JAVA 源代码 【指定文件夹 搜索指定格式的后缀名 拷贝到 指定目录】

import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.InputStream;public class CopyFile {/**      * 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();        }    } }

import java.io.File; import java.util.ArrayList; import java.util.Iterator; import java.util.List; public class FileViewer {    /**     * 读取文件夹下所以文件     *     * @param dirPath     * @param fileTypes     * @return     */    public static List<String> getAllFilePathByDir_FilterByFileType(String dirPath,            List<String> fileTypes,String destination) {        String localClassFilePath = FileViewer.class.getResource("/").getPath();        String contextFilePath = localClassFilePath.substring(1, localClassFilePath.length() - 16);        contextFilePath = contextFilePath.replace("/", "\\");        List<String> filePathList = new ArrayList<String>();        for (int index = 0; index < fileTypes.size(); index++) {            fileList = new ArrayList<String>();            List arrayList = FileViewer.getListFiles(dirPath, fileTypes.get(index), true);            if (arrayList.isEmpty()) {                System.out.println("没有符号要求的文件");            } else {                for (Iterator i = arrayList.iterator(); i.hasNext();) {                    String temp = (String) i.next();                    temp = temp.replace(contextFilePath, "");//把根路径去掉                                         System.out.println(temp);                CopyFile cp=new CopyFile();            cp.copyFile(temp, destination+Util.GetReName(temp));                                        filePathList.add(temp);                }            }        }        for (int replaceIndex = 0; replaceIndex < filePathList.size(); replaceIndex++) {            filePathList.set(replaceIndex, filePathList.get(replaceIndex).replace("\\", "/"));        }        return filePathList;    }    public static List<String> fileList = new ArrayList<String>();    /**     * 添加文件后缀名称     *     * @return     */    public static List<String> suffixlist(String suffix) {        List<String> list = new ArrayList<String>();        String[] types=suffix.split(",");        for(int i=0;i<types.length;i++)        {        list.add(types[i]);        }        return list;    }    /**     *     * @param path 文件路径     * @param suffix 后缀名     * @param isdepth 是否遍历子目录     * @return     */    public static List getListFiles(String path, String suffix, boolean isdepth) {        File file = new File(path);        return FileViewer.listFile(file, suffix, isdepth);    }    public static List listFile(File f, String suffix, boolean isdepth) {        // 是目录，同时需要遍历子目录         if (f.isDirectory() && isdepth == true) {            File[] t = f.listFiles();            for (int i = 0; i < t.length; i++) {                listFile(t[i], suffix, isdepth);            }        } else {            String filePath = f.getAbsolutePath();            if (suffix != null) {                int begIndex = filePath.lastIndexOf(".");// 最后一个.(即后缀名前面的.)的索引                 String tempsuffix = "";                if (begIndex != -1)// 防止是文件但却没有后缀名结束的文件                 {                    tempsuffix = filePath.substring(begIndex + 1, filePath                            .length());                }                if (tempsuffix.equals(suffix)) {                    fileList.add(filePath);                }            } else {                // 后缀名为null则为所有文件                 fileList.add(filePath);            }        }        return fileList;    }}

import java.util.List;public class Test {public static void main(String[] args) { List<String> listResult = FileViewer.getAllFilePathByDir_FilterByFileType("D:\\lib", FileViewer.suffixlist("jar"),"D:\\cordys\\");          }}