學習Struts+spring+hibernate的筆記（2）

3.做DAO代碼,

package infoweb.dao;

import java.util.List;
import java.util.Iterator;

import infoweb.pojo.Board;


import net.sf.hibernate.HibernateException;
import net.sf.hibernate.Query;
import net.sf.hibernate.Session;

import org.springframework.orm.hibernate.HibernateCallback;
import org.springframework.orm.hibernate.support.HibernateDaoSupport;


/**
 * <p>Title: 版塊分類DAOImpl</p>
 * <p>Description: 用樹型結構實現</p>
 * <p>Copyright: Copyright (c); 2004</p>
 * <p>Company: </p>
 * @author 段洪傑
 * @version 1.0
 */


public class BoardTreeDAOImpl extends HibernateDaoSupport implements
    IBoardTreeDAO {


  /**
   * 構造函數
   */
  public BoardTreeDAOImpl(); {
    super();;
  }


  /**
   * 通過ID取得版塊
   * @param id String
   * @return Board
   */

  public Board getBoardById(String id); {
    Board board = (Board); getHibernateTemplate();.load(Board.class, id);;
    return board;
  }


  /**
   * 取根葉
   * @return Iterator
   */
  public Iterator getRoots(); throws HibernateException {
    String queryString =
        "select board from Board as board where board.parentId='root' order by board.id desc";
    List roots = getHibernateTemplate();.find(queryString);;
    return roots.iterator();;
  }


  /**
   * 存根葉
   * @param board Board
   */
  public void setRoot(Board board); {
    board.setParentId("root");;
    getHibernateTemplate();.save(board);;
  }


  /**
   * 取子葉
   * @param  parentid String
   * @return List
   */
  public Iterator getChildren(String parentid); {
    /*
         String queryString =
     "select board as Board where board.parent_id='parentid' order by board.id desc";
         List children = getHibernateTemplate();.find(queryString);;
         return children;
     */
    Board parent = (Board); getHibernateTemplate();.load(Board.class, parentid);;
    return parent.getChildren();.iterator();;
  }


  /**
   * 取子葉數
   * @param parentid String
   * @return int
   */

  public int getChildrenCount(String parentid); {
    /*
         String queryString =
     "select count(*); Board where board.parent_id='parentid' order by board.id desc";
         List children = getHibernateTemplate();.find(queryString);;
         int count = ((Integer); children.iterator();.next(););.intValue();;
         return count;
     */
    Board parent = (Board); getHibernateTemplate();.load(Board.class, parentid);;
    int count = parent.getChildren();.size();;
    return count;
  }


  /**
   * 存子葉
   * @param parentLeaf Leaf
   */
  public void setChild(Board board, String parentid); {
    board.setParentId(parentid);;
    getHibernateTemplate();.save(board);;
  }


  /**
   *
   * 刪除該葉和它的子葉
   * @param board Board
   */
  public void deleteBranch(Board board); {
      getHibernateTemplate();.delete(board);;
  }


  /**
   * 根據子葉得到父葉
   * @param child Board
   * @return Board
   */
  public Board getParentByChild(Board child); {
    String parentId = child.getParentId();;
    Board parent = (Board); getHibernateTemplate();.load(Board.class, parentId);;
    return parent;
  }


  /**
   * 通過子ID得到父葉
   * @param id String
   * @return Board
   */
  public Board getParentByChildId(String id); {
    Board child = (Board); getHibernateTemplate();.load(Board.class, id);;
    Board parent = (Board); getHibernateTemplate();.load(Board.class,child.getParentId(););;
    return parent;
  }
}

