Struts+Hibernate模板开发笔记（转)

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本文详述了使用 Struts+Hibernate开发模板的全过程，本文共有以下内容：

一、建立数据库联结池

二、建立测试数据库

三、建立Hibernate配置

四、把数据库的表映射为类

五、模板中的包定义

六、设计模式:单例

七、设计模式:门面

八、设计模式:DAO

九、设计模式:MVC

十、自定义标签

十一、解决汉字编码问题

1.把数据库驱动程序拷入Tomcat5.0的common/lib目录下.

如:oracle9i拷贝ojdbc14.jar

2.修改TOMCAT配置文件conf/server.xml.在</host>之前加入如下代码:

<Context path="/demo" docBase="F:/j_work/working/demo/demo" debug="5" reloadable="true" crossContext="true"> <Logger className="org.apache.catalina.logger.FileLogger" prefix="localhost_DBTest_log." suffix=".txt" timestamp="true"/> <Resource name="jdbc/demo" auth="Container" type="javax.sql.DataSource"/> <ResourceParams name="jdbc/demo"> <parameter> <name>factory</name> <value>org.apache.commons.dbcp.BasicDataSourceFactory</value> </parameter> <parameter> <name>driverClassName</name> <value>oracle.jdbc.driver.OracleDriver</value> </parameter> <parameter> <name>url</name> <value>jdbc:oracle:thin:@192.168.3.200:1521:demo</value> </parameter> <parameter> <name>username</name> <value>demo</value> </parameter> <parameter> <name>password</name> <value>demo</value> </parameter> <parameter> <name>maxActive</name> <value>20</value> </parameter> <parameter> <name>maxIdle</name> <value>10</value> </parameter> <parameter> <name>maxWait</name> <value>-1</value> </parameter> </ResourceParams> </Context>

