JavaWeb - 模糊查询 + 分页

<!--搜索--><formid="searchForm"method="post"action="/product/list.do"><divclass="search"><inputtype="hidden"name="page"value="1"><inputtype="text"name="title"class="search_input"value="${title}"><inputtype="submit"class="search_submit"value=""></div></form><!--分页--><div><%--<ahref="/product/list.do?page=1">首页</a>--%><%--<ahref="/product/list.do?page=${prePage}">上一页</a>--%><%--<ahref="/product/list.do?page=${nextPage}">下一页</a>--%><%--<ahref="/product/list.do?page=${totalPage}">尾页</a>--%><formmethod="post"action="/product/list.do"style="display: inline"><inputtype="hidden"name="page"value="1"><inputtype="hidden"name="title"value="${title}"><inputtype="submit"value="首页"class="btn"></form><formmethod="post"action="/product/list.do"style="display: inline"><inputtype="hidden"name="page"value="${prePage}"><inputtype="hidden"name="title"value="${title}"><inputtype="submit"value="上一页"class="btn"></form><formmethod="post"action="/product/list.do"style="display: inline"><inputtype="hidden"name="page"value="${nextPage}"><inputtype="hidden"name="title"value="${title}"><inputtype="submit"value="下一页"class="btn"></form><formmethod="post"action="/product/list.do"style="display: inline"><inputtype="hidden"name="page"value="${totalPage}"><inputtype="hidden"name="title"value="${title}"><inputtype="submit"value="尾页"class="btn"></form>第${curPage}页/共${totalPage}页</div><!--响应内容省略-->

packagecom.imooc.cart.servlet;
importcom.imooc.cart.data.LocalCache;
importjavax.servlet.ServletException;
importjavax.servlet.http.HttpServlet;
importjavax.servlet.http.HttpServletRequest;
importjavax.servlet.http.HttpServletResponse;
importjava.io.IOException;
/*** 商品（课程）控制器* @version 1.0*/publicclassProductServletextendsHttpServlet {
@Overrideprotectedvoidservice(HttpServletRequestreq, HttpServletResponseresp) throwsServletException, IOException {
Stringname=req.getParameter("title");
StringpageStr=req.getParameter("page");
intpage=1;
if (null!=pageStr&&!"".equals(pageStr)) {
page=Integer.parseInt(pageStr);
        }
inttotalProducts=LocalCache.getProductsCount(name);
inttotalPage=totalProducts%12>0?totalProducts/12+1 : totalProducts/12;
req.setAttribute("curPage", page);
req.setAttribute("prePage", page>1?page-1 : 1);
req.setAttribute("nextPage", totalPage>page?page+1 : totalPage);
req.setAttribute("totalPage", totalPage);
req.setAttribute("title", name);
req.setAttribute("products", LocalCache.getProducts(page, 12, name));
req.getRequestDispatcher("/WEB-INF/views/biz/list.jsp").forward(req, resp);
    }
}

packagecom.imooc.cart.data;
importjava.util.ArrayList;
importjava.util.HashMap;
importjava.util.List;
importjava.util.Map;
/*** 本地缓存* @version 1.0*/publicfinalclassLocalCache {
privatestaticMap<Long, Product>productMap=newHashMap<>();
// 省略...publicstaticList<Product>getProducts(intpage, intsize, Stringname) {
List<Product>products=newArrayList<>();
if (null!=name&&!"".equals(name)) {
productMap.values().forEach(product-> {
if (product.getName().contains(name)) {
products.add(product);
                }
            });
        } else {
products.addAll(productMap.values());
        }
intstart= (page-1) *size;
intend=products.size() >=page*size?page*size : products.size();
returnproducts.subList(start, end);
    }
publicstaticintgetProductsCount(Stringname) {
List<Product>products=newArrayList<>();
if (null!=name&&!"".equals(name)) {
productMap.values().forEach(product-> {
if (product.getName().contains(name)) {
products.add(product);
                }
            });
        } else {
products.addAll(productMap.values());
        }
returnproducts.size();
    }
}