springboot文件上传、下载使用ftp工具将文件上传至服务器
springboot文件上传、下载使用ftp工具
推荐一款ftp客户端工具：iis7服务器管理工具
IIs7服务器管理工具可以批量管理ftp站点，同时具备定时上传下载的功能。
作为服务器集成管理器，它最优秀的功能就是批量管理windows与linux系统服务器、vps。能极大的提高站长及服务器运维人员工作效率。同时iis7服务器管理工具还是vnc客户端，服务器真正实现了一站式管理，可谓是非常方便。
下载地址：http://yczm.iis7.com/?tscc
使用截图如下：
配置文件（在application.properties中）
# Single file max size
multipart.maxFileSize=100Mb
# All files max size
multipart.maxRequestSize=100Mb
#ftp use
ftp.server = www.datasvisser.cn
ftp.port = 41023
ftp.userName = jntechFTP1
ftp.userPassword =MUMjh3E+*=aC4\0
工具类1
/**
* ftp上传，并将访问地址和上传的文件返回给调用者
*
* @author Administrator
*
*/
public class FtpUpload {
/*
* private static String server = "www.datasvisser.cn"; //地址 private static
* int port = 41023;//端口号 private static String userName = "jntechFTP1";//登录名
* private static String userPassword ="MXUsssMjhssE+*=a3C4\\0";//密码
*/ private static String ftpPath = "uploadFiles"; // 文件上传目录
private static FTPClient ftpClient = new FTPClient();
private static String LOCAL_CHARSET = "GBK";
private static String SERVER_CHARSET = "ISO-8859-1";
private final static String localpath = "F:/";//下载到F盘下
private final static String fileSeparator = System.getProperty("file.separator");
/*
*文件上传工具方法
*/
public static boolean upload(MultipartFile uploadFile, HttpServletRequest request, String server, int port,
String userName, String userPassword, Integer id) {
boolean result = false;
try {
request.setCharacterEncoding("utf-8");
ftpClient.connect(server, port);
ftpClient.login(userName, userPassword);
ftpClient.enterLocalPassiveMode();
ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
mkDir(ftpPath);// 创建目录
// 设置上传目录 must
ftpClient.changeWorkingDirectory("/" + ftpPath);
if (FTPReply.isPositiveCompletion(ftpClient.sendCommand("OPTS UTF8", "ON"))) {// 开启服务器对UTF-8的支持，如果服务器支持就用UTF-8编码，否则就使用本地编码（GBK）.
LOCAL_CHARSET = "UTF-8";
}
String fileName = new String(uploadFile.getOriginalFilename().getBytes(LOCAL_CHARSET), SERVER_CHARSET);
fileName = id + "-" + fileName;// 构建上传到服务器上的文件名 20-文件名.后缀
FTPFile[] fs = ftpClient.listFiles(fileName);
if (fs.length == 0) {
System.out.println("this file not exist ftp");
} else if (fs.length == 1) {
System.out.println("this file exist ftp");
ftpClient.deleteFile(fs[0].getName());
}
InputStream is = uploadFile.getInputStream();
result = ftpClient.storeFile(fileName, is);
is.close();
} catch (IOException e) {
result = false;
e.printStackTrace();
} finally {
try {
ftpClient.disconnect();
System.out.println("上传完成。。。");
} catch (IOException e) {
e.printStackTrace();
}
}
return result;
}
/*
*文件下载工具方法
*/
public static byte[] downFileByte(String remotePath ,String fileName,String server,int port,String userName,String userPassword) throws Exception {
ftpClient.connect(server, port);
ftpClient.login(userName, userPassword);
ftpClient.enterLocalPassiveMode();
if(remotePath!=null && !remotePath.equals("")){
ftpClient.changeWorkingDirectory(remotePath);
System.out.println("file success");
}
byte[] return_arraybyte = null;
if (ftpClient != null) {
try {
FTPFile[] files = ftpClient.listFiles();
for (FTPFile file : files) {
String f=new String(file.getName().getBytes("iso-8859-1"),"utf-8");//防止乱码
System.out.println(f);
System.out.println(f.equals(fileName));
if (f.equals(fileName)) {
InputStream ins = ftpClient.retrieveFileStream(file.getName());//需使用file.getName获值，若用f会乱码
ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
byte[] buf = new byte[204800];
int bufsize = 0;
while ((bufsize = ins.read(buf, 0, buf.length)) != -1) {
byteOut.write(buf, 0, bufsize);
}
return_arraybyte = byteOut.toByteArray();
File localFile = new File(localpath +fileSeparator+ f);
OutputStream is = new FileOutputStream(localFile);
ftpClient.retrieveFile(f, is);
is.close();
byteOut.close();
ins.close();
break;
}
}
} catch (Exception e) {
e.printStackTrace();
} finally {
closeConnect();
}
}
return return_arraybyte;
}
public static void closeConnect(){
try{
ftpClient.disconnect();
}catch(Exception e){
e.printStackTrace();
}
}
/**
* 选择上传的目录，没有创建目录
*
* @param ftpPath
* 需要上传、创建的目录
* @return
*/
public static boolean mkDir(String ftpPath) {
if (!ftpClient.isConnected()) {
return false;
}
try {
// 将路径中的斜杠统一
char[] chars = ftpPath.toCharArray();
StringBuffer sbStr = new StringBuffer(256);
for (int i = 0; i < chars.length; i++) {
if ('\\' == chars[i]) {
sbStr.append('/');
} else {
sbStr.append(chars[i]);
}
}
ftpPath = sbStr.toString();
// System.out.println("ftpPath:" + ftpPath);
if (ftpPath.indexOf('/') == -1) {
// 只有一层目录
ftpClient.makeDirectory(new String(ftpPath.getBytes(), "iso-8859-1"));
ftpClient.changeWorkingDirectory(new String(ftpPath.getBytes(), "iso-8859-1"));
} else {
// 多层目录循环创建
String[] paths = ftpPath.split("/");
for (int i = 0; i < paths.length; i++) {
