手把手搭建Java共享网盘

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项目介绍

在线共享网盘采用jsp+servlet搭建项目结构实现共享网盘，项目分为管理员，普通用户和付费用户三种角色，根据不同角色控制不同权限，实现不同用户对个人文件文件，所有文件，共享文件的增删改查操作。

项目适用人群

正在做毕设的学生，或者需要项目实战练习的Java学习者

开发环境：

1. jdk 8
2. intellij idea
3. tomcat 8.5.40
4. mysql 5.7

所用技术：

1. jsp+servlet
2. js+ajax
3. layUi
4. jdbc直连

项目访问地址

http://localhost:8090

项目结构

项目结构

项目截图

• 注册

注册

• 我的网盘

  
  
  

  我的网盘.png

• 我的共享

  
  
  

  我的共享.png

• 回收站

  
  
  

  回收站.png

• 会员充值

  
  
  

  会员充值.png

• 管理员-所有文件

  
  
  

  管理员-所有文件.png

• 管理员-共享申请

  
  
  

  管理员-共享申请列表.png

关键代码:

1.初始化工作

//数据库连接初始化
public class DBInfo {
    String url = null;
    String username = null;
    String password = null;
    String driverClass = null;
    
    private static DBInfo db = new DBInfo();

    public static DBInfo getInstance(){
        return db;
    }
    
    private DBInfo() {
        InputStream in = this.getClass().getClassLoader().getResourceAsStream("db.properties");
        Properties pp = new Properties();
        try {
            pp.load(in);
            url = pp.getProperty("jdbc.url");
            username = pp.getProperty("jdbc.username");
            password = pp.getProperty("jdbc.password");
            driverClass = pp.getProperty("jdbc.driver");
            
            Class.forName(driverClass);
        } catch (Exception e) {
            e.printStackTrace();
        }finally{
            try {
                in.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    public Connection getConnection(){
        Connection conn = null;
        try {
            conn = DriverManager.getConnection(url, username, password);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return conn;
    }
}
//上传资源初始化
public void init() throws ServletException {
    super.init();
    //servlet启动时  ，读取配置文件中关于上传的信息
    InputStream in = this.getClass().getClassLoader().getResourceAsStream("ini.properties");
    Properties pp = new Properties();
    try {
        pp.load(in);
        UPLOAD_ROOT_PATH = pp.getProperty("upload.path");
        String tmpPath = pp.getProperty("tmp.path");
        //配置上传临时目录
        factory = new DiskFileItemFactory(1024*1024*10,new File(tmpPath));
        stu = new ServletFileUpload(factory);
    } catch (Exception e) {
        e.printStackTrace();
    }finally{
        try {
            in.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

2.资源上传

//前端JSP代码

        

            
            

                

                    

                        ×
                        
上传文件
                    
                    

                        
                    
                    

                        
                            关闭
                        
                        
                    
                
        
    
//后端入库处理
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws   IOException {
    User user = (User) request.getSession().getAttribute(Const.SESSION_USER);
    String from="";
    try {
        List fileItemLists = stu.parseRequest(request);
        for(FileItem fileItem : fileItemLists){
            if(fileItem.isFormField()){
                from = fileItem.getString();
            }else{
                //上传文件名
                String fileName = fileItem.getName();
                String oldfilename = fileItem.getName();
                int index = fileName.lastIndexOf("\\");
                if(index != -1) {
                    fileName = fileName.substring(index+1);
                }
                String root = UPLOAD_ROOT_PATH+user.getUsername();
                //获取文件大小
                long size = fileItem.getSize();
                String sizeString = StringUtil.computeSize(size);
                Timestamp upTime = new Timestamp(new Date().getTime());
                File file = new File(root,fileName);

