Qt5与https

Qt版本为：Qt 5.4.0 MinGW 32bit && Windos7

在使用QtNetwork模块连接https网站时出现了

QSslSocket: cannot call unresolved function SSLv23_client_method

QSslSocket: cannot call unresolved function SSL_CTX_new

QSslSocket: cannot call unresolved function SSL_library_init

QSslSocket: cannot call unresolved function ERR_get_error

QSslSocket: cannot call unresolved function ERR_get_error

发现是OpenSSL的问题，去下载对应位数的OpenSSL （默认安装，一路next到底就行了，Qt一般是32位的，OpenSSL一般也是安装32位的）。

在代码方面的话，类似于下面，设置QSslConfiguration

[cpp] view plain copy

1. QNetworkRequest mRequest;  
2. QSslConfiguration config;  
3. config.setPeerVerifyMode(QSslSocket::VerifyNone);  
4. config.setProtocol(QSsl::SslV2);  
5. mRequest.setSslConfiguration(config);  

1. 在qt中将http更改为https只需将

      request.setUrl(QNetworkRequest(QUrl(url)));   

更改如下：

        QNetworkRequest request;

        QSslConfiguration config;

        config.setPeerVerifyMode(QSslSocket::VerifyNone);

        config.setProtocol(QSsl::TlsV1SslV3);

        request.setSslConfiguration(config);

        request.setUrl(QUrl(url));

2.程序执行出现打印如下信息：   

   qt.network.ssl: QSslSocket: cannot call unresolved function ERR_get_error

     qt.network.ssl: QSslSocket: cannot call unresolved function TLSv1_client_method

   qt.network.ssl: QSslSocket: cannot call unresolved function SSL_CTX_new

   qt.network.ssl: QSslSocket: cannot call unresolved function SSL_library_init

   qt.network.ssl: QSslSocket: cannot call unresolved function ERR_get_error

3.拷贝D:\mingwQt\Qt5.5.0\Tools\mingw492_32\opt\bin目录下的libeay32.dll和ssleay32.dll到目录D:\mingwQt\Qt5.5.0\5.5\mingw492_32\bin下。