jQuery+s2sh 实现无限级tree
1：成果预览图
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2：实现过程
a: 框架的搭建：效果图(因为本文章的重点是对treeView的实现，所以框架的搭建就不在多说)
b:创建t_category 表格
c:创建实体模型Category
package com.yangchenhui.model;import java.util.HashSet;import java.util.Set;public class Category implements java.io.Serializable {private static final long serialVersionUID = -8759167738763128025L;private Integer categoryId;private Category category;private String categoryName;private Integer depth;private Set<Category> categories = new HashSet<Category>(0);// Constructors/** default constructor */public Category() {}/** minimal constructor */public Category(String categoryName) {this.categoryName = categoryName;}/** full constructor */public Category(Category category, String categoryName, Integer depth,Set<Category> categories) {this.category = category;this.categoryName = categoryName;this.depth = depth;this.categories = categories;}// Property accessorspublic Integer getCategoryId() {return this.categoryId;}public void setCategoryId(Integer categoryId) {this.categoryId = categoryId;}public Category getCategory() {return this.category;}public void setCategory(Category category) {this.category = category;}public String getCategoryName() {return this.categoryName;}public void setCategoryName(String categoryName) {this.categoryName = categoryName;}public Integer getDepth() {return this.depth;}public void setDepth(Integer depth) {this.depth = depth;}public Set<Category> getCategories() {return this.categories;}public void setCategories(Set<Category> categories) {this.categories = categories;}} package com.yangchenhui.dao;import java.util.List;import com.yangchenhui.model.Category;public interface CategoryDAO {public abstract void save(Category transientInstance);public abstract void delete(Category persistentInstance);public abstract Category findById(java.lang.Integer id);public abstract List findByExample(Category instance);public abstract List findByProperty(String propertyName, Object value);public abstract List findByCategoryName(Object categoryName);public abstract List findByDepth(Object depth);public abstract List findAll();public abstract Category merge(Category detachedInstance);public abstract void attachDirty(Category instance);public abstract void attachClean(Category instance);void deleteCategoryByParentId(Integer categoryId);}package com.yangchenhui.dao;import java.util.List;import java.util.Set;import org.hibernate.LockMode;import org.hibernate.Query;import org.hibernate.criterion.Example;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.orm.hibernate3.support.HibernateDaoSupport;import com.yangchenhui.model.Category;/** * A data access object (DAO) providing persistence and search support for * Category entities. Transaction control of the save(), update() and delete() * operations can directly support Spring container-managed transactions or they * can be augmented to handle user-managed Spring transactions. Each of these * methods provides additional information for how to configure it for the * desired type of transaction control. * * @see com.yangchenhui.model.Category * @author MyEclipse Persistence Tools */public class CategoryDAOImpl extends HibernateDaoSupport implements CategoryDAO {private static final Logger log = LoggerFactory.getLogger(CategoryDAOImpl.class);// property constantspublic static final String CATEGORY_NAME = "categoryName";public static final String DEPTH = "depth";/* (non-Javadoc) * @see com.yangchenhui.dao.CategoryDAO#save(com.yangchenhui.model.Category) */@Overridepublic void save(Category transientInstance) {log.debug("saving Category instance");try {getSession().save(transientInstance);log.debug("save successful");} catch (RuntimeException re) {log.error("save failed", re);throw re;}}/* (non-Javadoc) * @see com.yangchenhui.dao.CategoryDAO#delete(com.yangchenhui.model.Category) */@Overridepublic void delete(Category persistentInstance) {log.debug("deleting Category instance");try {getSession().delete(persistentInstance);log.debug("delete successful");} catch (RuntimeException re) {log.error("delete failed", re);throw re;}}/* (non-Javadoc) * @see com.yangchenhui.dao.CategoryDAO#findById(java.lang.Integer) */@Overridepublic Category findById(java.lang.Integer id) {log.debug("getting Category instance with id: " + id);try {Category instance = (Category) getSession().get("com.yangchenhui.model.Category", id);return instance;} catch (RuntimeException