1.建立数据库用户名 demo 密码 demo 
2.建立测试表 
建立测试表 demo 
字段说明 id char(100) 　　　　　主键 name varchar2(50) 　　 名字 image_id number(10) 　 图片id system_date date　 　　系统日期 user_date date　　　　 录入日期 
建立图片索引表 image 
字段说明 id char(100) 　　　　　　　　　　　主键 title varchar2(50) 　　　　　　　　图片标题 message varchar2(2000) 　　　　　　图片信息 original_image_path varchar(200)　 原始图片保存路径 small _image_path varchar(200)　　 小图片保存路径 image_id number(10) 　 　　　　　　图片id system_date date　 　　 　　　　　 系统日期 
id索引表 Singleton_Id 
字段说明 id char(100) 　 　　主键 name varchar2(50) 　索引名(需要为此字段建索引) value number(10) 　 索引id
1.拷贝Oracle9i数据库驱动程序ojdbc14.jar到JBUILDER9安装目录的LIB目录下.用JBUILDER9.0建立PROJECT工程. 
2.把如下hibernate-2.0.3必须的库文件包含在工程中. 
hibernate2.jar commons-beanutils.jar commons-collections.jar commons-dbcp.jar commons-lang.jar commons-logging.jar commons-pool.jar dom4j.jar cglib-asm.jar connector.jar 
3.建立 hibernate.cfg.xml文件,并拷到SRC目录 
<?xml version='1.0' encoding='utf-8'?> <!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD//EN" "http://hibernate.sourceforge.net/hibernate-configuration-2.0.dtd"> <hibernate-configuration> <session-factory> <property name="connection.datasource">java:comp/env/jdbc/demo</property> <property name="show_sql">true</property> <property name="use_outer_join">true</property> <property name="dialect">net.sf.hibernate.dialect.Oracle9Dialect</property> <!-- Mapping files --> <!--mapping resource="com/kmtava/qtmis/jdo/TCzy.hbm.xml"/--> </session-factory> </hibernate-configuration>
下载 hibernate-extensions 压缩包. 修改 setenv.bat文件中的环境变量.主要修改Hibernate的目录和数据库驱动程序文件名.
例如:
@echo off rem -------------------------------------------------------------------rem Setup environment for hibernate toolsrem -------------------------------------------------------------------set JDBC_DRIVER=../../../lib/ojdbc14.jarset HIBERNATE_HOME=../../../hibernate-2.0.3set CORELIB=%HIBERNATE_HOME%/libset LIB=../libset PROPS=%HIBERNATE_HOME%/srcset CP=%JDBC_DRIVER%;%PROPS%;%HIBERNATE_HOME%/hibernate2.jar;%CORELIB%/commons-logging.jar;%CORELIB%/commons-collections.jar;%CORELIB%/commons-lang.jar;%CORELIB%/cglib.jar;%CORELIB%/dom4j.jar;%CORELIB%/odmg.jar;%CORELIB%/xml-apis.jar;%CORELIB%/xerces.jar;%CORELIB%/xalan.jar;%LIB%/jdom.jar;%LIB%/../hibernate-tools.jar
运行ddl2hbm.bat, 设置参数如下:
[ CONNECTION ] DRIVER CLASS : oracle.jdbc.driver.OracleDriver 　　　　　　　　(org.gjt.mm.mysql.Driver)CONNECTION URL: jdbc:oracle:thin:@192.168.3.200:1521:demo 　 　(jdbc:mysql://localhost/authority)USER: demoPASSWORD: demo[ MAPPING ]KEY FIELD : idSCHEMAEXPORT : uuid.hex[ CODE ]PACKAGE NAME: com.company.demo.jdo[ OUTPUT ]F:/j_work/working/demo/src 
其它的用默认值，点[TABLES]的tables..选择表，程序生成类和xml
生成的文件如下：
(1)image.java
package com.company.demo.jdo; import java.io.Serializable;import java.util.Date;import org.apache.commons.lang.builder.EqualsBuilder;import org.apache.commons.lang.builder.HashCodeBuilder;import org.apache.commons.lang.builder.ToStringBuilder;/** @author Hibernate CodeGenerator */public class Image implements Serializable {/** identifier field */private String id;/** nullable persistent field */private String title;/** nullable persistent field */private String message;/** nullable persistent field */private String originalImagePath;/** nullable persistent field */private String smallImagePath;/** nullable persistent field */private long imageId;/** nullable persistent field */private Date systemDate;/** full constructor */public Image(String title, String message, String originalImagePath, String smallImagePath, long imageId, Date systemDate) {this.title = title;this.message = message;this.originalImagePath = originalImagePath;this.smallImagePath = smallImagePath;this.imageId = imageId;this.systemDate = systemDate;}/** default constructor */public Image() {}public String getId() {return this.id;}public void setId(String id) {this.id = id;}public String getTitle() {return this.title;}public void setTitle(String title) {this.title = title;}public String getMessage() {return this.message;}public void setMessage(String message) {this.message = message;}public String getOriginalImagePath() {return this.originalImagePath;}public void setOriginalImagePath(String originalImagePath) {this.originalImagePath = originalImagePath;}public String getSmallImagePath() {return this.smallImagePath;}public void setSmallImagePath(String smallImagePath) {this.smallImagePath = smallImagePath;}public long getImageId() {return this.imageId;}public void setImageId(long imageId) {this.imageId = imageId;}public Date getSystemDate() {return this.systemDate;}public void setSystemDate(Date systemDate) {this.systemDate = systemDate;}public String toString() {return new ToStringBuilder(this).append("id", getId()).toString();}public boolean equals(Object other) {if ( !(other instanceof Image) ) return false;Image castOther = (Image) other;return new EqualsBuilder().append(this.getId(), castOther.getId()).isEquals();}public int hashCode() {return new HashCodeBuilder().append(getId()).toHashCode();}}
(2)Image.hbm.xml
<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 2.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd"><hibernate-mapping><class name="com.company.demo.jdo.Image" schema="DEMO" table="IMAGE"><id column="ID" name="id" type="string"><generator class="uuid.hex"/></id><property column="TITLE" length="50" name="title" type="string"/><property column="MESSAGE" length="2000" name="message" type="string"/><property column="ORIGINAL_IMAGE_PATH" length="200" name="originalImagePath" type="string"/><property column="SMALL_IMAGE_PATH" length="200" name="smallImagePath" type="string"/><property column="IMAGE_ID" length="10" name="imageId" type="long"/><property column="SYSTEM_DATE" length="7" name="systemDate" type="timestamp"/></class></hibernate-mapping>
其它生成的文件略！
 
com.company.demo.dataModule 　　数据模型com.company.demo.dao 　　　 　　DAO模型com.company.demo.exception 　　 异常com.company.demo.jdo　　　　　　hibernate类映射　　com.company.demo.start 　　　　 启动JSP服务时加载的类com.company.demo.tags 　　　　　自定义标签类com.company.demo.thread 　　　　线程类com.company.demo.util 　　　　　工具类com.company.demo.web　　　　　　Struts类com.company.demo.facade 　　　　Facade调用的类
 
