如何用react实现仿QQ空间拖拽模块

Posted 2023-05-03

tags:

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参考技术A 　　这篇文章主要介绍了完美实现仿QQ空间回复特效，非常的实用，附上实例代码给大家，有需要的小伙伴参考下吧。　　回复是个很常见的东西，但是各大网站实现的方式却不尽相同。大体上有两种方式　　1. 　　像优酷这种最常见，在输入框中@要回复的人，这种方式下，用户可以修改@。　　新浪微博则是在这个基础上，弹出好友菜单。这种方式的好处是不需要任何js,css处理兼容。　　2. 　　像qq空间这种，对回复的人整个删除。本屌感觉这种方式比较好，但这种方式有些兼容性上的细节，这个后面会详细说明。　　事实上，qq空间的这种实现在效果上是兼容了ie和现代浏览器的，做的非常好。上面是chrome 　　ie8 　　ie7 　　ie6就不上图片了，太卡了，都懂得，最后本屌会附上最终例子的，当然也兼容ie6。　　下面就说说怎么实现的。　　先看看qq空间是怎么做的　　chrome 　　上面可以看到，qq空间是在button中加上文字，这样在删除的时候对被回复的用户名就能整个删除了。　　不过这样做还不够，首先是样式，需要把button设置成inline-block，　　消除button默认的透明背景，边框，当然还有padding,margin设为0 　　复制代码代码如下: 　　button border: 0; background:none; 　　这时在ie6,7中插入会发现，似乎还存在padding,而且还很大　　所以还需要加上overflow: visible; 　　另外属性contenteditable设置成为false,否则光标会跳到button里面，　　然后在ie8下会发现，输入的时候如果有回车，然后在依次删除的过程中，会发现button标签删不掉，光标会跑到button标签前面，而且再次按右光标键或用鼠标点击button标签右边都无法让光标跑到button标签右边。事实上，qq空间在ie8中也有这个问题　　ie8 　　而在ie6,7下，就没有这个问题　　ie7 　　ie6 　　这里针对ie8需要对文本框绑定keydown事件回调check_comment,对ie6,7绑定了也没有问题，这里就统一的对ie绑定。　　? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 function getPositionForTextArea(ctrl) //获取光标位置 var CaretPos = 0; if(document.selection) ctrl.focus(); var Sel = document.selection.createRange(); var Sel2 = Sel.duplicate(); Sel2.moveToElementText(ctrl); var CaretPos = -1; while(Sel2.inRange(Sel)) Sel2.moveStart('character'); CaretPos++; else if(ctrl.selectionStart ctrl.selectionStart == '0') CaretPos = ctrl.selectionStart; return (CaretPos); vm.check_comment=function(e,i) var a=getPositionForTextArea($('reply'+i)); if(e.keyCode==8&&a<3) var pat = new RegExp("^<p><button .*?>.*?</button> </p>$",'i'); if(pat.test(this.innerhtml)) this.innerHTML=''; ; 　　光标位置<3表明光标前面就是button标签了，这时就可以清空输入框了。注意这里为了严谨，用正则表达式验证是不是button标签. 　　另外在正则表达式中button标签外包裹p标签，是因为ie在按回车换行时，会默认自动对前面的行包裹p标签。当然，一开始在输入框也要在button标签外包裹p标签。　　题外话　　qq空间在ff上用的是img标签　　之前一直以为qq空间在现代浏览器上统一用的是img标签，写的时候才发现在chrome中用的是button标签，于是就在chrome下试了一下插入img标签，发现怎么也弄不掉边框，而且删除的时候，绑定中光标位置的判断也会和ie不一致，因为现代浏览器换行默认插入 ,于是索性对chrome也用button标签。　　另外在我的例子中，ff中插入button标签的话，输入框不容易获得焦点。本屌也懒得去改了,仍然是在ff中插入img标签，对应的keydown回调　　? 1 2 3 4 if(!!-[1,]&&e.keyCode==8&&$('reply'+i).childNodes.length==2)//ff this.innerHTML=''; return; 　　只用判断输入框的子节点个数就可以了。　　最终效果　　chrome 　　ff 　　ie8 　　ie7 　　ie6 　　附上例子下载　　以上所述就是本文的全部内容了，希望大家能够喜欢。

