noticedao.java

功能是公安和学校的管理系统,用struts+hibernate+spring等匡架组成,在eclepse就能编译

package com.comingnet.bean;

import java.io.File;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.Statement;
import java.sql.Timestamp;
import java.text.SimpleDateFormat;
import java.util.ArrayList;

import com.comingnet.bean.NoticeAppFiles;


import com.db.DBUtils;
import com.db.KeyGenerator;

public class NoticeDAO {
	private Notice notice ;

	public Notice getNotice() {
		return notice;
	}

	public void setNotice(Notice notice) {
		this.notice = notice;
	}
	
	private String formatDate(Timestamp time){
		String formattedDate = "";
		if(time != null){
		    SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");   
		    formattedDate = formatter.format(time);
		}
	    return formattedDate;
	}
	
	public NoticeDAO(){
		notice = new Notice();
	}
	
	public boolean addNotice(Notice notice){
		boolean flag = false ;
		int count = 0 ;
		Connection conn=null;
		PreparedStatement stmt=null;
		try
		{
			//保存插入公告的id，作为插入附件时的外键
		   int noticeId = KeyGenerator.getInstance().getNextKey("m_notice");
		   conn=DBUtils.getConnection();
		   stmt=conn.prepareStatement("insert into m_notice(n_id, n_bt, n_nr, n_fbrzh, n_fbrxm, n_xxbh, n_xxmc, n_xszt,n_userclass) values(?,?,?,?,?,?,?,?,?)");
		   stmt.setInt(1,noticeId);
		   stmt.setString(2, notice.getN_bt());
		   stmt.setString(3, notice.getN_nr());
		   stmt.setString(4, notice.getN_fbrzh());
		   stmt.setString(5, notice.getN_fbrxm());
		   		   
		   stmt.setInt(6, notice.getN_xxbh());
		   stmt.setString(7, notice.getN_xxmc());
//		   stmt.setDate(8, new java.sql.Date(new Date().getTime()));//发布日期由数据库默认值设置为当前时间
		   stmt.setString(8, notice.getN_xszt());
		   stmt.setString(9,notice.getN_userclass()) ;
		   
		   stmt.executeUpdate();
		   DBUtils.closeStatement(stmt);
		   //添加附件表
		   ArrayList<NoticeAppFiles> files = notice.getFiles() ;
		   if(files != null){
			  for(int i=0; i<files.size(); i++){
				 stmt = conn.prepareStatement("insert into m_notice_appendix(na_id, n_id, na_oldname, na_newname) values (?,?,?,?)");
				 stmt.setInt(1, KeyGenerator.getInstance().getNextKey("m_notice_appendix"));
				 stmt.setInt(2, noticeId);
				 stmt.setString(3,files.get(i).getOldFilename());
				 stmt.setString(4, files.get(i).getNewFilename());
				 count=stmt.executeUpdate();
				 
				 DBUtils.closeStatement(stmt);
			  }
		   }		   
		}catch(Exception e)
		{
			System.out.println("NoticeDAO.addNotice-->"+e);
		}finally
		{
			DBUtils.closeStatement(stmt);
			DBUtils.closeConnection(conn);
		}
		if(count>0)
			flag = true ;
		return flag ;
	}
	
	//删除一个附件
	public boolean deleteFile(String webpath ,String filename){
		int count = 0 ;
		boolean flag = false ;
		File file = new  File(webpath+"notice\\uploadFile\\"+filename);
		if(file.exists()&&file.isFile()){
			file.delete() ;
		}

			//删除数据库纪录
			Connection conn=null;
			PreparedStatement stmt=null;
			try{				
				conn = DBUtils.getConnection();	
					stmt = conn.prepareStatement("delete m_notice_appendix where na_newname=?");
					stmt.setString(1, filename);
					count = stmt.executeUpdate();
					DBUtils.closeStatement(stmt);
			}
			catch(Exception e){
				System.out.println("NoticeDAO.deleteFile-->"+e);
				}
			finally{	
				DBUtils.closeStatement(stmt) ;
				DBUtils.closeConnection(conn);
			}
		if(count>0) flag = true ;
		return flag ;		
	}
	//删除所有的附件
	public boolean deleteAllFiles(String webpath, String[] files){
		int count = 0 ;
		boolean flag = false ;
		if(files != null){
			//删除文件
			for(int i=0; i<files.length; i++){
				File file = new File(webpath+"notice\\uploadFile\\"+files[i]);
				if(file.exists() && file.isFile()){
					file.delete();
				}
			}
			//删除数据库纪录
			Connection conn=null;
			PreparedStatement stmt=null;
			try{				
				conn = DBUtils.getConnection();	
				for(int i=0; i<files.length; i++){
					stmt = conn.prepareStatement("delete m_notice_appendix where na_newname=?");
					stmt.setString(1, files[i]);
					count = stmt.executeUpdate();
					DBUtils.closeStatement(stmt);
				}
			}
			catch(Exception e){
				System.out.println("NoticeDAO.deleFiles-->"+e);
				}
			finally{	
				DBUtils.closeStatement(stmt) ;
				DBUtils.closeConnection(conn);
			}
		}
		if(count>0) flag = true ;
		return flag ;
	}
	
