我的“设置”:
那是我的连接文件:
package modelo;
import java.sql.Connection;
import java.sql.DriverManager;
import javafx.scene.control.Alert;
public class Conexion {
Connection con;
String url="jdbc:oracle:thin:@localhost:1521:XE";
String user="hr";
String pass="pass";
public Connection conectar(){
try {
Class.forName("Oracle.jdbc.driver.OracleDriver");
con = DriverManager.getConnection(url,user,pass);
} catch (Exception e) {
Alert alert = new Alert(Alert.AlertType.ERROR);
alert.setTitle("Ventana de error");
alert.setHeaderText(e.getMessage());
System.out.println(e.getMessage());
alert.setContentText("Acepta para continuar");
alert.showAndWait();
}
return con;
}
public void desconexion(){
try {
con.close();
} catch (Exception e) {
System.out.println("Error al desconectarse" + e.getMessage());
}
}
}
系统输出错误:Oracle.jdbc.driver.OracleDriver
我添加了“e.printStackTrace();”在“alert.setHeaderText(e.getMessage());”行下我明白了:
java.lang.ClassNotFoundException: Oracle.jdbc.driver.OracleDriver
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
Oracle.jdbc.driver.OracleDriver
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:315)
at modelo.Conexion.conectar(Conexion.java:23)
at modelo.ReparacionDao.listar(ReparacionDao.java:27)
at controlador.VClientesController.actualizarTabla(VClientesController.java:126)
at controlador.VClientesController.initialize(VClientesController.java:110)
at javafx.fxml@18/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2655)
at javafx.fxml@18/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2548)
at javafx.fxml@18/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3331)
at javafx.fxml@18/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3287)
at javafx.fxml@18/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3255)
at javafx.fxml@18/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3227)
at javafx.fxml@18/javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3203)
at javafx.fxml@18/javafx.fxml.FXMLLoader.load(FXMLLoader.java:3196)
at controlador.Principal.start(Principal.java:30)
at javafx.graphics@18/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:847)
at javafx.graphics@18/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:484)
at javafx.graphics@18/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:457)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at javafx.graphics@18/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:456)
at javafx.graphics@18/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
at javafx.graphics@18/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at javafx.graphics@18/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:184)
at java.base/java.lang.Thread.run(Thread.java:834)
我不能停止感谢你帮助我的速度,这让我很惊讶。
另一件奇怪的事情是,如果我删除 imports .sql.Connection;和 .sql.DriverManager; Netbeans 没有向我建议正确的导入。 [1]: