【FTP】org.apache.commons.net.ftp.FTPClient實現復雜的上傳下載，操作目錄，處理編碼

本文轉載自查看原文 2017-06-30 11:29 1874

和上一份簡單上傳下載一樣

來，任何的方法不懂的，http://commons.apache.org/proper/commons-net/apidocs/org/apache/commons/net/ftp/FTPClient.html

API拿走不謝！！！

1.FTP配置實體

 1 package com.agen.util;
 2 
 3 public class FtpConfig {
 4      //主機ip  
 5     private String FtpHost = "192.168.18.252";  
 6     //端口號  
 7     private int FtpPort = 21;  
 8     //ftp用戶名  
 9     private String FtpUser = "ftp";  
10     //ftp密碼  
11     private String FtpPassword = "agenbiology";  
12     //ftp中的目錄  這里先指定的根目錄
13     private String FtpPath = "/";
14     
15     
16     
17     public String getFtpHost() {
18         return FtpHost;
19     }
20     public void setFtpHost(String ftpHost) {
21         FtpHost = ftpHost;
22     }
23     public int getFtpPort() {
24         return FtpPort;
25     }
26     public void setFtpPort(int ftpPort) {
27         FtpPort = ftpPort;
28     }
29     public String getFtpUser() {
30         return FtpUser;
31     }
32     public void setFtpUser(String ftpUser) {
33         FtpUser = ftpUser;
34     }
35     public String getFtpPassword() {
36         return FtpPassword;
37     }
38     public void setFtpPassword(String ftpPassword) {
39         FtpPassword = ftpPassword;
40     }
41     public String getFtpPath() {
42         return FtpPath;
43     }
44     public void setFtpPath(String ftpPath) {
45         FtpPath = ftpPath;
46     }  
47     
48     
49     
50 }

View Code

2.FTP工具類，僅有一個刪除文件夾【目錄】的操作方法，刪除文件夾包括文件夾下所有的文件

  1 package com.agen.util;
  2 
  3 import java.io.IOException;
  4 import java.io.InputStream;
  5 import java.io.OutputStream;
  6 import java.net.URLDecoder;
  7 import java.net.URLEncoder;
  8 
  9 import org.apache.commons.net.ftp.FTPClient;
 10 import org.apache.commons.net.ftp.FTPFile;
 11 
 12 
 13 
 14 public class FtpUtils {
 15     
 16     /**
 17      * 獲取FTP連接
 18      * @return
 19      */
 20     public  FTPClient getFTPClient() {
 21         FtpConfig config = new FtpConfig();
 22         FTPClient ftpClient = new FTPClient();
 23         boolean result = true;
 24         try {
 25             //連接FTP服務器
 26             ftpClient.connect(config.getFtpHost(), config.getFtpPort());
 27             //如果連接
 28             if (ftpClient.isConnected()) {
 29                 //提供用戶名/密碼登錄FTP服務器
 30                 boolean flag = ftpClient.login(config.getFtpUser(), config.getFtpPassword());
 31                 //如果登錄成功
 32                 if (flag) {
 33                     //設置編碼類型為UTF-8
 34                     ftpClient.setControlEncoding("UTF-8");
 35                     //設置文件類型為二進制文件類型
 36                     ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);
 37                 } else {
 38                     result = false;
 39                 }
 40             } else {
 41                 result = false;
 42             }
 43             //成功連接並 登陸成功  返回連接
 44             if (result) {
 45                 return ftpClient;
 46             } else {
 47                 return null;
 48             }
 49         } catch (Exception e) {
 50             e.printStackTrace();
 51             return null;
 52         }
 53     }
 54     /**
 55      * 刪除文件夾下所有文件
 56      * @return
 57      * @throws IOException 
 58      */
 59     public boolean deleteFiles(String pathname) throws IOException{
 60         FTPClient ftpClient = getFTPClient();
 61         ftpClient.enterLocalPassiveMode();//在調用listFiles()方法之前需要調用此方法
 62         FTPFile[] ftpFiles = ftpClient.listFiles(new String((pathname).getBytes("UTF-8"),"iso-8859-1"));
 63         System.out.println(ftpFiles == null ? null :ftpFiles.length );
 64         if(ftpFiles.length > 0){
 65             for (int i = 0; i < ftpFiles.length; i++) {
 66                 System.out.println(ftpFiles[i].getName());
 67                 if(ftpFiles[i].isDirectory()){
 68                     deleteFiles(pathname+"/"+ftpFiles[i].getName());
 69                 }else{
 70                     System.out.println(pathname);
 71                     //這里需要提供刪除文件的路徑名 才能刪除文件
 72                     ftpClient.deleteFile(new String((pathname+"/"+ftpFiles[i].getName()).getBytes("UTF-8"),"iso-8859-1"));
 73                     FTPFile [] ftFiles = ftpClient.listFiles(new String((pathname).getBytes("UTF-8"),"iso-8859-1"));
 74                     if(ftFiles.length == 0){//如果文件夾中現在已經為空了
 75                         ftpClient.removeDirectory(new String(pathname.getBytes("UTF-8"),"iso-8859-1"));
 76                     }
 77                 }
 78             }
 79         }
 80         return true;
 81     }
 82     
 83     /**
 84      * 關閉 輸入流或輸出流
 85      * @param in
 86      * @param out
 87      * @param ftpClient
 88      */
 89     public  void close(InputStream in, OutputStream out,FTPClient ftpClient) {
 90         if (null != in) {
 91             try {
 92                 in.close();
 93             } catch (IOException e) {
 94                 e.printStackTrace();
 95                 System.out.println("輸入流關閉失敗");
 96             }
 97         }
 98         if (null != out) {
 99             try {
100                 out.close();
101             } catch (IOException e) {
102                 e.printStackTrace();
103                 System.out.println("輸出流關閉失敗");
104             }
105         }
106         if (null != ftpClient) {
107             try {
108                 ftpClient.logout();
109                 ftpClient.disconnect();
110             } catch (IOException e) {
111                 e.printStackTrace();
112                 System.out.println("Ftp服務關閉失敗!");
113             }
114         }
115     }
116     
117 }

View Code

刪除方法中，調用listFiles()方法之前，需要調用ftpClient.enterLocalPassiveMode();

關於調用listFiles()方法，有以下幾種情況需要注意：

①listFiles()方法可能返回為null，這個問題我也遇到了，這種原因是因為FTP服務器的語言環境，編碼方式，時間戳等各種的沒有處理好或者與程序端並不一致

②首先可以使用listNames()方法排除是否是路徑的原因，路徑編碼方式等原因

③其次，調整好路徑后，有如下提示的錯誤Caused by: java.lang.ClassNotFoundException: org.apache.oro.text.regex.MalformedPatternException，需要導入一個架包【jakarta-oro-2.0.8.jar】

3.實際用到的FTP上傳【創建多層中文目錄】+下載【瀏覽器下載OR服務器下載】+刪除【處理FTP編碼方式與本地編碼不一致】

  1     /**
  2      * 上傳至FTP服務器
  3      * @param partFile
  4      * @param request
  5      * @param diseaseName
  6      * @param productName
  7      * @param diseaseId
  8      * @return
  9      * @throws IOException
 10      */
 11     @RequestMapping("/uploadFiles")
 12     @ResponseBody
 13     public  boolean uploadFiles(@RequestParam("upfile")MultipartFile partFile,HttpServletRequest request,String diseaseName,String productName,String diseaseId) throws IOException{
 14              Disease disease = new Disease();
 15              disease.setDiseaseId(diseaseId);  
 16              Criteria criteria = getCurrentSession().createCriteria(Filelist.class);
 17              criteria.add(Restrictions.eq("disease", disease));
 18              Filelist flFilelist = filelistService.uniqueResult(criteria);
 19              if(flFilelist == null){
 20                  FtpUtils ftpUtils = new FtpUtils();
 21                  boolean result = true;
 22                 InputStream in = null;
 23                 FTPClient ftpClient = ftpUtils.getFTPClient();
 24                 if (null == ftpClient) {
 25                     System.out.println("FTP服務器未連接成功!!!");
 26                     return false;
 27                 }
 28                 try {
 29                     
 30                     String path = "/file-ave/";
 31                     ftpClient.changeWorkingDirectory(path);
 32                     System.out.println(ftpClient.printWorkingDirectory());
 33                     //創建產品文件夾   轉碼 防止在FTP服務器上創建時亂碼
 34                     ftpClient.makeDirectory(new String(productName.getBytes("UTF-8"),"iso-8859-1"));
 35                     //指定當前的工作路徑到產品文件夾下
 36                     ftpClient.changeWorkingDirectory(path+new String(productName.getBytes("UTF-8"),"iso-8859-1"));
 37                     //創建疾病文件夾   轉碼
 38                     ftpClient.makeDirectory(new String(diseaseName.getBytes("UTF-8"),"iso-8859-1"));
 39                     //指定當前的工作路徑到疾病文件夾下
 40                     ftpClient.changeWorkingDirectory(path+new String(productName.getBytes("UTF-8"),"iso-8859-1")+"/"+new String(diseaseName.getBytes("UTF-8"),"iso-8859-1"));
 41                     
 42                     // 得到上傳的文件的文件名
 43                     String filename = partFile.getOriginalFilename();
 44                     in = partFile.getInputStream();
 45                     ftpClient.storeFile(new String(filename.getBytes("UTF-8"),"iso-8859-1"), in);
 46                     path += productName+"/"+diseaseName+"/";
 47                     
 48                     
 49                     DecimalFormat df = new DecimalFormat();
 50                       String fileSize = partFile.getSize()/1024>100 ? (partFile.getSize()/1024/1024>100? df.format((double)partFile.getSize()/1024/1024/1024)+"GB" :df.format((double)partFile.getSize()/1024/1024)+"MB" ) :df.format((double)partFile.getSize()/1024)+"KB";
 51                       HttpSession session = request.getSession();
 52                       User user = (User) session.getAttribute("user");
 53                      
 54                       Filelist filelist = new Filelist();
 55                       filelist.setFileId(UUID.randomUUID().toString());
 56                       filelist.setFileName(filename);
 57                       filelist.setFilePath(path+filename);
 58                       filelist.setFileCre(fileSize);
 59                       filelist.setCreateDate(new Timestamp(System.currentTimeMillis()));
 60                       filelist.setUpdateDate(new Timestamp(System.currentTimeMillis()));
 61                       filelist.setTransPerson(user.getUserId());
 62                       filelist.setDisease(disease);
 63                       filelistService.save(filelist);
 64                       
 65                     
 66                     
 67                     return result;
 68                     
 69                 } catch (IOException e) {
 70                     e.printStackTrace();
 71                     return false;
 72                 } finally {
 73                     ftpUtils.close(in, null, ftpClient);
 74                 }
 75              }else{
 76                  return false;
 77              }
 78     }
 79     
 80     /**
 81      * 刪除文件
 82      * @param filelistId
 83      * @return
 84      * @throws IOException 
 85      * @throws UnsupportedEncodingException 
 86      */
 87     @RequestMapping("/filelistDelete")
 88     @ResponseBody
 89       public boolean filelistDelete(String []filelistId) throws UnsupportedEncodingException, IOException{
 90         for (String string : filelistId) {
 91             Filelist filelist =  filelistService.uniqueResult("fileId", string);
 92             String filePath = filelist.getFilePath();
 93             FtpUtils ftpUtils = new FtpUtils();
 94             FTPClient ftpClient = ftpUtils.getFTPClient();
 95             InputStream inputStream = ftpClient.retrieveFileStream(new String(filePath.getBytes("UTF-8"),"iso-8859-1"));
 96             if(inputStream != null || ftpClient.getReplyCode() == 550){
 97                 ftpClient.deleteFile(filePath);
 98             }
 99             filelistService.deleteById(string);
100         }
101         return true;
102       }
103     
104     /**
105      * 下載到本地
106      * @param fileId
107      * @param response
108      * @return
109      * @throws IOException
110      * @throws InterruptedException
111      */
112     @RequestMapping("/fileDownload")
113     public String fileDownload(String fileId,HttpServletResponse response) throws IOException, InterruptedException{
114         Filelist filelist = filelistService.get(fileId);
115         Assert.notNull(filelist);
116         String filePath = filelist.getFilePath();
117         String fileName = filelist.getFileName();
118         String targetPath = "D:/biologyInfo/Download/";
119         File file = new File(targetPath);
120         while(!file.exists()){
121             file.mkdirs();
122         }
123         FtpUtils ftpUtils = new FtpUtils(); 
124         FileOutputStream out = null;
125         FTPClient ftpClient = ftpUtils.getFTPClient();
126         if (null == ftpClient) {
127             System.out.println("FTP服務器未連接成功!!!");
128         }
129         try {
130             //下載到 應用服務器而不是本地
131 //            //要寫到本地的位置
132 //            File file2 = new File(targetPath + fileName);
133 //            out = new FileOutputStream(file2);
134 //            //截取文件的存儲位置 不包括文件本身
135 //            filePath = filePath.substring(0, filePath.lastIndexOf("/"));
136 //            //文件存儲在FTP的位置
137 //            ftpClient.changeWorkingDirectory(new String(filePath.getBytes("UTF-8"),"iso-8859-1"));
138 //            System.out.println(ftpClient.printWorkingDirectory());
139 //            //下載文件
140 //            ftpClient.retrieveFile(new String(fileName.getBytes("UTF-8"),"iso-8859-1"), out);
141 //            return true;
142             
143             //下載到  客戶端 瀏覽器
144             InputStream inputStream = ftpClient.retrieveFileStream(new String(filePath.getBytes("UTF-8"),"iso-8859-1"));
145             response.setContentType("multipart/form-data");
146             response.setHeader("Content-Disposition", "attachment;filename="+ new String(fileName.getBytes("UTF-8"),"iso-8859-1")); 
147             OutputStream outputStream = response.getOutputStream();
148              byte[] b = new byte[1024];  
149              int length = 0;  
150              while ((length = inputStream.read(b)) != -1) {  
151                 outputStream.write(b, 0, length);  
152              }
153              
154         } catch (IOException e) {
155             e.printStackTrace();
156         } finally {
157             ftpUtils.close(null, out, ftpClient);
158         }
159         return null;
160     }
161

