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jsp实现仿QQ空间新建多个相册名称并向相册中添加照片功能_JSP编程_
2023-05-25
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简介 jsp实现仿QQ空间新建多个相册名称并向相册中添加照片功能_JSP编程_
工具:Eclipse,Oracle,smartupload.jar;语言:jsp,Java;数据存储:Oracle。
实现功能介绍:
主要是新建相册,可以建多个相册,在相册中添加多张照片,删除照片,删除相册,当相册下有照片时先删除照片才能删除相册。
因为每个相册和照片要有所属人,所以顺带有登录功能。
声明:只是后端实现代码,前台无任何样式,代码测试可行,仅供参考。
代码:
数据库连接帮助类:
public class JDBCHelper { public static final String DRIVER = "oracle.jdbc.driver.OracleDriver"; public static final String URL = "jdbc:oracle:thin:@localhost:1521:xxxx"; public static final String DBNAME = "scott"; public static final String PASSWORD = "xxxx"; public static Connection getConn() throws Exception{ Class.forName(DRIVER); Connection conn = DriverManager.getConnection(URL, DBNAME, PASSWORD); return conn; } } 图片上传时,要修改图片名称,防止上传重名图片将上一张覆盖,这里的做法是将图片名改为由用户ID和精确到毫秒的时间组成,修改图片名的帮助类:
public class PhotoName { private String ip; public PhotoName(String ip) { super(); this.ip = ip; } public String getIp() { return ip; } public void setIp(String ip) { this.ip = ip; } public String getTime(){ Date date = new Date(); DateFormat df = new SimpleDateFormat("yyyyMMddHHmmssSSS"); return df.format(date); } public String getPhotoName(){ return this.ip + this.getTime(); } } 实现所有这些的接口类:
public interface UpDAO { /** * 创建相册名称 * */ public int creAlbum(AlbumPOJO ap); /** *显示所创建的所有相册名称 */ public List findAllAlbum(int id); public List findAllPhoto(int id); /** * 上传照片 */ public int upPhoto(PhotoPOJO pp); /** * 删除相册 * @param id 相册id * @return */ public int delAlbum(int id); /** * 删除照片 * @param id 照片id * @return */ public int delPhoto(int id); /** * 登录 * @param username * @param password * @return */ public UserPOJO login(String username,String password); } 接口的具体实现类:
public class UpDAOImpl implements UpDAO { /* (non-Javadoc) * @see cn.jvsun.DAO.UpDAO#creAlbum(cn.jvsun.POJO.AlbumPOJO) * 创建相册名称 */ public int creAlbum(AlbumPOJO ap) { int albumNum=this.getAlbumNum(); Connection conn = null; PreparedStatement pstate = null; try { conn=JDBCHelper.getConn(); conn.setAutoCommit(false); String sql="insert into album(id,a_name,user_id)values(?,?,?)"; pstate = conn.prepareStatement(sql); pstate.setInt(1, albumNum); pstate.setString(2,ap.getA_name()); pstate.setInt(3, ap.getUser_id()); pstate.execute(); conn.commit(); } catch (Exception e) { e.printStackTrace(); try { conn.rollback();//出问题就撤回,全不提交 } catch (SQLException e1) { e1.printStackTrace(); } }finally{ try { pstate.close(); conn.close(); } catch (SQLException e) { e.printStackTrace(); } } return albumNum; } /* (non-Javadoc) * @see cn.jvsun.DAO.UpDAO#upPhoto(java.lang.String, java.lang.String, int) * 上传照片 */ public int upPhoto(PhotoPOJO pp) { int pNum=this.getPhotoNum(); Connection conn = null; PreparedStatement pstate = null; try { conn=JDBCHelper.getConn(); conn.setAutoCommit(false); String sql="insert into photo(id,p_name,p_url,p_albumid)values(?,?,?,?)"; pstate = conn.prepareStatement(sql); pstate.setInt(1, pNum); pstate.setString(2,pp.getP_name()); pstate.setString(3, pp.getP_url()); pstate.setInt(4, pp.getP_albumId()); pstate.execute(); conn.commit(); } catch (Exception e) { e.printStackTrace(); try { conn.rollback();//出问题就撤回,全不提交 } catch (SQLException e1) { e1.printStackTrace(); } }finally{ try { pstate.close(); conn.close(); } catch (SQLException e) { e.printStackTrace(); } } return pNum; } /* (non-Javadoc) * @see cn.jvsun.DAO.UpDAO#delAlbum(int) * 删除相册 */ public int delAlbum(int id) { int result=0; Connection conn = null; PreparedStatement pstate = null; String sql="delete from album where id="+id+""; try { conn=JDBCHelper.getConn(); pstate = conn.prepareStatement(sql); result=pstate.executeUpdate(); } catch (SQLException e) { e.printStackTrace(); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); }finally{ try { pstate.close(); conn.close(); } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); } } return result; } /* (non-Javadoc) * @see cn.jvsun.DAO.UpDAO#delPhoto(int) * 删除照片 */ public int delPhoto(int id) { int result=0; Connection conn = null; PreparedStatement pstate = null; String sql="delete from photo where id="+id+""; try { conn=JDBCHelper.getConn(); pstate = conn.prepareStatement(sql); result=pstate.executeUpdate(); } catch (SQLException e) { e.printStackTrace(); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); }finally{ try { pstate.close(); conn.close(); } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); } } return result; } /* (non-Javadoc) * @see cn.jvsun.DAO.UpDAO#login(java.lang.String, java.lang.String) * 用户登录 */ public UserPOJO login(String username, String password) { UserPOJO