手把手搭建Java共享网盘
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：
- jdk 8
- intellij idea
- tomcat 8.5.40
- mysql 5.7
所用技术：
- jsp+servlet
- js+ajax
- layUi
- jdbc直连
项目访问地址
http://localhost:8090
项目结构
项目截图
- 注册
- 我的网盘
我的共享
![]()
回收站
![]()
会员充值
![]()
管理员-所有文件
![]()
管理员-共享申请
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 {
ListfileItemLists = 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 ListfindRetrieveListByOwnerId(int ownerId,int isDelete){
ListfileList = 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
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
