图书馆接口设计

/**
     * 拼装id去重
     * @param bookIds
     * @param s
     * @return
     */
    private String handleBookIds(String bookIds, String s) {
        if(bookIds == null || "".equals(bookIds)){
            bookIds = s;
        }else{
            String[] needAdds = s.split(",");
            String[] bs = bookIds.split(",");
            for(int i = 0; i < needAdds.length; i++){
                boolean flag = true;
                for(int j = 0; j < bs.length; j++){
                    if(needAdds[i].equals(bs[j])){
                        flag = false;
                        break;
                    }
                }
                if(flag){
                    bookIds += needAdds[i]+",";
                }
            }
        }
        return bookIds;
    }
    
    /**
     * 获取借书卡id
     * @return
     */
    private String getCardId() {
        Card card = new Card();
        String user_ID = this.user.getUserId();
        card.setUserId(user_ID);
        Card card2 = cardService.selectBySelective(card);
        if(card2 == null){
            return null;
        }
        else{
            return card2.getId();
        }
    }
    
    /**
     * 拼装Book为book对象
     * @param bookMap
     * @return
     */
    private Book getBookObject(Map<String, Object> bookMap) {
        String title = (String)bookMap.get("title");
        String author = (String)bookMap.get("author");
        String number = (String)bookMap.get("number");
        String hold = (String)bookMap.get("hold");
        Book book = new Book();
        book.setAuther(author);
        book.setTitle(title);
        book.setNumber(number);
        book.setHold(hold);
        Book book2 = bookService.selectBySelective(book);
        return book2;
    }
    
    /**
     * 处理图书馆是否有这本书
     * @param bookMap
     */
    private void handleIsHaveBook(Map<String, Object> bookMap) {
        String title = (String)bookMap.get("title");
        String author = (String)bookMap.get("author");
        String number = (String)bookMap.get("number");
        String hold = (String)bookMap.get("hold");
        Book book = new Book();
        book.setAuther(author);
        book.setTitle(title);
        book.setNumber(number);
        book.setHold(hold);
        Book book2 = bookService.selectBySelective(book);
        if(book2 != null){//有书
            book2.setHold(hold);
            bookService.updateByPrimaryKey(book2);
        }else{//没
            bookService.insert(book);
        }
        
    }
    
    
    /**
     * 通过借书卡号获取预定信息
     * @param cardId
     * @return
     */
    private Reserve getReservebyCardId(String cardId) {
        Reserve reserve = new Reserve();
        reserve.setCardId(cardId);
        Reserve reserve2 = reserveService.selectBySelective(reserve);
        return reserve2;
    }
    
    /**
     * 通过id封装Book
     * @param bookIds
     * @return
     */
    private List<Map<String, Object>> putBookByIds(String bookIds) {
        List<Map<String,Object>> list = new ArrayList<Map<String, Object>>();
        if(bookIds != null){
            String[] ids = bookIds.split(",");
            for(String id : ids){
                Book book = bookService.selectByPrimaryKey(Long.valueOf(id));
                Map<String,Object> BOOK = new HashMap<String, Object>();
                BOOK.put("title", book.getTitle());
                BOOK.put("author", book.getAuther());
                BOOK.put("number", book.getNumber());
                BOOK.put("hold", book.getHold());
                list.add(BOOK);
            }
        }
        return list;
    }
    
    /**
     * 添加标识位，判断是否全部准备
     * @param order
     * @param bookId
     * @return 未准备书数量
     */
    private int addFlagToBookIdsAndJudgeIsFinish(Order order, Long bookId) {
        String bookIds = order.getBookIds();
        String[] split = bookIds.split(",");
        String newBookIds = "";
        int num = 0;
        boolean isFinish = true;
        if(split != null){
            boolean flag = false;
            for(String e : split){
                if(e.length() <= 1 || e.charAt(0) != ‘0‘){
                    num++;
                    isFinish = false;
                }
                String bookid = e;
                if(!flag&&(e.length() <= 1 || e.charAt(0) != ‘0‘)){
                    Long bid = Long.valueOf(e);
                    if(bid == bookId){
                        bookid = "0"+bookid;
                        flag = true;
                    }
                }
                newBookIds += bookid+",";
            }
            order.setBookIds(newBookIds);
        }
        if(isFinish){
            order.setType("1");
        }
        orderService.updateByPrimaryKeyWithBLOBs(order);
        return num;
    }