Java扫描指定文件路径下的文件并且递归扫描其子目录下的所有文件

　　本文主要实现了扫描指定文件路径下的文件，递归扫描其子目录下的所有文件信息，示例文件为：

　　要求将后缀为.dat的文件夹信息也写入到数据库中，然后将.chk文件解析，将文件中对应的内容读出来写入到数据库，对应类为ChkFileParseFactroy，本文文件发现代码为：

 package com.src.service.impl;

 import java.io.File;
 import java.net.InetAddress;
 import java.net.NetworkInterface;
 import java.net.SocketException;
 import java.net.UnknownHostException;
 import java.text.SimpleDateFormat;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Date;
 import java.util.Enumeration;
 import java.util.LinkedHashMap;
 import java.util.Map;
 import java.util.Set;

 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;

 import com.src.dao.ChkFileDao;
 import com.src.dao.FileDao;
 import com.src.dao.impl.ChkFileDaoImpl;
 import com.src.dao.impl.FileDaoImpl;
 import com.src.factory.ChkFileParseFactroy;
 import com.src.service.FoundFileService;
 import com.src.util.Config;
 import com.src.util.UUIDUtil;

 /**
  * @ClassName: FoundFileServiceImpl
  * @Description: 扫描文件
  * @date Aug 24, 2014 1:26:18 AM
  */
 public class FoundFileServiceImpl implements FoundFileService {

     private static Logger logger = LoggerFactory.getLogger(FoundFileServiceImpl.class);
     private static String interDir;

     /**
      * @Title: foundFile
      * @Description: 获取接口文件目录
      * @最后修改时间：Aug 24, 2014 1:26:50 AM
      */
     public void foundFile() {
         interDir = Config.getInstance().interDir;
         if (!isExist(interDir)) {
             logger.info("The file path " + interDir + " does not exists.");
         } else {
             logger.info("The current scanning directory: " + interDir);
             foundFile(interDir);
         }
     }

     /**
      * @Title: foundFile
      * @Description: 获取接口文件目录下的文件列表
      * @最后修改时间：Aug 24, 2014 1:27:40 AM
      * @param rootStr
      */
     public void foundFile(String rootStr) {

         String host = Config.getInstance().host; // 获取配置文件中的IP地址

         File root = new File(rootStr);
         File[] file = root.listFiles();
         SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

         FileDao fileDao = new FileDaoImpl();
         ChkFileDao chkFileDao = new ChkFileDaoImpl();

         /** 接口文件变量 */
         String id = null; // UUID
         String interNo = null; // 接口号
         String opTime; // 数据日期
         String interFileName; // 源接口文件名
         String sourceDir = null; // 源接口文件路径
         String fileSize; // 源接口文件大小
         String updateTime; // 源接口文件最后修改时间
         int status = 6; // 接口文件FTP状态
         String loadStatus = ""; // 接口文件Load状态

         /** CHK文件变量 */
         String totalNum; // 接口记录总数
         String chkFileSize; // 接口文件总大小
         int chkFileNum = 0; // 接口文件个数
         String ftpStatus = ""; // FTP状态

         for (File f : file) {
             interFileName = f.getName(); // 获取文件名
             logger.info("The current scan the file: " + interFileName);

             id = UUIDUtil.getUUID(); // 获取ID, Unique
             sourceDir = f.getAbsolutePath().toString().replace("\\", "/");

             if (interFileName.endsWith(".dat") || interFileName.endsWith(".DAT")) {
                 updateTime = sdf.format(new Date(f.lastModified())); // 获取接口文件最后修改时间
                 String interID = interFileName.substring(11, 15); // 获取6位接口号
                 List<Map<String, String>> list = fileDao.getInterNoByID(interID);

                 for (Map<String, String> map : list) {
                     interNo = map.get("FULLINTERCODE");
                 }

                 if ("M".equalsIgnoreCase(interNo.substring(0, 1))) {
                     opTime = interFileName.substring(0, 6);
                 } else {
                     opTime = interFileName.substring(0, 8);
                 }

                 if (-1 != fileDao.insert(id, interFileName,updateTime, interNo, opTime, sourceDir, host,loadStatus, status)) {
                     logger.info(" The inter file " + interFileName + " successfully logged into the database.");
                 } else {
                     logger.info(" The inter file " + interFileName + " already exists in the database.");
                 }

