Qt使用QHttpMultiPart发送文件和检查本地程序版本号

发送一个文件到指定的服务器地址

QNetworkAccessManager *manager = new QNetworkAccessManager(this);
QUrl url("http://172.16.21.47:8889/financeContract/financeContractRecordDataImport"); // 替换为你的上传URL	
QNetworkRequest request(url);
QHttpMultiPart *multiPart = new QHttpMultiPart(QHttpMultiPart::FormDataType);

// 添加其他表单字段（如果需要）  
// QHttpPart part;  
// part.setHeader(QNetworkRequest::ContentDispositionHeader, QVariant("form-data; name=\"fieldName\""));  
// part.setBody("fieldValue");  
// multiPart->append(part); 

// 添加文件  
QHttpPart filePart;
//上传固定的名称
//filePart.setHeader(QNetworkRequest::ContentDispositionHeader, QVariant("form-data; name=\"file\"; filename=\"myfile.txt\""));
//使用上传源文件名称
QFileInfo fileInfo(fileName);
QString docName = fileInfo.fileName();
filePart.setHeader(QNetworkRequest::ContentDispositionHeader, QVariant("form-data; name=\"file\"; filename=\"" + docName + "\""));	

QFile *file = new QFile(fileName); // 替换为你的文件路径  
if (file->open(QIODevice::ReadOnly)) {
	filePart.setBodyDevice(file);
	//file->close();
}
multiPart->append(filePart);

QNetworkReply *reply = manager->post(request, multiPart);

multiPart->setParent(reply); // 设置parent以确保在回复完成后删除multiPart  

// 处理响应...  
connect(reply, &QNetworkReply::finished, this, [reply]() {
	if (reply->error() == QNetworkReply::NoError) {
		// 处理成功响应  
		QString response = reply->readAll();
		// ...  
	}
	else {
		// 处理错误  
		// ...  
	}
	reply->deleteLater();
});

检查本地程序版本号

m_http = new QNetworkAccessManager();
//设置头信息
QNetworkRequest m_url;
m_url.setUrl(QUrl("https://pmp.eloam.net/api/ota/findFadVersion"));
m_url.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");//区别于上传文件

QSslConfiguration m_sslConfig = QSslConfiguration::defaultConfiguration();
m_sslConfig.setPeerVerifyMode(QSslSocket::VerifyNone);
m_sslConfig.setProtocol(QSsl::TlsV1_2);
m_url.setSslConfiguration(m_sslConfig);

QJsonObject object;
object.insert("as", "758686D6");
object.insert("ks", "9f0c219ca61e41b7b3e2b1f325640c9a");
object.insert("productCode", "HSPS");
object.insert("version", "V7.1.3");
QByteArray byte_array = QJsonDocument(object).toJson();
m_res = m_http->post(m_url, byte_array);//发起post请求

connect(m_res, &QNetworkReply::finished, this, &Update::requestFinished);