package io.util;

import java.io.*;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;


public class FileUtil {

    public static final int BUFFER_SIZE = 4096;


    /**
     * formatPath 轉義檔案目錄
     *
     * @param
 
 path
     * @return
     */
    public static String formatPath(String path) {
        return path.replaceAll("\\\\", "/");
    }

    /**
     * combainPath檔案路徑合併
     *
     * @param eins
     * @param zwei
     * @return
     */
    public static String combainPath(String eins, String zwei) {
        String dori = ""
 
;
        eins = null == eins ? "" : formatPath(eins);
        zwei = null == zwei ? "" : formatPath(zwei);
        if (!eins.endsWith("/") && zwei.indexOf("/") != 0) {
            dori = eins + "/" + zwei;
        } else {
            dori = (eins + zwei).replaceAll("//", "/");
        }
        return
 
 dori;
    }

    /**
     * list2Array 列表轉換陣列
     *
     * @param list
     * @return
     */
    public static String[] list2Array(List list) {
        String array[] = (String[]) list.toArray(new String[list.size()]);
        return array;
    }

    /**
     * cp 複製檔案
     *
     * @param source
     * @param destination
     * @param loop
     * @return
     */
    public static List<File> cp(String source, String destination, boolean loop) {
        List<File> list = new ArrayList();
        try {
            File srcFile = new File(source);
            File desFile = new File(destination);
            list.addAll(cp(srcFile, desFile, loop));
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
        return list;
    }

    public static void j2log(Object o, Object o1, Exception ex) {
        ex.printStackTrace();
    }

    /**
     * cp 複製檔案
     *
     * @param source
     * @param destination
     * @param loop
     * @return
     */
    public static List<File> cp(File source, File destination, boolean loop) {
        List<File> list = new ArrayList();
        try {
            if (!source.exists() || source.isDirectory()) {
                throw new FileNotFoundException();
            }
            list.add(cp(source, destination));
            if (loop) {
                String[] subFile = source.list();
                for (String subPath : subFile) {
                    String src = combainPath(source.getPath(), subPath);//子檔案原檔案路徑
                    String des = combainPath(destination.getPath(), subPath);//子檔案目標路徑
                    File subfile = new File(src);
                    if (subfile.isFile()) {
                        list.add(cp(src, des));
                    } else if (subfile.isDirectory() && loop) {
                        list.addAll(cp(src, des, loop));
                    }
                }
            }
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
        return list;
    }

    /**
     * 複製資料夾
     *
     * @param sourceDir
     * @param targetDir
     * @throws IOException
     */
    public static void copyDirectiory(String sourceDir, String targetDir)
            throws IOException {
        // 新建目標目錄
        (new File(targetDir)).mkdirs();
        // 獲取原始檔夾當前下的檔案或目錄
        File[] file = (new File(sourceDir)).listFiles();
        for (int i = 0; i < file.length; i++) {
            if (file[i].isFile()) {
                // 原始檔
                File sourceFile = file[i];
                // 目標檔案
                File targetFile = new File(new File(targetDir)
                        .getAbsolutePath()
                        + File.separator + file[i].getName());
                if (sourceFile.getName().indexOf(".vax") < 0)
                    cp(sourceFile, targetFile);
            }
            if (file[i].isDirectory()) {
                // 準備複製的原始檔夾
                String dir1 = sourceDir + "/" + file[i].getName();
                // 準備複製的目標資料夾
                String dir2 = targetDir + "/" + file[i].getName();
                copyDirectiory(dir1, dir2);
            }
        }
    }

    /**
     * cp 單檔案複製檔案
     *
     * @param source
     * @param destination
     * @return
     */
    public static File cp(String source, String destination) {
        File desFile = null;
        try {
            File srcFile = new File(source);
            desFile = new File(destination);
            desFile = cp(srcFile, desFile);
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
        return desFile;
    }

