FTP站点读取图片

来源：互联网发布：linux远程连接工具编辑：程序博客网时间：2024/05/22 15:48

public byte[] getPhoto(String photoName) throws SocketException, IOException {int reply;ftpClient.connect("192.168.0.114", 21);ftpClient.login("test", "test");ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);reply = ftpClient.getReplyCode();if (!FTPReply.isPositiveCompletion(reply)) {ftpClient.disconnect();System.err.println("FTP站点连接失败！");return null;} else {InputStream is = ftpClient.retrieveFileStream(photoName);byte[] imgByte = this.readStream(is);return imgByte;}}

public byte[] readStream(InputStream inStream) {ByteArrayOutputStream bops = new ByteArrayOutputStream();int data = -1;try {while ((data = inStream.read()) != -1) {bops.write(data);}return bops.toByteArray();} catch (Exception e) {return null;}}

用这两个方法，将存在FTP站点上的图片可以转换成字节流，然后发送到前台可以显示

<span style="white-space:pre"></span>ftpClient.connect("192.168.0.114", 21);//连接FTP站点的IP和端口ftpClient.login("test", "test");//FTP的账号和密码ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);//将文件以二进制的方式传送

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