手把手搭建Java共享網盤
阿新 • • 發佈：2020-12-28
專案介紹
線上共享網盤採用jsp+servlet搭建專案結構實現共享網盤，專案分為管理員，普通使用者和付費使用者三種角色，根據不同角色控制不同許可權，實現不同使用者對個人檔案檔案，所有檔案，共享檔案的增刪改查操作。
專案適用人群
正在做畢設的學生，或者需要專案實戰練習的Java學習者
開發環境：
- jdk 8
- intellij idea
- tomcat 8.5.40
- mysql 5.7
所用技術：
- jsp+servlet
- js+ajax
- layUi
- jdbc直連
專案訪問地址
http://localhost:8090
專案結構
專案截圖
- 註冊
- 我的網盤
-
我的共享
-
回收站
-
會員充值
-
管理員-所有檔案
-
管理員-共享申請
關鍵程式碼:
1.初始化工作
//資料庫連線初始化 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; } } //上傳資源初始化 public void init() throws ServletException { super.init(); //servlet啟動時 ，讀取配置檔案中關於上傳的資訊 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"); //配置上傳臨時目錄 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.資源上傳
//前端JSP程式碼 <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">上傳檔案</h4> </div> <div class="modal-body"> <input type="file" name="file" value="上傳檔案"> </div> <div class="modal-footer"> <button type="button" class="btn btn-default" data-dismiss="modal"> 關閉 </button> <input type="submit" class="btn btn-primary" value="確定上傳"/> </div> </div> </form> </div> //後端入庫處理 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{ //上傳檔名 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(); //獲取檔案大小 long size = fileItem.getSize(); String sizeString = StringUtil.computeSize(size); Timestamp upTime = new Timestamp(new Date().getTime()); File file = new File(root,fileName); //解決檔案同名 int cnt = 1; while(file.exists()){ StringBuffer sb = new StringBuffer(fileName); sb.insert(sb.lastIndexOf("."), "("+cnt+")"); file = new File(root,sb.toString()); cnt++; } //檔案路徑是否存在 if(!file.getParentFile().exists()){ file.getParentFile().mkdirs(); } try { fileItem.write(file); //上傳成功，資料庫儲存記錄 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("上傳出錯"); } } } } catch (FileUploadException e) { e.printStackTrace(); response.setContentType("text/html; charset=utf8"); response.getWriter().print("上傳出錯!!"); } }
3.檢索重複上傳的資源
//這裡上傳在上面上傳資源時候，將儲存原始資源名字
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.平臺會員充值
//前端jsp程式碼
<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">以下是微信付款碼，掃碼即可支付</h1>
<div class="form-group">
<div class="col-md-12">
<div class="control-wrapper">
<div class="text-center" id="div1">
<input type="submit" value="掃碼付款" class="btn btn-success">
</div>
<div class="text-center" id="div2" style="display: none;">
<input type="submit" value="恭喜您，完成掃碼支付！"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="平臺會員充值碼" style="width: 81%; padding-left: 24%;">
</div>
</form>
</div>
</div>
</div>
</div>
</body>
//js實現,採用定時跳轉模擬真實使用者支付流程，後續進行改動使用者會員狀態
var test1 = setTimeout(function(){
$("#div1").css("display","none");
$("#div2").css("display","block");
layer.msg('恭喜您，完成掃碼支付！', {time: 4000, icon:6},function () {
window.location.href="user?action=doTopUp";
});
clearTimeout(test1);
},5000);
//後端程式碼
public void doTopUp(User user) {
Connection conn = db.getConnection();
PreparedStatement ps = null;
ResultSet rs = null;
try {
//members=1為會員狀態
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();
}
}
}
專案後續
其他ssh，ssm，springboot版本後續迭代更新，持續關注