为了让大家更方便的了解我这个设计，我先把我的一些整体的规划都说出来吧，由于我是初学，难免会参照本书籍来看，我买的是那本孙某女的书《精通：*****》，看了看她前面的介绍，我一看了不得，能出书，写的还都不错，这女的可不得了，渐渐疑惑的地方非常多，比如例子里面注释都拽上了英语，搞不懂，而当我从网上下到电子盗版jakarta struts（我已安下栽说明要求的那样在24小时后删除了）这本书的时候我才恍然大悟，原来是抄袭啊？至于是谁抄的谁，口说无凭，不能乱诽谤，不过大家心里都该有杆称！
下面就是代码了：
package com.boya.subject.model;
public interface Person
{
public Long getId();
public void setId( Long id );
public String getName();
public void setName( String name );
public String getPassword();
public void setPassword( String password );
public String getTelphone();
public void setTelphone( String telphone );
public String getUser();
public void setUser( String user );
public String getType();
}
package com.boya.subject.model;
public abstract class User implements Person
{
private Long id;数据库id
private String user;用户名
private String password;密码
private String name;姓名
private String telphone;电话
public Long getId()
{
return id;
}
public void setId( Long id )
{
this.id = id;
}
public String getName()
{
return name;
}
public void setName( String name )
{
this.name = name;
}
public String getPassword()
{
return password;
}
public void setPassword( String password )
{
this.password = password;
}
public String getTelphone()
{
return telphone;
}
public void setTelphone( String telphone )
{
this.telphone = telphone;
}
public String getUser()
{
return user;
}
public void setUser( String user )
{
this.user = user;
}
}
package com.boya.subject.model;
public class Admin extends User
{
private String grade = null;
管理员权限
public String getGrade()
{
return grade;
}
public void setGrade( String grade )
{
this.grade = grade;
}
public String getType()
{
return "admin";
}
}
package com.boya.subject.model;
public class Teacher extends User
{
private String level;
教师职称
public String getLevel()
{
return level;
}
public void setLevel( String level )
{
this.level = level;
}
public String getType()
{
return "teacher";
}
}
package com.boya.subject.model;
public class Student extends User
{
private String sn;学生学号
private SchoolClass schoolClass;
班级
public SchoolClass getSchoolClass()
{
return schoolClass;
}
public void setSchoolClass( SchoolClass schoolClass )
{
this.schoolClass = schoolClass;
}
public String getSn()
{
return sn;
}
public void setSn( String sn )
{
this.sn = sn;
}
public String getType()
{
return "student";
}
}
而对于Action我分别做了一个抽象类，之后别的从这里继承
先是Action的
package com.boya.subject.controller;
import java.io.IOException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
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.boya.subject.frame.ID;
import com.boya.subject.frame.ServiceFactory;
import com.boya.subject.model.Person;
import com.boya.subject.service.Service;
import com.boya.subject.util.HtmlUtil;
public abstract class BaseAction extends Action
{
/**
* 由服务工厂方法创建服务
* @return 数据库操作的服务
* 2006-5-16 18:10:04
*/
public Service getService()
{
ServiceFactory factory = (ServiceFactory) getAppObject( ID.SF );
Service service = null;
try
{
service = factory.createService();
}
catch ( Exception e )
{
}
return service;
}
/**
* 判断用户是否合法登陆
* @param req
* @return 用户是否登陆
* 2006-5-16 18:11:26
*/
public boolean isLogin( HttpServletRequest req )
{
if ( getPerson( req ) != null ) return true;
else
return false;
}
/**
* 抽象方法,子类实现
* @param mapping
* @param form
* @param req
* @param res
* @return
* @throws Exception
* 2006-5-16 18:12:54
*/
protected abstract ActionForward executeAction( ActionMapping mapping,
ActionForm form, HttpServletRequest req, HttpServletResponse res )
throws Exception;
/**
* 获取session范围的用户
* @param req
* @return 当前用户
* 2006-5-16 18:13:35
*/
public abstract Person getPerson( HttpServletRequest req );
/**
* 父类的执行Action
* @see org.apache.struts.action.Action#execute(org.apache.struts.action.ActionMapping, org.apache.struts.action.ActionForm, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
*/
public ActionForward execute( ActionMapping mapping, ActionForm form,
HttpServletRequest req, HttpServletResponse res ) throws Exception
{
if ( !isLogin( req ) )
{
HtmlUtil.callParentGo( res.getWriter(), ID.M_UNLOGIN, ID.P_INDEX );
return null;
}
return executeAction( mapping, form, req, res );
}
/**
* 删除session中属性为attribute的对象
* @param req
* @param attribute 对象属性
* 2006-5-16 18:16:59
*/
public void removeSessionObject( HttpServletRequest req, String attribute )
{
HttpSession session = req.getSession();
session.removeAttribute( attribute );
}
/**
* 设置session中属性为attribute的对象
* @param req
* @param attribute 设置属性
* @param o 设置对象
* 2006-5-16 18:17:50
*/
public void setSessionObject( HttpServletRequest req, String attribute,
Object o )
{
req.getSession().setAttribute( attribute, o );
}
/**
* 设置application中属性为attribute的对象
* @param req
* @param attribute 设置属性
* @param o 设置对象
* 2006-5-16 18:17:50
*/
public void setAppObject( String attribute, Object o )
{
servlet.getServletContext().setAttribute( attribute, o );
}
public Object getSessionObject( HttpServletRequest req, String attribute )
{
Object obj = null;
HttpSession session = req.getSession( false );
if ( session != null ) obj = session.getAttribute( attribute );
return obj;
}
public Object getAppObject( String attribute )
