Java文件操作类

编程技术  /  houtizong 发布于 3年前   79

package util;import java.io.BufferedInputStream;import java.io.BufferedOutputStream;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.FileReader;import java.io.FileWriter;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.io.OutputStreamWriter;import java.io.PrintWriter;import java.io.Reader;import java.io.UnsupportedEncodingException;import java.io.Writer;import java.net.HttpURLConnection;import java.net.URL;import java.net.URLConnection;import java.text.SimpleDateFormat;import java.util.ArrayList;import java.util.Date;import java.util.List;import java.util.Properties;import java.util.jar.JarEntry;import java.util.jar.JarOutputStream;import java.util.regex.Matcher;import java.util.regex.Pattern;import org.apache.commons.io.IOUtils;public class FileUtil {public static String getFilePath(String source_filename,String pointFilePath) {String ext = "";String source_filename_no_ext = source_filename;if (source_filename.indexOf(".") > 0) {ext = source_filename.substring(source_filename.lastIndexOf("."));source_filename_no_ext = source_filename.substring(0,source_filename.lastIndexOf("."));}String uploadRefPath = (pointFilePath == null || pointFilePath.trim().length() == 0) ? getSystemTempPath() : pointFilePath;if (uploadRefPath != null&& !uploadRefPath.endsWith(System.getProperty("file.separator"))&& !uploadRefPath.endsWith("/")&& !uploadRefPath.endsWith("\\")) {uploadRefPath += System.getProperty("file.separator");}String uploadPath = uploadRefPath;File uploadDir = new File(uploadPath);if (!uploadDir.exists())uploadDir.mkdirs();Date today = new Date();String formatString = "yyyyMMddHHmmss";SimpleDateFormat dateformat = new SimpleDateFormat(formatString);String filename = source_filename_no_ext + dateformat.format(today);for (int i = 0; i < 10000; i++) {String real_filename = filename + "_" + i + ext;File file = new File(uploadDir, real_filename);if (!file.exists()) {return uploadRefPath + real_filename;}}return null;}/** * 获取系统的临时目录 *  * @return */public static String getSystemTempPath() {return System.getProperty("java.io.tmpdir");}// ~ Methods add by wubing// -------------------------------------------------------------/** * 获得指定配置文件属性 *  * @param fileName *            文件名称 * @return Properties 文件中所包含的所有属性 * @throws Exception *             读取属性过程中的任何异常 */public static Properties getProperties(String fileName) throws Exception {Properties initProps = new Properties();InputStream in = null;try {in = getInputStream(fileName);initProps.load(in);} finally {try {if (in != null) {in.close();}} catch (Exception e) {}}return initProps;}/** * 获取指定配置文件属性的读取流，读取路径为本类的CLASSLOADER或者父CLASSLOADER *  * @param fileName *            文件名称 *  * @return InputStream 该文件所对应的输入流 * @throws Exception *             读取输入流过程中的任何异常 */public static InputStream getInputStream(String fileName) throws Exception {return getInputStream(getFile(getFileURL(fileName).getFile()));}public static InputStream getInputStream(File file) throws Exception {return new BufferedInputStream(new FileInputStream(file));}/** * 根据文件名获取其在应用中的相对路径 *  * @param fileName *            文件名 * @return URL 文件在应用中的相对路径 * @throws Exception *             获取路径过程中的任何异常 */public static URL getFileURL(String fileName) throws Exception {// 从本类CLASSLOADER相应路径中读取文件URL fileURL = FileUtil.class.getClassLoader().getResource(fileName);if (fileURL == null) {FileUtil.class.getClassLoader().getResource("/" + fileName);}if (fileURL == null) {Thread.currentThread().getContextClassLoader().getResource(fileName);}if (fileURL == null) {fileURL = ClassLoader.getSystemResource(fileName);}if (fileURL == null) {fileURL = new File(fileName).toURL();}return fileURL;}/** * 保存属性到文件 *  * @param fileName *            文件名 * @param prop *            需存储的属性 * @throws Exception *             存储属性过程中的任何异常 */public static void setProperties(String fileName, Properties prop)throws Exception {FileOutputStream fs = null;try {fs = new FileOutputStream(getFileURL(fileName).getFile());prop.store(fs, "store at " + new Date());} finally {// 关闭流IOUtils.closeQuietly(fs);}}/** * 判断是否需要重新LOAD地址配置文件 *  * @param fileName *            文件名 * @param lastModify *            原最后修改时间 * @return boolean 是否需要重新读取 * @throws Exception *             判断重新LOAD过程中的任何异常 */public static boolean needReload(String fileName, long lastModify)throws Exception {// 判断文件最后更新时间，决定是否RELOADif (getLastModify(fileName) > lastModify) {return true;}return false;}/** * 根据文件名获取文件对象，在当前CLASSLOADER路径下寻找文件 *  * @param fileName *            文件名 * @return File 文件对象 * @throws Exception *             获取文件过程中的任何异常 */public static File getFile(String fileName) throws Exception {return new File(getFileURL(fileName).getFile());}/** * 获取文件最后修改时间 *  * @param fileName *            