re) {log.error("get failed", re);throw re;}}/* (non-Javadoc) * @see com.yangchenhui.dao.CategoryDAO#findByExample(com.yangchenhui.model.Category) */@Overridepublic List findByExample(Category instance) {log.debug("finding Category instance by example");try {List results = getSession().createCriteria("com.yangchenhui.model.Category").add(Example.create(instance)).list();log.debug("find by example successful, result size: "+ results.size());return results;} catch (RuntimeException re) {log.error("find by example failed", re);throw re;}}/* (non-Javadoc) * @see com.yangchenhui.dao.CategoryDAO#findByProperty(java.lang.String, java.lang.Object) */@Overridepublic List findByProperty(String propertyName, Object value) {log.debug("finding Category instance with property: " + propertyName+ ", value: " + value);try {String queryString = "from Category as model where model."+ propertyName + "= ?";Query queryObject = getSession().createQuery(queryString);queryObject.setParameter(0, value);return queryObject.list();} catch (RuntimeException re) {log.error("find by property name failed", re);throw re;}}/* (non-Javadoc) * @see com.yangchenhui.dao.CategoryDAO#findByCategoryName(java.lang.Object) */@Overridepublic List findByCategoryName(Object categoryName) {return findByProperty(CATEGORY_NAME, categoryName);}/* (non-Javadoc) * @see com.yangchenhui.dao.CategoryDAO#findByDepth(java.lang.Object) */@Overridepublic List findByDepth(Object depth) {return findByProperty(DEPTH, depth);}/* (non-Javadoc) * @see com.yangchenhui.dao.CategoryDAO#findAll() */@Overridepublic List findAll() {log.debug("finding all Category instances");try {String queryString = "from Category";Query queryObject = getSession().createQuery(queryString);return queryObject.list();} catch (RuntimeException re) {log.error("find all failed", re);throw re;}}/* (non-Javadoc) * @see com.yangchenhui.dao.CategoryDAO#merge(com.yangchenhui.model.Category) */@Overridepublic Category merge(Category detachedInstance) {log.debug("merging Category instance");try {Category result = (Category) getSession().merge(detachedInstance);log.debug("merge successful");return result;} catch (RuntimeException re) {log.error("merge failed", re);throw re;}}/* (non-Javadoc) * @see com.yangchenhui.dao.CategoryDAO#attachDirty(com.yangchenhui.model.Category) */@Overridepublic void attachDirty(Category instance) {log.debug("attaching dirty Category instance");try {getSession().saveOrUpdate(instance);log.debug("attach successful");} catch (RuntimeException re) {log.error("attach failed", re);throw re;}}/* (non-Javadoc) * @see com.yangchenhui.dao.CategoryDAO#attachClean(com.yangchenhui.model.Category) */@Overridepublic void attachClean(Category instance) {log.debug("attaching clean Category instance");try {getSession().lock(instance, LockMode.NONE);log.debug("attach successful");} catch (RuntimeException re) {log.error("attach failed", re);throw re;}}@Overridepublic void deleteCategoryByParentId(Integer categoryId){log.debug("deleting Category instance");try {Query query = getSession().createQuery("delete from Category c where c.category.categoryId = " + categoryId);query.executeUpdate();log.debug("delete successful");} catch (RuntimeException re) {log.error("delete failed", re);throw re;}}}<?xml version="1.0" encoding="utf-8"?><!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN""http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"><!-- Mapping file autogenerated by MyEclipse Persistence Tools--><hibernate-mapping> <class name="com.yangchenhui.model.Category" table="t_category" catalog="ambow"> <id name="categoryId" type="java.lang.Integer"> <column name="categoryId" /> <generator fetch="select"> <column name="parentId" /> </many-to-one> <property name="categoryName" type="java.lang.String"> <column name="categoryName" length="20" not-null="true" /> </property> <property name="depth" type="java.lang.Integer"> <column name="depth" /> </property> <set name="categories" inverse="true"> <key> <column name="parentId" /> </key> <one-to-many /> </set> </class></hibernate-mapping>
