問題描述
我得到了一個(gè)示例項(xiàng)目，它使用 QSslSocket 和 QSslCertificate 從 SSL 證書(Qt 5.7、Windows 10)獲取信息.QSslSocket::supportsSsl() 函數(shù)返回 false，我在運(yùn)行時(shí)收到這些錯(cuò)誤:
I got a sample projct that uses QSslSocket and QSslCertificate to get information from a SSL certificate (Qt 5.7, Windows 10). QSslSocket::supportsSsl() function returns false and I get these errors at runtime:
qt.network.ssl: QSslSocket: cannot call unresolved function SSLv23_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
所以我編譯了 OpenSSL_1.1.0 并將其鏈接到我的項(xiàng)目:
So I compiled OpenSSL_1.1.0 and linked it to my project:
INCLUDEPATH += . "C:/OpenSSL-Win32/include/" LIBS +=
-L"C:/OpenSSL-Win32/lib/" -llibcrypto -llibssl
但還是一樣的錯(cuò)誤.我下載了 OpenSSL 安裝程序，但還是一樣.
But still same errors. I downloaded OpenSSL installer and still the same.
奇怪的是 QSslSocket::sslLibraryBuildVersionString() 返回 OpenSSL 1.0.2g 1 Mar 2016，即使我編譯并安裝了 OpenSSL_1.1.0.
Weird is QSslSocket::sslLibraryBuildVersionString() returns OpenSSL 1.0.2g 1 Mar 2016, even though I compiled and installed OpenSSL_1.1.0.
我知道我遺漏了一個(gè)簡單的細(xì)節(jié).請(qǐng)告訴我是什么.謝謝.
I know I'm missing a simple detail. Please tell me what is it. Thanks.
推薦答案
來自文檔:
QSslSocket::sslLibraryBuildVersionString() 返回 SSL 庫的版本字符串在編譯時(shí)使用.(強(qiáng)調(diào)我的)
QSslSocket::sslLibraryBuildVersionString() Returns the version string of the SSL library in use at compile time. (emphasis mine)
你從它得到結(jié)果并不意味著 Qt 可以訪問 OpenSSL，只是它是針對(duì)某個(gè)版本編譯的.這讓您知道如果動(dòng)態(tài)鏈接(默認(rèn)情況下)，您應(yīng)該在運(yùn)行時(shí)提供哪個(gè)二進(jìn)制兼容版本.
That you get a result from it doesn't mean that Qt has access to OpenSSL, only that it was compiled against a certain version. That lets you know what binary-compatible version you should provide at runtime if it's dynamically linked (as it is by default).
您想檢查 QSslSocket::sslLibraryVersionNumber() - [...] 庫的版本在運(yùn)行時(shí)使用(重點(diǎn)是我的).
You want to check QSslSocket::sslLibraryVersionNumber() - [...] the version of the library in use at run-time (emphasis mine).
Qt 可能會(huì)嘗試在 PATH 中找到 OpenSSL dll 的副本，如果沒有，則在 QCoreApplication::libraryPaths 給出的路徑中.在嘗試使用 OpenSSL 之前，您應(yīng)該將 OpenSSL dll 的位置添加到其中之一.
Qt will presumably attempt to find a copy of OpenSSL dlls in PATH, and if not, in the paths given by QCoreApplication::libraryPaths. You should add the location of OpenSSL dlls to either one before attempting to use OpenSSL.
這篇關(guān)于在 Qt C++ 中使用 OpenSSL的文章就介紹到這了，希望我們推薦的答案對(duì)大家有所幫助，也希望大家多多支持html5模板網(wǎng)！