Question

任何人都可以帮助我如何将图像上传到ftp服务器，而不是在春天存储到本地磁盘，我尝试上传但是它将图像存储在同一项目工作空间中，也存储在ftp服务器中。

我试过的代码？

@RequestMapping(method = RequestMethod.POST, value = "/updateprofile1", consumes = "multipart/form-data")
public String handleFileUpload(@RequestParam("file") MultipartFile file, RedirectAttributes redirectAttributes) {


    FTPSClient con = getFTPConnection();

    try {

        con.setFileType(FTP.BINARY_FILE_TYPE);
    //  createDirectory(con, "test");
        showServerReply(con);
        System.out.println("Target directory: %s" + con.printWorkingDirectory());
        con.setFileType(FTP.BINARY_FILE_TYPE);
        con.enterLocalPassiveMode();


            con.changeWorkingDirectory("user/user_profile");
            con.enterLocalPassiveMode(); // important!
            con.setFileType(FTP.BINARY_FILE_TYPE);
            String fileName = currrentTime.getTimeInMillis() + "_" + file.getName()+".jpg";
            boolean result = con.storeFile(fileName, file.getInputStream());
            con.logout();
            con.disconnect();
            redirectAttributes.addFlashAttribute("message",
                    "You successfully uploaded " + file.getOriginalFilename() + "!");

    } catch (Exception e) {
        redirectAttributes.addFlashAttribute("message", "Could not upload " + file.getOriginalFilename() + "!");
    }

    return "You successfully uploaded " + file.getOriginalFilename() + "!";
}
public static FTPSClient getFTPConnection() {
    FTPSClient ftp = new FTPSClient();
    int reply;
    try {
        ftp.connect("1***4");
        ftp.login("****", "****);
        reply = ftp.getReplyCode();
        if (FTPReply.isPositiveCompletion(reply)) {
            for (int i = 0; i < ftp.listDirectories().length; i++) {
                System.out.println(ftp.listDirectories());
            }
            ftp.changeWorkingDirectory("user");
            showServerReply(ftp);
        //  LOGGER.info("-------->>> %s", ftp.printWorkingDirectory());
            showServerReply(ftp);
            //LOGGER.info("Connected Success");
        } else {
            //LOGGER.error("Connection Failed");
            ftp.disconnect();
            ftp = null;
        }
    } catch (SocketException ex) {
        //LOGGER.error("Error while trying to connect to the ImageBak Repository");
        ex.printStackTrace();
        ftp = null;
    } catch (IOException ex) {
        //LOGGER.error("Error while trying to connect to the ImageBak Repository");
        ex.printStackTrace();
        ftp = null;
    }

    return ftp;

}
private static void showServerReply(FTPClient ftpClient) {
    String[] replies = ftpClient.getReplyStrings();
    if (replies != null && replies.length > 0) {
        for (String aReply : replies) {
            System.out.println("SERVER: " + aReply);
        }
    }
}

Answer 1

尝试使用this示例，将Apache Commons Net添加到您的项目中：

<dependency>
    <groupId>commons-net</groupId>
    <artifactId>commons-net</artifactId>
    <version>3.6</version>
</dependency>

然后更新FileUploadController#handleFileUpload这样的内容：

@PostMapping("/")
public String handleFileUpload(@RequestParam("file") MultipartFile file,
                               RedirectAttributes redirectAttributes) {
    String FTP_ADDRESS = "your_address";
    String LOGIN = "you_login";
    String PSW = "you_password";

    FTPClient con = null;

    try {
        con = new FTPClient();
        con.connect(FTP_ADDRESS);

        if (con.login(LOGIN, PSW)) {
            con.enterLocalPassiveMode(); // important!
            con.setFileType(FTP.BINARY_FILE_TYPE);

            boolean result = con.storeFile(file.getOriginalFilename(), file.getInputStream());
            con.logout();
            con.disconnect();
            redirectAttributes.addFlashAttribute("message",
                    "You successfully uploaded " + file.getOriginalFilename() + "!");
        }
    } catch (Exception e) {
        redirectAttributes.addFlashAttribute("message",
                "Could not upload " + file.getOriginalFilename() + "!");
    }

    return "redirect:/";
}

如何使用spring MultipartFile将图像上传到ftp服务器而不将图像存储在本地磁盘中

1 个答案: