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@ -1,383 +0,0 @@
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package com.base;
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import java.io.BufferedReader;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileWriter;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.io.RandomAccessFile;
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import java.nio.channels.FileLock;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Random;
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import javax.swing.filechooser.FileSystemView;
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/**
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* @描述 文件操作
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* @author chen
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* @date 2016年8月8日
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* @package com.utils
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*/
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public class FileOperate {
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private final static String localDiskName = "本地磁盘";
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private final static String enlocalDiskName = "Local Disk";
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private final static String CD = "CD";
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private final static String DVD = "DVD";
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public static String usbPath = "";
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/**
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* @功能 获取全部的外部移动硬盘路径
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*
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* @return
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*/
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public static List<String> filterDiskPath() {
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FileSystemView fileSystemView = FileSystemView.getFileSystemView();
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List<String> diskPathName = new ArrayList<String>();
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File[] roots = File.listRoots();
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for (File file : roots) {
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String diskName = fileSystemView.getSystemTypeDescription(file);// 获取磁盘的类型描述信息
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if (diskName.startsWith(localDiskName) || diskName.startsWith(enlocalDiskName) || diskName.contains(CD)
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|| diskName.contains(CD) || diskName.contains(DVD)) // 当磁盘为可移动磁盘时{
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continue;
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diskPathName.add(file.getAbsolutePath());
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}
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return diskPathName;
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}
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/**
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* @功能 创建文件夹
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* @param path
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* 上级目录
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* @param dirName
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* 待创建的目录
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* @return
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*/
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public static int createDir(String path, String dirName) {
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File dirFile = new File(path + "\\" + dirName);
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if (!dirFile.exists()) {
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if (!dirFile.mkdirs()) {
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System.out.println("目录不存在，创建失败！");
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return 2;
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}
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return 1;
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}
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return 0;
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}
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/**
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* @功能 检测数据文件是否完整
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*
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* @param path
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* 文件绝对路径
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* @return
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*/
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public static boolean isFileExists(String path) {
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File file = new File(path);
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if (file.exists())
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return true;
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return false;
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}
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/**
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* @功能 文件是否存在
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*
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* @param name
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* 文件绝对路径
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* @return
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*/
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public static boolean file_dir_exist(String name) {
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try {
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File file = new File(name);
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if (!file.exists()) {
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return false;
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// return true;
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}
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}
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catch (Exception e) {
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// TODO: handle exception
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return false;
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}
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return true;
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}
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/**
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* @功能 随机生成26以内的数字拼接的字符串（？什么用？）
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* @param length
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* 拼接次数
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* @return
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*/
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public static String getRandomString(int length) { // length表示生成字符串的长度
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String base = "abcdefghijklmnopqrstuvwxyz";
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Random random = new Random();
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StringBuffer sb = new StringBuffer();
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for (int i = 0; i < length; i++) {
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int number = random.nextInt(base.length());
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sb.append(base.charAt(number));
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}
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return sb.toString();
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}
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/**
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* @功能 以字符串方式读取文件内容
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* @param fiel_name
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* 文件名
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* @return 字符串
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*/
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public static String read_fileToStr(String fiel_name) {
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String str = "";
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try {
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File file = new File(fiel_name);
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String lineTxt = "";
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InputStreamReader read = new InputStreamReader(new FileInputStream(file), "gbk");// 考虑到编码格式
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BufferedReader bufferedReader = new BufferedReader(read);
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while ((lineTxt = bufferedReader.readLine()) != null) {
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str = str + lineTxt;
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}
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bufferedReader.close();
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read.close();
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}
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catch (Exception e) {
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e.printStackTrace();
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return "Exception";
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}
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return str;
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}
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/**
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* @功能 读取文件路径的各级目录，以数组形式返回
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* @param path_filename
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* 文件或文件夹路径
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* @return 数组
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*/
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public static String get_filename_from_path(String path_filename) {
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String[] strings = path_filename.split("\\\\");
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return strings[strings.length - 1];
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}
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/**
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* @功能 查找dirPath目录下的所有文件
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* @param dirPath
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* 目录
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* @return 所有文件数组
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*/
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public static List<String> findAllFilenameFromPath(String dirPath) {
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ArrayList<String> fileAbsolutePaths = new ArrayList<>();
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FileOperate.findFiles(dirPath, fileAbsolutePaths);
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return fileAbsolutePaths;
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}
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/**
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* @功能 删除目录下所有文件包含文件夹
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* @param dirPath
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* 目录
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* @return
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*/
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public static boolean delAllFileByDir(String dirPath) {
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boolean flag = false;
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File file = new File(dirPath);
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// 判断目录或文件是否存在
