获取网络图片
[cpp] view plain copy
- 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
[cpp] view plain copy
- 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;
//下载文件并保存为新文件名 #include <afx.h> #include <afxinet.h> #define RECVPACK_SIZE 2048 boolDownloadSaveFiles(char* url,char*strSaveFile) {//下载文件并保存为新文件名 boolret=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 DWORDdwFlag = INTERNET_FLAG_TRANSFER_BINARY|INTERNET_FLAG_DONT_CACHE|INTERNET_FLAG_RELOAD ; CHttpFile* cFile = NULL; char*pBuf = NULL; intnBufLen = 0 ; do{ try{ cFile = (CHttpFile*)Sess.OpenURL(url,1,dwFlag); DWORDdwStatusCode; cFile->QueryInfoStatusCode(dwStatusCode); if(dwStatusCode == HTTP_STATUS_OK) { //查询文件长度 DWORDnLen=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 intn = 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(); deletecFile; } returnret; } intmain() { DownloadSaveFiles("http://www.nirsoft.net/utils/nircmd.zip","d:\\cppdld_nircmd.zip"); return0; }
