图书借阅管理系统，统计书籍借阅情况，可查询历史借阅排行和分类排行，默认返回前30名。查询时用sql
jsp，这里用到了easyui-datebox，用formatter和parser对日期格式进行转换，转换成YYYY-MM-DD 的格式，后台直接是String接受
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ page import="com.yang.bishe.entity.User"%>
<%@ page import="com.yang.bishe.entity.Book"%>
<!DOCTYPE html>
<html>
<head>
<%@ include file="/common/base.jsp"%>
<script type="text/javascript">
//分类排行
function doSearch(){
if($('#bookTypeId').combobox('getValue')==''){
$.messager.alert({
title: 'Error',
msg: '请先选择书类型'
});
}else{
$('#dg').datagrid({
url: 'borrowInfo/statistics',
queryParams:{bookTypeId: $('#bookTypeId').combobox('getValue'),startDate:$('#start').datebox('getValue'),endDate:$('#end').datebox('getValue')}
});
}
}
//总排行
function doSearchOverall(){
$('#dg').datagrid({
url: 'borrowInfo/statistics',
queryParams:{overall:'overall',startDate:$('#start').datebox('getValue'),endDate:$('#end').datebox('getValue')}
});
}
//日期区间设置格式
function mydateformatter(date){
var y = date.getFullYear();
var m = date.getMonth()+1;
var d = date.getDate();
return y+'-'+(m<10?('0'+m):m)+'-'+(d<10?('0'+d):d);
}
function mydateparser(s){
if (!s) return new Date();
var ss = (s.split('-'));
var y = parseInt(ss[0],10);
var m = parseInt(ss[1],10);
var d = parseInt(ss[2],10);
if (!isNaN(y) && !isNaN(m) && !isNaN(d)){
return new Date(y,m-1,d);
} else {
return new Date();
}
}
</script>
</head>
<body class="easyui-layout" data-options="fit:true,border:false">
<table id="dg" title="借阅排行" class="easyui-datagrid" style="width:100%;height:100%;"
toolbar="#toolbar" pagination="false"
rownumbers="true" fitColumns="true" singleSelect="true">
<thead>
<tr>
<th field="borrowNum" width="60">借阅次数</th>
<th field="bookName" width="60">书名</th>
<th field="author" width="55">作者</th>
<th field="iSBN" width="45">ISNB</th>
<th field="publisher" width="60">出版社</th>
<th field="publishYear" width="60">出版年</th>
<th field="CallNumber" width="50">索书号</th>
</tr>
</thead>
</table>
<div id="toolbar" style="height:70px;">
<div>
<table>
<tr>
<td> 类别排行:</td>
<td> 书类别:</td>
<td><select id="bookTypeId" class="easyui-combobox" data-options="required:true,editable:false,valueField:'bookTypeId',textField:'bookTypeName',url:'bookType/getBookType',panelHeight:'auto'" style="width:180px;"></select></td>
<td><a href="javascript:void(0);" class="easyui-linkbutton" iconCls="icon-search" onclick="doSearch()">Search</a></td>
</tr>
<tr>
<td> 总排行：</td>
<td> <a href="javascript:void(0);" class="easyui-linkbutton" iconCls="icon-search" onclick="doSearchOverall()">查询</a></td>
<td> 查询日期区间(可选)</td>
<td><input id="start" class="easyui-datebox" data-options="formatter:mydateformatter,parser:mydateparser,editable:false"></input>——</td>
<td><input id="end" class="easyui-datebox" data-options="formatter:mydateformatter,parser:mydateparser,editable:false"></input></td>
<td><a href="javascript:void(0);" class="easyui-linkbutton" data-options="iconCls:'ext-icon-zoom_out',plain:true" onclick="$('#start').datebox('setValue','');$('#end').datebox('setValue','');$('#dg').datagrid('load',{});">重置过滤</a></td>
</tr>
</table>
</div>
</div>
</body>
</html>
controller;
/**
* 统计,分类统计和总排行
* @param request
* @param response
* @throws Exception
*/
@RequestMapping("/statistics")
public void statistics(HttpServletRequest request,
HttpServletResponse response) throws Exception {
String bookTypeId=request.getParameter("bookTypeId");
String overall=request.getParameter("overall");