package com.yagnchenhui.servlet;import java.io.IOException;import java.io.PrintWriter;import java.util.List;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.springframework.web.context.WebApplicationContext;import org.springframework.web.context.support.WebApplicationContextUtils;import com.yangchenhui.model.Category;import com.yangchenhui.service.CategoryService;public class CategoryFindAllServlet extends HttpServlet {private CategoryService categoryService;/** * Destruction of the servlet. <br> */public void destroy() {super.destroy(); // Just puts "destroy" string in log// Put your code here}public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {this.doPost(request, response);}public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException { response.setContentType("text/json;charset=UTF-8"); response.setHeader("Cache-Control", "no-cache"); response.setContentType("text/json;charset=UTF-8"); PrintWriter out = response.getWriter();String sb = getRootNode();System.out.println(sb);out.print(sb.toString());out.flush();out.close(); }public String getRootNode() {StringBuffer sb = new StringBuffer();sb.append("[");sb.append("{");sb.append(""text":"分类"");sb.append(","classes":"categoryRoot"");sb.append(","expanded":true");sb.append(","children":"+getOneNode(categoryService.queryOneLevelParentsCategory()) +"");sb.append("}");sb.append("]");return sb.toString();}public String getOneNode(List<Category> categoryList){StringBuffer sb = new StringBuffer();sb.append("[");for(int i = 0; i < categoryList.size(); i++){if(categoryList.get(i).getCategory() == null){if(i == 0){sb.append("{");sb.append(""text":"" + categoryList.get(i).getCategoryName() + """);sb.append(","id":""+ categoryList.get(i).getCategoryId()+""");sb.append(","classes":"categoryOneLevel"");sb.append(","expanded":true");sb.append(","children":" + getTwoNode(categoryList.get(i).getCategoryId()) + "");sb.append("}");}else{sb.append(",{");sb.append(""text":"" + categoryList.get(i).getCategoryName() + """);sb.append(","id":""+ categoryList.get(i).getCategoryId()+""");sb.append(","classes":"categoryOneLevel"");sb.append(","expanded":true");sb.append(","children":" + getTwoNode(categoryList.get(i).getCategoryId()) + "");sb.append("}");}}}sb.append("]");return sb.toString();}public String getTwoNode(Integer parentId){List<Category> children = categoryService.queryChildrenCategoryByParentId(parentId);StringBuffer sb = new StringBuffer();sb.append("[");for(int i = 0; i < children.size(); i++){if(i == 0){sb.append("{");sb.append(""text":"" + children.get(i).getCategoryName() + """);sb.append(","classes":"categoryOneLevel"");sb.append(","id":""+ children.get(i).getCategoryId()+""");if(categoryService.hasChildren(children.get(i).getCategoryId())){sb.append(","children":"+getTwoNode(children.get(i).getCategoryId())+ "");sb.append("}");}else{sb.append("}");}}else{sb.append(",{");sb.append(""text":"" + children.get(i).getCategoryName() + """);sb.append(","classes":"categoryOneLevel"");sb.append(","id":""+ children.get(i).getCategoryId()+""");if(categoryService.hasChildren(children.get(i).getCategoryId())){sb.append(","children":"+getTwoNode(children.get(i).getCategoryId())+ "");sb.append("}");}else{sb.append("}");}}}sb.append("]");return sb.toString();}/** * Initialization of the servlet. <br> * * @throws ServletException if an error occurs */public void init() throws ServletException {WebApplicationContext wpc = WebApplicationContextUtils.getWebApplicationContext(this.getServletContext());categoryService = (CategoryService) wpc.getBean("categoryService");}}<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>index.html</title><meta http-equiv="content-type" content="text/html; charset=utf-8"/> <link rel="stylesheet" href="css/jquery.treeview.css" /><link rel="stylesheet" href="css/screen.css" /> <script type="text/javascript" src="js/jquery-1.7.2.js"> </script><script type="text/javascript" src="js/jquery.treeview.js"> </script><script type="text/javascript" src="js/jquery.cookie.js"> </script><script type="text/javascript" src="js/jquery.treeview.async.js"> </script><script type="text/javascript" src="js/jquery.contextmenu.r2.js"></script><script type="text/javascript" src="js/category.js"></script><script type="text/javascript">$(document).ready(function(){$("#navigation").treeview({animated: "fast",collapsed: true,unique: true,persist: "location",url: "categoryFindAllServlet"}); });</script> </head> <body> <ul id="navigation" id="rootMenu">[list]<li id="addOneLevelCategory">新增一级分类</li><li id="deleteAllOneLevelCategory">删除所有一级分类</li>[/list]</div><div id="OneMenu">[list]<li id="editOneLevelCategory">编辑</li><li id="deleteOneLevelCategory">删除</li><li id="addChildCategory">新增子分类</li>[/list]</div> </body></html>/* * Async Treeview 0.1 - Lazy-loading extension for Treeview * * http://bassistance.de/jquery-plugins/jquery-plugin-treeview/ * * Copyright (c) 2007 J?rn Zaefferer * * Dual licensed under the MIT and GPL licenses: * http://www.opensource.org/licenses/mit-license.php * http://www.gnu.org/licenses/gpl.html * * Revision: $Id$ * */;(function($) {function load(settings, root, child, container) {function createNode(parent) {var current = $("<li/>").attr("id", this.id || "").html("<span>" + this.text + "</span>").appendTo(parent);if (this.classes) {current.children("span").addClass(this.classes);}if (this.expanded) {current.addClass("open");}if (this.hasChildren || this.children && this.children.length) {var branch = $("<ul/>").appendTo(current);if (this.hasChildren) {current.addClass("hasChildren");createNode.call({classes: "placeholder",text: " ",children:[]}, branch);}if (this.children && this.children.length) {$.each(this.children, createNode, [branch]);}} }$.ajax($.extend(true, {url: settings.url,dataType: "json",data: {root: root},success: function(response) {child.empty();$.each(response, createNode, [child]); $(container).treeview({add: child}); //代码添加的开始$("span.categoryRoot").contextMenu("rootMenu",{bindings:{addOneLevelCategory:addOneLevelCategory,deleteAllOneLevelCategory:deleteAllOneLevelCategory}}); $("span.categoryOneLevel").contextMenu("OneMenu",{ bindings:{ editOneLevelCategory:editOneLevelCategory, deleteOneLevelCategory:deleteOneLevelCategory, addChildCategory:addChildCategory } }); //代码添加的结束 }}, settings.ajax));/*$.getJSON(settings.url, {root: root}, function(response) {function createNode(parent) {var current = $("<li/>").attr("id", this.id || "").html("<span>" + this.text + "</span>").appendTo(parent);if (this.classes) {current.children("span").addClass(this.classes);}if (this.expanded) {current.addClass("open");}if (this.hasChildren || this.children && this.children.length) {var branch = $("<ul/>").appendTo(current);if (this.hasChildren) {current.addClass("hasChildren");createNode.call({classes: "placeholder",text: " ",children:[]}, branch);}if (this.children && this.children.length) {$.each(this.children, createNode, [branch])}}}child.empty();$.each(response, createNode, [child]); $(container).treeview({add: child}); }); */}var proxied = $.fn.treeview;$.fn.treeview = function(settings) {if (!settings.url) {return proxied.apply(this, arguments);}var container = this;if (!container.children().size())load(settings, "source", this, container);var userToggle = settings.toggle;return proxied.call(this, $.extend({}, settings, {collapsed: true,toggle: function() {var $this = $(this);if ($this.hasClass("hasChildren")) {var childList = $this.removeClass("hasChildren").find("ul");load(settings, this.id, childList, container);}if (userToggle) {userToggle.apply(this, arguments);}}}));};})(jQuery);/** * 增加一级类别的函数 */function addOneLevelCategory(){var categoryOneLevelValue = window.prompt("请输入要添加的类别的分类","");$.post("categoryAdd.action",{categoryOneLevelValue:categoryOneLevelValue},function (data,textStatus){$("#navigation").empty();$("#navigation").treeview({animated: "fast",//由它来决定收缩和展开效果collapsed: true,unique: true,persist: "location",url:"categoryFindAllServlet"});});}/** * 删除所有的一级节点类别 */function deleteAllOneLevelCategory(){alert("你好");}/** * 编辑一级节点的信息 */function editOneLevelCategory(data){var categoryOneLevelValue = window.prompt("请输入要修改的一级节点的名称","");$.post("categoryEdit.action",{categoryOneLevelValue:categoryOneLevelValue,categoryId:data.parentNode.id},function (data,textStatus){$("#navigation").empty();$("#navigation").treeview({animated: "fast",//由它来决定收缩和展开效果collapsed: true,unique: true,persist: "location",url:"categoryFindAllServlet"});});}function deleteOneLevelCategory(data){var confim = window.confirm("你确定要删除这个类别一级其所有的自类别吗？");if(confim){$.post("categoryDelete.action",{categoryId:data.parentNode.id},function (data,textStatus){$("#navigation").empty();$("#navigation").treeview({animated: "fast",//由它来决定收缩和展开效果collapsed: true,unique: true,persist: "location",url:"categoryFindAllServlet"});});}}/** * 像一个级别分类中中增加子类别 * @param {} data */function addChildCategory(data){var categoryOneLevelValue = window.prompt("请输入要添加的类别名称","");$.post("categoryChildAdd.action",{categoryOneLevelValue:categoryOneLevelValue,parentCategoryId:data.parentNode.id},function (data,textStatus){$("#navigation").empty();$("#navigation").treeview({animated: "fast",//由它来决定收缩和展开效果collapsed: true,unique: true,persist: "location",url:"categoryFindAllServlet"});});}package