hibernate教程笔记5

web层(struts or jsp+servlet)
业务层domain service
数据持久层(hibernate)
数据库

内部留言板项目
开发步骤(struts+table(el)+hibernate)
1.根据需求，设计数据库，应该有两张表。

--users
create table users(id number primary key,name varchar2(64) unique,passwd varchar2(128) not null); -md5

--message
create table message
(id number primary key,
sender varchar2(64) not null,
receiver varchar2(64) not null,
content varchar2(4000) not null,
senTime date default sysdate,
attachment varchar2(128));

2.创建web项目
3.引入struts开发包
4.使用MyEclipse Database Explorer中的db browser连接数据库
5.引入hibernate开发包
6.对hibernate升级
7.创建需要的包com.sina.domain.* com.sina.servie.*

com.sina.util.*
8.通过hibernate逆向工程创建domain和对象映射文件

http://localhost:8080/messageborad/

struts-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd"><struts-config><data-sources /><form-beans ><form-bean name="usersForm" type="com.sina.struts.form.UsersForm" /><form-bean name="messageForm" type="com.sina.struts.form.MessageForm" /></form-beans><global-exceptions /><global-forwards ><forward name="ok" path="/WEB-INF/ok.jsp" /></global-forwards><action-mappings ><actionattribute="usersForm"input="/WEB-INF/login.jsp"name="usersForm"parameter="flag"path="/login"scope="request"type="com.sina.struts.action.LoginAction"validate="false" ><forward name="loginok" path="/WEB-INF/main.jsp" /><forward name="loginerr" path="/WEB-INF/login.jsp" /></action><actionattribute="messageForm"input="/WEB-INF/publish.jsp"name="messageForm"parameter="flag"path="/message"scope="request"type="com.sina.struts.action.MessageAction"validate="false"><forward name="goPublishUI" path="/WEB-INF/publish.jsp" /></action></action-mappings><message-resources parameter="com.sina.struts.ApplicationResources" />
</struts-config>

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><base href="<%=basePath%>"><title>My JSP 'login.jsp' starting page</title><meta http-equiv="pragma" content="no-cache"><meta http-equiv="cache-control" content="no-cache"><meta http-equiv="expires" content="0">    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"><meta http-equiv="description" content="This is my page"><!--<link rel="stylesheet" type="text/css" href="styles.css">--></head><body><h1>用户登录</h1><form action="/messageborad/login.do?flag=login" method="post">u:<input type="text" name="name"/><br/>p:<input type="password" name="passwd"/><br/><input type="submit" value="login"/></form></body>
</html>

main.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><base href="<%=basePath%>"><title>My JSP 'main.jsp' starting page</title><meta http-equiv="pragma" content="no-cache"><meta http-equiv="cache-control" content="no-cache"><meta http-equiv="expires" content="0">    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"><meta http-equiv="description" content="This is my page"><!--<link rel="stylesheet" type="text/css" href="styles.css">--></head><body><a href="/messageborad/message.do?flag=gotoPublish">发布信息</a>  <a href="##">退出信息</a><br/>留言信息:<br/><table border="1"><tr><td>发送人</td><td>时间</td><td>接收人</td><td>内容</td><td>附件</td></tr><tr><td>发送人</td><td>时间</td><td>接收人</td><td>内容</td><td>附件</td></tr><tr><td>发送人</td><td>时间</td><td>接收人</td><td>内容</td><td>附件</td></tr></table></body>
</html>

publish.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><base href="<%=basePath%>"><title>My JSP 'publish.jsp' starting page</title><meta http-equiv="pragma" content="no-cache"><meta http-equiv="cache-control" content="no-cache"><meta http-equiv="expires" content="0">    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"><meta http-equiv="description" content="This is my page"><!--<link rel="stylesheet" type="text/css" href="styles.css">--></head><body><h1>发布信息</h1><form action="??"><table></table></form></body>
</html>