	public boolean deleteNotice(int id,String webpath){
		boolean flag = false ;
		int count = 0 ;
		//查询附件表，并删除附件纪录
		Connection conn=null;
		PreparedStatement stmt=null;
		try
		{
		   conn=DBUtils.getConnection();
		   //删除文件
		   stmt=conn.prepareStatement("select na_newname from m_notice_appendix where n_id=?");
		   stmt.setInt(1, id);
		   ResultSet rs = null;
		   rs=stmt.executeQuery();
		   while(rs.next()){
			   String filename = rs.getString("na_newname");
			   filename = webpath+"notice\\uploadFile\\"+filename;
			   File file = new File(filename);
				if(file.exists() && file.isFile()){
					file.delete();
				}
		   }
		   DBUtils.closeResultSet(rs);
		   DBUtils.closeStatement(stmt);
		   //删除附件表纪录
		   stmt = conn.prepareStatement("delete m_notice_appendix where n_id=?");
		   stmt.setInt(1, id);
		   stmt.executeUpdate();
		   
		   DBUtils.closeStatement(stmt);
		   //删除公告表纪录
		   stmt = conn.prepareStatement("delete m_notice where n_id=?");
		   stmt.setInt(1, id);
		   count = stmt.executeUpdate();
		   DBUtils.closeStatement(stmt) ; 
		   }
		catch(Exception e)
		{
		   System.out.println("NoticeDAO.deleteNotice-->"+e);
		}
		finally
		{
		  DBUtils.closeStatement(stmt);
		  DBUtils.closeConnection(conn);
		}
		if (count>0) flag =true ;
		return  flag  ;
	}
	
	public boolean editNotice(Notice notice){
		boolean flag = false ;
		int count = 0 ;
//		ArrayList<NoticeAppFiles> nafList  ;
//		nafList  = notice.getFiles() ; 
//		NoticeAppFiles naf ;
		Connection conn=null;
		PreparedStatement stmt=null;
//		naf = notice.getFiles().get(0) ;
//		System.out.println("newname"+naf.getNewFilename()) ;
//		System.out.println("isFileflag"+naf.isFileflag()) ;
		
//		
//		//删除已经标记的附件
//		int size  = 0 ;
//		size = nafList.size(); 
//		
//		if(size >0){
//			for (int i = 0; i < size; i++) {
//				naf = notice.getFiles().get(i) ;
////				System.out.println("newname"+naf.getNewFilename()) ;
////				System.out.println("isFileflag"+naf.isFileflag()) ;
//				if(naf.isFileflag()){
//					try {
//						conn = DBUtils.getConnection() ;
//						stmt = conn.prepareStatement("delete m_notice_appendix where newFileName = ?") ;
//						stmt.setString(1,naf.getNewFilename()) ;
//						stmt.executeUpdate() ;
//						
//						DBUtils.closeStatement(stmt) ;
//					} catch (Exception e) {
//						System.out.println("NoticeDAO.editNotice-->" + e);
//					} finally {
//						DBUtils.closeStatement(stmt);
//						DBUtils.closeConnection(conn);
//					}
//				}
//			}
//		}
		
		try
		{
		   conn=DBUtils.getConnection();
		   stmt=conn.prepareStatement("update m_notice set n_bt=?, n_nr=?, n_xszt=? where n_id=?");
		   stmt.setString(1, notice.getN_bt());
		   stmt.setString(2, notice.getN_nr());
		   stmt.setString(3, notice.getN_xszt());
		   stmt.setInt(4, notice.getN_id());
		   count = stmt.executeUpdate();
		   