com.yangchenhui.action;import com.opensymphony.xwork2.Action;import com.opensymphony.xwork2.ActionSupport;import com.yangchenhui.model.Category;import com.yangchenhui.service.CategoryService;public class CategoryAddAction extends ActionSupport {private static final long serialVersionUID = 1L;private CategoryService categoryService;private String categoryOneLevelValue;@Overridepublic String execute() throws Exception {Category category = new Category();category.setCategoryName(categoryOneLevelValue);category.setDepth(1);if(!categoryService.queryCategoryByCategoryName(categoryOneLevelValue)){categoryService.addOneLevelCategory(category);}return Action.SUCCESS;}public CategoryService getCategoryService() {return categoryService;}public void setCategoryService(CategoryService categoryService) {this.categoryService = categoryService;}public String getCategoryOneLevelValue() {return categoryOneLevelValue;}public void setCategoryOneLevelValue(String categoryOneLevelValue) {this.categoryOneLevelValue = categoryOneLevelValue;}}package com.yangchenhui.action;import com.opensymphony.xwork2.Action;import com.opensymphony.xwork2.ActionSupport;import com.yangchenhui.model.Category;import com.yangchenhui.service.CategoryService;public class CategoryChildAdd extends ActionSupport {private static final long serialVersionUID = 1L;private CategoryService categoryService;private String categoryOneLevelValue;private Integer parentCategoryId;@Overridepublic String execute() throws Exception {Category childCategory = new Category();childCategory.setCategoryName(categoryOneLevelValue);if(!categoryService.queryCategoryByCategoryName(categoryOneLevelValue)){categoryService.addCategoryToParent(parentCategoryId, childCategory);}return Action.SUCCESS;}public CategoryService getCategoryService() {return categoryService;}public void setCategoryService(CategoryService categoryService) {this.categoryService = categoryService;}public String getCategoryOneLevelValue() {return categoryOneLevelValue;}public void setCategoryOneLevelValue(String categoryOneLevelValue) {this.categoryOneLevelValue = categoryOneLevelValue;}public Integer getParentCategoryId() { return parentCategoryId;}public void setParentCategoryId(Integer parentCategoryId) {this.parentCategoryId = parentCategoryId;}}package com.yangchenhui.action;import com.opensymphony.xwork2.Action;import com.opensymphony.xwork2.ActionSupport;import com.yangchenhui.service.CategoryService;public class CategoryDeleteAction extends ActionSupport {private static final long serialVersionUID = 1L;private CategoryService categoryService;private Integer categoryId;@Overridepublic String execute() throws Exception {this.categoryService.deleteCategory(categoryId);return Action.SUCCESS;}public CategoryService getCategoryService() {return categoryService;}public void setCategoryService(CategoryService categoryService) {this.categoryService = categoryService;}public Integer getCategoryId() {return categoryId;}public void setCategoryId(Integer categoryId) {this.categoryId = categoryId;}} package com.yangchenhui.action;import com.opensymphony.xwork2.Action;import com.opensymphony.xwork2.ActionSupport;import com.yangchenhui.model.Category;import com.yangchenhui.service.CategoryService;public class CategoryEditAction extends ActionSupport {private static final long serialVersionUID = 1L;private CategoryService categoryService;private String categoryOneLevelValue;private Integer categoryId;@Overridepublic String execute() throws Exception {Category category = categoryService.findCategoryById(categoryId);category.setCategoryName(categoryOneLevelValue);if(!categoryService.queryCategoryByCategoryName(categoryOneLevelValue)){categoryService.editCategory(category);}return Action.SUCCESS;}public CategoryService getCategoryService() {return categoryService;}public void setCategoryService(CategoryService categoryService) {this.categoryService = categoryService;}public Integer getCategoryId() {return categoryId;}public void setCategoryId(Integer categoryId) {this.categoryId = categoryId;}public String getCategoryOneLevelValue() {return categoryOneLevelValue;}public void setCategoryOneLevelValue(String categoryOneLevelValue) {this.categoryOneLevelValue = categoryOneLevelValue;}}
L: 编写CategoryService和CategoryServiceImpl
