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源程序下?/a>
至于Hibernate, Structs, MySQL的具体用法我׃说了,你可以看源程序来查看详细内容.我们来看看分应用的相关内容.
架构上和Spring JPetStore没多区? 只是没用Spring框架所以Structs中的UserdisplayAction中必new出各个对象ƈ完成它们之间的关? q就是Spring IOC可自动完成的功能. 它也是三?表现?Structs), 业务?POJO), 数据?Hibernate讉KMySQL). 同样业务层通过DAO接口(UserDAO)来访问数据库, 讉K数据库的通过Hibernate(在UserDAOImpl中实?. q一ơ分要在业务层中来实现, 业务层同样向表现层提供一个Facada(门面, UserManager接口), 来访问业? 在UserManagerImpl中通过调用UserDAO来访问数? 调用POJO来实现分功? 看以下关键代?
先看POJO的分布类?
Page.java
package org.flyware.util.page;
public class Page {
private boolean hasPrePage;
private boolean hasNextPage;
private int everyPage;
private int totalPage;
private int currentPage;
private int beginIndex;
public Page(){
}
public Page(int everyPage){
this.everyPage = everyPage;
}
/** The whole constructor */
public Page(boolean hasPrePage, boolean hasNextPage,
int everyPage, int totalPage,
int currentPage, int beginIndex) {
this.hasPrePage = hasPrePage;
this.hasNextPage = hasNextPage;
this.everyPage = everyPage;
this.totalPage = totalPage;
this.currentPage = currentPage;
this.beginIndex = beginIndex;
}
......
public int getTotalPage() {
return totalPage;
}
public void setTotalPage(int totalPage) {
this.totalPage = totalPage;
}
}
PageUtil.java(用来构造Page实例 相当于page工厂)
package org.flyware.util.page;
public class PageUtil {
private static final Log logger = LogFactory.getLog(PageUtil.class);
public static Page createPage(Page page, int totalRecords){
return createPage(page.getEveryPage(), page.getCurrentPage(), totalRecords);
}
public static Page createPage(int everyPage, int currentPage, int totalRecords){
everyPage = getEveryPage(everyPage);
currentPage = getCurrentPage(currentPage);
int beginIndex = getBeginIndex(everyPage, currentPage);
int totalPage = getTotalPage(everyPage, totalRecords);
boolean hasNextPage = hasNextPage(currentPage, totalPage);
boolean hasPrePage = hasPrePage(currentPage);
return new Page(hasPrePage, hasNextPage,
everyPage, totalPage,
currentPage, beginIndex);
}
private static int getEveryPage(int everyPage){
return everyPage == 0 ? 10 : everyPage;
}
private static int getCurrentPage(int currentPage){
return currentPage == 0 ? 1 : currentPage;
}
private static int getBeginIndex(int everyPage, int currentPage){
return (currentPage - 1) * everyPage;
}
private static int getTotalPage(int everyPage, int totalRecords){
int totalPage = 0;
if(totalRecords % everyPage == 0)
totalPage = totalRecords / everyPage;
else
totalPage = totalRecords / everyPage + 1 ;
return totalPage;
}
private static boolean hasPrePage(int currentPage){
return currentPage == 1 ? false : true;
}
private static boolean hasNextPage(int currentPage, int totalPage){
return currentPage == totalPage || totalPage == 0 ? false : true;
}
}
业务实现c?UserManaerImpl.java
package com.linan.service.impl;
public class UserManagerImpl implements UserManager {
private UserDAO userDAO;
public void setUserDAO(UserDAO userDAO) {
this.userDAO = userDAO;
}
//提供业务Ҏ
public Result listUser(Page page) throws HibernateException,
ObjectNotFoundException {
int totalRecords = userDAO.getUserCount();
if(totalRecords == 0)
throw new ObjectNotFoundException("userNotExist", null);
page = PageUtil.createPage(page, totalRecords);
List users = userDAO.getUserByPage(page);
return new Result(page, users);
}
}
DAO数据讉K实现c?UserDAOImpl.java
package com.linan.dao.impl;
public class UserDAOImpl implements UserDAO {
...........
