在尝试从结果集的元数据中获取库存计数时,我似乎遇到了问题。错误是线程中的异常" AWT-EventQueue-0" java.lang.IllegalStateException:SQLite JDBC:内部状态不一致。
这个想法是使用这个表模型用数据库查询的结果填充JTable。但是,当我这样做时,我得到上述错误。
相关代码是:
public DefaultTableModel buildFlightModel()
throws SQLException {
query="SELECT Airline.AirlineName, Flight.FlightID, Flight.Location, Flight.Destination, Flight.ArriveTime, Flight.LeaveTime FROM Flight INNER JOIN Airline ON Airline.AirlineID=Flight.AirlineID;";
try {
Class.forName("org.sqlite.JDBC");
c = DriverManager.getConnection("jdbc:sqlite:coursework.db");
stmt = c.createStatement();
rs=stmt.executeQuery(query);
while(rs.next()){
//System.out.println(s);
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
ResultSetMetaData metaData = rs.getMetaData();
// names of columns
Vector<String> columnNames = new Vector<String>();
int columnCount = metaData.getColumnCount();
for (int column = 1; column <= columnCount; column++) {
columnNames.add(metaData.getColumnName(column));
}
// data of the table
Vector<Vector<Object>> data = new Vector<Vector<Object>>();
while (rs.next()) {
Vector<Object> vector = new Vector<Object>();
for (int columnIndex = 1; columnIndex <= columnCount; columnIndex++) {
vector.add(rs.getObject(columnIndex));
}
data.add(vector);
}
return new DefaultTableModel(data, columnNames);
}
任何想法/想法/帮助都将深表感谢。谢谢。
答案 0 :(得分:1)
ResultSet.isclose() == true
时抛出此异常。尝试在开始读取循环之前创建Clone
MetaData
。