- char buff[1024]; // 缓存
- imgFile.Open("图片名字.png", CFile::modeCreate | CFile::modeWrite | CFile::typeBinary);
- DWORD dwStatusCode;
- httpFile->QueryInfoStatusCode(dwStatusCode);
- if(dwStatusCode == HTTP_STATUS_OK) {
- int size=0;
- do {
- size = httpFile->Read(buff,1024); // 读取图片
- imgFile.Write(buff,size);
- }while(size > 0);
- }
- httpFile->Close();
- session.Close();
获取URL的html
- CInternetSession session;
- CHttpFile *httpFile = (CHttpFile *)session.OpenURL(m_URL);
- DWORD dwStatusCode;
- httpFile->QueryInfoStatusCode(dwStatusCode);
- CString getdata=_T("");
- if(dwStatusCode == HTTP_STATUS_OK) {
- CString line_data=_T("");
- while(httpFile->ReadString(line_data)) {
- getdata += line_data; // 读取html
- }
- getdata.TrimRight();
- }
- httpFile->Close(); // html数据已经放在getdata中
- session.Close();
- // 如果 getdata 中保存的是UTF_8网页(可以看html的meta字段)
- strCoding cfm; // 编码转换类,详情请看下方连接
- string temp = (LPCSTR)getdata.GetBuffer(); // 网页数据,转换成string型
- string output;
- // UTF_8转GB2312,让MFC控件能显示
- cfm.UTF_8ToGB2312(output,(char *)temp.data(),strlen(temp.data()));
- // 若MFC字符集为Unicode的话,还需要将多字节转为宽字节
- temp = output;
- DWORD dwNum = MultiByteToWideChar (CP_ACP, 0, temp.c_str(), -1, NULL, 0);
- wchar_t *pwText;
- pwText = new wchar_t[dwNum];
- MultiByteToWideChar (CP_ACP, 0, temp.c_str(), -1, pwText, dwNum);
- // 取得转换后结果 m_data 用于显示
- m_data = pwText;
- delete []pwText;
编码转换类: http://blog.csdn.net/gnixuyil/article/details/7688469
//下载文件并保存为新文件名
#include <afx.h>#include <afxinet.h>#define RECVPACK_SIZE 2048bool DownloadSaveFiles(char* url,char *strSaveFile) {//下载文件并保存为新文件名
bool ret=false;
CInternetSession Sess("lpload");
Sess.SetOption(INTERNET_OPTION_CONNECT_TIMEOUT , 2000); //2秒的连接超时
Sess.SetOption(INTERNET_OPTION_SEND_TIMEOUT , 2000); //2秒的发送超时
Sess.SetOption(INTERNET_OPTION_RECEIVE_TIMEOUT , 2000); //2秒的接收超时
Sess.SetOption(INTERNET_OPTION_DATA_SEND_TIMEOUT , 2000); //2秒的发送超时
Sess.SetOption(INTERNET_OPTION_DATA_RECEIVE_TIMEOUT, 2000); //2秒的接收超时
DWORD dwFlag = INTERNET_FLAG_TRANSFER_BINARY|INTERNET_FLAG_DONT_CACHE|INTERNET_FLAG_RELOAD ;
CHttpFile* cFile = NULL;
char *pBuf = NULL;
int nBufLen = 0 ;
do {
try{
cFile = (CHttpFile*)Sess.OpenURL(url,1,dwFlag);
DWORD dwStatusCode;
cFile->QueryInfoStatusCode(dwStatusCode);
if (dwStatusCode == HTTP_STATUS_OK) {
//查询文件长度
DWORD nLen=0;
cFile->QueryInfo(HTTP_QUERY_CONTENT_LENGTH, nLen);
//CString strFilename = GetFileName(url,TRUE);
nBufLen=nLen;
if (nLen <= 0) break;//
//分配接收数据缓存
pBuf = (char*)malloc(nLen+8);
ZeroMemory(pBuf,nLen+8);
char *p=pBuf;
while (nLen>0) {
//每次下载8K
int n = cFile->Read(p,(nLen<RECVPACK_SIZE)?nLen:RECVPACK_SIZE);
//接收完成退出循环
if (n <= 0) break;//
//接收缓存后移
p+= n ;
//剩余长度递减
nLen -= n ;
}
//如果未接收完中断退出
if (nLen != 0) break;
//接收成功保存到文件
CFile file(strSaveFile, CFile::modeCreate | CFile::modeWrite);
file.Write(pBuf,nBufLen);
file.Close();
ret = true;
}
} catch(...) {
break;//
}
} while(0);
//释放缓存
if (pBuf) {
free(pBuf);
pBuf=NULL;
nBufLen = 0 ;
}
//关闭下载连接
if (cFile) {
cFile->Close();
Sess.Close();
delete cFile;
}
return ret;
}int main() {
DownloadSaveFiles("http://www.nirsoft.net/utils/nircmd.zip","d:\\cppdld_nircmd.zip");
return 0;
}