 
 
1.数据模型
接口(Datamodule.java)
package com.company.demo.datamodule; package com.company.demo.datamodule;import net.sf.hibernate.Session;import net.sf.hibernate.Transaction;import net.sf.hibernate.HibernateException;import net.sf.hibernate.SessionFactory;import net.sf.hibernate.cfg.Configuration;/*** <p>Title: Struts+Hibernate开发模板</p>* <p>Description: 通用开发模板</p>* <p>Copyright: Copyright (c) 2003</p>* <p>Company: 优势科技</p>* @author 段洪杰* @version 1.0*/public interface DataModule {public SessionFactory getSessionFactory();}
数据模型 (DatamoduleImpl.java)
package com.company.demo.datamodule;/*** <p>Title: Struts+Hibernate开发模板</p>* <p>Description: 通用开发模板</p>* <p>Copyright: Copyright (c) 2003</p>* <p>Company: 优势科技</p>* @author 段洪杰* @version 1.0*/import net.sf.hibernate.Session;import net.sf.hibernate.Transaction;import net.sf.hibernate.HibernateException;import net.sf.hibernate.SessionFactory;import net.sf.hibernate.cfg.Configuration;/*** 建立 SessionFactory*/public class DataModuleImpl implements DataModule {private SessionFactory sessionFactory;public DataModuleImpl() throws HibernateException {sessionFactory=new Configuration().configure().buildSessionFactory();}/*** 从dataModule中取得 SessionFactory*/public SessionFactory getSessionFactory(){return this.sessionFactory;}}
2.产生唯一ID的父类
接口 (SingletonIdDAO.java)
package com.company.demo.dao; /*** <p>Title: Struts+Hibernate开发模板</p>* <p>Description: 通用开发模板</p>* <p>Copyright: Copyright (c) 2003</p>* <p>Company: 优势科技</p>* @author 段洪杰* @version 1.0*/public interface SingletonIdDAO {}
ID父类 (SingletonIdDAOImpl.java) 
package com.company.demo.dao;import java.util.List;import com.company.demo.datamodule.*;import com.company.demo.jdo.SingletonId;import net.sf.hibernate.SessionFactory;import net.sf.hibernate.HibernateException;import net.sf.hibernate.Session;import net.sf.hibernate.Transaction;import net.sf.hibernate.Query;/*** 产生唯一的ID** 数据库结构(ORACLE9i):* 表名 SINGLETON_ID* 字段 id(char) name varchar2(50) value number(10.0)*** <p>Title: Struts+Hibernate开发模板</p>* <p>Description: 通用开发模板</p>* <p>Copyright: Copyright (c) 2003</p>* <p>Company: 优势科技</p>* @author 段洪杰* @version 1.0***/public class SingletonIdDAOImpl implements SingletonIdDAO{private SessionFactory sessionFactory;private DataModule dataModule;/*** 设数据模型*/public void setDataModule(DataModule dataModule){this.dataModule=dataModule;this.sessionFactory=dataModule.getSessionFactory();}////////////////以下是业务逻辑////////////////////private SingletonId findByName(String name) throws HibernateException,Exception {Transaction transaction = null;SingletonId singletonId=new SingletonId();Session session=sessionFactory.openSession();String queryString = "select g from SingletonId as g where g.name = :name order by g.value desc";try{transaction = session.beginTransaction();Query query = session.createQuery(queryString);query.setString("name",name);// q.setFirstResult(20000);//q.setMaxResults(100);query.setMaxResults(1);List list=query.list();singletonId=(SingletonId)list.get(0);transaction.commit();}catch(Exception ex){if ( transaction!=null ){transaction.rollback();}//throw ex;}finally{session.close();}return singletonId;}/** 取得value* @param name 产唯一ID的类型名称* @return value* @throws HibernateException*/protected long getValue(String name) throws HibernateException,Exception {SingletonId singletonId=findByName(name);return singletonId.getValue();}/** 设置value* @param name 产唯一ID的类型名称* @throws HibernateException*/protected void setValue(String name) throws HibernateException,Exception {Session session=sessionFactory.openSession();SingletonId singletonId=findByName(name);singletonId.setName(name);singletonId.setValue(singletonId.getValue()+1);Transaction transaction = null;try{transaction = session.beginTransaction();session.saveOrUpdate(singletonId);transaction.commit();}catch(HibernateException he){if ( transaction!=null ){transaction.rollback();}throw he;}finally{session.close();}}}
 