package infoweb.dao;
import java.util.List;
import java.util.Iterator;
import infoweb.pojo.Board;
import net.sf.hibernate.HibernateException;
import net.sf.hibernate.Query;
import net.sf.hibernate.Session;
import org.springframework.orm.hibernate.HibernateCallback;
import org.springframework.orm.hibernate.support.HibernateDaoSupport;
/**
 * <p>Title: 版塊分類DAOImpl</p>
 * <p>Description: 用樹型結構實現</p>
 * <p>Copyright: Copyright (c); 2004</p>
 * <p>Company: </p>
 * @author 段洪傑
 * @version 1.0
 */
public class BoardTreeDAOImpl extends HibernateDaoSupport implements
    IBoardTreeDAO {
  /**
   * 構造函數
   */
  public BoardTreeDAOImpl(); {
    super();;
  }
  /**
   * 通過ID取得版塊
   * @param id String
   * @return Board
   */
  public Board getBoardById(String id); {
    Board board = (Board); getHibernateTemplate();.load(Board.class, id);;
    return board;
  }
  /**
   * 取根葉
   * @return Iterator
   */
  public Iterator getRoots(); throws HibernateException {
    String queryString =
        "select board from Board as board where board.parentId='root' order by board.id desc";
    List roots = getHibernateTemplate();.find(queryString);;
    return roots.iterator();;
  }
  /**
   * 存根葉
   * @param board Board
   */
  public void setRoot(Board board); {
    board.setParentId("root");;
    getHibernateTemplate();.save(board);;
  }
  /**
   * 取子葉
   * @param  parentid String
   * @return List
   */
  public Iterator getChildren(String parentid); {
    /*
         String queryString =
     "select board as Board where board.parent_id='parentid' order by board.id desc";
         List children = getHibernateTemplate();.find(queryString);;
         return children;
     */
    Board parent = (Board); getHibernateTemplate();.load(Board.class, parentid);;
    return parent.getChildren();.iterator();;
  }
  /**
   * 取子葉數
   * @param parentid String
   * @return int
   */
  public int getChildrenCount(String parentid); {
    /*
         String queryString =
     "select count(*); Board where board.parent_id='parentid' order by board.id desc";
         List children = getHibernateTemplate();.find(queryString);;
         int count = ((Integer); children.iterator();.next(););.intValue();;
         return count;
     */
    Board parent = (Board); getHibernateTemplate();.load(Board.class, parentid);;
    int count = parent.getChildren();.size();;
    return count;
  }
  /**
   * 存子葉
   * @param parentLeaf Leaf
   */
  public void setChild(Board board, String parentid); {
    board.setParentId(parentid);;
    getHibernateTemplate();.save(board);;
  }
  /**
   *
   * 刪除該葉和它的子葉
   * @param board Board
   */
  public void deleteBranch(Board board); {
      getHibernateTemplate();.delete(board);;
  }
  /**
   * 根據子葉得到父葉
   * @param child Board
   * @return Board
   */
  public Board getParentByChild(Board child); {
    String parentId = child.getParentId();;
    Board parent = (Board); getHibernateTemplate();.load(Board.class, parentId);;
    return parent;
  }
  /**
   * 通過子ID得到父葉
   * @param id String
   * @return Board
   */
  public Board getParentByChildId(String id); {
    Board child = (Board); getHibernateTemplate();.load(Board.class, id);;
    Board parent = (Board); getHibernateTemplate();.load(Board.class,child.getParentId(););;
    return parent;
  }
}

4.做service層代碼

package infoweb.service;

import java.util.List;
import java.util.Iterator;
import infoweb.dao.BoardTreeDAOImpl;
import infoweb.dao.IBoardTreeDAO;
import infoweb.pojo.Board;
import infoweb.exception.BoardException;
import net.sf.hibernate.HibernateException;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c); 2004</p>
 * <p>Company: </p>
 * @author 段洪傑
 * @version 1.0
 */
public class BoardServiceSpringImpl implements IBoardService {

    private IBoardTreeDAO boardTreeDAO;

    public BoardServiceSpringImpl(); {
        super();;
    }

    /**
     * 取所有roots版塊
     * @return Iterator
     */
    public Iterator getRoots(); throws BoardException {
        Iterator roots = null;
        try {
            roots = boardTreeDAO.getRoots();;
        } catch (Exception ex); {
            throw new BoardException("取ROOT版塊時出錯! " + ex.toString(););;
        }
        return roots;
    }

    /**
     * 增加Root新版塊
     * @param board Board
     */
    public void setRoot(Board board); throws BoardException {
        try {
            boardTreeDAO.setRoot(board);;
        } catch (Exception ex); {
            throw new BoardException("增加ROOT版塊時出錯! " + ex.toString(););;
        }
    }

    /**
     * 刪除版塊 (包含下級版塊);
     * @param board Board
     */
    public void removeBoard(Board board); throws BoardException {
        try {
            boardTreeDAO.deleteBranch(board);;
        } catch (Exception ex); {
            throw new BoardException("刪除版塊時出錯! " + ex.toString(););;
        }
    }

    /**
     *
     * @return IBoardTreeDAO
     */
    public IBoardTreeDAO getBoardTreeDAO(); {
        return boardTreeDAO;
    }

    /**
     *
     * @param boardTreeDAO IBoardTreeDAO
     */
    public void setBoardTreeDAO(IBoardTreeDAO boardTreeDAO); {
        this.boardTreeDAO = boardTreeDAO;
    }