                //解决文件同名
                int cnt = 1;
                while(file.exists()){
                    StringBuffer sb = new StringBuffer(fileName);
                    sb.insert(sb.lastIndexOf("."), "("+cnt+")");
                    file = new File(root,sb.toString());
                    cnt++;
                }
                //文件路径是否存在
                if(!file.getParentFile().exists()){
                    file.getParentFile().mkdirs();
                }
                try {
                    fileItem.write(file);
                    //上传成功，数据库保存记录
                    UserFile userFile = new UserFile();
                    userFile.setCreateTime(upTime);
                    userFile.setFilename(file.getName());
                    userFile.setFilename(file.getName());
                    userFile.setFileSize(sizeString);
                    userFile.setIsShared(0);
                    userFile.setOwnerId(user.getId());
                    userFile.setPath(file.getAbsolutePath());
                    userFile.setOldfilename(oldfilename);
                    userFileDao.save(userFile);
                    response.sendRedirect(from+"?action=mydisk");
                } catch (Exception e) {
                    e.printStackTrace();
                    response.getWriter().print("上传出错");
                }
            }
        }
    } catch (FileUploadException e) {
        e.printStackTrace();
        response.setContentType("text/html; charset=utf8");
        response.getWriter().print("上传出错!!");
    }
}

3.检索重复上传的资源

//这里上传在上面上传资源时候，将保存原始资源名字
public List findRetrieveListByOwnerId(int ownerId,int isDelete){
    List fileList = new ArrayList();
    Connection conn = db.getConnection();
    PreparedStatement ps = null;
    ResultSet rs = null;
    UserFile userFile = null;
    String sql="select * from file where oldfilename in ( " +
            " select a.oldfilename from (select oldfilename,count(id) counts from file GROUP BY oldfilename  HAVING counts>1) a" +
            " ) and  ownerid=? and isDelete=?";
    ps = conn.prepareStatement(sql);
    ps.setInt(1, ownerId);
    ps.setInt(2, isDelete);
    rs = ps.executeQuery();
    while(rs.next()){
        userFile = new UserFile();
        userFile.setId(rs.getInt(1));
        userFile.setFilename(rs.getString(2));
        userFile.setPath(rs.getString(3));
        userFile.setCreateTime(rs.getTimestamp(4));
        userFile.setIsShared(rs.getInt(5));
        userFile.setOwnerId(rs.getInt(6));
        userFile.setFileSize(rs.getString(7));
        userFile.setCounts(rs.getInt(8));
        userFile.setSharedReason(rs.getString("SharedReason"));
        userFile.setSharedTime(rs.getString("SharedTime"));

        fileList.add(userFile);
    }
    return fileList;
}

4.平台会员充值

//前端jsp代码

    

        <%@include file="common/nav.jsp" %>
        

            

        

            
以下是微信付款码，扫码即可支付
            

                

                    

                        

                            
                        
                        

                            
                        
                    
                    

                        ${msgSuccess }
                        ${msgFail }
                    
                
            
            

                
                

                  
                
              
        
    
        
    

//js实现,采用定时跳转模拟真实用户支付流程，后续进行改动用户会员状态
var test1 = setTimeout(function(){
    $("#div1").css("display","none");
    $("#div2").css("display","block");
    layer.msg('恭喜您，完成扫码支付！', {time: 4000, icon:6},function () {
        window.location.href="user?action=doTopUp";
    });
    clearTimeout(test1);
},5000);
//后端代码
public void doTopUp(User user) {
    Connection conn = db.getConnection();
    PreparedStatement ps = null;
    ResultSet rs = null;
    try {
        //members=1为会员状态
        ps = conn.prepareStatement("update user set members = 1 where id = ?");
        ps.setInt(1, user.getId());
        ps.execute();
    } catch (SQLException e) {
        e.printStackTrace();
    } finally {
        try {
            if (conn != null)
                conn.close();
            if (ps != null)
                ps.close();
            if (rs != null)
                rs.close();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}

项目后续

其他ssh，ssm，springboot版本后续迭代更新，持续关注