package bookshop.run;/** * <p>Title: </p> * <p>Description: </p> * <p>Copyright: Copyright (c) 2004</p> * <p>Company: </p> * @author not attributable * @version 1.0 */import java.sql.*;import java.util.Vector;import bookshop.util.*;import bookshop.book.*;import javax.servlet.http.HttpServletRequest;public class op_book extends DataBase{  private book abooks = new book();	                       //新的圖書類        private javax.servlet.http.HttpServletRequest request; //建立頁面請求        private boolean sqlflag = true ;		       //對接收到的數(shù)據(jù)是否正確        private Vector booklist;			       //顯示圖書列表向量數(shù)組        private int page = 1;				       //顯示的頁碼        private int pageSize=10;				//每頁顯示的圖書數(shù)        private int pageCount =0;				//頁面總數(shù)        private long recordCount =0;			        //查詢的記錄總數(shù)        public String sqlStr="";        public Vector getBooklist() {                return booklist;        }        public boolean getSqlflag() {                return sqlflag;        }        public String to_String( String str) {                try                {                        return new String(str.getBytes("ISO8859-1"));                }                catch (Exception e)                {                        return str;                }        }        //將頁面表單傳來的資料分解        public boolean getRequest(javax.servlet.http.HttpServletRequest newrequest) {                boolean flag = false;                try                {                        request = newrequest;                        String ID = request.getParameter("id");                        long bookid = 0;                        try                        {                                bookid = Long.parseLong(ID);                        }                        catch (Exception e)                        {                        }                        abooks.setId(bookid);                        String bookname = request.getParameter("bookname");                        if (bookname==null || bookname.equals(""))                        {                                bookname = "";                                sqlflag = false;                        }                        abooks.setBookName(to_String(bookname));                        String author = request.getParameter("author");                        if (author==null || author.equals(""))                        {                                author = "";                                sqlflag = false;                        }                        abooks.setAuthor(to_String(author));                        String publish = request.getParameter("publish");;                        if (publish==null)                        {                                publish = "";                        }                        abooks.setPublish(to_String(publish));                        String bookclass = request.getParameter("bookclass");                        int bc = Integer.parseInt(bookclass);                        abooks.setBookClass(bc);                        String bookno = request.getParameter("bookno");                        if (bookno == null)                        {                                bookno = "";                        }                        abooks.setBookNo(to_String(bookno));                        String picture = request.getParameter("picture");                        if (picture == null)                        {                                picture = "images/01.gif";                        }                        abooks.setPicture(to_String(picture));                        float price;                        try	{                                price =new Float(request.getParameter("price")).floatValue();                        }                        catch (Exception e)                        {                                price = 0;                                sqlflag = false;                        }                        abooks.setPrince(price);                        int amount;                        try                        {                                amount = new Integer(request.getParameter("amount")).intValue();                        }                        catch (Exception e)                        {                                sqlflag = false;                                amount = 0;                        }                        abooks.setAmount(amount);                        String content = request.getParameter("content");                        if (content == null)                        {                                content = "";                        }                        abooks.setContent(to_String(content));                        if (sqlflag)                        {                                flag = true;                        }                        return flag;                }                catch (Exception e)                {                        return flag;                }        }        public String getSql() {                sqlStr = "select id,classname from book order by id";                return sqlStr;        }        public boolean book_search(HttpServletRequest res) throws Exception {          DataBase db = new DataBase();                   db.connect();                   stmt = db.conn.createStatement ();                // System.out.println("aaaaaaaa");                request = res;                String PAGE = request.getParameter("page");   //頁碼                String classid = request.getParameter("classid");	//分類ID號                String keyword = request.getParameter("keyword");	//查詢關(guān)鍵詞                if (classid==null) classid="";                if (keyword==null) keyword = "";                keyword = to_String(keyword).toUpperCase();                try                {                        page = Integer.parseInt(PAGE);                }                catch (NumberFormatException e)                {                        page = 1;                }                //取出記錄數(shù)                if (!classid.equals("") && keyword.equals("") ) {                        sqlStr = "select count(*) from book where bookclass='" + classid + "'";                } else if (!keyword.equals("")) {                        if (classid.equals(""))                        {                                sqlStr = "select count(*) from book where upper(bookname) like '%" +keyword+ "%' or upper(content) like '%" + keyword + "%'";                        } else {                                sqlStr = "select count(*) from book where bookclass='" + classid + "' and  (upper(bookname) like '%" +keyword+ "%' or upper(content) like '%" + keyword + "%')";                        }                } else {                        sqlStr = "select count(*) from book";                }                int rscount = pageSize;                try                {                        ResultSet rs1 = stmt.executeQuery(sqlStr);                        if (rs1.next()) recordCount = rs1.getInt(1);                        rs1.close();                }                catch (SQLException e)                {        System.out.println(e.getMessage());                        return false;                }                //設(shè)定有多少pageCount                System.out.println("kkkkk"+recordCount);                if (recordCount < 1)            pageCount = 0;        else            pageCount = (int)(recordCount - 1) / pageSize + 1;                //檢查查看的頁面數(shù)是否在范圍內(nèi)                if (page < 1)            page = 1;        else if (page > pageCount)            page = pageCount; //System.out.println("bbbbbbbbbbbbb");                rscount = (int) recordCount % pageSize;	 // 最后一頁記錄數(shù) //System.out.println("ccccccccccc");                //sql為倒序取值                sqlStr = "select   a.id,a.bookname,a.bookclass,b.classname,a.author,a.publish,a.bookno,a.content,a.prince,a.amount,a.Leav_number,a.regtime,a.picture from book a,bookclass b where a.Bookclass = b.Id ";                // System.out.print("ccc"+sqlStr);                if (!classid.equals("") && keyword.equals("") ){  //如果類別不為空，非查詢                        if (page == 1)                        {                                sqlStr = sqlStr + " and a.bookclass='" + classid + "' order by a.Id desc";                        } else {                                sqlStr = sqlStr + " and a.bookclass='" + classid + "limit "+(recordCount-pageSize * page)+","+(recordCount-pageSize * (page-1));                        }                } else if (!keyword.equals("")) {  //如果是查詢資料