		   DBUtils.closeStatement(stmt) ;
		}
		catch(Exception e)
		{
		   System.out.println("NoticeDAO.editNotice-->错误错误错误错误"+e);
		}
		finally
		{
		  DBUtils.closeStatement(stmt);
		  DBUtils.closeConnection(conn);
		}
		if(count>0) flag = true ;
		return flag ;		
	}
	
	public Notice queryNoticeById(int id){
		Connection conn=null;
		PreparedStatement stmt=null;
		ResultSet rs=null; 
		try
		{
		   conn=DBUtils.getConnection();
		   stmt=conn.prepareStatement("select n_bt, n_nr, n_fbrzh, n_fbsj from m_notice where n_xszt=1 and n_id=?");
		   stmt.setInt(1, id);
		   rs=stmt.executeQuery();
		   if(rs.next())
		   {
		      String title = rs.getString("n_bt");
		      String content = rs.getString("n_nr");
		      String author = rs.getString("n_fbrzh");
		      String date = formatDate(rs.getTimestamp("n_fbsj"));		      
		      //设置Notice
		      notice.setN_bt(title);
		      notice.setN_nr(content);
		      notice.setN_fbrzh(author);
		      notice.setN_fbsj(date);
		     }
		   DBUtils.closeResultSet(rs) ;
		   DBUtils.closeStatement(stmt) ;
		}catch(Exception e)
		{
		   System.out.println("NoticeDAO.queryNoticeById"+e);
		}finally
		{
		  DBUtils.closeResultSet(rs);
		  DBUtils.closeStatement(stmt);
		  DBUtils.closeConnection(conn);
		}
		/*以上代码设置Notice在公告表中获取的信息，然后调用AppFilesDao中的获取附件的方法，
		  设置Notice的附件信息*/
		notice.setFiles(queryNoticeAllAppFilesById(id));
		return notice;
	}
	/**
	 * 根据公告id查询对应的附件
	 * @param id	附件对应的公告id
	 * @return	AppFiles[]	附件信息数组
	 */
	public ArrayList<NoticeAppFiles> queryNoticeAllAppFilesById(int id){
		ArrayList<NoticeAppFiles> files = new ArrayList<NoticeAppFiles>();
		Connection conn=null;
		PreparedStatement stmt=null;
		ResultSet rs=null; 
		try
		{
		   conn=DBUtils.getConnection();
		   stmt=conn.prepareStatement("select na_oldname, na_newname from m_notice_appendix where n_id=?");
		   stmt.setInt(1, id);
		   rs=stmt.executeQuery();
		   while(rs.next())
		   {
		      String oldFilename = rs.getString("na_oldname");
		      String newFilename = rs.getString("na_newname");      
		      //设置NoticeAppFiles
		      NoticeAppFiles file = new NoticeAppFiles();
		      file.setOldFilename(oldFilename);
		      file.setNewFilename(newFilename);
		      
		      files.add(file);
		   }
		   DBUtils.closeResultSet(rs) ;
		   DBUtils.closeStatement(stmt) ;
		}catch(Exception e)
		{
		   System.out.println("NoticeDAO.queryNoticeAppFilesById-->"+e);
		}finally
		{
		  DBUtils.closeResultSet(rs);
		  DBUtils.closeStatement(stmt);
		  DBUtils.closeConnection(conn);
		}
		return files;
	}
	
	/**
	 * 根据id值设置notice的详细属性，用于编辑notice
	 * @param id
	 * @return Notice
	 */
	public Notice getNoticeInfoById(int id){
		Connection conn=null;
		PreparedStatement stmt=null;
		ResultSet rs=null; 
		try
		{
		   conn=DBUtils.getConnection();
		   stmt=conn.prepareStatement("select * from m_notice where n_id=?");
		   stmt.setInt(1, id);
		   rs=stmt.executeQuery();
		   if(rs.next())
		   {
		      String title = rs.getString("n_bt");
		      String content = rs.getString("n_nr");
		      System.out.println(content);
		      String author = rs.getString("n_fbrzh");
		      String authorName = rs.getString("n_fbrxm");
		      int schoolId = rs.getInt("n_xxbh");
		      String schoolName = rs.getString("n_xxmc");
		      String date = formatDate(rs.getTimestamp("n_fbsj"));		      				
		      String flag = rs.getString("n_xszt");
		      //设置Notice
		      notice.setN_id(id);
		      notice.setN_bt(title);
		      notice.setN_nr(content);
		      notice.setN_fbrzh(author);
		      notice.setN_fbsj(date);
		      notice.setN_fbrxm(authorName);
		      notice.setN_xxbh(schoolId);
		      notice.setN_xxmc(schoolName);
		      notice.setN_xszt(flag);
		   }
		   DBUtils.closeResultSet(rs) ;
		   DBUtils.closeStatement(stmt) ;
		}catch(Exception e)
		{
		   System.out.println("NoticeDAO.getNoticeInfoById-->"+e);
		}finally
		{
		  DBUtils.closeResultSet(rs);
		  DBUtils.closeStatement(stmt);
		  DBUtils.closeConnection(conn);
		}
		/*以上代码设置Notice在公告表中获取的信息，然后调用queryNoticeAppFilesById获取附件的方法，
		  设置Notice的附件信息*/
		notice.setFiles(queryNoticeAllAppFilesById(id));
		return notice;
	}
	