3.单例图片ID类(ImageSingletonId.java)
package com.company.demo.dao.count; import net.sf.hibernate.HibernateException;import com.company.demo.dao.SingletonIdDAOImpl;import com.company.demo.datamodule.DataModule;/*** <p>Title: Struts+Hibernate开发模板</p>* <p>Description: 通用开发模板</p>* <p>Copyright: Copyright (c) 2003</p>* <p>Company: 优势科技</p>* @author 段洪杰* @version 1.0*/public class ImageSingletonId extends SingletonIdDAOImpl{private static ImageSingletonId imageSingletonId = null;/*** 构造函数私有*/private ImageSingletonId(){}/*** 静态工厂模式,取得ImageSingletonId实例*/public static synchronized ImageSingletonId getInstance() {if (imageSingletonId==null){imageSingletonId=new ImageSingletonId();}return imageSingletonId;}/*** 取图形唯一ID*/public synchronized long getImageValue() throws HibernateException,Exception {long value;setValue("image");value=getValue("image");return value;}}
4.图片ID测试文件(TestImageSingletonId.jsp)
<%@ page contentType="text/html; charset=gb2312" %><%@ page import="net.sf.hibernate.*" %><%@ page import="net.sf.hibernate.cfg.*" %><%@ page import="com.company.demo.datamodule.*" %><%@ page import="com.company.demo.dao.count.*" %><%!DataModule dataModule;ImageSingletonId imageSingletonId;%><%try{imageSingletonId=ImageSingletonId.getInstance();imageSingletonId.setDataModule(new DataModuleImpl());}catch(Exception ex){ex.toString();} for(int i=0;i<100;i++){out.print("测试..........<BR>");out.print(imageSingletonId.getImageValue());out.print("----------------<BR>");}%>
5.单例记数器ID类(MainPageSingletonId.java)
package com.company.demo.dao.count; import net.sf.hibernate.HibernateException;import com.company.demo.dao.SingletonIdDAOImpl;import com.company.demo.datamodule.DataModule;/*** <p>Title: Struts+Hibernate开发模板</p>* <p>Description: 通用开发模板</p>* <p>Copyright: Copyright (c) 2003</p>* <p>Company: 优势科技</p>* @author 段洪杰* @version 1.0*/public class MainPageSingletonId extends SingletonIdDAOImpl{private static MainPageSingletonId mainPageSingletonId = null;/*** 构造函数私有*/private MainPageSingletonId(){}/*** 静态工厂模式,取得MainPageSingletonId实例*/public static synchronized MainPageSingletonId getInstance() {if (mainPageSingletonId==null){mainPageSingletonId=new MainPageSingletonId();}return mainPageSingletonId;}/*** 取唯一ID*/public synchronized long getMainPageValue() throws HibernateException,Exception {long value;setValue("mainPage");value=getValue("mainPage");return value;}}
6.记数ID测试文件(TestMainPageSingletonId.jsp)
<%@ page contentType="text/html; charset=gb2312" %><%@ page import="net.sf.hibernate.*" %><%@ page import="net.sf.hibernate.cfg.*" %><%@ page import="com.company.demo.datamodule.*" %><%@ page import="com.company.demo.dao.count.MainPageSingletonId" %><%!DataModule dataModule;MainPageSingletonId mainPageSingletonId;%><%try{mainPageSingletonId=MainPageSingletonId.getInstance();mainPageSingletonId.setDataModule(new DataModuleImpl());}catch(Exception ex){ex.toString();} for(int i=0;i<100;i++){out.print("测试..........<BR>");out.print(mainPageSingletonId.getMainPageValue());out.print("----------------<BR>");}%>
7.综合单例测试(略)
 
