// 上传文件或者数据的实现
void HttpClientPrivate::upload(HttpClientPrivate *d,
const QStringList &paths, const QByteArray &data,
std::function<void (const QString &)> successHandler,
std::function<void (const QString &)> errorHandler,
const char *encoding) {
bool debug = d->debug;
QHttpMultiPart *multiPart = new QHttpMultiPart(QHttpMultiPart::FormDataType);
// 创建 Form 表单的参数 Text Part
QList<QPair<QString, QString> > paramItems = d->params.queryItems();
for (int i = 0; i < paramItems.size(); ++i) {
QHttpPart textPart;
QString name = paramItems.at(i).first;
QString value = paramItems.at(i).second;
textPart.setHeader(QNetworkRequest::ContentDispositionHeader, QString("form-data; name=\"%1\"").arg(name));
textPart.setBody(value.toUtf8());
multiPart->append(textPart);
}
if (paths.size() > 0) {
// 上传文件
QString inputName = paths.size() == 1 ? "file" : "files"; // 一个文件时为 file，多个文件时为 files
for (const QString &path : paths) {
if (!path.isEmpty()) {
// path 不为空时，上传文件
QFile *file = new QFile(path);
file->setParent(multiPart); // we cannot delete the file now, so delete it with the multiPart
// 如果文件打开失败，则释放资源返回
if(!file->open(QIODevice::ReadOnly)) {
QString errorMessage = QString("打开文件失败[%2]: %1").arg(path).arg(file->errorString());
if (debug) {
qDebug().noquote() << errorMessage;
}
if (nullptr != errorHandler) {
errorHandler(errorMessage);
}
multiPart->deleteLater();
return;
}
// 文件上传的参数名为 file，值为文件名
// 服务器是 Java 的则用 form-data
// 服务器是 PHP 的则用 multipart/form-data
QString disposition = QString("form-data; name=\"%1\"; filename=\"%2\"").arg(inputName).arg(file->fileName());
QHttpPart filePart;
filePart.setHeader(QNetworkRequest::ContentDispositionHeader, QVariant(disposition));
filePart.setBodyDevice(file);
multiPart->append(filePart);
}
}
} else {
// 上传数据
QString disposition = QString("form-data; name=\"file\"; filename=\"no-name\"");
QHttpPart dataPart;
dataPart.setHeader(QNetworkRequest::ContentDispositionHeader, QVariant(disposition));
dataPart.setBody(data);
multiPart->append(dataPart);
}
bool internal;
QNetworkAccessManager *manager = HttpClientPrivate::getManager(d, &internal);
QNetworkRequest request = HttpClientPrivate::createRequest(d, HttpClientPrivate::UPLOAD);
QNetworkReply *reply = manager->post(request, multiPart);
QObject::connect(reply, &QNetworkReply::finished, [=] {
multiPart->deleteLater(); // 释放资源: multiPart + file
QString successMessage = HttpClientPrivate::readReply(reply, encoding); // 请求结束时一次性读取所有响应数据
QString errorMessage = reply->errorString();
HttpClientPrivate::handleFinish(debug, successMessage, errorMessage, successHandler, errorHandler,
reply, internal ? manager : nullptr);
});
}
