利用Apache 实现FTp的上传和下载

迈不过友情╰ 2024-02-17 14:05 32阅读 0赞

在ftp上传时我遇到了很奇怪的问题：

上传中文名的文件在服务器上显示正常 ，可到浏览器上就变成了乱码，下载后文件也是正常的。不知道什么原因，修改浏览器编码也不管用，不知道各位朋友遇到这样的问题没，这是我的上传ftp服务器代码，供大家参考下

package com.wu;
    
    import java.io.FileInputStream;
    import java.io.IOException;
    
    import org.apache.commons.net.ftp.FTPClient;
    import org.apache.commons.net.ftp.FTPReply;
    
    /**
     * @author wu
     *
     */
    public class Ftps {
    
    	public static void main(String[] args) {
    		ftpUpload("10.254.201.50", "21", "xxxx", "123456", "DIMS/UploadData", "C:\\Users\\Desktop\\", "12345新建文本文.txt");
    		downLoadFile("10.254.201.50", "21", "xxxx", "123456","DIMS/UploadData/12345新建文本文.txt","C:\\Users\\Desktop\\12345新建文本文.txt");
    
    }
            /** 
    	 * 通过ftp上传文件 
    	 * @param url ftp服务器地址 如： 192.168.1.110 
    	 * @param port 端口如 ： 21 
    	 * @param username  登录名 
    	 * @param password   密码 
    	 * @param remotePath  上到ftp服务器的磁盘路径 
    	 * @param fileNamePath  要上传的文件路径 
    	 * @param fileName      要上传的文件名 
    	 * @return 
    	 */  
    	public static String ftpUpload(String url, String port, String username,String password, String remotePath, String fileNamePath,String fileName) {  
    		 FTPClient ftpClient = new FTPClient();  
    		 FileInputStream fis = null;  
    		 String returnMessage = "0";  
    		 try {  
    		     ftpClient.connect(url, Integer.parseInt(port));  
    		     boolean loginResult = ftpClient.login(username, password);  
    		     int returnCode = ftpClient.getReplyCode();  
    		     if (loginResult && FTPReply.isPositiveCompletion(returnCode)) {// 如果登录成功  
    		    	 ftpClient.setControlEncoding("GBK"); 
    		    	 ftpClient.makeDirectory(remotePath);  
    		         // 设置上传目录  
    		         ftpClient.changeWorkingDirectory(new String(remotePath.getBytes("GBK"),"iso-8859-1"));  
    		         ftpClient.setBufferSize(1024);  
    		         //ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);
    		         ftpClient.enterLocalPassiveMode();  
    		         fis = new FileInputStream(fileNamePath + fileName);  
    		         //注意文件名转码否则可能不能上传haiy中文文件名
    		         ftpClient.storeFile(new String(fileName.getBytes("GBK"), "ISO-8859-1") , fis);  
    		            
    		         returnMessage = "1";   //上传成功        
    		     } else {// 如果登录失败  
    		         returnMessage = "0";  
    		         }  
    		                
    		   
    		 } catch (IOException e) {  
    		     e.printStackTrace();  
    		     throw new RuntimeException("FTP客户端出错！", e);  
    		 } finally {  
    		     //IOUtils.closeQuietly(fis);  
    		 try {  
    		     ftpClient.disconnect();  
    		 } catch (IOException e) {  
    		        e.printStackTrace();  
    		        throw new RuntimeException("关闭FTP连接发生异常！", e);  
    		    }  
    		 }  
    		 return returnMessage;  
    		} 
    
             /**
    	 * ftp下载文件
             * @param remoteFileName --服务器上的文件名
             * @param localFileName--本地文件名
    	 */
    	public static boolean downLoadFile(String url, String port, String username,String password,String remoteFileName,String localFileName){
    		 
    		FTPClient ftpClient = new FTPClient();
    	        BufferedOutputStream buffOut=null;
    	        boolean flag = true;//下载成功返回true
    	        try {
    			ftpClient.connect(url, Integer.parseInt(port));
    			boolean loginResult = ftpClient.login(username, password);  
    			int returnCode = ftpClient.getReplyCode(); 
    			if(loginResult && FTPReply.isPositiveCompletion(returnCode)){
    			    buffOut=new BufferedOutputStream(new FileOutputStream(localFileName));
    			    //注意编码 我刚开始没有编码 下载的文件会是空的
    			    flag =  ftpClient.retrieveFile(new String(remoteFileName.getBytes("GBK"), "ISO-8859-1"), buffOut);
    			}else{
    			    	ftpClient.disconnect();
    			}
    		} catch (IOException e1) {
    			// TODO Auto-generated catch block
    			e1.printStackTrace();
    			throw new RuntimeException("FTP客户端出错！", e1); 
    		}finally{
    		        try{
    	                   if(buffOut!=null){
    	                	buffOut.flush();
    	                	buffOut.close();
    	                   }
    	                   ftpClient.logout();
    	                   ftpClient.disconnect();
    	                }catch(Exception e){
    	                   e.printStackTrace();
    	                   throw new RuntimeException("关闭FTP连接发生异常！", e);
    	                }
    		}
    	        return flag;
    	}
    }

所需jar包  commons-net-3.0.1.jar、ftp4j-1.6.1.jar下载地址[http://download.csdn.net/detail/yusewuhen/6669625][http_download.csdn.net_detail_yusewuhen_6669625]

[http_download.csdn.net_detail_yusewuhen_6669625]: http://download.csdn.net/detail/yusewuhen/6669625