hibernate.cfg.xml

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-configuration PUBLIC"-//Hibernate/Hibernate Configuration DTD 3.0//EN""http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"><!-- Generated by MyEclipse Hibernate Tools.              -->
<hibernate-configuration><session-factory><property name="connection.username">scott</property><property name="connection.url">jdbc:oracle:thin:@127.0.0.1:1521:orcl</property><property name="dialect">org.hibernate.dialect.Oracle9Dialect</property><property name="myeclipse.connection.profile">myoracle</property><property name="connection.password">tiger</property><property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property><mapping resource="com/sina/domain/Message.hbm.xml" /><mapping resource="com/sina/domain/Users.hbm.xml" /></session-factory></hibernate-configuration>

Message.java

package com.sina.domain;import java.util.Date;/*** Message generated by MyEclipse Persistence Tools*/public class Message implements java.io.Serializable {// Fieldsprivate Long id;private String sender;private String receiver;private String content;private Date sentime;private String attachment;// Constructors/** default constructor */public Message() {}/** minimal constructor */public Message(String sender, String receiver, String content) {this.sender = sender;this.receiver = receiver;this.content = content;}/** full constructor */public Message(String sender, String receiver, String content,Date sentime, String attachment) {this.sender = sender;this.receiver = receiver;this.content = content;this.sentime = sentime;this.attachment = attachment;}// Property accessorspublic Long getId() {return this.id;}public void setId(Long id) {this.id = id;}public String getSender() {return this.sender;}public void setSender(String sender) {this.sender = sender;}public String getReceiver() {return this.receiver;}public void setReceiver(String receiver) {this.receiver = receiver;}public String getContent() {return this.content;}public void setContent(String content) {this.content = content;}public Date getSentime() {return this.sentime;}public void setSentime(Date sentime) {this.sentime = sentime;}public String getAttachment() {return this.attachment;}public void setAttachment(String attachment) {this.attachment = attachment;}}

