Project Introduction
The online sharing network disk adopts jsp+servlet to build the project structure to realize the sharing network disk. The project is divided into three roles: administrator, ordinary user and paid user. Different permissions are controlled according to different roles, so that different users can share personal files and all files. Add, delete, modify and check files.
Applicable people
Students who are doing a complete set of projects, or Java learners who need practical project practice
Development environment:
- jdk 8
- intellij idea
- tomcat 8.5.40
- mysql 5.7
Technology used:
- jsp+servlet
- js+ajax
- layUi
- jdbc direct connection
Project visit address
http://localhost:8090
Project structure
Project screenshot
- registered
- My network disk
- My share
- Recycle bin
- Member recharge
- Administrator-all files
- Admin-Share Request
Key code:
1. Initialization work
//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. Resource upload
//前端JSP代码
<div class="modal fade" id="uploadModal" tabindex="-1" role="dialog" aria-labelledby="uploadFile" aria-hidden="true">
<form action="upload" method="post" enctype="multipart/form-data">
<input type="hidden" name="from" value="user">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<h4 class="modal-title" id="uploadFile">上传文件</h4>
</div>
<div class="modal-body">
<input type="file" name="file" value="上传文件">
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">
关闭
</button>
<input type="submit" class="btn btn-primary" value="确定上传"/>
</div>
</div>
</form>
</div>
//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<FileItem> 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. Retrieve duplicate uploaded resources
//这里上传在上面上传资源时候，将保存原始资源名字
public List<UserFile> findRetrieveListByOwnerId(int ownerId,int isDelete){
List<UserFile> fileList = new ArrayList<UserFile>();
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. Platform member recharge
//前端jsp代码
<body>
<div id="wrapper">
<%@include file="common/nav.jsp" %>
<div id="page-wrapper">
<div class="">
<div class="col-md-12">
<h1 class="margin-bottom-15">以下是微信付款码，扫码即可支付</h1>
<div class="form-group">
<div class="col-md-12">
<div class="control-wrapper">
<div class="text-center" id="div1">
<input type="submit" value="扫码付款" class="btn btn-success">
</div>
<div class="text-center" id="div2" style="display: none;">
<input type="submit" value="恭喜您，完成扫码支付！"class="btn btn-warning">
</div>
</div>
<div class="text-center">
<font color="green">${msgSuccess }</font>
<font color="red">${msgFail }</font>
</div>
</div>
</div>
<form class="form-horizontal templatemo-container templatemo-login-form-1 margin-bottom-30" role="form" action="user" method="post">
<input type="hidden" name="action" value="editSubmit">
<div class="form-group">
<img src="static/image/pay.png" alt="平台会员充值码" style="width: 81%; padding-left: 24%;">
</div>
</form>
</div>
</div>
</div>
</div>
</body>
//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();
}
}
}