我编写了一个java程序来完成对xml的签名,因为我无法通过c++获取签名值,通过cmd运行工作正常,但使用QProcess时出现以下错误
QProcess processAssinar;
processAssinar.start("java -jar " + qApp->applicationDirPath() + "/nfsigner.jar " + pathCertificado + " " + senhaCertificado + " " + xmlFile.fileName());
processAssinar.waitForFinished(10000);
qDebug() << processAssinar.arguments();
if(processAssinar.exitCode() != 0){
QMessageBox::critical(nullptr, "NF", "Falha ao assinar a nota fiscal");
qCritical() << processAssinar.readAllStandardError();
return;
}
错误:
"java.lang.UnsupportedClassVersionError: com/ivesti/nfsigner/NFSigner : Unsupported major.minor version 52.0\r\n\tat java.lang.ClassLoader.defineClass1(Native Method)\r\n\tat java.lang.ClassLoader.defineClass(Unknown Source)\r\n\tat java.security.SecureClassLoader.defineClass(Unknown Source)\r\n\tat java.net.URLClassLoader.defineClass(Unknown Source)\r\n\tat java.net.URLClassLoader.access$100(Unknown Source)\r\n\tat java.net.URLClassLoader$1.run(Unknown Source)\r\n\tat java.net.URLClassLoader$1.run(Unknown Source)\r\n\tat java.security.AccessController.doPrivileged(Native Method)\r\n\tat java.net.URLClassLoader.findClass(Unknown Source)\r\n\tat java.lang.ClassLoader.loadClass(Unknown Source)\r\n\tat sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)\r\n\tat java.lang.ClassLoader.loadClass(Unknown Source)\r\n\tat sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)\r\nException in thread \"main\" "
最佳答案
可能是由于参数格式所致。试试这个:
QString l_jar_path = qApp->applicationDirPath() + "/nfsigner.jar " + pathCertificado + " " + senhaCertificado + " " + xmlFile.fileName();
QStringList l_args;
l_args << "-jar" << l_jar_path;
QProcess l_proc;
l_proc.start("java", l_args);
关于java - QProcess 不启动 java 应用程序,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/58694846/