    /**
     * cp 單檔案複製檔案
     *
     * @param source
     * @param destination
     * @return
     */
    public static File cp(File source, File destination) {
        FileInputStream in = null;
        FileOutputStream out = null;
        FileChannel inc = null;
        FileChannel outc = null;
        try {
            if (!source.exists() || source.isDirectory()) {
                throw new FileNotFoundException();
            }
            if (source.getPath().equals(destination.getPath())) {
                return source;
            }
            long allbytes = du(source, false);
            if (!destination.exists()) {
                destination.createNewFile();
            }
            in = new FileInputStream(source.getPath());
            out = new FileOutputStream(destination);
            inc = in.getChannel();
            outc = out.getChannel();
            ByteBuffer byteBuffer = null;
            long length = 2097152;//基本大小，預設2M
            long _2M = 2097152;
            while (inc.position() < inc.size()) {
                if (allbytes > (64 * length)) {//如果檔案大小大於128M 快取改為64M
                    length = 32 * _2M;
                } else if (allbytes > (32 * length)) {//如果檔案大小大於64M 快取改為32M
                    length = 16 * _2M;
                } else if (allbytes > (16 * length)) {//如果檔案大小大於32M 快取改為16M
                    length = 8 * _2M;
                } else if (allbytes > (8 * length)) {//如果檔案大小大於16M 快取改為8M
                    length = 4 * _2M;
                } else if (allbytes > (4 * length)) {//如果檔案大小大於8M 快取改為4M
                    length = 2 * _2M;
                } else if (allbytes > (2 * length)) {//如果檔案大小大於4M 快取改為2M
                    length = _2M;
                } else if (allbytes > (length)) {//如果檔案大小大於2M 快取改為1M
                    length = _2M / 2;
                } else if (allbytes < length) {//如果檔案小於基本大小，直接輸出
                    length = allbytes;
                }
                allbytes = inc.size() - inc.position();
                byteBuffer = ByteBuffer.allocateDirect((int) length);
                inc.read(byteBuffer);
                byteBuffer.flip();
                outc.write(byteBuffer);
                outc.force(false);
            }
        } catch (Exception ex) {
            j2log(null, null, ex);
        } finally {
            try {
                if (null != inc) {
                    inc.close();
                }
                if (null != outc) {
                    outc.close();
                }
                if (null != in) {
                    in.close();
                }
                if (null != out) {
                    out.close();
                }
            } catch (Exception ex) {
                j2log(null, null, ex);
            }
        }
        return destination;
    }

    /**
     * rename 檔案重新命名
     *
     * @param filePath
     * @param from
     * @param to
     * @return
     */
    public static File rename(String filePath, String from, String to) {
        File newFile = null;
        try {
            File oldFile = new File(combainPath(filePath, from));
            newFile = new File(combainPath(filePath, to));
            rename(newFile, oldFile);
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
        return newFile;
    }

    /**
     * rename 檔案重新命名
     *
     * @param to
     * @param from
     * @return
     */
    public static File rename(File from, File to) {
        try {
            String newPath = to.getPath();
            String oldPath = from.getPath();
            if (!oldPath.equals(newPath)) {
                if (!to.exists()) {
                    from.renameTo(to);
                }
            }
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
        return to;
    }

    /**
     * mv 移動檔案
     *
     * @param fileName
     * @param source
     * @param destination
     * @param cover
     */
    public static void mv(String fileName, String source, String destination, boolean cover) {
        try {
            if (!source.equals(destination)) {
                File oldFile = new File(combainPath(source, fileName));
                File newFile = new File(combainPath(destination, fileName));
                mv(oldFile, newFile, cover);
            }
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
    }

    /**
     * mv 移動檔案
     *
     * @param source
     * @param destination
     * @param cover
     */
    public static void mv(String source, String destination, boolean cover) {
        try {
            if (!source.equals(destination)) {
                File oldFile = new File(source);
                File newFile = new File(destination);
                mv(oldFile, newFile, cover);
            }
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
    }

    /**
     * mv 移動檔案
     *
     * @param source
     * @param destination
     * @param cover
     */
    public static void mv(File source, File destination, boolean cover) {
        try {
            if (!source.exists()) {
                throw new FileNotFoundException();
            }
            StringBuilder fileName = new StringBuilder(source.getName());
            if (!cover && source.getPath().equals(destination.getPath())) {
                if (fileName.indexOf(".") > 0) {
                    fileName.insert(fileName.lastIndexOf("."), "_副本");
                } else {
                    fileName.append("_副本");
                }
                cp(source, new File(combainPath(source.getParent(), fileName.toString())));
            } else {
                source.renameTo(destination);
            }
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
    }

    /**
     * extensions 獲取副檔名資訊
     *
     * @param filePath
     * @param fileName
     * @return
     */
    public static String[] extensions(String filePath, String fileName) {
        String[] extension = {};
        try {
            String fullPath = combainPath(filePath, fileName);
            File file = new File(fullPath);
            extensions(file);
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
        return extension;
    }

