FTP上传无文件以及0字节问题

2019独角兽企业重金招聘Python工程师标准>>>

这几天在做一个FTP上传文件的功能&＃xff0c;在本地运行完全没有问题&＃xff0c;上传文件成功&＃xff0c;图片成功显示。在公网&＃xff08;centos系统&＃xff09;上进行测试的时候就出了问题了&＃xff0c;上传一直卡到storeFile上&＃xff0c;一般是会卡住30-60秒&＃xff0c;然后返回“false”&＃xff0c;不报异常。所以我又开始怀疑代码的问题&＃xff0c;在本地建了个CentOS的虚拟机&＃xff0c;安装vsftp&＃xff0c;结果是成功的。使用FTP上传工具进行处理公网上传下载一点问题都没有&＃xff0c;不会出现图片不显示以及文件0字节的问题&＃xff0c;至此&＃xff0c;我就十分无耐了&＃xff0c;同样的代码&＃xff0c;在不同环境上支行的效果居然不一样。

具体代码如下&＃xff1a;

&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;上传文件的调用&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;

public String upload(MultipartFile file, String path) {
    String fileName &＃61; file.getOriginalFilename();
    //扩展名
    //abc.jpg
    String fileExtensionName &＃61; fileName.substring(fileName.lastIndexOf(".") &＃43; 1);

    String uploadFileName &＃61; UUID.randomUUID().toString() &＃43; "." &＃43; fileExtensionName;
   log.info("开始上传文件,上传文件的文件名:{},上传的路径:{},新文件名:{}", fileName, path,     uploadFileName);

    File fileDir &＃61; new File(path);
    if (!fileDir.exists()) {
        fileDir.setWritable(true);
        fileDir.mkdirs();
    }
    File targetFile &＃61; new File(path, uploadFileName);

    try {
        file.transferTo(targetFile);
        //文件已经上传成功了
       log.info("文件已经上传成功了,上传文件的文件名:{},上传的路径:{},新文件名:{}", fileName,         path, uploadFileName);
        FTPUtil.uploadFile(Lists.newArrayList(targetFile));
        //已经上传到ftp服务器上
        log.info("已经上传到ftp服务器上,上传文件的文件名:{},上传的路径:{},新文件名:{}", fileName, path, uploadFileName);

        targetFile.delete();
    }catch (IOException e) {
        log.error("上传文件异常", e);
        return null;
    }

    return targetFile.getName();
}

&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;封装成工具使用&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;

public class FTPUtil {

    private static String ftpIp &＃61; PropertiesUtil.getProperty("ftp.server.ip");
    private static String ftpUser &＃61; PropertiesUtil.getProperty("ftp.user");
    private static String ftpPass &＃61; PropertiesUtil.getProperty("ftp.pass");

    public FTPUtil(String ip,int port,String user,String pwd){
        this.ip &＃61; ip;
        this.port &＃61; port;
        this.user &＃61; user;
        this.pwd &＃61; pwd;
    }
    public static boolean uploadFile(List fileList) throws IOException {
        FTPUtil ftpUtil &＃61; new FTPUtil(ftpIp,21,ftpUser,ftpPass);
        log.info("开始连接ftp服务器");
        boolean result &＃61; ftpUtil.uploadFile("img",fileList);
log.info("开始连接ftp服务器,结束上传,上传结果:{}, fileList:{}",         result,fileList.get(0).getName());
        return result;
    }

    private boolean uploadFile(String remotePath,List fileList) throws IOException {
        boolean uploaded &＃61; true;
        FileInputStream fis &＃61; null;
        //连接FTP服务器
        if(connectServer(this.ip,this.port,this.user,this.pwd)){
            try {
                ftpClient.changeWorkingDirectory(remotePath);
                ftpClient.setBufferSize(1024);
                ftpClient.setControlEncoding("UTF-8");
                ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);
                // 开启被动模式&＃xff0c;不建议开启。本地测试可以不开启&＃xff0c;服务端需要开启
                ftpClient.enterLocalPassiveMode();
                for(File fileItem : fileList){
                    fis &＃61; new FileInputStream(fileItem);
                    ftpClient.storeFile(fileItem.getName(),fis);
                    log.info("&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;文件名,{}&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;&＃61;", fileItem.getName());
                }

        } catch (IOException e) {
            log.error("上传文件异常",e);
            uploaded &＃61; false;
            e.printStackTrace();
        } finally {
            fis.close();
            ftpClient.disconnect();
        }
    }
    log.info("&＃61;&＃61;&＃61;&＃61;&＃61;uploaded:{}", uploaded);
    return uploaded;
}

    private boolean connectServer(String ip,int port,String user,String pwd){

        boolean isSuccess &＃61; false;
        ftpClient &＃61; new FTPClient();
        try {
            ftpClient.connect(ip);
            isSuccess &＃61; ftpClient.login(user,pwd);
        } catch (IOException e) {
            log.error("连接FTP服务器异常",e);
        }
        return isSuccess;
    }

    private String ip;
    private int port;
    private String user;
    private String pwd;
    private FTPClient ftpClient;
...省略get()...set()...
}