以VS开发为例。因为https访问需要用到SSL认证,而QT默认是不支持SSL认证,所以在使用之前必须先做一些准备工作:
需要安装OpenSSL库:
1、首先打开http://slproweb.com/products/Win32OpenSSL.html网页;
2、下载安装包,我下载的是:Win32 OpenSSL v1.0.1c Light安装包,随着时间的推进,这个版本会不断更新的;
3、安装(exe文件)到本地,并且在安装过程中选择将库安装到OpenSSL的安装目录(/bin)下面。
4、将libeay32.dll 和 ssleay32.dll 文件拷贝到Qt中的存放有QtNetwork4.dll和QtNetworkd4.dll的文件目录下。我的是D:\Qt\4.8.2\bin
现在可以编写代码:
QNetworkRequest request;
QSslConfiguration config; QSslConfiguration conf = request.sslConfiguration();
5 conf.setPeerVerifyMode(QSslSocket::VerifyNone);
6 conf.setProtocol(QSsl::TlsV1SslV3);
7 request.setSslConfiguration(conf);
上面三句添回检验证书模式与协议,并设置给对应QNetworkRequest,非常重要,在这里花费了我半天的时间才找到问题
request.setUrl(QUrl("https://www.xxx.com/html.jsp"));
request.setHeader(QNetworkRequest::ContentTypeHeader, QVariant("application/json"));
request.setHeader(QNetworkRequest::ContentLengthHeader, bytePost.length());
QNetworkReply *pReply = pManager->post(request, bytePost);
备注:
SSL证书认证,有以下三种:
1.
QSslConfiguration config ; config.setPeerVerifyMode(QSslSocket::VerifyNone);
config.setProtocol(QSsl::TlsV1); QNetworkRequest request(req);
request.setSslConfiguration(config);
2.
QNetworkRequest request ; request.setAttribute(QNetworkRequest::HttpPipeliningAllowedAttribute, true);
QNetworkReply* reply = QNetworkAccessManager::createRequest(op, request, outgoingData);
reply->ignoreSslErrors();
3.
QSslConfiguration config ; QList<QSslCertificate> certs = QSslCertificate::fromPath("C:\\FiddlerRoot.crt");
config.setCaCertificates(certs); QNetworkRequest request(req);
request.setSslConfiguration(config);