    /**
     * extensions 獲取副檔名資訊
     *
     * @param fullPath
     * @return
     */
    public static String[] extensions(String fullPath) {
        String[] extension = {};
        try {
            File file = new File(fullPath);
            extensions(file);
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
        return extension;
    }

    /**
     * 判斷目錄是否存在
     *
     * @param strDir
     * @return
     */
    public static boolean existsDirectory(String strDir) {
        File file = new File(strDir);
        return file.exists() && file.isDirectory();
    }

    /**
     * 判斷檔案是否存在
     *
     * @param strDir
     * @return
     */
    public static boolean existsFile(String strDir) {
        File file = new File(strDir);
        return file.exists();
    }


    /**
     * 得到檔案的大小
     *
     * @param fileName
     * @return
     */
    public static int getFileSize(String fileName) {

        File file = new File(fileName);
        FileInputStream fis = null;
        int size = 0;
        try {
            fis = new FileInputStream(file);
            size = fis.available();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return size;
    }

    /**
     * extensions 獲取副檔名資訊
     *
     * @param file
     * @return
     */
    public static String[] extensions(File file) {
        String[] extension = {};
        try {
            if (file.isFile()) {
                String fileName = file.getName();
                if (fileName.lastIndexOf(".") >= 0) {
                    int lastIndex = fileName.lastIndexOf(".");
                    extension[0] = String.valueOf(lastIndex);//副檔名的“.”的索引
                    extension[1] = fileName.substring(lastIndex + 1);//副檔名
                    extension[2] = fileName.substring(0, lastIndex);//檔名
                }
            }
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
        return extension;
    }

    /**
     * ls 遍歷檔案
     *
     * @param filePath
     * @param loop
     * @return
     */
    public static List<File> ls(String filePath, boolean loop) {
        List<File> list = new ArrayList();
        try {
            File file = new File(filePath);
            list.addAll(ls(file, loop));
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
        return list;
    }

    /**
     * ls 遍歷檔案
     *
     * @param file
     * @param loop
     * @return
     */
    public static List<File> ls(File file, boolean loop) {
        List<File> list = new ArrayList();
        try {
            list.add(file);
            if (!file.isDirectory()) {
                list.add(file);
            } else if (file.isDirectory()) {
                File[] subList = file.listFiles();
                subList = filesSort(subList, true);
                for (File subFile : subList) {
                    if (subFile.isDirectory() && loop) {
                        list.addAll(ls(subFile.getPath(), loop));
                    } else {
                        list.add(subFile);
                    }
                }
            }
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
        return list;
    }

    /**
     * filesSort 檔案排序（預設升序）
     *
     * @return
     */
    public static File[] filesSort(File[] inFiles, boolean asc) {
        List<String> files = new ArrayList();
        List<String> dirs = new ArrayList();
        for (File subFile : inFiles) {
            if (subFile.isDirectory()) {
                dirs.add(subFile.getPath());
            } else if (subFile.isFile()) {
                files.add(subFile.getPath());
            }
        }
        String[] fileArray = {};
        if (files.size() > 0) {
            fileArray = list2Array(files);
            Arrays.sort(fileArray);
            if (!asc) {
                Arrays.sort(fileArray, Collections.reverseOrder());
            }
        }
        String[] dirArray = {};
        if (dirs.size() > 0) {
            dirArray = list2Array(dirs);
            Arrays.sort(dirArray);
            if (!asc) {
                Arrays.sort(dirArray, Collections.reverseOrder());
            }
        }
        return concat2FileArray(fileArray, dirArray);
    }

    /**
     * concat2FileArray 合併檔案陣列
     *
     * @param old1
     * @param old2
     * @return
     */
    public static File[] concat2FileArray(String[] old1, String[] old2) {
        File[] newArray = new File[old1.length + old2.length];
        for (int i = 0, n = old1.length; i < n; i++) {
            newArray[i] = new File(old1[i]);
        }
        for (int i = 0, j = old1.length, n = (old1.length + old2.length); j < n; i++, j++) {
            newArray[j] = new File(old2[i]);
        }
        return newArray;
    }