jsp实现仿QQ空间新建多个相册名称，向相册中添加照片

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<AlbumPOJO> findAllAlbum(int id);
	public List<PhotoPOJO> 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<AlbumPOJO> findAllAlbum(int id) {
		List<AlbumPOJO> list= new ArrayList<AlbumPOJO>();
		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<PhotoPOJO> findAllPhoto(int aid) {
		List<PhotoPOJO> list= new ArrayList<PhotoPOJO>();
		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) {
		this.id = id;
	}
	public String getP_name() {
		return p_name;
	}
	public void setP_name(String p_name) {
		this.p_name = p_name;
	}
	public String getP_url() {
		return p_url;
	}
	public void setP_url(String p_url) {
		this.p_url = p_url;
	}
	public int getP_albumId() {
		return p_albumId;
	}
	public void setP_albumId(int p_albumId) {
		this.p_albumId = p_albumId;
	}

	public PhotoPOJO(int id, String p_name, String p_url, int p_albumId) {
		super();
		this.id = id;
		this.p_name = p_name;
		this.p_url = p_url;
		this.p_albumId = p_albumId;
	}
	public PhotoPOJO(String p_name, String p_url, int p_albumId) {
		this.p_name = p_name;
		this.p_url = p_url;
		this.p_albumId = p_albumId;
	}
	public PhotoPOJO() {
		super();
		// TODO Auto-generated constructor stub
	}
	
}

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ page import="cn.jvsun.DAO.Impl.*" %>
<%@ page import="cn.jvsun.POJO.*" %>
<%@ page import="cn.jvsun.DAO.*" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>"> 
    <title>login</title>
  </head>
  <body>
  <%
  	request.setCharacterEncoding("utf-8");
  	String action=request.getParameter("action");
  	UpDAO ud=new UpDAOImpl();
  	
  	String username=request.getParameter("username");
  	String password=request.getParameter("password");
  	UserPOJO pojo=ud.login(username, password);
  	if("log".equals(action)){
  		if(pojo==null){
  			%>
  			<h1>登录失败</h1>
  			<%
  		}else{
  			request.getSession().setAttribute("username", username);
  			request.getSession().setAttribute("userid", pojo.getId());
  			response.sendRedirect("index.jsp");
  		}
  	}
  %>
    <form action="login.jsp?action=log" method="post">
    	<input type="text" name="username" placeholder="请输入用户名"/>
    	<input type="password" name="password" placeholder="请输入密码"/>
    	<input type="submit"/>
    </form>
  </body>
</html>

index.jsp实现显示相册

代码如下：

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ page import="cn.jvsun.DAO.Impl.*" %>
<%@ page import="cn.jvsun.POJO.*" %>
<%@ page import="cn.jvsun.DAO.*" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    <title>person message</title>
  </head>
  
  <body>
    <center>相册界面</center>
   	 当前用户：<%=request.getSession().getAttribute("username")%> <br>
    <a href="cre.jsp">去创建相册</a><br>
    	我的所有相册：<br>
    <%
    int userid=(Integer)request.getSession().getAttribute("userid");
	UpDAO dao=new UpDAOImpl();
  	List<AlbumPOJO> list=dao.findAllAlbum(userid);
  	for(AlbumPOJO pojo:list){
  %>
  <tr>
  	<a>相册id:</a><td><%=pojo.getId() %></td>
  	<a>相册名称:</a><td><%=pojo.getA_name() %></td>
  	<a>创建者id:</a><td><%=pojo.getUser_id() %></td>
  	<td><a href="up.jsp?aid=<%=pojo.getId() %>">添加照片</a></td>
  	<td><a href="show.jsp?phid=<%=pojo.getId() %>">查看照片</a></td>
  	<td><a href="del.jsp?aid=<%=pojo.getId() %>">删除相册</a></td>
  </tr><br>
  <%
  	}
  %>
  