package com.yangchenhui.service;import java.util.List;import com.yangchenhui.model.Category;public interface CategoryService {/** * 得到所有的category * @return */public List<Category> queryAllCategory();/** * 得到所有的一级的父节点 * @return */public List<Category> queryOneLevelParentsCategory();/** * 根据父亲的id号得到父类别的所有的自类别 * @param parentId * @return */public List<Category> queryChildrenCategoryByParentId(Integer parentId);/** * 添加一级节点 */public void addOneLevelCategory(Category category);/** * 根据categoryId查找类别 * @param categoryId * @return */public Category findCategoryById(Integer categoryId);/** * 更新类别 * @param category */public void editCategory(Category category);/** * 删除一个类别，如果有任何的子类被，也将其删除 * @param categoryId */public void deleteCategory(Integer categoryId);/** * 向父类别parentCategory中添加一个自类别 * @param parentCategoryId * @param childCategory */public void addCategoryToParent(Integer parentCategoryId, Category childCategory);/** * 根据类别的名称去得到类别,查询是否有这个类别的名称 * @param categoryName */public boolean queryCategoryByCategoryName(String categoryName);/** * 查询一个category是否具有子节点 * @param categoryId * @return */public boolean hasChildren(Integer categoryId);}
[code ="java"]
package com.yangchenhui.service;
import java.util.List;
import com.yangchenhui.dao.CategoryDAO;
import com.yangchenhui.model.Category;
public class CategoryServiceImpl implements CategoryService {
private CategoryDAO categoryDAO;
@SuppressWarnings("unchecked")
@Override
public List<Category> queryAllCategory() {
return categoryDAO.findAll();
}
public CategoryDAO getCategoryDAO() {
return categoryDAO;
}
public void setCategoryDAO(CategoryDAO categoryDAO) {
this.categoryDAO = categoryDAO;
}
@SuppressWarnings("unchecked")
@Override
public List<Category> queryChildrenCategoryByParentId(Integer parentId) {
return this.categoryDAO.findByProperty("category", this.categoryDAO.findById(parentId));
}
@SuppressWarnings("unchecked")
@Override
public List<Category> queryOneLevelParentsCategory() {
return this.categoryDAO.findByProperty("depth", 1);
}
@Override
public void addOneLevelCategory(Category category) {
this.categoryDAO.save(category);
}
@Override
public Category findCategoryById(Integer categoryId) {
return this.categoryDAO.findById(categoryId);
}
@Override
public void editCategory(Category category) {
this.categoryDAO.attachDirty(category);
}
@Override
public void deleteCategory(Integer categoryId) {
this.categoryDAO.deleteCategoryByParentId(categoryId);
this.categoryDAO.delete(this.categoryDAO.findById(categoryId));
}
@Override
public void addCategoryToParent(Integer parentCategoryId,
Category childCategory) {
Category parentCategory = this.categoryDAO.findById(parentCategoryId);
childCategory.setDepth(parentCategory.getDepth()+1);
childCategory.setCategory(parentCategory);
this.categoryDAO.save(childCategory);
}
@Override
public boolean queryCategoryByCategoryName(String categoryName) {
List<Category> categories = this.categoryDAO.findByCategoryName(categoryName);
if(categories.size()==0){
return false;
}else{
return true;
}
}
@Override
public boolean hasChildren(Integer categoryId) {
List<Category> children = this.categoryDAO.findByProperty("category", this.categoryDAO.findById(categoryId));
if(children.size()==0){
return false;
}else{
return true;
}
}
}
<?xml version="1.0" encoding="UTF-8"?><beansxmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:p="http://www.springframework.org/schema/p"xmlns:aop="http://www.springframework.org/schema/aop"xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsdhttp://www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx-3.0.xsdhttp://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop-2.0.xsd"><bean id="sessionFactory"id="txAdvice"><tx:attributes><tx:method name="*" propagation="REQUIRED"/></tx:attributes></tx:advice><aop:config><aop:pointcut id="serviceMethods" expression="execution(* com.yangchenhui.service.*.*(..))"/><aop:advisor advice-ref="txAdvice" pointcut-ref="serviceMethods"/></aop:config><bean id="categoryService" ref="categoryDAO"/></bean><bean id="categoryFindAllAction" scope="prototype"><property name="categoryService" ref="categoryService"/></bean><bean id="categoryAddAction" scope="prototype"><property name="categoryService" ref="categoryService"/></bean><bean id="categoryEditAction" scope="prototype"><property name="categoryService" ref="categoryService"/></bean><bean id="categoryDeleteAction" scope="prototype"><property name="categoryService" ref="categoryService"/></bean><bean id="categoryChildAddAction" scope="prototype"><property name="categoryService" ref="categoryService"/></bean></beans>
