捕获这段异常
try{
conn=sel.getConn();
stmt=conn.createStatement();
rs=stmt.executeQuery("select * from Ango");
while(rs.next()){
out.println(rs.getInt(1));
out.println(rs.getString(2));
out.println(rs.getString(3));
out.println(rs.getString(4));
out.println(rs.getString(5));
out.println(rs.getString(6));
out.println(rs.getFloat(7));
out.println(rs.getString(8));
out.println(rs.getInt(9));
out.println(rs.getInt(10));
}catch(Exception ex){
//do something...
}