  </body>
</html>

cre.jsp创建相册

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ page import="cn.jvsun.DAO.Impl.*" %>
<%@ page import="cn.jvsun.POJO.*" %>
<%@ page import="cn.jvsun.DAO.*" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    <title>up photo</title>
  </head>
  <body>
  <%
  	request.setCharacterEncoding("utf-8");
	String action=request.getParameter("action");
	UpDAO ud=new UpDAOImpl();
	String toCre=request.getParameter("cre");
	int userId=(Integer)request.getSession().getAttribute("userid");
	if("cre".equals(action)){
		AlbumPOJO ap=new AlbumPOJO(toCre,userId);
		int aNum=ud.creAlbum(ap);
		if(aNum!=-1){
			response.sendRedirect("index.jsp");
		}else{
			%>
			<h1>创建相册失败</h1>
			<%
		}
	}
  %>
	<form action="cre.jsp?action=cre" method="post">
		<input type="text" name="cre" placeholder="请输入您要创建的相册名称"/>
		<input type="submit" value="确定">
	</form>
  </body>
</html>

up.jsp上传照片

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ page import="cn.jvsun.DAO.Impl.*" %>
<%@ page import="cn.jvsun.POJO.*" %>
<%@ page import="cn.jvsun.DAO.*" %>
<%@ page import="cn.jvsun.tools.*" %>
<%@page import="org.lxh.smart.*" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    <title>上传照片</title>
  </head>
  
  <body>
	<%
		int aid=Integer.parseInt(request.getParameter("aid"));
	%>
	<form action="upCheck.jsp" method="post" enctype="multipart/form-data">
		<input type="hidden" name="aid" value="<%=aid %>"/>
		<input type="file" name="photo"/>
		<input type="submit" value="确认上传"/>
	</form>
  </body>
</html>

upCheck.jsp上传照片的处理页

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ page import="cn.jvsun.DAO.Impl.*" %>
<%@ page import="cn.jvsun.POJO.*" %>
<%@ page import="cn.jvsun.DAO.*" %>
<%@ page import="cn.jvsun.tools.*" %>
<%@page import="org.lxh.smart.*" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title></title>
  </head>
  
  <body>
    <%
		String ip = request.getRemoteAddr();	
		ip = ip.replaceAll(":","");
		PhotoName pn=new PhotoName(ip);
		String pName = pn.getPhotoName();//照片名字，是由IP加当前时间组成
		SmartUpload smartupload = new SmartUpload();//实例化上传操作的对象
		
		//初始化上传文件
		smartupload.initialize(pageContext);
		//准备上传
		smartupload.upload();
		int albumId=Integer.parseInt(smartupload.getRequest().getParameter("aid"));
		//取得文件的后缀
		String endName = smartupload.getFiles().getFile(0).getFileExt();
		//文件保存的路径
		/*String p_url = getServletContext().getRealPath("/")+
						"file/"+pName+"."+endName;*/
		String p_url="K:/workspace/Xiangce/WebRoot/file/"+pName+"."+endName;
		//保存文件
		smartupload.getFiles().getFile(0).saveAs(p_url);
		UpDAO ad=new UpDAOImpl();
		PhotoPOJO pojo=new PhotoPOJO(pName+"."+endName,p_url,albumId);
		int photoNum=ad.upPhoto(pojo);
		if(photoNum != -1){
			request.getSession().setAttribute("phid", albumId);
			response.sendRedirect("show.jsp");
			} else {
	%>
	上传失败
	<%
			}
	%>
  </body>
</html>

show.jsp显示照片及信息页：

代码如下：

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ page import="cn.jvsun.DAO.Impl.*" %>
<%@ page import="cn.jvsun.POJO.*" %>
<%@ page import="cn.jvsun.DAO.*" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    <title>My JSP 'show.jsp' starting page</title>
  </head>
 
