Windows MFC HTTP GET请求 函数流程
1 CString m_strHttpUrl(_T("http://10.200.80.86:8090/course/upload"))
2 CInternetSession * pInternetSession = NULL;
3 CHttpConnection * pHttpConnection = NULL;
4 CHttpFile * pHttpFile = NULL;
5
6
7 //建立连接
8 pInternetSession = new CInternetSession(AfxGetAppName());
9
10
11 CString strServer;
12 CString strObject;
13 DWORD dwServiceType;
14 INTERNET_PORT nPort;
15 AfxParseURL(m_strHttpUrl, dwServiceType, strServer, strObject, nPort);
16
17
18 try
19 {
20 pHttpConnection = pInternetSession->GetHttpConnection(strServer, nPort);
21 }
22 catch (CInternetException* e)
23 {
24 CString strError;
25 strError.Format(_T("GetHttpConnection Error: %u, Context: %u"), e->m_dwError, e->m_dwContext);
26 AfxMessageBox(strError);
27
28 if (NULL != pHttpConnection)
29 {
30 pHttpConnection->Close();
31 delete pHttpConnection;
32 pHttpConnection = NULL;
33 }
34 if (NULL != pInternetSession)
35 {
36 pInternetSession->Close();
37 delete pInternetSession;
38 pInternetSession = NULL;
39 }
40
41 return FALSE;
42 }
43
44
45 strParam.Format(_T("?ccvid=%s&filename=%s&filesize=%u&first=1&format=%s&md5=%s&servicetype=%s&uid=%s&time=%I64u"),
46 m_strVideoid, m_strVideoName, m_fileLen, g_strFormat, m_strFileMD5, m_strServicetype, m_strUserid, currentTime);
47 strParam.AppendFormat(_T("&hash=%s"), sHash.c_str());
48
49 CString strTempObject = strObject + strParam;
50 pHttpFile = pHttpConnection->OpenRequest(CHttpConnection::HTTP_VERB_GET, strTempObject);
51 if (NULL == pHttpFile)
52 {
53 AfxMessageBox(_T("OpenRequest Error."));
54
55 if (NULL != pHttpFile)
56 {
57 pHttpFile->Close();
58 delete pHttpFile;
59 pHttpFile = NULL;
60 }
61 if (NULL != pHttpConnection)
62 {
63 pHttpConnection->Close();
64 delete pHttpConnection;
65 pHttpConnection = NULL;
66 }
67 if (NULL != pInternetSession)
68 {
69 pInternetSession->Close();
70 delete pInternetSession;
71 pInternetSession = NULL;
72 }
73
74 return FALSE;
75 }
76
77
78 pHttpFile->AddRequestHeaders(_T("Content-Type: application/x-www-form-urlencoded; charset=utf-8"));
79
80
81 try
82 {
83 pHttpFile->SendRequest();
84 }
85 catch (CInternetException* e)
86 {
87 CString strError;
88 strError.Format(_T("SendRequest Error: %u, Context: %u"), e->m_dwError, e->m_dwContext);
89 AfxMessageBox(strError);
90
91 if (NULL != pHttpFile)
92 {
93 pHttpFile->Close();
94 delete pHttpFile;
95 pHttpFile = NULL;
96 }
97 if (NULL != pHttpConnection)
98 {
99 pHttpConnection->Close();
100 delete pHttpConnection;
101 pHttpConnection = NULL;
102 }
103 if (NULL != pInternetSession)
104 {
105 pInternetSession->Close();
106 delete pInternetSession;
107 pInternetSession = NULL;
108 }
109
110 return FALSE;
111 }
112
113
114 char szChars[1024 + 1] = { 0 };
115 CString strRawResponse;
116 UINT nReaded = 0;
117 while ((nReaded = pHttpFile->Read((void*)szChars, 1024)) > 0)
118 {
119 szChars[nReaded] = '\0';
120 strRawResponse += szChars;
121 memset(szChars, 0, 1024 + 1);
122 }
123
124 AfxMessageBox(strRawResponse);
125
126
127 if (NULL != pHttpFile)
128 {
129 pHttpFile->Close();
130 delete pHttpFile;
131 pHttpFile = NULL;
132 }
133 if (NULL != pHttpConnection)
134 {
135 pHttpConnection->Close();
136 delete pHttpConnection;
137 pHttpConnection = NULL;
138 }
139 if (NULL != pInternetSession)
140 {
141 pInternetSession->Close();
142 delete pInternetSession;
143 pInternetSession = NULL;
144 }
145
146 return TRUE;