public List getUserByPage(Page page) throws HibernateException {
String querySentence = "FROM user in class com.linan.bo.Userlist";
Query query = getSession().createQuery(querySentence);
//实现分页功能
query.setFirstResult(page.getBeginIndex())
.setMaxResults(page.getEveryPage());
return query.list();
}
}
表现层Structs中的Action UserdisplayAction.java
package com.linan.struts.action;
public class UserdisplayAction extends Action {
public ActionForward execute(
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response) {
Page page=new Page();
UserManagerImpl userManager=new UserManagerImpl();
UserDAOImpl userDAO=new UserDAOImpl();
userManager.setUserDAO(userDAO);
//掉用业务代理完成分页
Result result=userManager.listUser(page);
List list=result.getContent();
HttpSession session=request.getSession();
session.setAttribute("list",list);
return mapping.findForward("displayGo");
}
}
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Sunlight NetStore源码下蝲
下蝲的源E序是Eclipse下完成的工程源程?可以在Eclipse下只接导入进来打开完成发布. 也可以在tomcat安装目录\webapps目录下新Z文g夹jpetstore然后把下载下来的WebRoot目录下的所有内定w拯? 数据库的建立, 我开发时使用的是mysql4.0(如果你用的是mysql5.0则可能有时会出错, 5.0是它的测试版我用了感觉有时会出现莫明其妙的错?q以为是E序错误, 费了我好多时? ?.0是它的发布版很稳定的). 使用mysql你可以配合用MySQL Control Center(mysql4.0, MySQL Control Center可以|上下蝲Google一下吧q里׃提供下蝲地址?很好用的和微软的SQL Server差不? 在MySQL Control Center中执行数据库脚本, 然后启动tomcat服务? 你将看到如下: (开发用的技术是Structs里面的东? ׃说了. 架构, 业务层和数据层和原来的不? 想了解请看Spring JPetStore(? Spring JPetStore的分?/a>)
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我像一只灰子鸟, 我想飞翔, 永远都不要停. 我一个h在天IZ漫无目的的飞? 不知飞了多远, 也不知还能飞多远. 只是记得自已q在飞着, 一直飞着...... 有一天我遇到了一南ȝ大雁, 它们告诉? 跟我们一赯吧小灰子? 前面很冷你会被冻ȝ, 跟我们一起到南方d, 那里有O漫的pq有充的食? 谢谢你们的好意大雁阿? 我是灰子? 在我的天I没有停留和目的, 我只有往前飞那是我的使命.灰子鸟告别了雁群l箋往前飞? 天空来暗, I气中充满着寒流, 灰子鸟感C大难卛_来.....
灰子鸟很? 很冷. 它连睁开双眼都觉得那么用? 它好像睡一觉啊! 呼呼的风声告诉他, 他还在飞? 它还要飞? q是它会L? 灰子鸟还是一直飞, 因ؓ那是它的使命, 它没有选择, 因ؓ它没有脚, 生命中注定了飞翔..
灰子鸟还要飞? 对他惛_q方, 他想d扑֮的天I? 在那里是它们的天? 那里有宽阔的草场, 健康的牛?.. 可是灰子鸟的膀太小? 属于他的天空太小, 即它用全力也飞不C...... 它流泪了!
或许我就是这只灰子鸟, 即用尽全力你还是离我那么远, 很抱歉我飞不C的n边了, 或许没有我你的天IZ更美...... 很抱歉我的翅膀太小, 你的天空应该属于别h......
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源码下蝲(http://www.wrox.com/WileyCDA/WroxTitle/productCd-0764558315,descCd-download_code.html)
好了有了源码让我们先来一睹ؓ快然后再来分?
要构建Spring Jpetstore 应用你还需要安装JDK 和Tomcat详情L我的JSP开发入门用L陆认?/a> 此外Z用ANT构徏应用q要安装讄ANT工具(下蝲地址:http://www.jakarta.apache.org) ANT的安装Y件是解压软g?只需把压~文件解压到本地盘. q设|一下环境变?ANT_HOME=ANT的安装目?PATH=%PATH%;%ANT_HOME%\bin; CLASSPATH=%CLASSPATH%;%ANT_HOME%\lib;
好了环境搭徏完闭, 现在q入 ..\spring-jpetstore\samples\jpetstore>
执行ANT命o ..\spring-jpetstore\samples\jpetstore>ant
则将?..\spring-jpetstore\samples\jpetstore\dist目录下生成jpetstore.war的发布文? 现在大功告成把jpetstore.war文g拷到tomcat安装目录\webapps\? 启动tomcat服务?tomcat安装目录\bin\star_up.bat). 启动hsql数据?..\spring-jpetstore\samples\jpetstore\db\hsqldb\server.bat). 好了一切搞定现在打开览器输?http://localhost:8080/jpetstore)你将可看到如?
借助?..\spring-jpetstore\samples\jpetstore\db\hsqldb\manager.bat)看到的hsql数据库中的数?br />
发布搞定下面对它做一些简要的分析!
LSpring JPetStore(? JPetStore的分?/a>
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