             }

             if (f.isFile()) {

                 if (interFileName.endsWith(".avl") || interFileName.endsWith(".AVL")) {
                     fileSize = Long.toString(f.length()); // 获取文件大小
                     updateTime = sdf.format(new Date(f.lastModified())); // 获取接口文件最后修改时间
                     interNo = interFileName.substring(0, 6); // 获取6位接口号
                     opTime = getOpTime(interFileName); // 获取操作时间

                     if (-1 != fileDao.insert(id, interFileName, updateTime, interNo, opTime, sourceDir, fileSize, host, loadStatus, status)) {
                         logger.info(" The inter file " + interFileName + " successfully logged into the database.");
                     } else {
                         logger.info(" The inter file " + interFileName + " already exists in the database.");
                     }

                 } else if (interFileName.endsWith(".chk") || interFileName.endsWith(".CHK")) {
                     ChkFileParseFactroy chkFileParse = new ChkFileParseFactroy();
                     Map<String, String> chkFileMap = new LinkedHashMap<String, String>();
                     chkFileMap = chkFileParse.fileParsing(f);

                     opTime = getOpTime(interFileName); // 获取操作时间
                     updateTime = sdf.format(new Date()); // 获取更新时间：系统当前时间
                     interNo = interFileName.substring(0, 6);
                     chkFileNum = Integer.valueOf(chkFileMap.get("fileNum"));
                     totalNum = chkFileMap.get("totalNum");
                     chkFileSize = chkFileMap.get("fileSize");

                     /**
                      * 根据interNo和opTime字段判断表中是否存在该记录
                      */
                     if (!chkFileDao.query(interNo, opTime)) {
                         chkFileDao.insert(id, interNo, opTime, chkFileNum, totalNum, chkFileSize, sourceDir, updateTime, ftpStatus, loadStatus);
                         logger.info(" The CHK file " + interFileName + " successfully logged into the database.");
                     } else {
                         logger.info(" The CHK file " + interFileName + " already exists in the database.");
                     }

                 } else {
                     logger.info("The file " + interFileName + " is illegal, pass it.");
                 }
             } else if (f.isDirectory()) {
                 foundFile(f.toString());
             }

         }
     }

     /**
      * @Title: isExist
      * @Description: 判断文件目录是否存在
      * @最后修改时间：Aug 28, 2014 10:54:13 AM
      * @param filePath
      * @return boolean 返回类型
      */
     public static boolean isExist(String filePath) {
         boolean exists = true;
         File file = new File(filePath);
         if (!file.exists()) {
             exists = false;
         }
         return exists;
     }

     /**
      *
      * @Title: unifiedSeparator
      * @Description: 获取文件路径，统一格式全部都以分隔符结束
      * @最后修改时间：Aug 31, 2014 12:59:54 AM
      * @param interDirectory
      * @return String 返回类型
      */
     public static String unifiedSeparator(String interDirectory) {
         String separator = "/";

         if (interDirectory.endsWith(separator)) {
             return interDirectory;
         } else {
             return interDirectory + separator;
         }
     }

     /**
      * @Title: getOpTime
      * @Description: 判断是日接口还是月接口，并获取相应的日期;
      * 月接口：例M24289201408231155 非月接口：A/I/P，I0606920140820230045
      * @最后修改时间：Aug 31, 2014 1:00:16 AM
      * @param interDirectory
      * @return String 返回类型
      */
     public static String getOpTime(String interDirectory) {
         String opTimeString = null;
         try {
             if ("M".equalsIgnoreCase(interDirectory.substring(0, 1))) {
                 opTimeString = interDirectory.substring(6, 12);
             } else {
                 opTimeString = interDirectory.substring(6, 14);
             }
         } catch (Exception e) {
             logger.info("Failure to obtain the operating time: "
                     + e.getMessage());
         }
         return opTimeString;
     }

 }

示例演示存储为：

.dat后缀的文件夹和.avl文件存到inter_file_log表中：

.chk文件存到inter_log表中：

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