FileUtil.java

import java.io.*;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

/**
 * 檔案操作
 * Created by heavenick on 2015/7/8.
 */
public class FileUtil {

    public static void main(String[] args) throws IOException {
        copyFile("E:\\upload\\create\\1436144988371_JL33041594.xml","E:\\test\\upload");
//        deleteFile("E:\\test\\upload\\");
    }    /**
     * 移動 檔案或者資料夾
     * @param oldPath
     * @param newPath
     * @throws IOException
     */
    public static void moveTo(String oldPath,String newPath) throws IOException {
        copyFile(oldPath,newPath);
        deleteFile(oldPath);
    }

    /**
     * 刪除 檔案或者資料夾
     * @param filePath
     */
    public static void deleteFile(String filePath){
        File file = new File(filePath);
        if (!file.exists()) {
            return;
        }
        if (file.isDirectory() ) {
            File[] list = file.listFiles();

            for (File f : list) {
                deleteFile(f.getAbsolutePath()) ;
            }
        }
        file.delete();
    }

    /**
     * 複製 檔案或者資料夾
     * @param oldPath
     * @param newPath
     * @throws IOException
     */
    public static void  copyFile(String oldPath ,String newPath ) throws IOException {
        System.out.println("copy file from [" + oldPath + "] to [" + newPath +"]");

        File oldFile = new File(oldPath) ;
        if  (oldFile.exists())  {

            if(oldFile.isDirectory()){ // 如果是資料夾
                File newPathDir = new File(newPath);
                newPathDir.mkdirs();
                File[] lists = oldFile.listFiles() ;
                if(lists != null && lists.length > 0 ){
                    for (File file : lists) {
                        copyFile(file.getAbsolutePath(), newPath.endsWith(File.separator) ? newPath + file.getName() : newPath + File.separator + file.getName()) ;
                    }
                }
            }else {
                InputStream  inStream  =  new  FileInputStream(oldFile);  //讀入原檔案
                FileOutputStream  fs  =  new  FileOutputStream(newPath);
                write2Out(inStream ,fs) ;
                inStream.close();
            }
        }
    }

    /**
     * 重新命名檔案
     * @param file
     * @param name
     * @return
     */
    public static File renameFile(File file , String name ){
        String fileName = file.getParent()  + File.separator + name ;
        File dest = new File(fileName);
        file.renameTo(dest) ;
        return dest ;
    }

    /**
     * 壓縮多個檔案。
     * @param zipFileName 壓縮輸出檔名
     * @param files 需要壓縮的檔案
     * @return
     * @throws Exception
     */
    public static File createZip(String zipFileName, File... files) throws Exception {
        File outFile = new File(zipFileName) ;
        ZipOutputStream out = null;
        BufferedOutputStream bo = null;
        try {
            out = new ZipOutputStream(new FileOutputStream(outFile));
            bo = new BufferedOutputStream(out);

            for (File file : files) {
                zip(out, file, file.getName(), bo);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }finally {
            try {
                bo.close();
            } finally {
                out.close(); // 輸出流關閉
            }
        }
        return outFile;
    }

    /**
     *
     * @param zipFileName 壓縮輸出檔名
     * @param inputFile 需要壓縮的檔案
     * @return
     * @throws Exception
     */
    public static File createZip(String zipFileName, File inputFile) throws Exception {
        File outFile = new File(zipFileName) ;
        ZipOutputStream out = null;
        BufferedOutputStream bo = null;
        try {
            out = new ZipOutputStream(new FileOutputStream(outFile));
            bo = new BufferedOutputStream(out);
            zip(out, inputFile, inputFile.getName(), bo);
        } catch (Exception e) {
            e.printStackTrace();
        }finally {
            try {
                bo.close();
            } finally {
                out.close(); // 輸出流關閉
            }
        }
        return outFile;
    }

    private static void zip(ZipOutputStream out, File f, String base,BufferedOutputStream bo) throws Exception { // 方法過載
        if (f.isDirectory()) {
            File[] fl = f.listFiles();
            if ( fl == null ||  fl.length == 0) {
                out.putNextEntry(new ZipEntry(base + "/")); // 建立建立一個空的資料夾
            }else{
                for (int i = 0; i < fl.length; i++) {
                    zip(out, fl[i], base + "/" + fl[i].getName(), bo); // 遞迴遍歷子資料夾
                }
            }

        } else {
            out.putNextEntry(new ZipEntry(base)); // 建立zip壓縮排入 base 檔案
            System.out.println(base);
            BufferedInputStream bi = new BufferedInputStream(new FileInputStream(f));

            try {
                write2Out(bi,out) ;
            } catch (IOException e) {
                //Ignore
            }finally {
                bi.close();// 輸入流關閉
            }
        }
    }

    private static void write2Out(InputStream input , OutputStream out) throws IOException {
        byte[] b = new byte[1024];
        int c = 0 ;
        while ( (c = input.read(b)) != -1 ) {
            out.write(b,0,c);
            out.flush();
        }
        out.flush();
    }
}