    /**
     * read 讀取文字檔案
     *
     * @param filePath
     * @param fileName
     * @param charset
     * @return
     */
    public static StringBuilder read(String filePath, String fileName, String charset) {
        StringBuilder sb = new StringBuilder();
        try {
            String fullPath = combainPath(filePath, fileName);
            File file = new File(fullPath);
            sb.append(FileUtil.tail(file, false, 0, charset));
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
        return sb;
    }

    /**
     * read 讀取文字檔案
     *
     * @param fullPath
     * @param charset
     * @return
     */
    public static StringBuilder read(String fullPath, String charset) {
        StringBuilder sb = new StringBuilder();
        try {
            File file = new File(fullPath);
            sb.append(FileUtil.tail(file, false, 0, charset));
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
        return sb;
    }

    /**
     * read 讀取文字檔案
     *
     * @param file
     * @param charset
     * @return
     */
    public static StringBuilder read(File file, String charset) {
        StringBuilder sb = new StringBuilder();
        try {
            sb.append(FileUtil.tail(file, false, 0, charset));
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
        return sb;
    }

    /**
     * find 讀取文字檔案指定行
     *
     * @param filePath
     * @param fileName
     * @param line
     * @param charset
     * @return
     */
    public static StringBuilder find(String filePath, String fileName, int line, String charset) {
        StringBuilder sb = new StringBuilder();
        try {
            String fullPath = combainPath(filePath, fileName);
            File file = new File(fullPath);
            sb.append(FileUtil.tail(file, true, line, charset));
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
        return sb;
    }

    /**
     * find 讀取文字檔案指定行
     *
     * @param fullPath
     * @param line
     * @param charset
     * @return
     */
    public static StringBuilder find(String fullPath, int line, String charset) {
        StringBuilder sb = new StringBuilder();
        try {
            File file = new File(fullPath);
            sb.append(FileUtil.tail(file, true, line, charset));
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
        return sb;
    }

    /**
     * find 讀取文字檔案指定行
     *
     * @param file
     * @param line
     * @param charset
     * @return
     */
    public static StringBuilder find(File file, int line, String charset) {
        StringBuilder sb = new StringBuilder();
        try {
            sb.append(FileUtil.tail(file, true, line, charset));
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
        return sb;
    }

    /**
     * tail 讀取文字檔案
     *
     * @param filePath
     * @param fileName
     * @param charset
     * @param find
     * @param line
     * @return
     */
    public static StringBuilder tail(String filePath, String fileName, boolean find, int line, String charset) {
        StringBuilder sb = new StringBuilder();
        try {
            String fullPath = combainPath(filePath, fileName);
            File file = new File(fullPath);
            sb.append(FileUtil.tail(file, find, line, charset));
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
        return sb;
    }

    /**
     * tail 讀取文字檔案
     *
     * @param fullPath
     * @param charset
     * @param find
     * @param line
     * @return
     */
    public static StringBuilder tail(String fullPath, boolean find, int line, String charset) {
        StringBuilder sb = new StringBuilder();
        try {
            File file = new File(fullPath);
            sb.append(FileUtil.tail(file, find, line, charset));
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
        return sb;
    }

    /**
     * tail 讀取文字檔案
     *
     * @param file
     * @param charset
     * @param find
     * @param line
     * @return
     */
    public static StringBuilder tail(File file, boolean find, int line, String charset) {
        StringBuilder sb = new StringBuilder();
        BufferedReader bufferReader = null;
        if (null == charset || "".equals(charset)) {
            charset = "UTF-8";
        }
        try {
            if (!file.exists() || file.isDirectory()) {
                throw new FileNotFoundException();
            }
            String fullPath = file.getPath();
            bufferReader = new BufferedReader(new InputStreamReader(new FileInputStream(fullPath), charset));
            String temp;
            for (int i = 0; (temp = bufferReader.readLine()) != null; i++) {
                if (!find || line == i) {
                    sb.append(temp);
                }
            }
        } catch (Exception ex) {
            j2log(null, null, ex);
        } finally {
            if (null != bufferReader) {
                try {
                    bufferReader.close();
                } catch (IOException ex) {
                    j2log(null, null, ex);
                }
            }
        }
        return sb;
    }

    /**
     * sed 讀取文字檔案
     *
     * @param filePath
     * @param fileName
     * @param charset
     * @return
     */
    public static List<String> sed(String filePath, String fileName, String charset) {
        List<String> list = new ArrayList();
        try {
            String fullPath = combainPath(filePath, fileName);
            File file = new File(fullPath);
            list.addAll(FileUtil.sed(file, charset));
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
        return list;
    }

