第五周作业 项目的进展情况

先说学生端：

  先说框架的搭建，本项目使用的是SSH框架，用到的表六张。学生端的有七个功能。都实现了，后期会加上一点优化的功能包括界面设计，更多的检查。

  下面是一些比较重要的类的实现

  1.增删改查

package cn.hp.base.dao;

import java.io.Serializable;
import java.lang.reflect.ParameterizedType;
import java.util.List;

import org.hibernate.Query;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import cn.hp.core.page.PageResult;
import cn.hp.core.util.QueryHelper;

public abstract class BaseDaoImpl<T> extends HibernateDaoSupport implements BaseDao<T> {
     Class<T> clazz;
       public BaseDaoImpl()
       {//BaseDaoImpl<User>获取弗雷德简单类名
           ParameterizedType pt=(ParameterizedType) this.getClass().getGenericSuperclass();
           clazz=(Class<T>) pt.getActualTypeArguments()[0];//
       }
    
    @Override
    public void save(T entity) {
        getHibernateTemplate().save(entity);
    }

    @Override
    public void update(T entity) {
        getHibernateTemplate().update(entity);
    }

    @Override
    public void delete(Serializable id) {
        // TODO Auto-generated method stub
        
    }

    @Override
    public T findObjectById(Serializable id) {
        return getHibernateTemplate().get(clazz, id);//getHibernateTemplate().get(clazz, id);
    }

    @Override
    public List<T> findAll() {
         Query query = getSession().createQuery("from "+clazz.getSimpleName());
         return query.list();
    }
    
    @Override
    public PageResult getPageResult(QueryHelper queryHelper, int pageNo,
            int pageSize) {
        System.out.println(queryHelper.getQueryListHql()+"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa");
        Query query=getSession().createQuery(queryHelper.getQueryListHql());
        List<Object> parameters=queryHelper.getParameters();
        if(parameters!=null)
        {
            for(int i=0;i<parameters.size();i++)
            {
                query.setParameter(i, parameters.get(i));
            }
        }
        
        if(pageNo<1) pageNo=1;
        query.setFirstResult((pageNo-1)*pageSize);//设置数据的起始索引号
        query.setMaxResults(pageSize);
        List items= query.list();
        //获取总记录数
        Query queryCount=getSession().createQuery(queryHelper.getQuerycountHql());
        if(parameters!=null)
        {
            for(int i=0;i<parameters.size();i++)
            {
                queryCount.setParameter(i, parameters.get(i));
            }
        }
         long tptalCount = (Long) queryCount.uniqueResult();
         
        return new PageResult(tptalCount, pageNo, pageSize, items);
    }
    
}

  2.查询助手

package cn.hp.core.util;

import java.util.ArrayList;
import java.util.List;

public class QueryHelper {
    //from子句
    private String fromClause="";
    //where子句
    private String whereClause="";
    //order by子句
    private String orderByClause="";
    
    private List<Object> parameters;
    //排序顺序
    public static String ORDER_BY_DESC="DESC";
    public static String ORDER_BY_ASC="ASC";
    /*
     * 构造from子句
     * Class clazz实体类
     * String alias实体类对应的别名
     */
    public QueryHelper(Class clazz,String alias)
    {
        fromClause="FROM "+clazz.getSimpleName()+" "+alias;
    }
    /*
     * 构造where子句，
     * condition查询条件语句，列如i.title like ?
     * params查询条件中对应的查询条件值，例如：%标题%
     */
    public void addCondition(String condition,Object... params)
    {//设置查询条件值到查询条件值集合中
        if(whereClause.length()>1)
        {
            whereClause+=" AND "+condition;
        }
        else
        {
            whereClause=" WHERE "+condition;
        }
        if(parameters==null)
        {
            parameters=new ArrayList<Object>();
        }
        if(params!=null)
        {
            for(Object param:params)
            {
                parameters.add(param);
            }
        }
    }
    public void addOrderByProperty(String property,String order)
    {//
        if(orderByClause.length()>1)
        {
            orderByClause+=","+property+" "+order;
        }
        else
        {
            orderByClause=" ORDER BY "+property+" "+order;
        }
    }
    
    //1.查询HQL语句
    public String getQueryListHql()
    {
        return fromClause+whereClause+orderByClause;
    }
    
    //1.查询HQL语句
    public String getQuerycountHql()
    {
        return "SELECT count(*) "+fromClause+whereClause;
    }
    
    //2.查询HQL语句？对应的条件值集合
    public List<Object> getParameters()
    {
        return parameters;
    }