View Code

最后注意一點：

FTP服務器不一樣，會引發很多的問題，因為FTP服務器的語言環境，編碼方式，時間戳等各種的原因，導致程序中需要進行大量的類似的處理，要跟FTP進行匹配使用。

因為FTP架包是apache的，所以使用apache自己的FTP服務器，是匹配度最高的，傳入文件路徑等都不需要考慮轉碼等各種各樣的問題！！！

--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

---------------------------------------------------------附錄------------------------------------------------------------------------------------

FTPFile[] ftpFiles = ftpClient.listFiles(new String((pathname).getBytes("UTF-8"),"iso-8859-1"));

方法的調用，報錯如下：

 1 java.lang.NoClassDefFoundError: org/apache/oro/text/regex/MalformedPatternException
 2     at org.apache.commons.net.ftp.parser.DefaultFTPFileEntryParserFactory.createUnixFTPEntryParser(DefaultFTPFileEntryParserFactory.java:169)
 3     at org.apache.commons.net.ftp.parser.DefaultFTPFileEntryParserFactory.createFileEntryParser(DefaultFTPFileEntryParserFactory.java:94)
 4     at org.apache.commons.net.ftp.FTPClient.initiateListParsing(FTPClient.java:2358)
 5     at org.apache.commons.net.ftp.FTPClient.listFiles(FTPClient.java:2141)
 6     at com.sxd.ftp.FtpUtils.deleteFiles(FtpUtils.java:170)
 7     at com.sxd.ftp.FtpUtils.test(FtpUtils.java:200)
 8     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 9     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
10     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
11     at java.lang.reflect.Method.invoke(Unknown Source)
12     at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
13     at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
14     at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
15     at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
16     at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
17     at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
18     at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
19     at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
20     at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
21     at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
22     at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
23     at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
24     at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
25     at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
26     at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
27     at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
28     at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
29     at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
30     at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
31 Caused by: java.lang.ClassNotFoundException: org.apache.oro.text.regex.MalformedPatternException
32     at java.net.URLClassLoader.findClass(Unknown Source)
33     at java.lang.ClassLoader.loadClass(Unknown Source)
34     at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
35     at java.lang.ClassLoader.loadClass(Unknown Source)
36     ... 29 more

View Code

解決方法：
jakarta-oro-2.0.8.jar

免責聲明！

本站轉載的文章為個人學習借鑒使用，本站對版權不負任何法律責任。如果侵犯了您的隱私權益，請聯系本站郵箱yoyou2525@163.com刪除。

猜您在找 org.apache.commons.net.ftp.FTPClient上傳文件大小改變的解決方法 ftp org.apache.commons.net.ftp.FTPClient 判斷文件是否存在 FTPClient--FTP操作幫助類，上傳下載，文件，目錄操作 socket實現ftp上傳下載 python3 FTP上傳下載復雜版 MAC命令行使用FTP並且實現腳本操作FTP的上傳下載 python實現支持目錄FTP上傳下載文件的方法簡單的FTP上傳下載(java實現 swing界面) FTP客戶端上傳下載Demo實現 python 實現遠端ftp文件上傳下載