    /**
     * sed 讀取文字檔案
     *
     * @param fullPath
     * @param charset
     * @return
     */
    public static List<String> sed(String fullPath, String charset) {
        List<String> list = new ArrayList();
        try {
            File file = new File(fullPath);
            list.addAll(FileUtil.sed(file, charset));
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
        return list;
    }

    /**
     * sed 讀取文字檔案
     *
     * @param file
     * @param charset
     * @return
     */
    public static List<String> sed(File file, String charset) {
        List<String> list = new ArrayList();
        BufferedReader bufferReader = null;
        if (null == charset || "".equals(charset)) {
            charset = "UTF-8";
        }
        try {
            if (!file.exists() || file.isDirectory()) {
                throw new FileNotFoundException();
            }
            String fullPath = file.getPath();
            bufferReader = new BufferedReader(new InputStreamReader(new FileInputStream(fullPath), charset));
            String temp;
            for (int i = 0; (temp = bufferReader.readLine()) != null; i++) {
                list.add(temp);
            }
        } catch (Exception ex) {
            j2log(null, null, ex);
        } finally {
            if (null != bufferReader) {
                try {
                    bufferReader.close();
                } catch (IOException ex) {
                    j2log(null, null, ex);
                }
            }
        }
        return list;
    }

    /**
     * cat 讀取文字檔案
     *
     * @param filePath
     * @param fileName
     * @return
     */
    public static byte[] cat(String filePath, String fileName) {
        byte[] output = {};
        try {
            String fullPath = combainPath(filePath, fileName);
            File file = new File(fullPath);
            output = FileUtil.cat(file);
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
        return output;
    }

    /**
     * cat 讀取文字檔案
     *
     * @param fullPath
     * @return
     */
    public static byte[] cat(String fullPath) {
        byte[] output = {};
        try {
            File file = new File(fullPath);
            output = FileUtil.cat(file);
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
        return output;
    }

    /**
     * cat 讀取文字檔案
     *
     * @param file
     * @return
     */
    public static byte[] cat(File file) {
        InputStream in = null;
        byte[] output = {};
        try {
            if (!file.exists() || file.isDirectory()) {
                throw new FileNotFoundException();
            }
            String fullPath = file.getPath();
            long length = du(file, false);
            long _2M = 2097152;
            byte[] bytes = new byte[(int) length];
            in = new FileInputStream(fullPath);
            for (int count = 0; count != -1; ) {
                if (length > 16 * _2M) {
                    length = 4 * _2M;
                } else if (length > 8 * _2M) {
                    length = 2 * _2M;
                } else if (length > 4 * _2M) {
                    length = _2M;
                } else if (length > 2 * _2M) {
                    length = _2M / 2;
                } else if (length > _2M) {
                    length = _2M / 4;
                } else {
                    length = 4096;
                }
                bytes = new byte[(int) length];
                count = in.read(bytes);
                output = concatArray(bytes, output);
                length = in.available();
            }
        } catch (Exception ex) {
            j2log(null, null, ex);
        } finally {
            if (null != in) {
                try {
                    in.close();
                } catch (Exception ex) {
                    j2log(null, null, ex);
                }
            }
        }
        return output;
    }

    /**
     * 合併陣列
     *
     * @param old1
     * @param old2
     * @return
     */
    public static byte[] concatArray(byte[] old1, byte[] old2) {
        byte[] newArray = new byte[old1.length + old2.length];
        System.arraycopy(old1, 0, newArray, 0, old1.length);
        System.arraycopy(old2, 0, newArray, old1.length, old2.length);
        return newArray;
    }

    /**
     * dd 寫入檔案fullPath內容content
     *
     * @param filePath
     * @param fileName
     * @param content
     * @param isAppend
     */
    public static void dd(String filePath, String fileName, byte[] content, boolean isAppend) {
        try {
            String fullPath = combainPath(filePath, fileName);
            File file = new File(fullPath);
            FileUtil.dd(file, content, isAppend);
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
    }

    /**
     * dd 寫入檔案fullPath內容content
     *
     * @param fullPath
     * @param content
     * @param isAppend
     */
    public static void dd(String fullPath, byte[] content, boolean isAppend) {
        try {
            File file = new File(fullPath);
            FileUtil.dd(file, content, isAppend);
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
    }