  <body>
     <center>相册界面</center>
   	 当前用户：<%=request.getSession().getAttribute("username")%> <br>
   	 <%
    int phid=(Integer)request.getSession().getAttribute("phid");
	UpDAO dao=new UpDAOImpl();
  	List<PhotoPOJO> list=dao.findAllPhoto(phid);
  	for(PhotoPOJO pojo:list){
  %>
  <tr>
  	<a>照片id:</a><td><%=pojo.getId() %></td><br>
  	<a>照片名称:</a><td><%=pojo.getP_name() %></td><br>
  	<a>照片路径:</a><td><%=pojo.getP_url() %></td><br>
  	<a>照片所属相册名称:</a><td><%=pojo.getP_albumId() %></td><br>
  	<td><img src="<%=path%>/file/<%=pojo.getP_name() %>" width="100" height="100"/></td>
  	<a href="photo_del.jsp?pid=<%=pojo.getId() %>">删除照片:</a></td><br>
  </tr><br>
  <%} %>
  </body>
</html>

photo_del.jsp删除照片

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ page import="cn.jvsun.DAO.Impl.*" %>
<%@ page import="cn.jvsun.POJO.*" %>
<%@ page import="cn.jvsun.DAO.*" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>del</title>
  </head>
  
  <body>
    <%
	int pid=Integer.parseInt(request.getParameter("pid"));
    int result=0;
	UpDAO dao=new UpDAOImpl();
	result=dao.delPhoto(pid);
	if(result==1){
		out.println("<script>alert('删除成功');window.location.href('show.jsp');</script>");
	}else{
		out.println("<script>alert('出错了');window.location.href('show.jsp');</script>");
	}
	%>
	
  </body>
</html>

del.jsp删除相册

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ page import="cn.jvsun.DAO.Impl.*" %>
<%@ page import="cn.jvsun.POJO.*" %>
<%@ page import="cn.jvsun.DAO.*" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>del</title>
  </head>
  
  <body>
    <%
	int aid=Integer.parseInt(request.getParameter("aid"));
    int result=0;
	UpDAO dao=new UpDAOImpl();
	result=dao.delAlbum(aid);
	if(result==1){
		out.println("<script>alert('删除成功');window.location.href('index.jsp');</script>");
	}else{
		out.println("<script>alert('删除失败，请先把相册中的照片删掉');window.location.href('index.jsp');</script>");
	}
	%>
	
  </body>
</html>

数据库的建表语句：

-- Create table
create table USERINFO
(
  ID       NUMBER,
  USERNAME VARCHAR2(30),
  PASSWORD VARCHAR2(30)
)
tablespace USERS
  pctfree 10
  initrans 1
  maxtrans 255
  storage
  (
    initial 64
    minextents 1
    maxextents unlimited
  );
-- Create/Recreate primary, unique and foreign key constraints 
alter table USERINFO
  add constraint PID primary key (ID)
  disable;
--上传者
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-- Create table
create table ALBUM
(
  ID      NUMBER not null,
  A_NAME  VARCHAR2(30),
  USER_ID NUMBER
)
tablespace USERS
  pctfree 10
  initrans 1
  maxtrans 255
  storage
  (
    initial 64
    minextents 1
    maxextents unlimited
  );
-- Create/Recreate primary, unique and foreign key constraints 
alter table ALBUM
  add constraint AL_PID primary key (ID)
  using index 
  tablespace USERS
  pctfree 10
  initrans 2
  maxtrans 255
  storage
  (
    initial 64K
    minextents 1
    maxextents unlimited
  );
alter table ALBUM
  add constraint USERID foreign key (USER_ID)
  references USERINFO (ID)
  disable;
--相册表
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-- Create table
create table PHOTO
(
  ID        NUMBER,
  P_NAME    VARCHAR2(30),
  P_URL     VARCHAR2(50),
  P_ALBUMID NUMBER(30)
)
tablespace USERS
  pctfree 10
  initrans 1
  maxtrans 255
  storage
  (
    initial 64
    minextents 1
    maxextents unlimited
  );
-- Create/Recreate primary, unique and foreign key constraints 
alter table PHOTO
  add constraint ALB_ID foreign key (P_ALBUMID)
  references ALBUM (ID);
--相片表

好了，所有代码就写完了，切记，需要smartupload.jar包，没有的童鞋可以去下载：http://download.csdn.net/detail/weixin_36380516/9807953

不积硅步无以至千里，努力！

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