分类： 嵌入式
2013-07-24 17:06:07
最近要用到QT里面的qhttp或者QNetworkAccessManager post一个文件到后台。post一个简单的form还是比较容易，from如果是multipart/form-data类型的话，那就比较复杂，网上收集了一些资料，记录了下来。
首先一个页面代码如下：
|
1
2
3
4
5
6
7
8
9
10
11
12
13
|
上传文件
文件名称（name）：
文件是否可见（visibility）：
*文件内容：
|
QT的post代码如下：
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
bool uploadFile(std::string localPath)
{
if(m_strFname == "")
return false;
QFile file(QString(localPath.c_str()));
if (!file.open(QIODevice::ReadOnly))
{
file.close();
return false;
}
QUrl url = QString(“your host”);
url.setPort(1234);
url.setPath(“your http path”);
QString crlf="\r\n";
qsrand(QDateTime::currentDateTime().toTime_t());
QString b=QVariant(qrand()).toString()+QVariant(qrand()).toString()+QVariant(qrand()).toString();
QString boundary="---------------------------"+b;
QString endBoundary=crlf+"--"+boundary+"--"+crlf;
QString contentType="multipart/form-data; boundary="+boundary;
boundary="--"+boundary+crlf;
QByteArray bond=boundary.toAscii();
QByteArray send;
send.append(bond);
boundary = crlf + boundary;
bond = boundary.toAscii();
send.append(QString("Content-Disposition: form-data; name=\"name\""+crlf).toAscii());
send.append(QString("Content-Transfer-Encoding: 8bit"+crlf).toAscii());
send.append(crlf.toAscii());
send.append(QString("文件名称").toUtf8());
send.append(bond);
send.append(QString("Content-Disposition: form-data; name=\"visibility\""+crlf).toAscii());
send.append(QString("Content-Transfer-Encoding: 8bit"+crlf).toAscii());
send.append(crlf.toAscii());
send.append(QString("0").toUtf8());
send.append(bond);
send.append(QString("Content-Disposition: form-data; name=\"file\"; filename=\""+QString(localPath.c_str())+"\""+crlf).toAscii());
//send.append(QString("Content-Type: "+fileMimes.at(i)+crlf+crlf).toAscii());
send.append(QString("Content-Transfer-Encoding: 8bit"+crlf).toAscii());
send.append(crlf.toAscii());
send.append(file.readAll());
send.append(endBoundary.toAscii());
file.close();
QNetworkRequest req(url);
req.setHeader(QNetworkRequest::ContentTypeHeader, contentType.toAscii());
req.setHeader(QNetworkRequest::ContentLengthHeader, QVariant(send.size()).toString());
QNetworkAccessManager qam;
qam.post(req,send);
return true;
}
|
可能有问题，先到这里吧。