user=null; Connection conn = null; PreparedStatement pstate = null; ResultSet res = null; try { conn=JDBCHelper.getConn(); String sql="select id,username from userinfo where username=? and password=?"; pstate = conn.prepareStatement(sql); pstate.setString(1, username); pstate.setString(2, password); res = pstate.executeQuery(); while(res.next()){ user=new UserPOJO(res.getInt(1),username,null); } } catch (Exception e) { e.printStackTrace(); }finally{ try { res.close(); pstate.close(); conn.close(); } catch (SQLException e) { e.printStackTrace(); } } return user; } /** * 相册序列号 */ public int getAlbumNum(){ int albumNum=-1; Connection conn = null; PreparedStatement pstate = null; ResultSet res = null; try { conn=JDBCHelper.getConn(); String sql="select aid.nextval from dual"; pstate=conn.prepareStatement(sql); res=pstate.executeQuery(); while(res.next()){ albumNum=res.getInt(1); } } catch (Exception e) { e.printStackTrace(); }finally{ try { res.close(); pstate.close(); conn.close(); } catch (SQLException e) { e.printStackTrace(); } } return albumNum; } /** *照片序列号 */ public int getPhotoNum(){ int photoNum=-1; Connection conn = null; PreparedStatement pstate = null; ResultSet res = null; try { conn=JDBCHelper.getConn(); String sql="select pid.nextval from dual"; pstate=conn.prepareStatement(sql); res=pstate.executeQuery(); while(res.next()){ photoNum=res.getInt(1); } } catch (Exception e) { e.printStackTrace(); }finally{ try { res.close(); pstate.close(); conn.close(); } catch (SQLException e) { e.printStackTrace(); } } return photoNum; } /* (non-Javadoc) * @see cn.jvsun.DAO.UpDAO#findAll() * 显示所创建的相册名 */ public List findAllAlbum(int id) { List list= new ArrayList(); Connection conn = null; PreparedStatement pstate = null; ResultSet res = null; try { conn=JDBCHelper.getConn(); String sql="select id,a_name,user_id from album where user_id=?"; pstate = conn.prepareStatement(sql); pstate.setInt(1, id); res = pstate.executeQuery(); while(res.next()){ AlbumPOJO ap=new AlbumPOJO(res.getInt(1),res.getString(2),res.getInt(3)); list.add(ap); } } catch (Exception e) { e.printStackTrace(); }finally{ try { res.close(); pstate.close(); conn.close(); } catch (SQLException e) { e.printStackTrace(); } } return list; } /* (non-Javadoc) * @see cn.jvsun.DAO.UpDAO#findAllPhoto(int) * 显示照片 */ public List findAllPhoto(int aid) { List list= new ArrayList(); Connection conn = null; PreparedStatement pstate = null; ResultSet res = null; try { conn=JDBCHelper.getConn(); String sql="select id,p_name,p_url from photo where P_ALBUMID=?"; pstate = conn.prepareStatement(sql); pstate.setInt(1, aid); res = pstate.executeQuery(); while(res.next()){ PhotoPOJO pojo=new PhotoPOJO(res.getInt(1),res.getString(2),res.getString(3), aid); list.add(pojo); } } catch (Exception e) { e.printStackTrace(); }finally{ try { res.close(); pstate.close(); conn.close(); } catch (SQLException e) { e.printStackTrace(); } } return list; } } 用户,相册,照片三个POJO类:
/** * 用户实体类 * */ public class UserPOJO implements Serializable{ private static final long serialVersionUID = 7554548269035753256L; private int id; private String username; private String password; public int getId() { return id; } public void setId(int id) { this.id = id; } 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 UserPOJO(int id, String username, String password) { super(); this.id = id; this.username = username; this.password = password; } public UserPOJO(String username, String password) { this.username = username; this.password = password; } public UserPOJO() { super(); // TODO Auto-generated constructor stub } } /** * 相册实体类 * */ public class AlbumPOJO implements Serializable{ private int id; private String a_name; private int user_id; public int getId() { return id; } public void setId(int id) { this.id = id; } public String getA_name() { return a_name; } public void setA_name(String a_name) { this.a_name = a_name; } public int getUser_id() { return user_id; } public void setUser_id(int user_id) { this.user_id = user_id; } public AlbumPOJO(int id, String a_name, int user_id) { super(); this.id = id; this.a_name = a_name; this.user_id = user_id; } public AlbumPOJO(String a_name, int user_id) { this.a_name = a_name; this.user_id = user_id; } public AlbumPOJO() { super(); // TODO Auto-generated constructor stub } } /** *照片实体类 * */ public class PhotoPOJO implements Serializable{ private static final long serialVersionUID = 5937149639009957458L; private int id; private String p_name; private String p_url; private int p_albumId; public int getId() { return id; } public void setId(int id) { thi
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