java大文件上传插件（java附件上传功能实现）

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 = "疫情家长会xxx";    private integer port = 21 ;    private string urname = "xxx";    private string password = "xxx";    private ftpclient client = null;    public string initialize() throws exception{        client = new ftpclient();        client.tcontrolencoding("utf-8");        client.connect(hostname, port);        client.login(urname, 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.tfiletype(client.binary_file_type);        this.preparestorepath(client, storepath);        client.ndcommand("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 (stri赋诗ngutils.isblank(str))                continue;            if (!client.changeworkingdirectory(str)) {                client.makedirectory(str);                client.ch承担社会责任angeworkingdirectory(str);            }        }    }}

3、application.java测试上传

public class application {    public static void main(string[杨千嬅什么歌好听] 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.ndcommand("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("\\\\十一北京旅游推荐");    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。