1.在JSP中调"Session Facade"类
在JSP文件中插入下列标签:
<jsp:useBean id="sessionBean" scope="session" class="com.company.demo.web.SessionBean" />
2.SessionBean类
 package com.company.demo.web;import com.company.demo.datamodule.*;import com.company.demo.thread.*;import com.company.demo.facade.*;/** * <p>Title: Struts+Hibernate开发模板</p> * <p>Description: 通用开发模板</p> * <p>Copyright: Copyright (c) 2003</p> * <p>Company: 优势科技</p> * @author 段洪杰 * @version 1.0 */public class SessionBean {  private DataModule dataModule;//数据模型  private Auth auth;  //登录的用户信息  private Business business; //系统中的业务逻辑主线  private Line line; //保存模块中的关联状态  /**   * 构函数,初始化业务逻辑中的类(单例)   */  public SessionBean(){  try {      dataModule=SessionBeanSingletonFactory.getDataModule();      auth=SessionBeanSingletonFactory.getAuth();      business=SessionBeanSingletonFactory.getBusiness();      line=SessionBeanSingletonFactory.getLine();  }  catch (Exception ex) {     ex.printStackTrace();   } } /**  * 门面模式调用的公共应用模块  * @return Utility  */public Utility getUtility()  {   return SessionBeanFactory.getUtility(); }}
3.SessionBeanFactory类
package com.company.demo.web; import com.company.demo.datamodule.*;import com.company.demo.thread.*;import com.company.demo.facade.*;import net.sf.hibernate.HibernateException;/*** SessionBean门面模式的抽象工厂类* <p>Title: Struts+Hibernate开发模板</p>* <p>Description: 通用开发模板</p>* <p>Copyright: Copyright (c) 2003</p>* <p>Company: 优势科技</p>* @author 段洪杰* @version 1.0*/public class SessionBeanFactory {/*** 生成业务逻辑状态实例(facade)* @return LineImpl* @throws HibernateException*/private SessionBeanFactory(){}public final static Utility getUtility(){return new UtilityImpl();}}
4.SessionBeanSingletonFactory类
package com.company.demo.web; import com.company.demo.datamodule.*;import com.company.demo.thread.*;import com.company.demo.facade.*;import net.sf.hibernate.HibernateException;/*** <p>Title: Struts+Hibernate开发模板</p>* <p>Description: 通用开发模板</p>* <p>Copyright: Copyright (c) 2003</p>* <p>Company: 优势科技</p>* @author 段洪杰* @version 1.0*/public class SessionBeanSingletonFactory {/*** 生成用户认证实例(单例)* @return AuthImpl* @throws HibernateException*/private SessionBeanSingletonFactory(){}public final static Auth getAuth() throws HibernateException{return new AuthImpl();}/*** 生成商务逻辑实例(单例)* @return BusinessImpl* @throws HibernateException*/public final static Business getBusiness() throws HibernateException{return new BusinessImpl();}/*** 生成数据模型实例(单例)* @return DataModuleImpl* @throws HibernateException*/public final static DataModule getDataModule() throws HibernateException{return new DataModuleImpl();}/*** 生成业务逻辑状态实例(单例)* @return LineImpl* @throws HibernateException*/public final static Line getLine() throws HibernateException{return new LineImpl();}}
 
使用数据访问对象(DAO)使我们可以将底层数据访问逻辑与业务逻辑分离开。我们构建了为每一个数据源提供 GRUD (创建、读取、更新、删除)操作的 DAO 类。
下面是一个数据源GRUD(创建)操作的DAO实例.
1.接口(DemoDAO.java)
package com.company.demo.dao; import net.sf.hibernate.HibernateException;import com.company.demo.jdo.Demo;import com.company.demo.datamodule.*;/*** <p>Title: Struts+Hibernate开发模板</p>* <p>Description: 通用开发模板</p>* <p>Copyright: Copyright (c) 2003</p>* <p>Company: 优势科技</p>* @author 段洪杰* @version 1.0*/public interface DemoDAO {/**设置数据模型**/public void setDataModule(DataModule dataModule);/** 建立对象 **/public void createDemo(Demo demo) throws HibernateException,Exception;}
2.抽象工厂(DemoDAOFactory.java)
package com.company.demo.dao; /*** <p>Title: Struts+Hibernate开发模板</p>* <p>Description: 通用开发模板</p>* <p>Copyright: Copyright (c) 2003</p>* <p>Company: 优势科技</p>* @author 段洪杰* @version 1.0*/public class DemoDAOFactory {private DemoDAOFactory(){ }public final static DemoDAO getDemoDAO(){return new DemoDAOImpl();}}
3.DAO类(DemoDAOImpl.java)
package com.company.demo.dao; import java.util.List;import com.company.demo.datamodule.*;import com.company.demo.jdo.Demo;import net.sf.hibernate.SessionFactory;import net.sf.hibernate.HibernateException;import net.sf.hibernate.Session;import net.sf.hibernate.Transaction;import net.sf.hibernate.Query;/*** <p>Title: Struts+Hibernate开发模板</p>* <p>Description: 通用开发模板</p>* <p>Copyright: Copyright (c) 2003</p>* <p>Company: 优势科技</p>* @author 段洪杰* @version 1.0*/public class DemoDAOImpl implements DemoDAO {private SessionFactory sessionFactory;private DataModule dataModule;/*** 设数据模型* @param dataModule*/public void setDataModule(DataModule dataModule){this.dataModule=dataModule;this.sessionFactory=dataModule.getSessionFactory();}/*** 建立DEMO* @param demo* @throws HibernateException* @throws java.lang.Exception*/public void createDemo(Demo demo) throws HibernateException,Exception {Transaction transaction = null;Session session=sessionFactory.openSession();try{transaction = session.beginTransaction();session.save(demo);transaction.commit();}catch(HibernateException he){if ( transaction!=null ){transaction.rollback();}throw he;}finally{session.close();}}}
 