ftpClient.makeDirectory(new String(paths[i].getBytes(), "iso-8859-1"));
ftpClient.changeWorkingDirectory(new String(paths[i].getBytes(), "iso-8859-1"));
}
}
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
}
工具类2
/**
* 从配置文件里面获取值 通过key来获取value
* @author Administrator
*
*/
public class PropertiesUtil {
private static Logger log=LoggerFactory.getLogger(PropertiesUtil.class);
private static Properties properties;
private static final String name="application.properties";
static {
try {
properties=new Properties();
properties.load(new InputStreamReader(PropertiesUtil.class.getClassLoader().getResourceAsStream(name), "utf-8"));
} catch (UnsupportedEncodingException e) {
} catch (IOException e) {
log.error("IOException"+e);
}
}
public static String getValue(String key) {
String value=properties.getProperty(key).trim();
if(value==null) {
return null;
}
return value;
}
public static String getValue(String key,String defaultvalue) {
String value=properties.getProperty(key).trim();
if(value==null) {
value=defaultvalue;
}
return value;
}
}
调用（此处为多文件上传）
@RequestMapping(value = "/dsfps",produces="application/json;charset=UTF-8")
public ServerResponse dsfps(@RequestParam("file") MultipartFile file,HttpServletRequest request,Integer proBasicInforId,Integer userid,Integer deptid,Integer id,Integer psjg,String pszt,String pslx,String pssj,String psdd,String psyj){
long ids= new Date().getTime();//时间戳.后缀 的文件
List files = ((MultipartHttpServletRequest) request).getFiles("file");
String filename=null;
for (MultipartFile m:files
) {
FtpUpload.upload(m, request, PropertiesUtil.getValue("ftp.server"),
Integer.parseInt(PropertiesUtil.getValue("ftp.port")),
PropertiesUtil.getValue("ftp.userName"),
PropertiesUtil.getValue("ftp.userPassword"), ids);
filename= ids+"-"+m.getOriginalFilename()+","+filename;
}
return proDemandProcessService.dsfps( proBasicInforId, userid, deptid, id, psjg, pszt, pslx, pssj, psdd, psyj,filename);
}
文件下载
/**
* 文件的下载
* @param filename
* @return
* @throws Exception
*/
@RequestMapping("/downFiles")
public ServerResponse downFiles(String filename) throws Exception {
String[] split = filename.split(",");
for (String s:split) {
System.out.println(s);
if(s!=null){
FtpUpload.downFileByte("uploadFiles",s,
PropertiesUtil.getValue("ftp.server"),
Integer.parseInt(PropertiesUtil.getValue("ftp.port")),
PropertiesUtil.getValue("ftp.userName"),
PropertiesUtil.getValue("ftp.userPassword")
);
}
}
return ServerResponse.createBySuccess();
}
前端页面
ajax调用传输数据（传输文件的同时，传输其他数据）
var form = new FormData;
var instrumentApplys=new Array();
for(var i =0 ;i另外一种前端页面显示下载弹出框
下载工具类
/**
* ym下载工具类（前端页面显示下载）
* @param remotePath
* @param fileName
* @param server
* @param port
* @param userName
* @param userPassword
* @param response
* @return
* @throws Exception
*/
public static byte[] downFileByte(String remotePath , String fileName, String server, int port, String userName, String userPassword, HttpServletResponse response) throws Exception {
ftpClient.connect(server, port);
ftpClient.login(userName, userPassword);
ftpClient.enterLocalPassiveMode();
if(remotePath!=null && !remotePath.equals("")){
ftpClient.changeWorkingDirectory(remotePath);
System.out.println("file success");
}
byte[] return_arraybyte = null;
String localName = new String(fileName.getBytes("GB2312"), "ISO_8859_1");
response.setContentType("application/octet-stream");
response.setContentType("application/OCTET-STREAM;charset=UTF-8");
response.setHeader("Content-Disposition","attachment;filename="+localName);
if (ftpClient != null) {
try {
FTPFile[] files = ftpClient.listFiles();
for (FTPFile file : files) {
String f=new String(file.getName().getBytes("iso-8859-1"),"utf-8");//防止乱码
if (f.equals(fileName)) {
InputStream ins = ftpClient.retrieveFileStream(file.getName());//需使用file.getName获值，若用f会乱码
//ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
OutputStream os=response.getOutputStream();
byte[] buf = new byte[204800];
int bufsize = 0;
while ((bufsize = ins.read(buf, 0, buf.length)) != -1) {
os.write(buf, 0, bufsize);
}
os.flush();
os.close();
ins.close();
break;
}
}
} catch (Exception e) {
e.printStackTrace();
} finally {
closeConnect();
}
}
return return_arraybyte;
}
controller中的代码
@RequestMapping("/downFiles")
public ServerResponse downFiles(String filename, HttpServletResponse response) throws Exception {
String[] split = filename.split(",");
for (String s:split) {
if(s!=null){
FtpUpload.downFileByte("uploadFiles",s,
PropertiesUtil.getValue("ftp.server"),
Integer.parseInt(PropertiesUtil.getValue("ftp.port")),
PropertiesUtil.getValue("ftp.userName"),
PropertiesUtil.getValue("ftp.userPassword"),response
);
}
}
return ServerResponse.createBySuccess();
}
前端页面