旅游线路名称查询
查询参数的传递
在header.html中
$("#search-button").click(function () { //线路名称 var rname = $("#search_input").val(); var cid = getParameter("cid"); // 跳转路径 http://localhost/travel/route_list.html?cid=5,拼接上rname=xxx location.href="http://localhost/travel/route_list.html?cid="+cid+"&rname="+rname; });
在route_list.html
var cid = getParameter("cid"); //获取rname的参数值 var rname = getParameter("rname"); //判断rname如果不为null或者"" if(rname){ //url解码 rname = window.decodeURIComponent(rname); }
RouteServlet
@WebServlet("/route/*") public class RouteServlet extends BaseServlet { private RouteService routeService = new RouteServiceImpl(); /** * 分页查询 * @param request * @param response * @throws ServletException * @throws IOException */ public void pageQuery(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { //1.接受参数 String currentPageStr = request.getParameter("currentPage"); String pageSizeStr = request.getParameter("pageSize"); String cidStr = request.getParameter("cid"); //接受rname 线路名称 String rname = request.getParameter("rname"); rname = new String(rname.getBytes("iso-8859-1"),"utf-8"); int cid = 0;//类别id //2.处理参数 if(cidStr != null && cidStr.length() > 0){ cid = Integer.parseInt(cidStr); } int currentPage = 0;//当前页码,如果不传递,则默认为第一页 if(currentPageStr != null && currentPageStr.length() > 0){ currentPage = Integer.parseInt(currentPageStr); }else{ currentPage = 1; } int pageSize = 0;//每页显示条数,如果不传递,默认每页显示5条记录 if(pageSizeStr != null && pageSizeStr.length() > 0){ pageSize = Integer.parseInt(pageSizeStr); }else{ pageSize = 5; } //3. 调用service查询PageBean对象 PageBean<Route> pb = routeService.pageQuery(cid, currentPage, pageSize,rname); //4. 将pageBean对象序列化为json,返回 writeValue(pb,response); } }
servletImpl
public PageBean<Route> pageQuery(int cid, int currentPage, int pageSize,String rname ) { //封装PageBean PageBean<Route> pb = new PageBean<Route>(); //设置当前页码 pb.setCurrentPage(currentPage); //设置每页显示条数 pb.setPageSize(pageSize); //设置总记录数 int totalCount = routeDao.findTotalCount(cid,rname); pb.setTotalCount(totalCount); //设置当前页显示的数据集合 int start = (currentPage - 1) * pageSize;//开始的记录数 List<Route> list = routeDao.findByPage(cid,start,pageSize,rname); pb.setList(list); //设置总页数 = 总记录数/每页显示条数 int totalPage = totalCount % pageSize == 0 ? totalCount / pageSize :(totalCount / pageSize) + 1 ; pb.setTotalPage(totalPage); return pb; }
Dao
@Override public int findTotalCount(int cid,String rname) { //String sql = "select count(*) from tab_route where cid = ?"; //1.定义sql模板 String sql = "select count(*) from tab_route where 1=1 "; StringBuilder sb = new StringBuilder(sql); List params = new ArrayList();//条件们 //2.判断参数是否有值 if(cid != 0){ sb.append( " and cid = ? "); params.add(cid);//添加?对应的值 } if(rname != null && rname.length() > 0){ sb.append(" and rname like ? "); params.add("%"+rname+"%"); } sql = sb.toString(); return template.queryForObject(sql,Integer.class,params.toArray()); } @Override public List<Route> findByPage(int cid, int start, int pageSize,String rname) { //String sql = "select * from tab_route where cid = ? and rname like ? limit ? , ?"; String sql = " select * from tab_route where 1 = 1 "; //1.定义sql模板 StringBuilder sb = new StringBuilder(sql); List params = new ArrayList();//条件们 //2.判断参数是否有值 if(cid != 0){ sb.append( " and cid = ? "); params.add(cid);//添加?对应的值 } if(rname != null && rname.length() > 0){ sb.append(" and rname like ? "); params.add("%"+rname+"%"); } sb.append(" limit ? , ? ");//分页条件 sql = sb.toString(); params.add(start); params.add(pageSize); return template.query(sql,new BeanPropertyRowMapper<Route>(Route.class),params.toArray()); }
header.html