 
1.表示层(应用了template)
JSP文件(template/Basictemplate.jsp)
<%@ page contentType="text/html; charset=gb2312" %><%@ taglib uri='/WEB-INF/struts-template.tld' prefix='template' %> <html><head><title><template:get name='title'/></title><META HTTP-EQUIV="Content-Type" CONTENT="text/html;CHARSET=gb2312"><META HTTP-EQUIV="Content-Language" CONTENT="zh-CN"><META name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5"><META name="keywords" content="extreme programming, extreme projects, design pattern, J2EE, forum, chinese"><LINK href="default.css" type="text/css" rel="stylesheet"></head><body topmargin='0'><table width="95%" border="0" align="center"><tr><td width="17%" rowspan="3"><!-- START OF NAVBAR --><template:get name='navbar'/><!-- END OF NAVBAR --></td><td width="83%" valign="top"><!-- START OF HEADER --><template:get name='header'/><!-- END OF HEADER --></td></tr><tr><td valign="top"><!-- START OF CONTENT --><template:get name='content'/><!--END OF CONTENT --></td></tr><tr><td valign="top"><!-- START OF FOOTER --><template:get name='footer'/><!-- END OF FOOTER --></td></tr></table></body></html>
JSP文件(addDemo.jsp)
<%/*** <p>Title: Struts开发测试1.0</p>* <p>Description:项目说明 </p>* <p>Copyright: Copyright (c) 2003-2008 </p>* <p>Company:优势科技 </p>* @author 段洪杰* @version 1.0* @time [2003年10月22日 14时50分]**/ %><%@page contentType="text/html; charset=gb2312" %><%@taglib uri='/WEB-INF/struts-template.tld' prefix='template' %><template:insert template='/template/basicTemplate.jsp'><template:put name='title' content='Struts开发测试1.0' direct='true'/><template:put name='navbar' content='/content/navbar.jsp' /><template:put name='header' content='/content/header.jsp' /><template:put name='content' content='/content/addDemo.jsp'/><template:put name='footer' content='/content/footer.jsp' /></template:insert>
JSP文件(content/addDemo.jsp)
<%/*** <p>Title: Struts开发测试1.0</p>* <p>Description:项目说明 </p>* <p>Copyright: Copyright (c) 2003-2008 </p>* <p>Company:优势科技 </p>* @author 段洪杰* @version 1.0* @time [2003年10月22日 14时50分]**/ %><%@page contentType = "text/html; charset=GB2312" %><%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %><%@taglib uri="/WEB-INF/ImageTag.tld" prefix="image" %><%@taglib uri="/WEB-INF/DateTag.tld" prefix="date" %><jsp:useBean id="sessionBean" scope="session" class="com.company.demo.web.SessionBean" /><html:errors/><FORM METHOD="post" ACTION="addDemoAction.do" ><p>名字(name) :<input name="name" type="text"></p><p>日期(date) :<date:inputButton type="date" name="userDate"/></p><p>日期(date) :<date:inputButton type="datetime" name="userDateTime"/></p><p><image:uploadButton savePath="saveimagepath"/></p><p><input type="submit" name="Submit" value="提交"><input type="reset" name="Submit2" value="重置"></p></FORM>
控制层(struts-config.xml)
<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.0//EN" "http://jakarta.apache.org/struts/dtds/struts-config_1_0.dtd"><struts-config><form-beans><form-bean name="demoActionForm" type="com.company.demo.web.DemoActionForm" /><form-bean name="imageUploadActionForm" type="com.company.demo.web.ImageUploadActionForm" /></form-beans><global-forwards><forward name="unknown-error" path="/error.jsp" /><forward name="success" path="/success.jsp" /></global-forwards><action-mappings><action name="demoActionForm" type="com.company.demo.web.AddDemoAction" input="/addDemo.jsp" scope="request" path="/addDemoAction" /><action name="imageUploadActionForm" type="com.company.demo.web.ImageUploadAction" input="/content/imageUpload.jsp" scope="request" path="/imageUploadAction" /></action-mappings></struts-config>
文件(DemoActionForm.java)
package com.company.demo.web; import org.apache.struts.action.*;import javax.servlet.http.*;public class DemoActionForm extends ActionForm {private String name;private String userDate;private String userDateTime;public String getName() {return name;}public void setName(String name) {this.name = name;}public String getUserDate() {return userDate;}public void setUserDate(String userDate) {this.userDate = userDate;}public String getUserDateTime() {return userDateTime;}public void setUserDateTime(String userDateTime) {this.userDateTime = userDateTime;}public ActionErrors validate(ActionMapping actionMapping, HttpServletRequest httpServletRequest) {/**@todo: finish this method, this is just the skeleton.*/return null;}public void reset(ActionMapping actionMapping, HttpServletRequest httpServletRequest) {}}
应用逻辑层(AddDemoAction.java)
package com.company.demo.web; import org.apache.struts.action.*;import javax.servlet.http.*;import java.util.Date;import java.text.DateFormat;import java.text.SimpleDateFormat;import com.company.demo.jdo.Demo;import com.company.demo.dao.DemoDAO;import com.company.demo.dao.DemoDAOFactory;import com.company.demo.dao.DemoDAOImpl;public class AddDemoAction extends Action {public ActionForward perform(ActionMapping actionMapping, ActionForm actionForm, HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) {/**@todo: complete the business logic here, this is just a skeleton.*/DemoActionForm demoActionForm = (DemoActionForm) actionForm;SessionBean sessionBean = (SessionBean) httpServletRequest.getSession().getAttribute("sessionBean");if (sessionBean == null) {httpServletRequest.setAttribute("message", "系统超时,请重新登录!!!");return actionMapping.findForward("unknown-error");}else {try {Demo demo = new Demo();demo.setName(demoActionForm.getName());DateFormat dateTimeFormat = new SimpleDateFormat("yyyy-MM-dd hh:ss:mm");Date userDateTime = dateTimeFormat.parse(demoActionForm.getUserDateTime());demo.setSystemDate(userDateTime);DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");Date userDate = dateFormat.parse(demoActionForm.getUserDate());demo.setUserDate(userDate);DemoDAO demoDAO = DemoDAOFactory.getDemoDAO();demoDAO.setDataModule(sessionBean.getDataModule());demoDAO.createDemo(demo);}catch (Exception ex) {httpServletRequest.setAttribute("message",ex.toString());return (actionMapping.findForward("unknown-error"));}httpServletRequest.setAttribute("message", "成功!");return (actionMapping.findForward("success"));}}}
 
