1、问题
在项目开发过程中，遇到需要将页面上选择的文件上传至FTP服务器，遇到一些坑，比如上传文件中文名乱码，上传时指定上传目录不能自动创建等问题。
2、FTP上传文件工具类
public class FtpUtil { ???private String hostname = "xxx"; ???private Integer port = 21 ; ???private String username = "xxx"; ???private String password = "xxx"; ???private FTPClient client = null; ???public String initialize() throws Exception{ ???????client = new FTPClient(); ???????client.setControlEncoding("utf-8"); ???????client.connect(hostname, port); ???????client.login(username, password); ???????int replyCode = client.getReplyCode(); ???????if(!FTPReply.isPositiveCompletion(replyCode)) ???????????return "Connect ftp failed"; ???????return "success"; ???} ???public String uploadFile(String storePath, String fileName, String uploadFile) throws Exception { ???????InputStream stream = new FileInputStream(new File(uploadFile)); ???????client.setFileType(client.BINARY_FILE_TYPE); ???????this.prepareStorePath(client, storePath); ???????client.sendCommand("OPTS UTF8", "ON"); ???????client.storeFile(fileName, stream); ???????if (client.storeFile(fileName, stream)) ???????????return "Upload file success"; ???????return "Upload file failed"; ???} ???private void prepareStorePath(FTPClient client, String storePath) throws Exception{ ???????String[] split = storePath.split("\\\\\\\\"); ???????for (String str : split) { ???????????if (StringUtils.isBlank(str)) ???????????????continue; ???????????if (!client.changeWorkingDirectory(str)) { ???????????????client.makeDirectory(str); ???????????????client.changeWorkingDirectory(str); ???????????} ???????} ???}} 3、Application.java测试上传
public class Application { ???public static void main(String[] args) throws Exception { ???????FtpUtil ftp = new FtpUtil(); ???????ftp.initialize(); ???????ftp.uploadFile("uploads", "W3School离线手册2017.chm", "F:\\\\ToolFile\\\\W3School离线手册2017.chm"); ???}} 4、文件名中文乱码解决办法
client.sendCommand("OPTS UTF8", "ON"); 5、指定文件存储目录不能创建解决办法
private void prepareStorePath(FTPClient client, String storePath) throws Exception{ ???String[] split = storePath.split("\\\\\\\\"); ???for (String str : split) { ???????if (StringUtils.isBlank(str)) ???????????continue; ???????if (!client.changeWorkingDirectory(str)) { ???????????client.makeDirectory(str); ???????????client.changeWorkingDirectory(str); ???????} ???}} ?路漫漫其修远兮，吾将上下而求索
?译文：在追寻真理方面，前方的道路还很漫长，但我将百折不挠，不遗余力地去追求和探索。