用JTable读不出数据库中的数据

Question

while(rs.next())
{ for(j=0;j<rsmd.getColumnCount();j++){
              table.setValueAt(rs.getObject(j),i,j);
             
            }
            i=i+1;
}
感觉上已经没问题了，但是就是读不出，也没有提示任何错误，请问一下，这究竟是怎么回事

Answer 1

try {
                    ResultSet rs = TestSQLConnection.SQLSelect("Select * from sysobjects");
                    rs.last();
                    int r = rs.getRow();
                    int c = rs.getMetaData().getColumnCount();
                    head= new String[c];obj = new String[r][c];
                    for (int i = 0; i < rs.getMetaData().getColumnCount(); i++) {
                        head[i] = rs.getMetaData().getColumnName(i + 1);
                    }
                    rs.first();                    int rr=0;
                    while(rs.next()) {
                        for (int cc = 0; cc <c; cc++) {
                            obj[rr][cc] = rs.getString(cc+1);
                        }
                        rr++;
                    }                } catch (Exception ex) {
                    ex.printStackTrace();
                }
                jTable1 = new JTable(obj, head);
                    jTable1.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
                    jScrollPane1.getViewport().add(jTable1);
            }

Answer 2

你先用System.out.println(rs.getString(1));
看看你RS有没有取到值