{
return servlet.getServletContext().getAttribute( attribute );
}
public void callParentGo( HttpServletResponse res, String msg, String url )
throws IOException
{
HtmlUtil.callParentGo( res.getWriter(), msg, url );
}
public void callMeGo( HttpServletResponse res, String msg, String url )
throws IOException
{
HtmlUtil.callMeGo( res.getWriter(), msg, url );
}
public void callBack( HttpServletResponse res, String msg )
throws IOException
{
HtmlUtil.callBack( res.getWriter(), msg );
}
public void callMeConfirm( HttpServletResponse res, String msg, String ok,
String no ) throws IOException
{
HtmlUtil.callMeConfirm( res.getWriter(), msg, ok, no );
}
}
再是DispatchAction的
package com.boya.subject.controller;
import java.io.IOException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
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.boya.subject.frame.ID;
import com.boya.subject.frame.ServiceFactory;
import com.boya.subject.model.Person;
import com.boya.subject.service.Service;
import com.boya.subject.util.HtmlUtil;
public abstract class BaseDispatchAction extends DispatchAction
{
/**
* 由服务工厂方法创建服务
* @return 数据库操作的服务
* 2006-5-16 18:10:04
*/
public Service getService()
{
ServiceFactory factory = (ServiceFactory) getAppObject( ID.SF );
Service service = null;
try
{
service = factory.createService();
}
catch ( Exception e )
{
}
return service;
}
/**
* 判断用户是否合法登陆
* @param req
* @return 用户是否登陆
* 2006-5-16 18:11:26
*/
public boolean isLogin( HttpServletRequest req )
{
if ( getPerson( req ) != null ) return true;
else
return false;
}
/**
* 获取session范围的用户
* @param req
* @return 当前用户
* 2006-5-16 18:13:35
*/
public abstract Person getPerson( HttpServletRequest req );
/**
* 父类的执行DispatchAction
* @see org.apache.struts.action.Action#execute(org.apache.struts.action.ActionMapping, org.apache.struts.action.ActionForm, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
*/
public ActionForward execute( ActionMapping mapping, ActionForm form,
HttpServletRequest req, HttpServletResponse res ) throws Exception
{
try
{
if ( !isLogin( req ) )
{
callParentGo( res, ID.M_UNLOGIN, ID.P_INDEX );
return null;
}
return super.execute( mapping, form, req, res );
}
catch ( NoSuchMethodException e )
{
callBack( res, ID.M_NOMETHOD );
return null;
}
}
/**
* 删除session中属性为attribute的对象
* @param req
* @param attribute 对象属性
* 2006-5-16 18:16:59
*/
public void removeSessionObject( HttpServletRequest req, String attribute )
{
HttpSession session = req.getSession();
session.removeAttribute( attribute );
}
/**
* 设置session中属性为attribute的对象
* @param req
* @param attribute 设置属性
* @param o 设置对象
* 2006-5-16 18:17:50
*/
public void setSessionObject( HttpServletRequest req, String attribute,
Object o )
{
req.getSession().setAttribute( attribute, o );
}
/**
* 设置application中属性为attribute的对象
* @param req
* @param attribute 设置属性
* @param o 设置对象
* 2006-5-16 18:17:50
*/
public void setAppObject( String attribute, Object o )
{
servlet.getServletContext().setAttribute( attribute, o );
}
public Object getSessionObject( HttpServletRequest req, String attribute )
{
Object obj = null;
HttpSession session = req.getSession( false );
if ( session != null ) obj = session.getAttribute( attribute );
return obj;
}
public Object getAppObject( String attribute )
{
return servlet.getServletContext().getAttribute( attribute );
}
public void callParentGo( HttpServletResponse res, String msg, String url )
throws IOException
{
HtmlUtil.callParentGo( res.getWriter(), msg, url );
}
public void callMeGo( HttpServletResponse res, String msg, String url )
throws IOException
{
HtmlUtil.callMeGo( res.getWriter(), msg, url );
}
public void callBack( HttpServletResponse res, String msg )
throws IOException
{
HtmlUtil.callBack( res.getWriter(), msg );
}
public void callMeConfirm( HttpServletResponse res, String msg, String ok,
String no ) throws IOException
{
HtmlUtil.callMeConfirm( res.getWriter(), msg, ok, no );
}
}
对于程序中的一些提示信息，我比较喜欢用JS来写，所以我把这些都放到了一个类中
import java.io.IOException;
import java.io.Writer;
public class HtmlUtil
{
public static void callParentGo( Writer out, String msg, String url )
throws IOException
{
out.write( "<script language=\"javascript\">" );
out.write( "alert(\"" + msg + "\");" );
out.write( "parent.location.href=\"" + url + "\";" );
out.write( "</script>" );
}
public static void callMeGo( Writer out, String msg, String url )
throws IOException
{
out.write( "<script language=\"javascript\">" );
out.write( "alert(\"" + msg + "\");" );
out.write( "location.href=\"" + url + "\";" );
out.write( "</script>" );
}
public static void callMeConfirm( Writer out, String msg ,String ok, String no )
throws IOException
{
out.write( "<script language=\"javascript\">" );
out.write( "if(window.confirm(\"" + msg + "\")){" );
out.write( "location.href=\"" + ok + "\"}else{" );
out.write( "location.href=\"" + no + "\"}" );
out.write( "</script>" );
}
public static void callBack( Writer out, String msg ) throws IOException
{
out.write( "<script language=\"javascript\">" );
out.write( "alert(\"" + msg + "\");" );
out.write( "parent.history.back();" );
out.write( "</script>" );
}
}