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springmvc+mybatis+html 下将查询数据以excell形式上传到ftp(下)
上节讲到的是从数据库中查询相应的结果以excell形式写到ftp服务器上,今天又试了试从ftp上将excell 文件下载到本地目录,一开始的时候遇到了中文乱码问题,文件名中含有中文下载下来文件名为乱码,以下贴出核心代码
1 package com.ninefbank.smallpay.admin.util; 2 3 import java.io.BufferedOutputStream; 4 import java.io.File; 5 import java.io.FileInputStream; 6 import java.io.FileOutputStream; 7 import java.io.IOException; 8 import java.io.OutputStream; 9 10 import org.apache.commons.lang3.StringUtils; 11 import org.apache.commons.net.ftp.FTPClient; 12 import org.apache.commons.net.ftp.FTPClientConfig; 13 import org.apache.commons.net.ftp.FTPFile; 14 import org.apache.commons.net.ftp.FTPReply; 15 import org.slf4j.Logger; 16 import org.slf4j.LoggerFactory; 17 18 import com.jcraft.jsch.Channel; 19 import com.jcraft.jsch.ChannelSftp; 20 import com.jcraft.jsch.JSch; 21 import com.jcraft.jsch.Session; 22 import com.ninefbank.smallpay.admin.common.Ftp; 23 import com.ninefbank.smallpay.common.util.DateUtil; 24 import com.ninefbank.smallpay.common.vo.FtpRequest; 25 26 public class FtpUtils { 27 private static Logger logger = LoggerFactory.getLogger(FtpUtils.class); 28 private static FTPClient ftp; 29 private static String LOCAL_CHARSET = "GBK"; 30 31 32 /* 获取ftp连接 33 * @param f 34 * @return 35 * @throws Exception 36 */ 37 public static boolean connectFtp(Ftp f) throws Exception{ 38 ftp=new FTPClient(); 39 boolean flag=false; 40 int reply; 41 if (f.getPort()==null) { 42 ftp.connect(f.getIpAddr(),21); 43 }else{ 44 ftp.connect(f.getIpAddr(),f.getPort()); 45 } 46 ftp.login(f.getUserName(), f.getPwd()); 47 ftp.setFileType(FTPClient.BINARY_FILE_TYPE); 48 reply = ftp.getReplyCode(); 49 if (!FTPReply.isPositiveCompletion(reply)) { 50 ftp.disconnect(); 51 return flag; 52 } 53 ftp.changeWorkingDirectory(f.getPath()); 54 flag = true; 55 return flag; 56 } 57 /* 下载链接配置 58 * @param f 59 * @param localBaseDir 本地目录 60 * @param remoteBaseDir 远程目录 61 * @throws Exception 62 */ 63 public static void startDown(Ftp f,String localBaseDir,String remoteBaseDir ,FtpRequest reqs) throws Exception{ 64 if (FtpUtils.connectFtp(f)) { 65 66 try { 67 String ip = reqs.getIp(); 68 int port = Integer.parseInt(reqs.getPort()); 69 String userName = reqs.getUserName(); 70 String userPwd = reqs.getPwd(); 71 String path = reqs.getDownloadPath(); 72 String fileName = reqs.getFileName(); 73 String localPath = reqs.getLocalPath(); 74 FTPFile[] files = null; 75 FTPClient ftpClient = new FTPClient(); 76 ftpClient.connect(ip, port); 77 // 登录 78 ftpClient.login(userName, userPwd); 79 // 设置传输协议 80 ftpClient.setRemoteVerificationEnabled(false); 81 ftpClient.enterLocalPassiveMode(); 82 ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE); 83 ftpClient.setListHiddenFiles(true); 84 // ftpClient.configure(new FTPClientConfig(FTPClientConfig.SYST_UNIX)); 85 if (FTPReply.isPositiveCompletion(ftpClient.sendCommand( 86 "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). 87 LOCAL_CHARSET = "UTF-8"; 88 } 89 ftpClient.setControlEncoding(LOCAL_CHARSET); 90 boolean changedir = ftpClient.changeWorkingDirectory(remoteBaseDir); 91 if (changedir) { 92 93 94 // ftp.setControlEncoding("GBK"); 95 96 files = ftpClient.listFiles(); 97 for (int i = 0; i < files.length; i++) { 98 try{ 99 if(fileName.equals(files[i].getName())){ 100 downloadFile(ftpClient,files[i], localBaseDir, remoteBaseDir); 101 } 102 103 }catch(Exception e){ 104 logger.error("异常信息:"+e); 105 logger.error("<"+files[i].getName()+">下载失败"); 106 } 107 } 108 } 109 } catch (Exception e) { 110 logger.error("异常信息:"+e); 111 logger.error("下载过程中出现异常"); 112 } 113 }else{ 114 logger.error("链接失败!"); 115 } 116 117 } 118 119 120 /** 121 * 122 * 下载FTP文件 123 * 当你需要下载FTP文件的时候,调用此方法 124 * 根据<b>获取的文件名,本地地址,远程地址</b>进行下载 125 * 126 * @param ftpFile 127 * @param relativeLocalPath 128 * @param relativeRemotePath 129 */ 130 private static void downloadFile(FTPClient ftpClient,FTPFile ftpFile, String relativeLocalPath,String relativeRemotePath) { 131 if (ftpFile.isFile()) { 132 if (ftpFile.getName().indexOf("?") == -1) { 133 OutputStream outputStream = null; 134 try { 135 String f= new String(ftpFile.getName().getBytes("GBK"), "iso-8859-1"); 136 File locaFile= new File(relativeLocalPath+ ftpFile.getName()); 137 //判断文件是否存在,存在则返回 138 if(locaFile.exists()){ 139 return; 140 }else{ 141 outputStream = new FileOutputStream(relativeLocalPath+ ftpFile.getName()); 142 ftpClient.retrieveFile(new String(ftpFile.getName().getBytes("GBK"),"ISO-8859-1"), outputStream); 143 outputStream.flush(); 144 outputStream.close(); 145 } 146 } catch (Exception e) { 147 logger.error("异常信息:"+e); 148 } finally { 149 try { 150 if (outputStream != null){ 151 outputStream.close(); 152 } 153 } catch (IOException e) { 154 logger.error("输出文件流异常"); 155 } 156 } 157 } 158 } 159 } 160 161 }
调用处:
FtpUtils.uploadFTP(req);
Ftp f=new Ftp();
f.setIpAddr(DataBaseConst.FTP_FEE_IP);
f.setUserName(DataBaseConst.FTP_FEE_USERNAME);
f.setPwd(DataBaseConst.FTP_FEE_PASSWORD);
String ftpPath = DataBaseConst.FTP_FEE_PATH + newFilePath + currDate8 + "/";
FtpRequest req = new FtpRequest();
req.setIp(DataBaseConst.FTP_FEE_IP);
req.setPort(DataBaseConst.FTP_FEE_PORT);
req.setUserName(DataBaseConst.FTP_FEE_USERNAME);
req.setPwd(DataBaseConst.FTP_FEE_PASSWORD);
req.setDownloadPath(DataBaseConst.FTP_FEE_PATH + newFilePath);
req.setFileName(branchFileName);
req.setLocalPath(localPath);
FtpUtils.startDown(f, "e:/", ftpPath,req);
代码我也没怎么优化,我贴这也是为了提醒自己下载的时候乱码怎么解决
springmvc+mybatis+html 下将查询数据以excell形式上传到ftp(下)