首先看前端的样式图片实现效果
其中前台代码为：
<div class="search_item">
<span style="color: #ff4910">订单条件查询 </span>
<span>按时间：</span>
<div class="item">
<input type="radio" value="Asc" name="sortByTime" > 升序
</div>
<div class="item">
<input type="radio" value="Desc" name="sortByTime" checked>降序
</div>
</div>
<div class="search_item">
<span>日期：</span>
<div class="item">
<select name="year">
<option value="0">不限</option>
<c:forEach var="i" begin="2010" step="1" end="2020">
<option value="${i}">${i}</option>
</c:forEach>
</select>年
</div>
<div class="item">
<select name="month">
<option value="0" selected>不限</option>
<c:forEach var="i" begin="1" step="1" end="12">
<option value="${i}">${i}</option>
</c:forEach>
</select>月
</div>
<div class="item">
<select name="day">
<option value="0" selected>不限</option>
<c:forEach var="i" begin="1" step="1" end="31">
<option value="${i}">${i}</option>
</c:forEach>
</select>日
</div>
书写后台GoodsOrderSearchBytime.java代码为：
package servlet.GoodsOrder;
import javaBean.GoodsOrder;
import javaBean.Page;
import javaBean.User;
import services.GoodsOrderServices;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
@WebServlet("/GoodsOrderSearchBytime")
public class GoodsOrderSearchBytime extends HttpServlet{
GoodsOrderServices goodsOrderServices = new GoodsOrderServices();
public int getPageCode(HttpServletRequest request){
// 先获取从客户端传过来的参数
String pc = request.getParameter("pc");
// 进行判断
if(pc == null || pc.trim().isEmpty()){
// 返回第一页
return 1;
}
return Integer.parseInt(pc);
}
@Override
public void service(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
User user = (User)request.getSession().getAttribute("my");
if(user==null)
request.getRequestDispatcher("/login.jsp").forward(request,response);
String date = "%";
String sortByTime = request.getParameter("sortByTime");
String year = request.getParameter("year");
String month = request.getParameter("month");
String day = request.getParameter("day");
String keyWord = request.getParameter("keyWord");
if(!year.equals("0")){
date = year+"-";
System.out.println("年为："+year);
}
else {
date = date+"-";
}
if(!month.equals("0")){
date = date+"%"+month+"-";
}
else {
date = date+"%-";
}
if(!day.equals("0")){
date = date+"%"+day+"%";
}
else {
date = date+"%";
}
int pageCode = getPageCode(request);
int pageSize = 2;
if(keyWord.equals("")){
Page<GoodsOrder> page = goodsOrderServices.findByPage
( pageCode, pageSize ,user.getUid(), sortByTime, date);
//不将page建立session
request.setAttribute("page",page);
// 不将page.getGoodsBeanList（）建立session
request.setAttribute("goodsOrders",page.getGoodsOrderBeanList());
request.setAttribute("PageCode",page.getPageCode());
request.setAttribute("PageSize",page.getPageSize());
request.setAttribute("TotalPage",page.getTotalPage());
request.getRequestDispatcher("/JSP/user/userInfo.jsp").forward(request,response);
}
else {
Page<GoodsOrder> page = goodsOrderServices.findByPage2
( pageCode, pageSize ,user.getUid(), keyWord, sortByTime);
System.out.println("uid为："+user.getUid());
//不将page建立session
request.setAttribute("page",page);
// 不将page.getGoodsBeanList（）建立session
request.setAttribute("goodsOrders",page.getGoodsOrderBeanList());
request.setAttribute("PageCode",page.getPageCode());
request.setAttribute("PageSize",page.getPageSize());
request.setAttribute("TotalPage",page.getTotalPage());
request.getRequestDispatcher("/JSP/user/userInfo.jsp").forward(request,response);
}
}
}
service层代码为：
// pageCode, pageSize ,user.getUid(),sortByTime,keyWord,date
public Page<GoodsOrder> findByPage(int pageCode, int pageSize,
String uid, String sortTime, String date ) {
return goodsOrderDao.findByPage(pageCode, pageSize, uid, sortTime, date);
}
// keyword
public Page<GoodsOrder> findByPage2(int pageCode, int pageSize, String uid, String keyword , String sortByTime) {
return goodsOrderDao.findByPage2(pageCode, pageSize, uid , keyword , sortByTime);
}
后台dao层代码为：
//有日期的查找
public Page<GoodsOrder> findByPage(int pageCode, int pageSize, String uid ,String sortTime, String date ) {
// 创建PageBean对象
Page<GoodsOrder> page = new Page<GoodsOrder>();
page.setPageCode(pageCode);
page.setPageSize(pageSize);
// totalPage 计算不用处理
// totalCount 总记录数
// 通过uid就可以搜索他发布的二手商品，也就是说要
String SQL = " select count(*) from " + tableName + " where otime like '" + date +"' and uid = ? ";
try {
long count;
ResultSet rs = JDBCHelper.query( SQL , uid ) ;
if(rs.next()) {
count = rs.getInt(1);
page.setTotalCount((int) count);
}
// beanList 数据
// 通过uid就可以搜索他发布的二手商品，也就是说要 select * from usedGoods where uid = ? order by uid desc limit ? , ?
String selSql = "";
if(sortTime.equals("Asc")){
selSql = " select * from " + tableName + " where otime like '" + date +"' and uid = ? order by oid Asc limit ? , ? ";
} else {
selSql = " select * from " + tableName + " where otime like '" + date +"' and uid = ? order by oid Desc limit ? , ? ";
}
ResultSet goodsOrderList = JDBCHelper.query(selSql,uid, (pageCode-1)*pageSize, pageSize);
List<GoodsOrder> goodsOrderBeanList = search(goodsOrderList);
// 把每页显示的数据设置成功了
page.setGoodsOrderBeanList(goodsOrderBeanList);
// 所有的数据全部都封装成功了！！
return page;
} catch (SQLException e) {
e.printStackTrace();
throw new RuntimeException(e);
}
}
//有关键字的查找
public Page<GoodsOrder> findByPage2(int pageCode, int pageSize, String uid , String keyword , String sortByTime) {
// 创建PageBean对象
Page<GoodsOrder> page = new Page<GoodsOrder>();
page.setPageCode(pageCode);
page.setPageSize(pageSize);
// totalPage 计算不用处理
// totalCount 总记录数
// 通过uid就可以搜索他发布的二手商品，也就是说要
String SQL = " select count(*) from " + tableName + " where uid = ? and name like '%" +keyword +"%' ";
try {
long count;
ResultSet rs = JDBCHelper.query( SQL , uid ) ;
if(rs.next()) {
count = rs.getInt(1);
page.setTotalCount((int) count);
}
// beanList 数据
String selSql = "";
if(sortByTime.equals("Asc")){
selSql = " select * from " + tableName + " where uid = ? and name like '%" +keyword +"%' order by oid Asc limit ? , ? ";
}
else {
selSql = " select * from " + tableName + " where uid = ? and name like '%" +keyword +"%' order by oid Desc limit ? , ? ";
}
ResultSet goodsOrderList = JDBCHelper.query(selSql,uid, (pageCode-1)*pageSize, pageSize);
List<GoodsOrder> goodsOrderBeanList = search(goodsOrderList);
// 把每页显示的数据设置成功了
page.setGoodsOrderBeanList(goodsOrderBeanList);
// 所有的数据全部都封装成功了！！
return page;
} catch (SQLException e) {
e.printStackTrace();
throw new RuntimeException(e);
}
}