[英]java button opening mysql connection not working
I am trying to execute a query through a button click but I seem to have something wrong. 我正在尝试通过单击按钮来执行查询,但似乎有问题。
btn.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent e) {
try {
String host = "jdbc:mysql://localhost:3306/fabius";
String uName = "x";
String uPass = "x";
Connection con = DriverManager.getConnection(host, uName, uPass);
Statement stmt = con.createStatement();
String SQL = "SELECT * from prices";
ResultSet rs = stmt.executeQuery(SQL);
System.out.println(rs);
}
catch (SQLException err) {
System.out.println(err.getMessage());
}
}
});
This returns the error 这将返回错误
no suitable driver found
Somehow this works as required. 以某种方式可以按要求工作。
btn.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent e) {
try{
String host = "jdbc:mysql://localhost:3306/fabius";
String uName = "root";
String uPass = "cupcup";
Connection con = DriverManager.getConnection(host, uName, uPass);
Statement stmt = con.createStatement();
String SQL = "SELECT `HGM.L` from prices";
ResultSet rs = stmt.executeQuery(SQL);
rs.next();
System.out.println(rs.getInt(1));
}
catch (SQLException err) {
System.out.println(err.getMessage());
}
}
});
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