文件操作

import java.io.*;import java.util.zip.ZipEntry;import java.util.zip.ZipOutputStream;/** * Created by zzr on 2017/5/15. */public class FileUtil {    public static void main(String[] args) throws Exception {        File file = new File("F:\\zzr-bak");        createZip("F:\\ccc.zip",file.listFiles());    }    /**     * 移动 文件或者文件夹     * @param oldPath     * @param newPath     * @throws IOException     */    public static void moveTo(String oldPath,String newPath) throws IOException {        copyFile(oldPath,newPath);        deleteFile(oldPath);    }    /**     * 删除文件     * @param filePath     */    public static void deleteFile(String filePath){        File file = new File(filePath);        if(!file.exists()){            return;        }        if(file.isDirectory()){            File[] files = file.listFiles();            for (File f : files){                deleteFile(f.getAbsolutePath());            }        }        file.delete();    }    /**     * copy复制文件或者文件夹     * @param oldPath     * @param newPath     */    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()){//如果是文件夹                File newPathDir = new File(newPath);                newPathDir.mkdirs();                File[] oldFiles = oldFile.listFiles();                if(oldFiles != null && oldFiles.length > 0){                    for (File file : oldFiles){                        copyFile(file.getAbsolutePath(),newPath.endsWith(File.separator) ? newPath+file.getName() : newPath+File.separator+file.getName());                    }                }            }else{                InputStream inputStream = new FileInputStream(oldFile);                OutputStream outputStream = new FileOutputStream(newPath);                write2Out(inputStream,outputStream);                inputStream.close();                outputStream.close();            }        }    }    /**     * 重命名文件     * @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 ;    }    /**     * 压缩多个文件。     * @param zipFileName 压缩输出文件名     * @param files 需要压缩的文件     * @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(); // 输出流关闭            }        }        return outFile;    }    /**     * 压缩单个文件     * @param zipFileName 压缩输出文件名     * @param inputFile 需要压缩的文件     * @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(); // 输出流关闭            }        }        return outFile;    }    private static void zip(ZipOutputStream out, File f, String base,BufferedOutputStream bo) throws Exception { // 方法重载        if (f.isDirectory()) {            File[] fl = f.listFiles();            if ( fl == null ||  fl.length == 0) {                out.putNextEntry(new ZipEntry(base + "/")); // 创建创建一个空的文件夹            }else{                for (int i = 0; i < fl.length; i++) {                    zip(out, fl[i], base + "/" + fl[i].getName(), bo); // 递归遍历子文件夹                }            }        } else {            out.putNextEntry(new ZipEntry(base)); // 创建zip压缩进入 base 文件            System.out.println(base);            BufferedInputStream bi = new BufferedInputStream(new FileInputStream(f));            try {                write2Out(bi,out) ;            } catch (IOException e) {                //Ignore            }finally {                bi.close();// 输入流关闭            }        }    }    /**     * 写流     * @param inputStream     * @param outputStream     * @throws IOException     */    public static void write2Out(InputStream inputStream, OutputStream outputStream) throws IOException {        byte[] b = new byte[1024];        int c = 0;        while ((c = inputStream.read(b)) != -1){            outputStream.write(b,0,c);            outputStream.flush();        }        outputStream.flush();    }}