    /**
     * dd 寫入檔案fullPath內容content
     *
     * @param file
     * @param content
     * @param isAppend
     */
    public static void dd(File file, byte[] content, boolean isAppend) {
        FileOutputStream fileOutputStream = null;
        try {
            if (!file.exists()) {
                file.createNewFile();
            }
            fileOutputStream = new FileOutputStream(file, isAppend);
            fileOutputStream.write(content);
        } catch (Exception ex) {
            j2log(null, null, ex);
        } finally {
            try {
                if (null != fileOutputStream) {
                    fileOutputStream.close();
                }
            } catch (IOException ex) {
                j2log(null, null, ex);
            }
        }
    }

    /**
     * write 寫檔案內容content到檔案fullPath
     *
     * @param filePath
     * @param fileName
     * @param content
     */
    public static void write(String filePath, String fileName, String content) {
        try {
            String fullPath = combainPath(filePath, fileName);
            File file = new File(fullPath);
            FileUtil.write(file, content, true);
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
    }

    /**
     * write 寫檔案內容content到檔案fullPath
     *
     * @param fullPath
     * @param content
     */
    public static void write(String fullPath, String content) {
        try {
            File file = new File(fullPath);
            FileUtil.write(file, content, true);
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
    }

    /**
     * write 寫檔案內容content到檔案fullPath
     *
     * @param file
     * @param content
     */
    public static void write(File file, String content) {
        try {
            FileUtil.write(file, content, true);
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
    }

    /**
     * write 寫（追加）檔案內容content到檔案fullPath
     *
     * @param filePath
     * @param fileName
     * @param content
     * @param isAppend
     */
    public static void write(String filePath, String fileName, String content, boolean isAppend) {
        try {
            String fullPath = combainPath(filePath, fileName);
            File file = new File(fullPath);
            FileUtil.write(file, content, isAppend);
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
    }

    /**
     * write 寫（追加）檔案內容content到檔案fullPath
     *
     * @param fullPath
     * @param content
     * @param isAppend
     */
    public static void write(String fullPath, String content, boolean isAppend) {
        try {
            File file = new File(fullPath);
            FileUtil.write(file, content, isAppend);
        } catch (Exception ex) {
            j2log(null, null, ex);
        }
    }

    /**
     * write 寫（追加）檔案內容content到檔案fullPath
     *
     * @param file
     * @param content
     * @param isAppend
     */
    public static void write(File file, String content, boolean isAppend) {
        FileWriter fileWriter = null;
        try {
            if (!file.exists()) {
                file.createNewFile();
            }
            fileWriter = new FileWriter(file.getPath(), isAppend);
            fileWriter.write(content);
        } catch (Exception ex) {
            j2log(null, null, ex);
        } finally {
            if (null != fileWriter) {
                try {
                    fileWriter.close();
                } catch (IOException ex) {
                    j2log(null, null, ex);
                }
            }
        }
    }

    /**
     * tail 新增檔案內容content到檔案的index位置
     *
     * @param filePath
     * @param fileName
     * @param content
     * @param index
     */
    public static void tail(String filePath, String fileName, String content, long index) {
        try {
            String fullPath = combainPath(filePath, fileName);
            File file = 
            
  
           

              
              
            
            
相關推薦
			   
            
            
            
 

    

    
    
java-io-檔案相關工具類（全）
     
 
							
							
							package io.util;

import java.io.*;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.util.ArrayList;
i 

  
 

    

    
    
JAVA中的併發工具類（一）----控制併發數的Semaphore
     
 
							
							
							本文使用的Demo可以在我的github中找到。 
前面我們使用執行緒池技術來控制訪問資源的執行緒數目，假設對某一檔案的訪問，我們允許幾十個執行緒來讀他，但是出於某種限制，我們要求只允許10個執行緒可以同時讀該檔案。這就好比十字路口有100輛車想要過馬路，我們只 

  
 

    

    
    
java操作ORACLE資料庫工具類（JDBC）
     
 
                
package com.util;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSe 

  
 

    

    
    
Android 農曆和節氣相關工具類（記錄）
     
 
                                        
                                                
中國農曆相關的工具類，可以獲取當前或者規定日期的農曆，節氣，生肖等。 

LunarCalender.java 
package 

  
 

    