$(function () { /* var search = location.search; //alert(search);//?id=5 // 切割字符串,拿到第二个值 var cid = search.split("=")[1];*/ //获取cid的参数值 var cid = getParameter("cid"); //获取rname的参数值 var rname = getParameter("rname"); //判断rname如果不为null或者"" if(rname){ //url解码 rname = window.decodeURIComponent(rname); } //当页码加载完成后,调用load方法,发送ajax请求加载数据 load(cid,null,rname); }); function load(cid ,currentPage,rname){ //发送ajax请求,请求route/pageQuery,传递cid $.get("route/pageQuery",{cid:cid,currentPage:currentPage,rname:rname},function (pb) { //解析pagebean数据,展示到页面上 //1.分页工具条数据展示 //1.1 展示总页码和总记录数 $("#totalPage").html(pb.totalPage); $("#totalCount").html(pb.totalCount); /* <li><a href="">首页</a></li> <li class="threeword"><a href="#">上一页</a></li> <li class="curPage"><a href="#">1</a></li> <li><a href="#">2</a></li> <li><a href="#">3</a></li> <li><a href="#">4</a></li> <li><a href="#">5</a></li> <li><a href="#">6</a></li> <li><a href="#">7</a></li> <li><a href="#">8</a></li> <li><a href="#">9</a></li> <li><a href="#">10</a></li> <li class="threeword"><a href="javascript:;">下一页</a></li> <li class="threeword"><a href="javascript:;">末页</a></li> */ var lis = ""; var fristPage = '<li onclick="javascipt:load('+cid+',1,\''+rname+'\')"><a href="javascript:void(0)">首页</a></li>'; //计算上一页的页码 var beforeNum = pb.currentPage - 1; if(beforeNum <= 0){ beforeNum = 1; } var beforePage = '<li onclick="javascipt:load('+cid+','+beforeNum+',\''+rname+'\')" class="threeword"><a href="javascript:void(0)">上一页</a></li>'; lis += fristPage; lis += beforePage; //1.2 展示分页页码 /* 1.一共展示10个页码,能够达到前5后4的效果 2.如果前边不够5个,后边补齐10个 3.如果后边不足4个,前边补齐10个 */ // 定义开始位置begin,结束位置 end var begin; // 开始位置 var end ; // 结束位置 //1.要显示10个页码 if(pb.totalPage < 10){ //总页码不够10页 begin = 1; end = pb.totalPage; }else{ //总页码超过10页 begin = pb.currentPage - 5 ; end = pb.currentPage + 4 ; //2.如果前边不够5个,后边补齐10个 if(begin < 1){ begin = 1; end = begin + 9; } //3.如果后边不足4个,前边补齐10个 if(end > pb.totalPage){ end = pb.totalPage; begin = end - 9 ; } } for (var i = begin; i <= end ; i++) { var li; //判断当前页码是否等于i if(pb.currentPage == i){ li = '<li class="curPage" onclick="javascipt:load('+cid+','+i+',\''+rname+'\')"><a href="javascript:void(0)">'+i+'</a></li>'; }else{ //创建页码的li li = '<li onclick="javascipt:load('+cid+','+i+',\''+rname+'\')"><a href="javascript:void(0)">'+i+'</a></li>'; } //拼接字符串 lis += li; } /* for (var i = 1; i <= pb.totalPage ; i++) { var li; //判断当前页码是否等于i if(pb.currentPage == i){ li = '<li class="curPage" onclick="javascipt:load('+cid+','+i+')"><a href="javascript:void(0)">'+i+'</a></li>'; }else{ //创建页码的li li = '<li onclick="javascipt:load('+cid+','+i+')"><a href="javascript:void(0)">'+i+'</a></li>'; } //拼接字符串 lis += li; }*/ var lastPage = '<li class="threeword"><a href="javascript:;">末页</a></li>'; var nextPage = '<li class="threeword"><a href="javascript:;">下一页</a></li>'; lis += nextPage; lis += lastPage; //将lis内容设置到 ul $("#pageNum").html(lis); /* <li> <div class="img"><img src="images/04-search_03.jpg" alt=""></div> <div class="text1"> <p>【减100元 含除夕/春节出发】广州增城三英温泉度假酒店/自由行套票</p> <br/> <p>1-2月出发,网付立享¥1099/2人起!爆款位置有限,抢完即止!</p> </div> <div class="price"> <p class="price_num"> <span>¥</span> <span>299</span> <span>起</span> </p> <p><a href="route_detail.html">查看详情</a></p> </div> </li> */ //2.列表数据展示 var route_lis = ""; for (var i = 0; i < pb.list.length; i++) { //获取{rid:1,rname:"xxx"} var route = pb.list[i]; var li = '<li>\n' + ' <div class="img"><img src="'+route.rimage+'" style="width: 299px;"></div>\n' + ' <div class="text1">\n' + ' <p>'+route.rname+'</p>\n' + ' <br/>\n' + ' <p>'+route.routeIntroduce+'</p>\n' + ' </div>\n' + ' <div class="price">\n' + ' <p class="price_num">\n' + ' <span>¥</span>\n' + ' <span>'+route.price+'</span>\n' + ' <span>起</span>\n' + ' </p>\n' + ' <p><a href="route_detail.html">查看详情</a></p>\n' + ' </div>\n' + ' </li>'; route_lis += li; } $("#route").html(route_lis); //定位到页面顶部 window.scrollTo(0,0); }); }
RouteServlet
标签:rname,pageSize,948,cid,946,route,查询,pb,var From: https://www.cnblogs.com/agzq/p/17171216.html