FileOperate.java源代码

 

package ob;

import java.io.*;

public class FileOperate {
    public FileOperate() {
    }

    /**
     * 新建目录
     *
     * @param folderPath
     *            String 如 c:/fqf
     * @return boolean
     */
    public void newFolder(String folderPath) {
        try {
            File myFilePath = new File(folderPath);
            if (!myFilePath.exists()) {
                myFilePath.mkdir();
            }
        } catch (Exception e) {
            System.out.println("新建目录操作出错 ");
            e.printStackTrace();
        }
    }

    /**
     * 新建文件
     *
     * @param filePathAndName
     *            String 文件路径及名称 如c:/fqf.txt
     * @param fileContent
     *            String 文件内容
     * @return boolean
     */
    public void newFile(String filePathAndName, String fileContent) {
        try {
            File myFilePath = new File(filePathAndName);
            if (!myFilePath.exists()) {
                myFilePath.createNewFile();
            }
            FileWriter resultFile = new FileWriter(myFilePath);
            PrintWriter myFile = new PrintWriter(resultFile);
            myFile.println(fileContent);
            resultFile.close();
        } catch (Exception e) {
            System.out.println("新建文件操作出错 ");
            e.printStackTrace();
        }
    }

    /**
     * 删除文件
     *
     * @param filePathAndName
     *            String 文件路径及名称 如c:/fqf.txt
     * @param fileContent
     *            String
     * @return boolean
     */
    public void delFile(String filePathAndName) {
        try {
            File myDelFile = new File(filePathAndName);
            myDelFile.delete();
        } catch (Exception e) {
            System.out.println("删除文件操作出错 ");
            e.printStackTrace();
        }
    }

    /**
     * 删除文件夹
     *
     * @param filePathAndName
     *            String 文件夹路径及名称 如c:/fqf
     * @param fileContent
     *            String
     * @return boolean
     */
    public void delFolder(String folderPath) {
        try {
            delAllFile(folderPath); // 删除完里面所有内容
            File myFilePath = new File(folderPath);
            myFilePath.delete(); // 删除空文件夹
        } catch (Exception e) {
            System.out.println("删除文件夹操作出错 ");
            e.printStackTrace();
        }
    }

    /**
     * 删除文件夹里面的所有文件
     *
     * @param path
     *            String 文件夹路径 如 c:/fqf
     */
    public void delAllFile(String path) {
        File file = new File(path);
        if (!file.exists()) {
            return;
        }
        if (!file.isDirectory()) {
            return;
        }
        String[] tempList = file.list();
        File temp = null;
        for (int i = 0; i < tempList.length; i++) {
            if (path.endsWith(File.separator)) {
                temp = new File(path + tempList[i]);
            } else {
                temp = new File(path + File.separator + tempList[i]);
            }
            if (temp.isFile()) {
                temp.delete();
            }
            if (temp.isDirectory()) {
                delAllFile(path + "/" + tempList[i]);// 先删除文件夹里面的文件
                delFolder(path + "/" + tempList[i]);// 再删除空文件夹
            }
        }
    }

    /**
     * 复制单个文件
     *
     * @param oldPath
     *            String 原文件路径 如：c:/fqf.txt
     * @param newPath
     *            String 复制后路径 如：f:/fqf.txt
     * @return boolean
     */
    public void copyFile(String oldPath, String newPath) {
        try {
            int bytesum = 0;
            int byteread = 0;
            File oldfile = new File(oldPath);
            if (oldfile.exists()) { // 文件存在时
                InputStream inStream = new FileInputStream(oldPath); // 读入原文件
                FileOutputStream fs = new FileOutputStream(newPath);
                byte[] buffer = new byte[1444];
                int length;
                while ((byteread = inStream.read(buffer)) != -1) {
                    bytesum += byteread; // 字节数 文件大小
                    System.out.println(bytesum);
                    fs.write(buffer, 0, byteread);
                }
                inStream.close();
            }
        } catch (Exception e) {
            System.out.println("复制单个文件操作出错 ");
            e.printStackTrace();
        }
    }

    /**
     * 复制整个文件夹内容
     *
     * @param oldPath
     *            String 原文件路径 如：c:/fqf
     * @param newPath
     *            String 复制后路径 如：f:/fqf/ff
     * @return boolean
     */
    public void copyFolder(String oldPath, String newPath) {
        try {
            (new File(newPath)).mkdirs(); // 如果文件夹不存在 则建立新文件夹
            File a = new File(oldPath);
            String[] file = a.list();
            File temp = null;
            for (int i = 0; i < file.length; i++) {
                if (oldPath.endsWith(File.separator)) {
                    temp = new File(oldPath + file[i]);
                } else {
                    temp = new File(oldPath + File.separator + file[i]);
                }

                if (temp.isFile()) {
                    FileInputStream input = new FileInputStream(temp);
                    FileOutputStream output = new FileOutputStream(newPath + "/" + (temp.getName()).toString());
                    byte[] b = new byte[1024 * 5];
                    int len;
                    while ((len = input.read(b)) != -1) {
                        output.write(b, 0, len);
                    }
                    output.flush();
                    output.close();
                    input.close();
                }
                if (temp.isDirectory()) {// 如果是子文件夹
                    copyFolder(oldPath + "/" + file[i], newPath + "/" + file[i]);
                }
            }
        } catch (Exception e) {
            System.out.println("复制整个文件夹内容操作出错 ");
            e.printStackTrace();

        }

    }

    /**
     * 移动文件到指定目录
     *
     * @param oldPath
     *            String 如：c:/fqf.txt
     * @param newPath
     *            String 如：d:/fqf.txt
     */
    public void moveFile(String oldPath, String newPath) {
        copyFile(oldPath, newPath);
        delFile(oldPath);
    }

    /**
     * 移动文件到指定目录
     *
     * @param oldPath
     *            String 如：c:/fqf.txt
     * @param newPath
     *            String 如：d:/fqf.txt
     */
    public void moveFolder(String oldPath, String newPath) {
        copyFolder(oldPath, newPath);
        delFolder(oldPath);

    }
}