 
1.自定义标签库(DateTag.tld)
<?xml version="1.0" encoding="GB2312" ?> <!DOCTYPE taglibPUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.2//EN""http://java.sun.com/j2ee/dtds/web-jsptaglibrary_1_2.dtd"><taglib><tlibversion>1.0</tlibversion><jspversion>1.2</jspversion><shortname>Date Tag Library</shortname><info>日期录入标签库</info><tag><name>inputButton</name><tagclass>com.company.demo.tags.DateTag</tagclass><bodycontent>empty</bodycontent><attribute><name>name</name><required>true</required><rtexprvalue>true</rtexprvalue></attribute><attribute><name>type</name><required>true</required><rtexprvalue>true</rtexprvalue></attribute></tag></taglib>
2.Tag类(DateTag.java)
package com.company.demo.tags; import javax.servlet.jsp.*;import javax.servlet.jsp.tagext.*;import javax.servlet.*;/*** <p>Title: </p>* <p>Description: </p>* <p>Copyright: Copyright (c) 2003</p>* <p>Company: </p>* @author 段洪杰* @version 1.0* 生成日期录框*/public class DateTag extends TagSupport{String type,name; //类型和参数名public void setType(String type)throws JspException {this.type=type;}public void setName(String name)throws JspException {this.name=name;}public int doStartTag() throws JspException {String string,dialogHeight,dialogWidth,size;if(type=="date") {dialogHeight="290";dialogWidth="240";size="10";}else if(type=="datetime") {dialogHeight="315";dialogWidth="240";size="18";}else {throw new JspTagException("类型参数错误,只能选择date或datetime!");}string="<SCRIPT language=javascript>"+"function selectDate"+name+"(oSource){"+"window.showModalDialog('content/dtpicker.jsp?rn='+Math.random(),oSource,'dialogHeight:"+dialogHeight+"px; dialogWidth: "+dialogWidth+"px;center: Yes; help: No; resizable: No;scroll:No;status: No;')"+"}"+"</script>"+"<INPUT readOnly size="+size+" name="+name+" DataType=/"date/" comparer=/"compareToLastUsedOn/" dateTimeType="+type+">"+"<IMG src=/"images/select.gif/" width=/"23/" height=/"23/" align=absMiddle"+" onclick=selectDate"+name+"(document.all(this.sourceIndex-1))> ";try{JspWriter out=pageContext.getOut();out.println(string);}catch(Exception ex){throw new JspTagException("程序调用标签时出错: "+ex.getMessage());}return SKIP_BODY;}public int doEndTag() throws JspException {return EVAL_PAGE;}}
 
