java大文件上传插件（java附件上传功能实现） -九游会ag

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。