Users.java

package com.sina.domain;/*** Users generated by MyEclipse Persistence Tools*/public class Users implements java.io.Serializable {// Fieldsprivate Long id;private String name;private String passwd;// Constructors/** default constructor */public Users() {}/** minimal constructor */public Users(String passwd) {this.passwd = passwd;}/** full constructor */public Users(String name, String passwd) {this.name = name;this.passwd = passwd;}// Property accessorspublic Long getId() {return this.id;}public void setId(Long id) {this.id = id;}public String getName() {return this.name;}public void setName(String name) {this.name = name;}public String getPasswd() {return this.passwd;}public void setPasswd(String passwd) {this.passwd = passwd;}}Message.hbm.xml
```xml
<?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.sina.domain.Message" table="MESSAGE" schema="SCOTT"><id name="id" type="java.lang.Long"><column name="ID" precision="22" scale="0" /><generator class="sequence" /></id><property name="sender" type="java.lang.String"><column name="SENDER" length="64" not-null="true" /></property><property name="receiver" type="java.lang.String"><column name="RECEIVER" length="64" not-null="true" /></property><property name="content" type="java.lang.String"><column name="CONTENT" length="4000" not-null="true" /></property><property name="sentime" type="java.util.Date"><column name="SENTIME" length="7" /></property><property name="attachment" type="java.lang.String"><column name="ATTACHMENT" length="128" /></property></class>
</hibernate-mapping>

Users.hbm.xml

<?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.sina.domain.Users" table="USERS" schema="SCOTT"><id name="id" type="java.lang.Long"><column name="ID" precision="22" scale="0" /><generator class="sequence" /></id><property name="name" type="java.lang.String"><column name="NAME" length="64" unique="true" /></property><property name="passwd" type="java.lang.String"><column name="PASSWD" length="128" not-null="true" /></property></class>
</hibernate-mapping>

MessageService.java

package com.sina.service;
import com.sina.domain.Users;
import com.sina.util.*;
import java.util.*;
import org.hibernate.Session;
import org.hibernate.Transaction;
public class MessageService {}

UsersService.java

package com.sina.service;import java.util.List;import com.sina.domain.Users;
import com.sina.util.HibernateUtil;public class UsersService {//验证用户是否合法public Users checkUser(Users users){/** String sql... it doesn't need do this anymore,we use hibernateSession session=null;Transaction ts=null;try {session=HibernateUtil.getCurrentSession();ts=session.beginTransaction();List<Users> list=session.createQuery("from User where name='"+users.getName()+"' and passwd='"+users.getPasswd()+"'").list();if(list.size()==1){users=list.get(0);}else{users=null;}ts.commit();} catch (Exception e) {// TODO: handle exceptionif(ts!=null){ts.rollback();}throw new RuntimeException("ERROR 404");}finally{if(session.isOpen() && session!=null){session.close();}}return users;*/String hql="from Users where name='"+users.getName()+"' and passwd='"+users.getPasswd()+"'";List<Users> list=HibernateUtil.executeQuery(hql);if(list.size()==1){return list.get(0);}else{return null;}}
}

LoginAction.java

/** Generated by MyEclipse Struts* Template path: templates/java/JavaClass.vtl*/
package com.sina.struts.action;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.DispatchAction;
import com.sina.struts.form.UsersForm;
import com.sina.domain.Users;
import com.sina.service.UsersService;/** * MyEclipse Struts* Creation date: 02-19-2020* * XDoclet definition:* @struts.action path="/login" name="usersForm" parameter="flag" scope="request"*/
public class LoginAction extends DispatchAction {/** Generated Methods*//** * Method execute* @param mapping* @param form* @param request* @param response* @return ActionForward*/public ActionForward login(ActionMapping mapping, ActionForm form,HttpServletRequest request, HttpServletResponse response) {UsersForm usersForm = (UsersForm) form;// TODO Auto-generated method stub//这里需要调用service完成验证//根据用户输入创建users对象Users user=new Users();user.setName(usersForm.getName());user.setPasswd(usersForm.getPasswd());//创建serviceUsersService usersService=new UsersService();user=usersService.checkUser(user);if(user!=null){request.getSession().setAttribute("userInfo", user);return mapping.findForward("loginok");}else{return mapping.findForward("loginerr");}/*简单判断连通没有* *if(usersForm.getName().equals("aaa")){return mapping.findForward("loginok");}else{return mapping.findForward("loginerr");}*/}
}

MessageAction.java

/** Generated by MyEclipse Struts* Template path: templates/java/JavaClass.vtl*/
