Question

我使用开放式办公室数据库3.3作为我的数据库。我能够成功建立连接，但在尝试执行查询时出错：

 public class openofficeupdate {
String databaseurl="C:\\Users\\RAVITEJA\\Documents\\BluetoothExchangeFolder\\salesforce.odb";
openofficeupdate() throws ClassNotFoundException, SQLException{
    System.out.println("Entered into constructor");
    Connection connection=null;
    Statement statement=null;
   try{
    Class c=openofficeclass();
    System.out.println("Class name set");

    Connection cntn=createConnection(databaseurl);
    connection=cntn;
    System.out.println("connection created");

    Statement stmt=createStatement(cntn);
    statement=stmt;
    System.out.println("Statement created");

    executeQueries(stmt);
    System.out.println("Query executed");

    closeStatement(stmt);
    System.out.println("Statement closed");

    closeConnection(cntn);
    System.out.println("Connection closed");

    }catch(Exception e){
        System.out.println(e);

        closeStatement(statement);
        System.out.println("Statement closed");

        closeConnection(connection);
        System.out.println("Connection closed");
    }
}
public static void main(String args[]) throws ClassNotFoundException, SQLException{
    new openofficeupdate();
}

private Class openofficeclass() throws ClassNotFoundException {
    return Class.forName("org.hsqldb.jdbcDriver");
}

private Connection createConnection(String databaseurl) throws SQLException{
    return DriverManager.getConnection("jdbc:hsqldb:file:" +databaseurl);
}

private Statement createStatement(Connection cntn) throws SQLException{
    return cntn.createStatement();
}

private void closeStatement(Statement stmt) throws SQLException{
    stmt.close();
}

private void closeConnection(Connection cntn) throws SQLException{
    cntn.close();
}

private void executeQueries(Statement stmt) throws SQLException{

    System.out.println("Going to execute query");
    //int status=stmt.executeUpdate("insert into Mobiles(Mobile ID,Employee ID,Start_Track_Time,Stop_Track_Time) values(987654321,198,09:30:00,10:30:00)");
    ResultSet rs=stmt.executeQuery("select * from Mobiles;");
    while(rs.next()){
        System.out.println("Inside row "+rs.getRowId(1));
    }
    System.out.println("Query executed with status ");
}
}

我将 hsqldb.jar 设置为我的类路径。上面显示的代码的输出是......

Entered into constructor
Class name set
connection created
Statement created
Going to execute query
java.sql.SQLSyntaxErrorException: user lacks privilege or object not found: MOBILES
Statement closed
Connection closed

这有什么问题？

Answer 1

当您连接到数据库时，您正在以无权访问数据库中某个实体的用户身份进行操作。您需要为具有相应权限的用户设置连接的用户。根据这个你想要的用户名是SA

数据库开发人员可能会惊讶地发现OpenOffice.org Base已经拥有一个用户帐户。此用户帐户（名为SA）...

使用Connection对象上的setClientInfo()方法将用户名设置为“SA”。

在开放式办公室数据库中查询

1 个答案: