public List getBooksByCost(String cost) {
List al = new ArrayList();
try {
con = JdbcUtil.getMysqlConnection();
ps = con.prepareStatement("select *from jlcbooks where cost=?");
ps.setString(1, cost);
rs = ps.executeQuery();
while (rs.next()) {
Book bo = new Book();
bo.setBid(rs.getString(1));
bo.setBname(rs.getString(2));
bo.setAuthor(rs.getString(3));
bo.setPub(rs.getString(4));
bo.setCost(rs.getString(5));
bo.setEdi(rs.getString(6));
bo.setIsbn(rs.getString(7));
al.add(bo);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
JdbcUtil.cleanup(ps, con);
}
return al;
}
public Book getBookByBid(String bid) {
Book bo = null;
try {
con = JdbcUtil.getMysqlConnection();
ps = con.prepareStatement("select *from jlcbooks where bid=?");
ps.setString(1, bid);
rs = ps.executeQuery();
if (rs.next()) {
bo = new Book();
bo.setBid(rs.getString(1));
bo.setBname(rs.getString(2));
bo.setAuthor(rs.getString(3));
bo.setPub(rs.getString(4));
bo.setCost(rs.getString(5));
bo.setEdi(rs.getString(6));
bo.setIsbn(rs.getString(7));
}
} catch (Exception e) {
e.printStackTrace();
} finally {
JdbcUtil.cleanup(ps, con);
}
return bo;
}