package com.sina.struts.action;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import com.sina.struts.form.MessageForm;/** * MyEclipse Struts* Creation date: 02-19-2020* * XDoclet definition:* @struts.action path="/message" name="messageForm" parameter="flag" scope="request"*/
public class MessageAction extends Action {/** Generated Methods*//** * Method execute* @param mapping* @param form* @param request* @param response* @return ActionForward*/public ActionForward gotoPublish(ActionMapping mapping, ActionForm form,HttpServletRequest request, HttpServletResponse response) {//MessageForm messageForm = (MessageForm) form;// TODO Auto-generated method stubreturn mapping.findForward("goPublishUI"); }
}

MessageForm.java

/** Generated by MyEclipse Struts* Template path: templates/java/JavaClass.vtl*/
package com.sina.struts.form;import org.apache.struts.action.ActionForm;/** * MyEclipse Struts* Creation date: 02-19-2020* * XDoclet definition:* @struts.form name="messageForm"*/
public class MessageForm extends ActionForm {}

UsersForm.java

/** Generated by MyEclipse Struts* Template path: templates/java/JavaClass.vtl*/
package com.sina.struts.form;import org.apache.struts.action.ActionForm;/** * MyEclipse Struts* Creation date: 02-19-2020* * XDoclet definition:* @struts.form name="usersForm"*/
public class UsersForm extends ActionForm {private String name;private String passwd;public String getName() {return name;}public void setName(String name) {this.name = name;}public String getPasswd() {return passwd;}public void setPasswd(String passwd) {this.passwd = passwd;}
}

HibernateUtil.java

package com.sina.util;
import java.util.List;import com.sina.domain.Users;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;import com.sina.domain.Users;
final public class HibernateUtil {private static SessionFactory sessionFactory=null;//使用线程局部模式private static ThreadLocal<Session> threadLocal=new ThreadLocal<Session>();private HibernateUtil(){};static {sessionFactory=new Configuration().configure().buildSessionFactory();}//获取全新的全新的sesessionpublic static Session openSession(){return sessionFactory.openSession();}//获取和线程关联的sessionpublic static Session getCurrentSession(){Session session=threadLocal.get();//判断是否得到if(session==null){session=sessionFactory.openSession();//把session对象设置到 threadLocal,相当于该session已经和线程绑定threadLocal.set(session);}return session;}//统一的一个修改和删除(批量 hql) hql"delete upate ...??"public static void executeUpdate(String hql,String [] parameters){Session s=null;Transaction tx=null;try {s=openSession();tx=s.beginTransaction();Query query=s.createQuery(hql);//先判断是否有参数要绑定if(parameters!=null&& parameters.length>0){for(int i=0;i<parameters.length;i++){query.setString(i, parameters[i]);}}query.executeUpdate();tx.commit();} catch (Exception e) {e.printStackTrace();throw new RuntimeException(e.getMessage());// TODO: handle exception}finally{if(s!=null&&s.isOpen()){s.close();}}}//统一的添加的方法public  static void save(Object obj){Session s=null;Transaction tx=null;try {s=openSession();tx=s.beginTransaction();s.save(obj);tx.commit();} catch (Exception e) {if(tx!=null){tx.rollback();}throw new RuntimeException(e.getMessage());// TODO: handle exception}finally{if(s!=null && s.isOpen()){s.close();}}}//提供一个统一的查询方法(带分页) hql 形式 from 类 where 条件=? ..public static List executeQueryByPage(String hql,String [] parameters,int pageSize,int pageNow){Session s=null;List list=null;try {s=openSession();Query query=s.createQuery(hql);//先判断是否有参数要绑定if(parameters!=null&& parameters.length>0){for(int i=0;i<parameters.length;i++){query.setString(i, parameters[i]);}}query.setFirstResult((pageNow-1)*pageSize).setMaxResults(pageSize);list=query.list();} catch (Exception e) {e.printStackTrace();throw new RuntimeException(e.getMessage());// TODO: handle exception}finally{if(s!=null&&s.isOpen()){s.close();}}return list;}/*提供一个统一的查询方法 hql 形式 from 类  where 条件=? ..public static List executeQuery(String hql,String [] parameters){Session s=null;List list=null;try {s=openSession();Query query=s.createQuery(hql);//先判断是否有参数要绑定if(parameters!=null&& parameters.length>0){for(int i=0;i<parameters.length;i++){query.setString(i, parameters[i]);}}list=query.list();} catch (Exception e) {e.printStackTrace();throw new RuntimeException(e.getMessage());// TODO: handle exception}finally{if(s!=null&&s.isOpen()){s.close();}}return list;}*///提供一个统一的查询方法public static List executeQuery(String hql){//String sql... it doesn't need do this anymore,we use hibernateSession session=null;Transaction ts=null;List list=null;try {session=HibernateUtil.getCurrentSession();ts=session.beginTransaction();list=session.createQuery(hql).list();ts.commit();} catch (Exception e) {// TODO: handle exceptionif(ts!=null){ts.rollback();}throw new RuntimeException("错误");}finally{if(session.isOpen() && session!=null){session.close();}}return list;}}

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