}

  3.分页对象

package cn.hp.core.page;

import java.util.ArrayList;
import java.util.List;

public class PageResult {
    //总记录数
    private long totalCount;
    //当前页号
    private int pageNo;
    //总页数
    private int totalPageCount;
    
    //页大小
    private int pageSize;
    //列表记录
    public List items;
    //计算总页数
    public PageResult(long totalCount, int pageNo, int pageSize, List items) {
        //防止出现空指针异常
        this.items = items==null?new ArrayList():items;
        this.totalCount = totalCount;
        this.pageSize = pageSize;
        if(totalCount!=0)//计算总页数
        {
            int tem=(int)totalCount/pageSize;
            this.totalPageCount =totalCount%pageSize==0?tem:tem+1;
            this.pageNo=pageNo;
        }
        else
        {
            this.pageNo =0;
        }
    }
    
    public long getTotalCount() {
        return totalCount;
    }
    public void setTotalCount(long totalCount) {
        this.totalCount = totalCount;
    }
    public int getPageNo() {
        return pageNo;
    }
    public void setPageNo(int pageNo) {
        this.pageNo = pageNo;
    }
    public int getTotalPageCount() {
        return totalPageCount;
    }
    public void setTotalPageCount(int totalPageCount) {
        this.totalPageCount = totalPageCount;
    }
    public int getPageSize() {
        if(pageSize<1) pageSize=1;
        return pageSize;
    }
    public void setPageSize(int pageSize) {
        this.pageSize = pageSize;
    }
    public List getItems() {
        return items;
    }
    public void setItems(List items) {
        this.items = items;
    }
 
}

4.BaseAction，接收页面传过来的常用参数，其他的Action都继承于它。

package cn.hp.stu.action;

import cn.hp.core.page.PageResult;

import com.opensymphony.xwork2.ActionSupport;

public class BaseAction extends ActionSupport{
    
    protected PageResult pageResult;
    private int pageNo;
    private int pageSize;
    protected String[] selectedRow;
    
    
    public String[] getSelectedRow() {
        return selectedRow;
    }

    public void setSelectedRow(String[] selectedRow) {
        this.selectedRow = selectedRow;
    }

    private static int DEFAULT_PAGE_SIZE=3;
    

    public PageResult getPageResult() {
        return pageResult;
    }

    public void setPageResult(PageResult pageResult) {
        this.pageResult = pageResult;
    }

    public int getPageSize() {
        if(pageSize<1) pageSize=DEFAULT_PAGE_SIZE;
        return pageSize;
    }

    public void setPageSize(int pageSize) {
        this.pageSize = pageSize;
    }

    public int getPageNo() {
        return pageNo;
    }

    public void setPageNo(int pageNo) {
        this.pageNo = pageNo;
    }
}

5.接收页面参数的StuAction，主要有上传，下载，跳转等等

package cn.hp.stu.action;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Date;
import java.util.List;

import javax.annotation.Resource;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.io.FileUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.struts2.ServletActionContext;

import cn.hp.core.entity.Classinfo;
import cn.hp.core.entity.Stu;
import cn.hp.core.entity.StuWork;
import cn.hp.core.entity.TeaWork;
import cn.hp.core.stu.Constant;
import cn.hp.core.util.QueryHelper;
import cn.hp.stu.service.StuService;
import cn.hp.stuwork.service.StuWorkService;
import cn.hp.teawork.service.TeaWorkService;

/*
 * 上传作业需修改
 */
public class StuAction extends BaseAction{
    private Stu stu;//
    
    private String stuUserName;//学生的用户名
    private Integer stuScore;//学生的分数
    private String stuPassword;//密码
    private String mail;//邮箱
    
    private String fileName;//上传作业的文件名
     
    private String msg;//显示相应的错误消息
    
    private String username;
    private String password;
    private String RoleType;
    
    private File word;
    private String wordFileName;
    private String wordContentType;
    
    private Date submitTime;
    @Resource
    private StuService stuService; 
    
    private StuWork stuWork;
    @Resource
    private StuWorkService stuWorkService;
    
    private Classinfo classinfo;//查找学生的时候顺便把他的班级查找出来。
    
    @Resource
    private TeaWorkService teaWorkService;
    //顶部
    public String top()
    {
        
        return "top";
    }
    
    //左部的页面
    public String left()
    {
        return "left";
    }
    
    //跳转到学生注册界面
    public String registUI()
    {
        return "registUI";
    }
    
    //跳转到框架的主界面
    public String frame()
    {
        return "frame";
    }
    
    //跳转到教师发布信息的页面
    public String teaPub()
    {
        QueryHelper queryHelper=new QueryHelper(TeaWork.class, "t");
        queryHelper.addCondition("t.teaId =? or t.teaId =?", 1,2);
        pageResult=teaWorkService.findTeapubByStu(queryHelper,getPageNo(),getPageSize());
        return "teapubUI";
    }
    
