【扫雷4.0源码】【nas 源码仓库】【jvm笔记源码】java文件上传下载源码_java文件上传下载源码是什么
1.Java SpringBoot本地上传文件到resources目录永久保存的文件文件最佳实践
2.java实现文件上传,代码尽量简洁~~~~~·
3.java的上传上传扫雷4.0源码纯JDBC能实现上传下载吗?怎么实现?
4.å¦ä½å¨Javaç¨åºä¸å®ç°FTPçä¸ä¼ ä¸è½½åè½
Java SpringBoot本地上传文件到resources目录永久保存的最佳实践
在Java SpringBoot项目中,为了实现本地文件上传并永久保存以便前端下载,下载下载nas 源码仓库最佳实践是源码源码jvm笔记源码将文件存储在resources目录下,并结合target/classes目录。文件文件netty实战源码以下是上传上传奇客源码具体步骤:
首先,通过ResourceUtils.getURL("classpath:").getPath()获取target/classes目录的下载下载绝对路径,前端上传的源码源码文件应保存在此目录下的子目录,如upload/logo.jpg,文件文件返回的上传上传下载地址格式为/u/å¦ä½å¨Javaç¨åºä¸å®ç°FTPçä¸ä¼ ä¸è½½åè½
以ä¸æ¯è¿ä¸é¨åçJAVAæºç¨åºï¼ (1)æ¾ç¤ºFTPæå¡å¨ä¸çæ件 void ftpList_actionPerformed(ActionEvent e) { String server=serverEdit.getText();//è¾å ¥çFTPæå¡å¨çIPå°å String user=userEdit.getText();//ç»å½FTPæå¡å¨çç¨æ·å String password=passwordEdit.getText();//ç»å½FTPæå¡å¨çç¨æ·åçå£ä»¤ String path=pathEdit.getText();//FTPæå¡å¨ä¸çè·¯å¾ try { FtpClient ftpClient=new FtpClient();//å建FtpClient对象 ftpClient.openServer(server);//è¿æ¥FTPæå¡å¨ ftpClient.login(user, password);//ç»å½FTPæå¡å¨ if (path.length()!=0) ftpClient.cd(path); TelnetInputStream is=ftpClient.list(); int c; while ((c=is.read())!=-1) { System.out.print((char) c);} is.close(); ftpClient.closeServer();//éåºFTPæå¡å¨ } catch (IOException ex) { ;} } (2)ä»FTPæå¡å¨ä¸ä¸ä¼ ä¸ä¸ªæ件 void getButton_actionPerformed(ActionEvent e) { String server=serverEdit.getText(); String user=userEdit.getText(); String password=passwordEdit.getText(); String path=pathEdit.getText(); String filename=filenameEdit.getText(); try { FtpClient ftpClient=new FtpClient(); ftpClient.openServer(server); ftpClient.login(user, password); if (path.length()!=0) ftpClient.cd(path); ftpClient.binary(); TelnetInputStream is=ftpClient.get(filename); File file_out=new File(filename); FileOutputStream os=new FileOutputStream(file_out); byte[] bytes=new byte[]; int c; while ((c=is.read(bytes))!=-1) { os.write(bytes,0,c); } is.close(); os.close(); ftpClient.closeServer(); } catch (IOException ex) { ;} } (3)åFTPæå¡å¨ä¸ä¸ä¼ ä¸ä¸ªæ件 void putButton_actionPerformed(ActionEvent e) { String server=serverEdit.getText(); String user=userEdit.getText(); String password=passwordEdit.getText(); String path=pathEdit.getText(); String filename=filenameEdit.getText(); try { FtpClient ftpClient=new FtpClient(); ftpClient.openServer(server); ftpClient.login(user, password); if (path.length()!=0) ftpClient.cd(path); ftpClient.binary(); TelnetOutputStream os=ftpClient.put(filename); File file_in=new File(filename); FileInputStream is=new FileInputStream(file_in); byte[] bytes=new byte[]; int c; while ((c=is.read(bytes))!=-1){ os.write(bytes,0,c);} is.close(); os.close(); ftpClient.closeServer(); } catch (IOException ex) { ;} } }