package com.how2java.tmall.service;

import java.util.List;

import com.how2java.tmall.pojo.Category;
import com.how2java.tmall.util.Page;

public interface CategoryService{
	
	public List list();

	public int total();

	public List<Category> listByPage(Page page);
}

package com.how2java.tmall.service.impl;

import java.util.List;

import org.hibernate.criterion.DetachedCriteria;
import org.hibernate.criterion.Order;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.how2java.tmall.dao.impl.DAOImpl;
import com.how2java.tmall.pojo.Category;
import com.how2java.tmall.service.CategoryService;
import com.how2java.tmall.util.Page;

@Service
public class CategoryServiceImpl  implements CategoryService {

	@Autowired DAOImpl dao;
	@Override
	public List list() {
		DetachedCriteria dc = DetachedCriteria.forClass(Category.class);
		dc.addOrder(Order.desc("id"));
		return dao.findByCriteria(dc);
	}
	@Override
	public int total() {
		String hql = "select count(*) from Category ";
		List<Long> l= dao.find(hql);
		if(l.isEmpty())
			return 0;
		Long result= l.get(0);
		return result.intValue();
	}
	@Override
	public List<Category> listByPage(Page page) {
		DetachedCriteria dc = DetachedCriteria.forClass(Category.class);
		dc.addOrder(Order.desc("id"));
		return dao.findByCriteria(dc,page.getStart(),page.getCount());
	}
}

package com.how2java.tmall.action;

import java.util.List;

import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.Namespace;
import org.apache.struts2.convention.annotation.ParentPackage;
import org.apache.struts2.convention.annotation.Result;
import org.apache.struts2.convention.annotation.Results;
import org.springframework.beans.factory.annotation.Autowired;

import com.how2java.tmall.pojo.Category;
import com.how2java.tmall.service.CategoryService;
import com.how2java.tmall.util.Page;

@Namespace("/")
@ParentPackage("basicstruts")  
@Results(
		{
			/*分类管理*/
			@Result(name="listCategory", location="/admin/listCategory.jsp"),
		})
public class CategoryAction {
	
	@Autowired 
	CategoryService categoryService;

	List<Category> categorys;

	Page page;
	
	@Action("admin_category_list")
	public String list() {
		
		if(page==null)
			page = new Page();
		int total = categoryService.total();
		page.setTotal(total);
		categorys = categoryService.listByPage(page);
		return "listCategory";
	}

	public List<Category> getCategorys() {
		return categorys;
	}

	public void setCategorys(List<Category> categorys) {
		this.categorys = categorys;
	}

	public Page getPage() {
		return page;
	}

	public void setPage(Page page) {
		this.page = page;
	}

}

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8" import="java.util.*"%>
 
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@include file="../include/admin/adminHeader.jsp"%>
<%@include file="../include/admin/adminNavigator.jsp"%>

<script>
$(function(){
	
	$("#addForm").submit(function(){
		if(!checkEmpty("name","分类名称"))
			return false;
		if(!checkEmpty("categoryPic","分类上传图片"))
			return false;		
		return true;
	});
});

</script>

<title>分类管理</title>

<div class="workingArea">
	<h1 class="label label-info" >分类管理</h1>
	<br>
	<br>
	
	<div class="listDataTableDiv">
		<table class="table table-striped table-bordered table-hover  table-condensed">
			<thead>
				<tr class="success">
					<th>ID</th>
					<th>图片</th>
					<th>分类名称</th>
					<th>属性管理</th>
					<th>产品管理</th>
					<th>编辑</th>
					<th>删除</th>
				</tr>
			</thead>
			<tbody>
				<c:forEach items="${categorys}" var="c">
				
				<tr>
					<td>${c.id}</td>
					<td><img height="40px" src="img/category/${c.id}.jpg"></td>
					<td>${c.name}</td>
					 	
					<td><a href="admin_property_list?category.id=${c.id}"><span class="glyphicon glyphicon-th-list"></span></a></td>					
					<td><a href="admin_product_list?category.id=${c.id}"><span class="glyphicon glyphicon-shopping-cart"></span></a></td>					
					<td><a href="admin_category_edit?category.id=${c.id}"><span class="glyphicon glyphicon-edit"></span></a></td>
					<td><a deleteLink="true" href="admin_category_delete?category.id=${c.id}"><span class=" 	glyphicon glyphicon-trash"></span></a></td>
	
				</tr>
				</c:forEach>
			</tbody>
		</table>
	</div>
	
	<div class="pageDiv">
		<%@include file="../include/admin/adminPage.jsp" %>
	</div>
	
	<div class="panel panel-warning addDiv">
	  <div class="panel-heading">新增分类</div>
	  <div class="panel-body">
	    	<form method="post" id="addForm" action="admin_category_add" enctype="multipart/form-data">
	    		<table class="addTable">
	    			<tr>
	    				<td>分类名称</td>
	    				<td><input  id="name" name="category.name" type="text" class="form-control"></td>
	    			</tr>
	    			<tr>
	    				<td>分类圖片</td>
	    				<td>
	    					<input id="categoryPic" type="file" name="img" />
	    				</td>
	    			</tr>
	    			<tr class="submitTR">
	    				<td colspan="2" align="center">
	    					<button type="submit" class="btn btn-success">提 交</button>
	    				</td>
	    			</tr>
	    		</table>
	    	</form>
	  </div>
	</div>
	
</div>

<%@include file="../include/admin/adminFooter.jsp"%>

<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8" isELIgnored="false"%>

<script>
$(function(){
	$("ul.pagination li.disabled a").click(function(){
		return false;
	});
});

</script>

<nav>
  <ul class="pagination">
    <li>
      <a  href="?page.start=0" aria-label="Previous" >
        <span aria-hidden="true">«</span>
      </a>
    </li>

    <li >
      <a  href="?page.start=${page.start-page.count}" aria-label="Previous" >
        <span aria-hidden="true">‹</span>
      </a>
    </li>    

    <c:forEach begin="0" end="${page.totalPage-1}" varStatus="status">
		    <li>
		    	<a href="?page.start=${status.index*page.count}" class="current">${status.count}</a>
		    </li>

    </c:forEach>

    <li >
      <a href="?page.start=${page.start+page.count}" aria-label="Next">
        <span aria-hidden="true">›</span>
      </a>
    </li>
    <li >
      <a href="?page.start=${page.last}" aria-label="Next">
        <span aria-hidden="true">»</span>
      </a>
    </li>
  </ul>
</nav>