    //加载教师评论
    public String teacomm()
    {
        Stu stu=(Stu) ServletActionContext.getRequest().getSession().getAttribute(Constant.STU);
        pageResult=stuWorkService.findCommentByStu("hepan",getPageNo(),getPageSize());
        return "teacomm";
    }
    
    //保存学生的注册信息
    public String regist()
    {
        if(StringUtils.isNotBlank(stu.getStuUserName())&&StringUtils.isNotBlank(stu.getStuPassword()))
        {
            List<Stu> ls=stuService.fingStuByUsername(stu.getStuUserName());
            if(ls.size()>0&&ls!=null)
            {
                msg="用户已经存在";
                return "registUI";
            }
            stuService.save(stu);
        }
        else
        {
            msg="用户名或密码为空";
            return "registUI";
        }
        return "home";
    }

    
    public String loginUI()
    {
        return "loginUI";
    }
    
    //查询出分数前十的学生,跳转到转到榜样学习的界面
    public String learn()
    {
        System.out.println("chaxun..................");
        QueryHelper queryHelper=new QueryHelper(StuWork.class, "w");
        queryHelper.addOrderByProperty("w.score ",QueryHelper.ORDER_BY_DESC);
        pageResult=stuService.getPageResult(queryHelper,getPageNo(),getPageSize());
        return "sup_listUI"; 
    }
    
    //用户点击登陆之后执行的代码
    public String login()
    {
        if(null!=RoleType&&RoleType.equals("rbStudent")&&StringUtils.isNotBlank(username)&&StringUtils.isNotBlank(password))
        {
            List<Stu> ls=stuService.fingStuByUsernameAndPassword(username,password);
            if(ls.size()>0&&ls!=null)
            {
                Stu st=ls.get(0);
                ServletActionContext.getRequest().getSession().setAttribute(Constant.STU, st);
                Log log = LogFactory.getLog(getClass());
                return "frame";
            }
            else
            {
                setMsg("用户名或密码错误");
            }
            return "home";
        }
        else 
        {
            setMsg("亲输入用户名密码");
        }
        return "home";
    }
    
    //跳转到学生列表界面
    public String listUI()
    {
        QueryHelper queryHelper=new QueryHelper(Stu.class, " s ");
        //从当前的Session中获取用户的信息，进行查找显示在相应的页面上
//        Stu stu1 = (Stu) ServletActionContext.getRequest().getSession().getAttribute(Constant.STU);
//        queryHelper.addCondition("s.stuUserName=? ", stu1.getStuUserName());
        queryHelper.addCondition("s.stuUserName=? ", "hepan");
        pageResult=stuService.getPageResult(queryHelper,getPageNo(),getPageSize());
        return "listUI";
    }
    
    //依据用户名搜索学生的信息
    public String doSearch()
    {
        if(StringUtils.isNotBlank(stu.getStuUserName()))
        {
            QueryHelper queryHelper=new QueryHelper(Stu.class, "s");
            queryHelper.addCondition(" s.stuUserName like ?", "%"+stu.getStuUserName()+"%");
            pageResult=stuService.getPageResult(queryHelper,getPageNo(),getPageSize());
        }
        return "listUI";
    }
    
    //跳转到编辑学生页面
    public String editUI()
    {
        Stu stu1 = (Stu) ServletActionContext.getRequest().getSession().getAttribute(Constant.STU);
        /*if(StringUtils.isNotBlank(stu.getStuUserName()))
        {
            stu=stuService.findObjectById(stu.getStuUserName());
        }*/
        stu=stuService.findObjectById("hepan");
        return "editUI";
    }
    
    //保存编辑
    public String edit()
    {
        System.out.println(stu.getStuScore());
        System.out.println(stu);
        if(StringUtils.isNotBlank(stu.getStuUserName()))
        {
            stuService.update(stu);
        }
        return listUI();
    }
    