 
1.修改web.xml文件,在<web-app>标签后增加如下内容.
<filter><filter-name>Set Character Encoding</filter-name><filter-class>com.company.demo.util.SetEncodingFilter</filter-class><init-param><param-name>encoding</param-name><param-value>gb2312</param-value></init-param></filter><filter-mapping><filter-name>Set Character Encoding</filter-name><url-pattern>/*</url-pattern></filter-mapping><servlet>
2.创建类文件(SetEncodingFilter.java)
package com.company.demo.util; import java.io.IOException;import javax.servlet.Filter;import javax.servlet.FilterChain;import javax.servlet.FilterConfig;import javax.servlet.ServletException;import javax.servlet.ServletRequest;import javax.servlet.ServletResponse;import javax.servlet.UnavailableException;/*** Set All HttpRequest Encoding*/public class SetEncodingFilterimplements Filter {/*** The default character encoding to set for requests that pass through* this filter.*/protected String encoding = null;/*** The filter configuration object we are associated with. If this value* is null, this filter instance is not currently configured.*/protected FilterConfig filterConfig = null;/*** Should a character encoding specified by the client be ignored?*/protected boolean ignore = true;/*** Take this filter out of service.*/public void destroy() {this.encoding = null;this.filterConfig = null;}/*** Select and set (if specified) the character encoding to be used to* interpret request parameters for this request.** @param request The servlet request we are processing* @param result The servlet response we are creating* @param chain The filter chain we are processing** @exception IOException if an input/output error occurs* @exception ServletException if a servlet error occurs*/public void doFilter(ServletRequest request,ServletResponse response,FilterChain chain) throws IOException, ServletException {if (ignore || (request.getCharacterEncoding() == null)) {request.setCharacterEncoding(selectEncoding(request));}chain.doFilter(request, response);}/*** Place this filter into service.* @param filterConfig The filter configuration object*/public void init(FilterConfig filterConfig) throws ServletException {this.filterConfig = filterConfig;this.encoding = filterConfig.getInitParameter("encoding");String value = filterConfig.getInitParameter("ignore");if (value == null)this.ignore = true;else if (value.equalsIgnoreCase("true") || value.equalsIgnoreCase("yes"))this.ignore = true;elsethis.ignore = false;}/*** Select an appropriate character encoding to be used, based on the* characteristics of the current request and/or filter initialization* parameters. If no character encoding should be set, return* <code>null</code>.* <p>* The default implementation unconditionally returns the value configured* by the <strong>encoding</strong> initialization parameter for this* filter.** @param request The servlet request we are processing*/protected String selectEncoding(ServletRequest request) {return (this.encoding);}/*** Returns the filterConfig.* @return FilterConfig*/public FilterConfig getFilterConfig() {return filterConfig;}/*** Sets the filterConfig.* @param filterConfig The filterConfig to set*/public void setFilterConfig(FilterConfig filterConfig) {this.filterConfig = filterConfig;}}