    
    
java常用工具類（三）—— 檔案讀取的操作類
     
  
 定義常用的檔案型別 
 
public class FileType {
    /**
     * 檔案頭型別
     */
    public static final String XML_FILE = "text/xml;charset=UTF-8";
    public static  

  
 

    

    
    
常用工具類（一）：FileUtile 檔案相關操作
     
  
  
  
 常用工具類（一）：FileUtile 檔案相關操作 
 public class FileUtil {
    private static final Logger logger = LoggerFactory.getLogger(FileUtils.class);

    //讀取檔案 

  
 

    

    
    
java之LineNumberReader類，裝飾者模式，列印流，合併流（檔案合併和分割）和第三方工具類（FileNameUtils）
     
 
							
							
							一.LineNumberReader類
public class Kll {
	public static void main(String[] args) throws IOException {
	        File file = new File(" 

  
 

    

    
    
java通過http請求工具類（包含檔案傳輸）
     
 
                package test;import java.io.BufferedReader;import java.io.File;import java.io.IOException;import java.io.InputStreamReader;import java.nio 

  
 

    

    
    
java網路相關工具類（是否有網，是否wifi，開啟網路設定介面）
     
 
								
								            
							
							
							/**
 * 跟網路相關的工具類
 * Created by leven on 2016/10/13.
 */

public class NetUtils {

    private NetUtil 

  
 

    

    
    
史上最全的開發工具類（轉）
     
 scp   dbi   bug   成對   截圖   depend   時間   sre   invoke       API銀行卡管理 → BankCheckcheckBankCard       : 校驗銀行卡卡號是否合法getBankCardCheckCode: 從不含校驗位的銀行卡卡號采用 Luhm 

  
 

    

    
    
java常用工具類（一）—— Map 與 Bean 之間的互相轉換
     
 import net.bytebuddy.implementation.bytecode.Throw;
import org.springframework.cglib.beans.BeanMap;

import java.beans.PropertyDescriptor;
import java.lang 

  
 

    

    
    
java常用工具類（二）—— JSON處理工具類
     
 tor   ast   val   simple   sta   轉換   local   pass   password   package com.springboot.commons.utils;

import com.springboot.commons.scan.JacksonObjectMapp 

  
 

    

    
    
java常用工具類（三）—— Excel 操作工具
     
 import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import java.io 

  
 

    

    
    
java常用工具類（三）—— 文件讀取的操作類
     
 ()   utf-8   cati   解壓縮   操作   char   ringbuf   路徑   except   
定義常用的文件類型

public class FileType {
    /**
     * 文件頭類型
     */
    public static final Stri 

  
 

    

    
    
寫爬蟲所用到的工具類---（3）[檔案]
     
 
							
							
							package Tool;

import java.io.*;
import java.util.ArrayList;
import java.util.List;

/**
 * this is a class that can operation file 

  
 

    

    
    
JAVA常用工具類（一）--------------RedisConfig工具類
     
 
                Redis快取用的越來越多，那麼我們是如何使用的Redis？



一，redis的視覺化app



這個是目前比較流行的redis視覺化app。



這是執行狀態的redis，一共擁有16個數據庫，預設儲存在db0裡面。具體儲存的格式，我在 Redis實用教程----- 

  
 

    

    
    
Java操作JSON的便捷工具類（Gson）
     
 
                
對於JSON資料格式的處理，自開發Java以來，已用過多種JSON的開源工具，用得最好，也用得最High的恐怕要屬Google的Gson了。
特別為它寫了一個工具類，放入常備工具中，方便使用。下面是為GSON 1.5版本重寫的工具類。
依賴包：
slf4j-api-1.6. 

  
 

    

    
    
Java使用POI匯出Excel工具類（反射）
     
 
							
							
							pom.xml:



    <dependency>
      <groupId>org.apache.poi</groupId>
      <artifactId>poi</artifactId&g 

  
 

    

    
    
讀取配置檔案的工具類 （properties檔案和xml檔案）
     
  
 
 讀取properties檔案的工具類 
 

import java.io.File;
import java.io.IOException;
import java.util.Properties;

/**
 * 讀取properties檔案的工具類
 * @author 
 *
 */
pub 

  
 

    

    
    
JAVA工具類（10）--- 隨機生成字串工具類randomUtil
     
 
							
							
							package com.gcloud.common;

import java.util.Random;

/**
 * 隨機數、隨即字串工具
 * Created by charlin on 2017/9/9.
 */
public class RandomU