@Override
public String execute() throws Exception {
try {
// 获取购物车信息
ActionContext actionContext = ActionContext.getContext();
Map websession = actionContext.getSession();
Cart theCart = (Cart) websession.get("cart");
Vector<Booklist> booksincart = theCart.getBookincart();
Map<Integer, Integer> amountmap = theCart.getAmountmap();
int totalprice = theCart.getTotal_price();
User theUser = (User) websession.get("user");
int user_id = 0;
if (theUser != null) {
user_id = theUser.getId();
}
// 将购物车信息写入数据库
Session session = HibernateUtil.getSessionFactory().getCurrentSession();
session.beginTransaction();
session
.createQuery("delete from Cart where user_id = ?")
.setString(0, user_id + "")
.executeUpdate();
session.getTransaction().commit();
Cart temCart = new Cart();
temCart.setUser_id(user_id);
Set<Integer> keys = amountmap.keySet();
for (int i = 0; i < booksincart.size(); i++) {
temCart.setBook_id(booksincart.get(i).getId());
temCart.setTotal_amount(amountmap.get(temCart.getBook_id()));
Session insertsession = HibernateUtil.getSessionFactory().getCurrentSession();
insertsession.beginTransaction();
insertsession.save(temCart);
insertsession.getTransaction().commit();
}
// 删除用户session
websession.clear();
return SUCCESS;
} catch (Exception e) {
e.printStackTrace();
return ERROR;
}
}
@Override
public String execute() throws Exception {
try {
String book_id = this.id;
Session session = HibernateUtil.getSessionFactory().getCurrentSession();
session.beginTransaction();
session
.createQuery("delete from Booklist where id = ?")
.setString(0, book_id)
.executeUpdate();
session.getTransaction().commit();
return SUCCESS;
} catch (Exception e) {
e.printStackTrace();
return ERROR;
}
}
@Override
public String execute() throws Exception {
try {
String bookname = this.bookname;
String operator = this.operator;
ActionContext actionContext = ActionContext.getContext();
Map websession = actionContext.getSession();
Cart theCart = (Cart) websession.get("cart");
Vector<Booklist> currentbooks = theCart.getBookincart();
Map<Integer, Integer> amountmap = theCart.getAmountmap();
int totalprice = theCart.getTotal_price();
// 减少商品
if (operator.equals("-")) {
for (int i = 0; i < currentbooks.size(); i++) {
if (currentbooks.get(i).getBookname().equals(bookname)) {
int id = currentbooks.get(i).getId();
int temamount = amountmap.get(id);
int oneprice = currentbooks.get(i).getPrice();
totalprice -= oneprice;
if (temamount != 1) amountmap.put(id, temamount - 1);
else {
amountmap.remove(id);
currentbooks.remove(i);
}
break;
}
}
// 存session
theCart.setAmountmap(amountmap);
theCart.setBookincart(currentbooks);
theCart.setTotal_price(totalprice);
websession.put("cart", theCart);
}
// 增加商品
if (operator.equals("1")) {
// 搜索是否已经是cart里面的商品
Boolean already = false;
for (int i = 0; i < currentbooks.size(); i++) {
if (currentbooks.get(i).getBookname().equals(bookname)) {
int id = currentbooks.get(i).getId();
int temamount = amountmap.get(id);
int oneprice = currentbooks.get(i).getPrice();
totalprice += oneprice;
amountmap.put(id, temamount + 1);
already = true;
break;
}
}
if (already == false) {
Session session = HibernateUtil.getSessionFactory().getCurrentSession();
session.beginTransaction();
List allbooks = session.createQuery("from Booklist").list();
session.getTransaction().commit();
for (int j = 0; j < allbooks.size(); j++) {
Booklist theBook = (Booklist) allbooks.get(j);
if (theBook.getBookname().equals(bookname)) {
int id = theBook.getId();
int oneprice = theBook.getPrice();
totalprice += oneprice;
currentbooks.add(theBook);
amountmap.put(id, 1);
break;
}
}
}
// 存session
theCart.setAmountmap(amountmap);
theCart.setBookincart(currentbooks);
theCart.setTotal_price(totalprice);
websession.put("cart", theCart);
}
return SUCCESS;
} catch (Exception e) {
e.printStackTrace();
return ERROR;
}
}