	public ArrayList<Notice> queryAllNotice(){
		ArrayList<Notice> allNoticesList = null ;
		Notice notice = null ;
		NoticeAppFiles af = null ;
		
		Connection conn = null ;
		ResultSet rs_appFiles = null ;
		ResultSet rs_notice = null ;
		
		Statement stmt = null ;
		String sqlStr = "" ;
		
		int 	n_id;		//存储要修改的公告的id，更新公告数据时使用
		String n_bt;	//标题
		String n_nr;	//内容
		String n_fbrzh;	//发布人账户
		String n_fbsj;	//发布时间,存储格式化过后的时间
//		ArrayList<NoticeAppFiles> files;//附件
		ArrayList<NoticeAppFiles> fileList = null ;
		
		// 以下字段供添加公告使用
		String n_fbrxm; // 发布人姓名
		int n_xxbh; // 学校编号
		String n_xxmc; // 学校名称
		String n_xszt; // 显示状态 1－显示，0－不显示

		int na_id; // 自增id
		String oldFilename;
		String newFilename;
		boolean fileflag ;	 
		
		try {
			sqlStr = "select * from m_notice" ;
			conn = DBUtils.getConnection() ;
			stmt = conn.createStatement() ;
			rs_notice = stmt.executeQuery(sqlStr) ;
			while(rs_notice.next()){
				n_id = rs_notice.getInt("n_id") ;
				n_bt = rs_notice.getString("n_bt") ;
				n_nr = rs_notice.getString("n_nr") ;
				n_fbrzh = rs_notice.getString("n_fbrzh") ;
				n_fbsj = String.valueOf(rs_notice.getTime("n_fbsj")) ;
				n_fbrxm = rs_notice.getString("n_fbrxm") ;
				n_xxbh = rs_notice.getInt("n_xxbh") ;
				n_xxmc = rs_notice.getString("n_xxmc") ;
				n_xszt = rs_notice.getString("n_xszt") ;
				
				sqlStr = "select * from m_notice_appendix where n_id = "+n_id ;
				DBUtils.closeStatement(stmt) ;
				stmt = conn.createStatement() ;
				rs_appFiles = stmt.executeQuery(sqlStr) ;
				while(rs_appFiles.next()){
					na_id = rs_appFiles.getInt("na_id") ;
					oldFilename = rs_appFiles.getString("oldFilename") ;
					newFilename = rs_appFiles.getString("newFileName") ;
					if("1".equals(n_xszt)) fileflag = true ;
					else fileflag = false ;
					af = new NoticeAppFiles ();
					
					
					af.setNewFilename(newFilename) ;
					af.setOldFilename(oldFilename) ;
					af.setFileflag(fileflag) ;
					fileList.add(af) ;
				}
				notice.setFiles(fileList) ;
				notice.setN_bt(n_bt) ;
				notice.setN_fbrxm(n_fbrxm) ;
				notice.setN_fbrzh(n_fbrzh) ;
				notice.setN_fbsj(n_fbsj) ;
				notice.setN_id(n_id) ;
				notice.setN_nr(n_nr) ;
				notice.setN_xszt(n_xszt) ;
				notice.setN_xxbh(n_xxbh) ;
				notice.setN_xxmc(n_xxmc) ;
				
				allNoticesList.add(notice) ;
			}
			DBUtils.closeResultSet(rs_appFiles) ;
			DBUtils.closeResultSet(rs_notice) ;
			DBUtils.closeStatement(stmt) ;
			DBUtils.closeConnection(conn) ;
		} catch (Exception e) {
			System.out.println("NoticeDAO.queryAllNotice-->"+e)  ;
		}finally{
			DBUtils.closeResultSet(rs_appFiles) ;
			DBUtils.closeResultSet(rs_notice) ;
			DBUtils.closeStatement(stmt) ;
			DBUtils.closeConnection(conn) ;
		}		
		
		return allNoticesList ;
	}
}