String startDate=request.getParameter("startDate");//service再判断是否有没有选择了日期区间吧
String endDate=request.getParameter("endDate");
List<Book>books=null;
if(overall!=null){
books=borrowInfoService.getOverall(startDate,endDate);
}
if(bookTypeId!=null){
books=borrowInfoService.getBookTypeOverall(bookTypeId,startDate,endDate);
}
writeJson(books,response);
}
serviceImpl(接口就省略了):
这里要注意判断是否选择了日期区间，我日期区间的判断还不完善，应该要判断endDate>startDate的，这判断可以放在前台判断。
还要注意sql语句中日期区间
+" where BorrowDate" +" between '"+startDate+"' and '"+endDate +"' group by temp.BookId "
这里面日期是要用单引号
数据库是mysql，子查询重命名时，不能重命名属性，如下面的
as temp
不能弄成as temp（，，）这种重命名的方式，要获取temp的属性，只能是temp.BorrowInfoId （BorrowInfoId是子查询select返回的字段名）这样，即temp的字段是要和select返回的字段名字一样。
@Override
public List<Book> getOverall(String startDate,String endDate) {
List<Book> books=new ArrayList();
String sql=null;
//注意这的的判断条件，是空字符串而不是null
if(startDate!=""&&endDate!=""){
sql="select temp.BookId as BookId,count(BookId) as borrowNum"
+" from (select b.BorrowInfoId,b.BooksBarCode,sn.BookId,b.BorrowDate from t_borrowinfo as b "
+" left join t_booksn as sn on b.BooksBarCode=sn.BooksBarCode) "
+" as temp "
+" where BorrowDate"
+" between '"+startDate+"' and '"+endDate
+"' group by temp.BookId "
+" order by borrowNum desc "
+" limit 30";
}else{
sql="select temp.BookId as BookId,count(BookId) as borrowNum"
+" from (select b.BorrowInfoId, b.BooksBarCode, sn.BookId from t_borrowinfo as b "
+" left join t_booksn as sn on b.BooksBarCode=sn.BooksBarCode) "
+" as temp "
+" group by temp.BookId "
+" order by borrowNum desc "
+" limit 30";
}
List<Map> map=borrowInfoDao.findBySql(sql);
for(int i=0;i<map.size();i++){
Book book=new Book();
book=bookDao.getById(Book.class,(Integer)map.get(i).get("BookId"));
book.setBorrowNum(Integer.parseInt(map.get(i).get("borrowNum").toString()));
books.add(book);
}
return books;
}
@Override
public List<Book> getBookTypeOverall(String bookTypeId,String startDate,String endDate) {
List<Book> books=new ArrayList();
String sql=null;
//注意这的的判断条件，是空字符串而不是null
if(startDate!=""&&endDate!=""){
sql="select temp.BookId,count(temp.BookId) as borrowNum"
+" from (select b.BorrowDate,b.BooksBarCode,sn.BookId from t_borrowinfo as b"
+" left join t_booksn as sn on b.BooksBarCode=sn.BooksBarCode)"
+" as temp"
+" left join t_book as book on book.BookId=temp.BookId"
+" where book.BookTypeId="+bookTypeId
+" and BorrowDate between '"+startDate+"' and '"+endDate
+"' group by book.BookId"
+" order by borrowNum desc"
+" limit 30";
}else{
sql="select temp.BookId,count(temp.BookId) as borrowNum"
+" from (select b.BooksBarCode,sn.BookId from t_borrowinfo as b"
+" left join t_booksn as sn on b.BooksBarCode=sn.BooksBarCode)"
+" as temp"
+" left join t_book as book on book.BookId=temp.BookId"
+" where book.BookTypeId="+bookTypeId
+" group by book.BookId"
+" order by borrowNum desc"
+" limit 30";
}
List<Map> map=borrowInfoDao.findBySql(sql);
for(int i=0;i<map.size();i++){
Book book=new Book();
book=bookDao.getById(Book.class,(Integer)map.get(i).get("BookId"));
book.setBorrowNum(Integer.parseInt(map.get(i).get("borrowNum").toString()));
books.add(book);
}
return books;
}
Dao：因为用了Hibernate，但是用HQL的话有点乏力。。。所以用sql语句查询，利用Hibernate的借口creatSQLQuery，返回的是List<Map>,接受这里数据看上面serviceImpl代码
@SuppressWarnings("unchecked")
@Override
public List<Map> findBySql(String sql) {
SQLQuery q = getCurrentSession().createSQLQuery(sql);
return q.setResultTransformer(Transformers.ALIAS_TO_ENTITY_MAP).list();
}
效果图:
时间： 2024-11-05 20:41:10