}

package infoweb.service;
import java.util.List;
import java.util.Iterator;
import infoweb.dao.BoardTreeDAOImpl;
import infoweb.dao.IBoardTreeDAO;
import infoweb.pojo.Board;
import infoweb.exception.BoardException;
import net.sf.hibernate.HibernateException;
/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c); 2004</p>
 * <p>Company: </p>
 * @author 段洪傑
 * @version 1.0
 */
public class BoardServiceSpringImpl implements IBoardService {
    private IBoardTreeDAO boardTreeDAO;
    public BoardServiceSpringImpl(); {
        super();;
    }
    /**
     * 取所有roots版塊
     * @return Iterator
     */
    public Iterator getRoots(); throws BoardException {
        Iterator roots = null;
        try {
            roots = boardTreeDAO.getRoots();;
        } catch (Exception ex); {
            throw new BoardException("取ROOT版塊時出錯! " + ex.toString(););;
        }
        return roots;
    }
    /**
     * 增加Root新版塊
     * @param board Board
     */
    public void setRoot(Board board); throws BoardException {
        try {
            boardTreeDAO.setRoot(board);;
        } catch (Exception ex); {
            throw new BoardException("增加ROOT版塊時出錯! " + ex.toString(););;
        }
    }
    /**
     * 刪除版塊 (包含下級版塊);
     * @param board Board
     */
    public void removeBoard(Board board); throws BoardException {
        try {
            boardTreeDAO.deleteBranch(board);;
        } catch (Exception ex); {
            throw new BoardException("刪除版塊時出錯! " + ex.toString(););;
        }
    }
    /**
     *
     * @return IBoardTreeDAO
     */
    public IBoardTreeDAO getBoardTreeDAO(); {
        return boardTreeDAO;
    }
    /**
     *
     * @param boardTreeDAO IBoardTreeDAO
     */
    public void setBoardTreeDAO(IBoardTreeDAO boardTreeDAO); {
        this.boardTreeDAO = boardTreeDAO;
    }
}

5.做ACTION的父類

package infoweb.web;


import javax.servlet.ServletContext;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionServlet;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;

import infoweb.service.IBoardService;


/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c); 2004</p>
 * <p>Company: </p>
 * @author 段洪傑
 * @version 1.0
 */

public class BaseAction extends Action {

  private IBoardService boardService;

  public void setServlet(ActionServlet actionServlet); {
    super.setServlet(actionServlet);;
    ServletContext servletContext = actionServlet.getServletContext();;
    WebApplicationContext wac =
        WebApplicationContextUtils.getRequiredWebApplicationContext(
        servletContext);;
    this.boardService = (IBoardService); wac.getBean("boardService");;
  }

  protected IBoardService getBoardService(); {
    return boardService;
  }

}

package infoweb.web;
import javax.servlet.ServletContext;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionServlet;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;
import infoweb.service.IBoardService;
/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c); 2004</p>
 * <p>Company: </p>
 * @author 段洪傑
 * @version 1.0
 */
public class BaseAction extends Action {
  private IBoardService boardService;
  public void setServlet(ActionServlet actionServlet); {
    super.setServlet(actionServlet);;
    ServletContext servletContext = actionServlet.getServletContext();;
    WebApplicationContext wac =
        WebApplicationContextUtils.getRequiredWebApplicationContext(
        servletContext);;
    this.boardService = (IBoardService); wac.getBean("boardService");;
  }
  protected IBoardService getBoardService(); {
    return boardService;
  }
}

6.做action類

package infoweb.web;

import infoweb.pojo.Board;
import org.apache.commons.beanutils.PropertyUtils;
import org.apache.struts.action.*;
import org.apache.log4j.Logger;
import javax.servlet.http.*;
import java.util.Iterator;
import java.util.Date;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c); 2004</p>
 * <p>Company: </p>
 * @author 段洪傑
 * @version 1.0
 */


public class SetBoardAction extends BaseAction {

    private static Logger log = Logger.getLogger(SetBoardAction.class);;

    public ActionForward execute(ActionMapping actionMapping,
                                 ActionForm actionForm,
                                 HttpServletRequest httpServletRequest,
                                 HttpServletResponse httpServletResponse); throws
            Exception {

        // SessionBean sessionBean = (SessionBean); httpServletRequest.getSession();.getAttribute("sessionBean");;
        BoardForm boardForm = (BoardForm); actionForm;
        //String backURL = httpServletRequest.getHeader("Referer");;
        /*
        if (sessionBean==null||!sessionBean.getIsLogon();); {
            httpServletRequest.setAttribute("message", "系統超時,或者沒有登錄 .返回重新登錄!");;
            httpServletRequest.setAttribute("locationFile",
                                            "location='index.jsp';");;
            return actionMapping.findForward("message");;
        }
        */
        Board board = new Board();;
        boardForm.setCreateDate(new Date(););;
        PropertyUtils.copyProperties(board, boardForm);;
        getBoardService();.setRoot(board);;

        httpServletRequest.setAttribute("message", "版塊信息錄入完成!");;
        httpServletRequest.setAttribute("locationFile",
                                        "<A HREF=\"javascript:history.back();\">返回</A>");;
        return (actionMapping.findForward("success"););;
    }

}