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if (!file.exists()) { // 不存在返回 false
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return flag;
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}
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else {
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// 判断是否为文件
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if (file.isFile()) { // 为文件时调用删除文件方法
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return deleteFile(dirPath);
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}
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else { // 为目录时调用删除目录方法
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return deleteDirectory(dirPath);
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}
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}
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}
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/**
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* @功能 写文件
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* @param content
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* 文件内容
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* @param filePathName
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* 文件绝对路径
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*/
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public static void writeFile(List<Object> content, String filePathName) {
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if (null == content) {
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return;
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}
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try {
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FileWriter writer = new FileWriter(filePathName);
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for (Object one : content) {
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writer.write(one.toString());
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writer.write("\r\n");
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}
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writer.close();
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}
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catch (Exception e) {
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// TODO: handle exception
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// e.printStackTrace();
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}
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}
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/**
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* @功能 追加写入写文件
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* @param content
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* @param filePathName
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*/
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public static void appendWriteFile(String content, String filePathName){
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File file = new File(filePathName);
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if (!file.exists() || !file.isFile()) {
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ArrayList<Object> list = new ArrayList<>();
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list.add("系统异常日志\n");
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writeFile(list, filePathName);
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}
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try {
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// 打开一个随机访问文件流，按读写方式
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RandomAccessFile randomFile = new RandomAccessFile(filePathName, "rw");
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// 文件长度，字节数
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long fileLength = randomFile.length();
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// 将写文件指针移到文件尾。
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randomFile.seek(fileLength);
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// randomFile.writeBytes(content);
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//解决中文乱码
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randomFile.write(content.getBytes());
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randomFile.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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/**
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* @功能 锁定文件
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* @param fileName
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* 文件绝对路径
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*/
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public static boolean islockFile(String fileName) {
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Object result = null;
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boolean isSuccess = true;
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try {
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result = tryLock(fileName);
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if (null == result) {
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isSuccess = false;
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}
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}
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catch (IOException e) {
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e.printStackTrace();
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isSuccess = false;
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}
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return isSuccess;
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}
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/**
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* @功能 删文件夹
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* @param dirPath
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* 文件夹路径
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* @return
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*/
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private static boolean deleteDirectory(String dirPath) {
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// 如果sPath不以文件分隔符结尾，自动添加文件分隔符
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if (!dirPath.endsWith(File.separator)) {
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dirPath = dirPath + File.separator;
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}
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File dirFile = new File(dirPath);
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// 如果dir对应的文件不存在，或者不是一个目录，则退出
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if (!dirFile.exists() || !dirFile.isDirectory()) {
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return false;
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}
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boolean flag = true;
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// 删除文件夹下的所有文件(包括子目录)
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File[] files = dirFile.listFiles();
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for (int i = 0; i < files.length; i++) {
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// 删除子文件
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if (files[i].isFile()) {
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flag = deleteFile(files[i].getAbsolutePath());
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if (!flag)
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break;
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} // 删除子目录
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else {
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flag = deleteDirectory(files[i].getAbsolutePath());
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if (!flag)
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break;
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}
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}
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if (!flag)
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return false;
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// 删除当前目录
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if (dirFile.delete()) {
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return true;
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}
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else {
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return false;
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}
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}
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/**
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* @功能 删除文件
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* @param filePath
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* 文件路径
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* @return
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*/
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private static boolean deleteFile(String filePath) {
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boolean flag = false;
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File file = new File(filePath);
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// 路径为文件且不为空则进行删除
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if (file.isFile() && file.exists()) {
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file.delete();
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flag = true;
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}
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return flag;
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}
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/**
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* @功能 查找dirPath目录下的所有文件
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* @param dirPath
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* 目录
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* @param fileAbsolutePaths
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* 所有文件数组
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* @return 所有文件数组
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*/
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private static List<String> findFiles(String dirPath, List<String> fileAbsolutePaths) {
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File file = new File(dirPath);
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// 是文件时
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if (!file.isDirectory()) {
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String path = file.getAbsolutePath();
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fileAbsolutePaths.add(path);
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|
|
|
}
|
|
|
|
|
// 是文件夹时
|
|
|
|
|
else if (file.isDirectory()) {
|
|
|
|
|
String[] filelist = file.list();
|
|
|
|
|
if (null != filelist) {
|
|
|
|
|
int fileNum = filelist.length;
|
|
|
|
|
for (int i = 0; i < fileNum; i++) {
|
|
|
|
|
String tempPath = dirPath + "\\" + filelist[i];
|
|
|
|
|
findFiles(tempPath, fileAbsolutePaths);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
return fileAbsolutePaths;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* @功能 锁定文件
|
|
|
|
|
* @param fileName 文件绝对路径
|
|
|
|
|
* @return 锁
|
|
|
|
|
* @throws IOException
|
|
|
|
|
*/
|
|
|
|
|
@SuppressWarnings("resource")
|
|
|
|
|
private static FileLock tryLock(String fileName) throws IOException {
|
|
|
|
|
File lockF = new File(fileName); // 要锁的文件
|
|
|
|
|
lockF.deleteOnExit(); // 指定在退出时释放锁
|
|
|
|
|
RandomAccessFile file = new RandomAccessFile(lockF, "rws"); // 指定要锁的文件
|
|
|
|
|
FileLock res = null;
|
|
|
|
|
try {
|
|
|
|
|
res = file.getChannel().tryLock(); // 试图取得文件的锁
|
|
|
|
|
}
|
|
|
|
|
catch (Exception e) { // 文件被其它线程锁时抛出此异常
|
|
|
|
|
file.close();
|
|
|
|
|
return null;
|
|
|
|
|
}
|
|
|
|
|
return res;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
}
|