    //处理上传文件的页面
    public String upLoad()
    {
        String realPath = ServletActionContext.getServletContext().getRealPath("upload/stu");
        System.out.println(realPath);
        System.out.println(wordFileName);
        try {
            FileUtils.copyFile(word, new File(realPath, wordFileName));
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        //把上传时间写入相应的表中
        StuWork stuWork=new StuWork();
        //设定学生提交作业的时间
        Date time= new java.sql.Date(new java.util.Date().getTime());
        
        stuWork.setSubmitTime(time);
        stuWork.setWorkPath(fileName);//保存学生上传的文件名
        Stu stu = (Stu) ServletActionContext.getRequest().getSession().getAttribute(Constant.STU);//从Session里面获取学生
        stuWork.setStu(stu);
        
        stuWork.setTeaWork(teaWorkService.findObjectById(1));
        
        stuWorkService.save(stuWork);
        return listUI();
    }
    
    //实现文件的下载
    public void downLoad() throws IOException
    {
        HttpServletResponse response = ServletActionContext.getResponse();
        response.setContentType("text/plain;charset=UTF-8");
        response.setHeader("Content-Disposition", "attachment;filename="
           +new String(this.fileName.getBytes(),"ISO-8859-1"));
        String realPath = ServletActionContext.getServletContext().getRealPath("upload/tea/"+fileName);
        InputStream in=new FileInputStream(realPath);
        ServletOutputStream outputStream = response.getOutputStream();
        byte [] buf=new byte[1024];
        
        while(in.read(buf)!=-1)
        {
            outputStream.write(buf);
        }
        if(in!=null)
        {
            in.close();
        }
        if(outputStream!=null)
        {
            outputStream.close();
        }
    }
    
    public File getWord() {
        return word;
    }

    public void setWord(File word) {
        this.word = word;
    }

    public String getWordFileName() {
        return wordFileName;
    }

    public void setWordFileName(String wordFileName) {
        this.wordFileName = wordFileName;
    }

    public String uploadUI()
    {
        return "uploadUI";
    }
    
    public Stu getStu() {
        return stu;
    }

    public void setStu(Stu stu) {
        this.stu = stu;
    }

    public Integer getStuScore() {
        return stuScore;
    }

    public void setStuScore(Integer stuScore) {
        this.stuScore = stuScore;
    }

    public String getStuUserName() {
        return stuUserName;
    }

    public void setStuUserName(String stuUserName) {
        this.stuUserName = stuUserName;
    }

    public String getStuPassword() {
        return stuPassword;
    }

    public void setStuPassword(String stuPassword) {
        this.stuPassword = stuPassword;
    }

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }
    
    public void addActionError(String anErrorMessage){
           String s=anErrorMessage;
           System.out.println(s+"TUUUUUUUUUUUUUUUUU");
          }
    
   public void addActionMessage(String aMessage){
       String s=aMessage;
   }
   
   public void addFieldError(String fieldName, String errorMessage){
       String s=errorMessage;
       String f=fieldName;
       System.out.println(f);
    }

    public String getWordContentType() {
        return wordContentType;
    }
    
    public void setWordContentType(String wordContentType) {
        this.wordContentType = wordContentType;
    }
    

    public String getFileName() {
        return fileName;
    }

    public void setFileName(String fileName) {
        System.out.println(fileName);
        this.fileName = fileName;
    }
    


    public String getMail() {
        return mail;
    }

    public void setMail(String mail) {
        this.mail = mail;
    }

    public StuService getStuService() {
        return stuService;
    }

    public void setStuService(StuService stuService) {
        this.stuService = stuService;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public String getRoleType() {
        return RoleType;
    }

    public void setRoleType(String roleType) {
        RoleType = roleType;
    }

    public Date getSubmitTime() {
        return submitTime;
    }

    public void setSubmitTime(Date submitTime) {
        this.submitTime = submitTime;
    }

    public StuWork getStuWork() {
        return stuWork;
    }

    public void setStuWork(StuWork stuWork) {
        this.stuWork = stuWork;
    }
    
    
    private String workId;//作业id
    private TeaWork teaWork;//教师作业
    private String workPath;//作业的提交路径
    private Integer score;//分数
    private String comment;//教师的品论
    public String getWorkId() {
        return workId;
    }

    public void setWorkId(String workId) {
        this.workId = workId;
    }

    public TeaWork getTeaWork() {
        return teaWork;
    }

    public void setTeaWork(TeaWork teaWork) {
        this.teaWork = teaWork;
    }

    public String getWorkPath() {
        return workPath;
    }

    public void setWorkPath(String workPath) {
        this.workPath = workPath;
    }

    public Integer getScore() {
        return score;
    }

    public void setScore(Integer score) {
        this.score = score;
    }

    public String getComment() {
        System.out.println(comment+"1111111111111111111");
        return comment;
    }

    public void setComment(String comment) {
        this.comment = comment;
    }

    public Classinfo getClassinfo() {
        return classinfo;
    }

    public void setClassinfo(Classinfo classinfo) {
        this.classinfo = classinfo;
    }
    
}

界面预览现在还没加上界面的美化，简单地预览一下，功能都实现了。

 界面后期会增强：包括美化，增加js，HTML，JQuery等等