文件名 * @return long 文件最后修改时间 * @throws Exception *             获取最后修改时间过程中的任何异常 */public static long getLastModify(String fileName) throws Exception {// 获取当前文件最新修改时间return getFile(fileName).lastModified();}/** * 创建一个目录 *  * @param dir *            目录路径 * @param ignoreIfExitst *            如果已经存在该目录是否忽略 * @return boolean 是否创建成功 * @throws Exception *             创建目录过程中的任何异常 */public static boolean createDir(String dir, boolean ignoreIfExitst)throws Exception {File file = getFile(dir);if (ignoreIfExitst && file.exists()) {return false;}return file.mkdir();}/** * 创建一个目录，如果它的父目录不存在，则自动创建 *  * @param dir *            目录路径 * @param ignoreIfExitst *            如果已经存在该目录是否忽略 * @return boolean 是否创建成功 * @throws Exception *             创建目录过程中的任何异常 */public static boolean createDirs(String dir, boolean ignoreIfExitst)throws Exception {File file = getFile(dir);if (ignoreIfExitst && file.exists()) {return false;}return file.mkdirs();}/** * 删除文件 *  * @param filename *            被删除文件的文件名 * @return boolean 是否删除成功 * @throws Exception *             删除文件过程中的任何异常 */public static boolean deleteFile(String filename) throws Exception {File file = getFile(filename);return deleteFile(file);}/** * 删除文件 *  * @param file *            被删除文件 * @return boolean 是否删除成功 * @throws Exception *             删除文件过程中的任何异常 */public static boolean deleteFile(File file) throws Exception {if (file.isDirectory()) {return deleteDir(file);}if (!file.exists()) {return false;}return file.delete();}/** * 删除目录，包括其下的所有子目录和文件 *  * @param dir *            被删除的目录名 * @return boolean 是否删除成功 * @throws Exception *             删除目录过程中的任何异常 */public static boolean deleteDir(File dir) throws Exception {if (dir.isFile()) {deleteFile(dir);}File[] files = dir.listFiles();if (files != null) {for (int i = 0; i < files.length; i++) {File file = files[i];if (file.isFile()) {file.delete();} else {deleteDir(file);}}}return dir.delete();}/** * 使用流里的内容创建一个新文件 *  * @param stream *            原文件流 * @param fileName *            指定的文件路径及文件名 * @return File 生成的新文件 * @throws Exception *             生成文件过程中的任何异常 */public static File createFile(InputStream stream, String fileName)throws Exception {File newFile = new File(fileName);OutputStream fileOut = new BufferedOutputStream(new FileOutputStream(newFile));byte[] buffer = new byte[8192];int bytesRead = 0;while ((bytesRead = stream.read(buffer, 0, 8192)) != -1) {fileOut.write(buffer, 0, bytesRead);}fileOut.close();stream.close();return newFile;}public static void createFile(String output, String content)throws Exception {try {OutputStreamWriter fw = new OutputStreamWriter(new FileOutputStream(output));PrintWriter out = new PrintWriter(fw);out.print(content);out.close();fw.close();} catch (Exception ex) {throw new Exception(ex);}}// 获取可写流public static Writer openWithWrite(String file, boolean append)throws Exception {return new BufferedWriter(new FileWriter(FileUtil.getFile(file), append));}// 获取可读流public static Reader openWithRead(String file) throws Exception {return new BufferedReader(new FileReader(FileUtil.getFile(file)));}// 获得文件字节流public static byte[] getFileBytes(InputStream inputStream) throws Exception {ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(1024);byte[] block = new byte[512];while (true) {int readLength = inputStream.read(block);if (readLength == -1) {break; // end of file}byteArrayOutputStream.write(block, 0, readLength);}byte[] retValue = byteArrayOutputStream.toByteArray();byteArrayOutputStream.close();return retValue;}// 获得文件字节流public static byte[] getFileBytes(String file) throws Exception {return getFileBytes(getInputStream(file));}public static void move(String input, String output) throws Exception {File inputFile = new File(input);File outputFile = new File(output);try {inputFile.renameTo(outputFile);} catch (Exception ex) {throw new Exception("Can not mv" + input + " to " + output+ ex.getMessage());}}public static boolean copy(String input, String output) throws Exception {int BUFSIZE = 0x10000;FileInputStream fis = new FileInputStream(input);FileOutputStream fos = new FileOutputStream(output);try {byte buf[] = new byte[BUFSIZE];int i;while ((i = fis.read(buf)) > -1) {fos.write(buf, 0, i);}} catch (Exception ex) {throw new Exception("makeHome" + ex.getMessage());} finally {fis.close();fos.close();}return true;}public static void makeHome(String home) throws Exception {File homedir = new File(home);if (!homedir.exists()) {try {homedir.mkdirs();} catch (Exception ex) {throw new Exception("Can not mkdir :" + home+ " Maybe include special charactor!");}}}public static void copyDir(String sourcedir, String destdir)throws Exception {File dest = new File(destdir);File source = new File(sourcedir);String files[] = source.list();try {makeHome(destdir);} catch (Exception ex) {throw new Exception("CopyDir:" + ex.getMessage());}for (int i = 0; i < files.length; i++) {String sourcefile = source + File.separator + files[i];String destfile = dest + File.separator + files[i];File temp = new File(sourcefile);if (temp.isFile()) {try {copy(sourcefile, destfile);} catch (Exception ex) {throw new Exception("CopyDir:" + ex.getMessage());}}}}public static void recursiveRemoveDir(File directory) throws Exception {if (!directory.exists()) {throw new IOException(directory.toString() + " do not exist!");}String filelist[] = directory.list();File tmpFile = null;for (int i = 0; i < filelist.length; i++) {tmpFile = new File(directory.getAbsolutePath(), filelist[i]);if (tmpFile.isDirectory()) {recursiveRemoveDir(tmpFile);} else if (tmpFile.isFile()) {try {tmpFile.delete();} catch (Exception ex) {throw new Exception(tmpFile.toString()+ " can not be deleted " + ex.getMessage());}}}try {directory.delete();} catch (Exception ex) {throw new Exception(directory.toString() + " can not be deleted "+ ex.getMessage());} finally {filelist = null;}}// 从远程读文件，且保存在本地public static boolean remoteFileRead(String sUrl, String path) {try {URL url = new URL(sUrl);URLConnection conn = url.openConnection();conn.connect();HttpURLConnection httpConn = (HttpURLConnection) conn;if (httpConn.getResponseCode() == 200) {System.out.println("Connect to " + sUrl+ " failed,return code:" + httpConn.getResponseCode());return false;}File file = createFile(conn.getInputStream(), path);return true;} catch (Exception ex) {ex.printStackTrace();return false;}}public static String getFileString(String fileName) throws Exception {StringBuffer sb = new StringBuffer();BufferedReader br = null;String line = null;try {br = new BufferedReader(new InputStreamReader(new FileInputStream(fileName)));while ((line = br.readLine()) != null) {sb.append(line + "\n");}} finally {// 关闭流IOUtils.closeQuietly(br);}return sb.toString();}public static String getFileString(String fileName, String charSet)throws Exception {StringBuffer sb = new StringBuffer();BufferedReader br = null;String line = null;try {br = new BufferedReader(new InputStreamReader(new FileInputStream(fileName), charSet));while ((line = br.readLine()) != null) {sb.append(line);}} finally {// 关闭流IOUtils.closeQuietly(br);}return sb.toString();}// 将文本转成流public static InputStream stringToInputStream(String str)throws UnsupportedEncodingException {ByteArrayInputStream stream = new ByteArrayInputStream(str.getBytes("UTF-8"));return stream;}/** * 搜索文件 *  * @param dir *            起始文件夹 * @param s * @return */public static File[] searchFiles(String dir, String s) {// 起始文件夹File file = new File(dir);s = s.replace('.', '#');s = s.replaceAll("#", "\\\\.");s = s.replace('*', '#');s = s.replaceAll("#", ".*");s = s.replace('?', '#');s = s.replaceAll("#", ".?");s = "^" + s + "$";Pattern p = Pattern.compile(s);List<File> list = filePattern(file, p);if (list == null) {return null;}File[] rtn = new File[list.size()];list.toArray(rtn);return rtn;}/** * @param file *            File 起始文件夹 * @param p *            Pattern 匹配类型 * @return ArrayList 其文件夹下的文件夹 */private static List<File> filePattern(File file, Pattern p) {if (file == null) {return null;} else if (file.isFile()) {Matcher fMatcher = p.matcher(file.getName());if (fMatcher.matches()) {List<File> list = new ArrayList<File>();list.add(file);return list;}} else if (file.isDirectory()) {File[] files = file.listFiles();if (files != null && files.length > 0) {List<File> list = new ArrayList<File>();for (int i = 0; i < files.length; i++) {List<File> rlist = filePattern(files[i], p);if (rlist != null) {list.addAll(rlist);}}return list;}}return null;}/** * 打jar、war、zip包 *  * @param jarFileName * @param inputFilePath * @param base */public static void pack(String jarFileName, String inputFilePath,String base) {JarOutputStream jarOutputStream = null;try {File inputFile = new File(inputFilePath);jarOutputStream = new JarOutputStream(new FileOutputStream(jarFileName));pack(jarOutputStream, inputFile, base);} catch (Exception e) {e.printStackTrace();} finally {try {jarOutputStream.close();} catch (IOException e) {e.printStackTrace();}}}private static void pack(JarOutputStream jarOutputStream, File inputFile,String base) throws IOException {if (inputFile.isDirectory()) {File[] files = inputFile.listFiles();jarOutputStream.putNextEntry(new JarEntry(base + "/"));base = base.length() == 0 ? "" : base + "/";for (int i = 0; i < files.length; i++) {pack(jarOutputStream, files[i], base + files[i].getName());}} else {jarOutputStream.putNextEntry(new JarEntry(base));FileInputStream in = null;try {in = new FileInputStream(inputFile);int b;while ((b = in.read()) != -1) {jarOutputStream.write(b);}} finally {in.close();}}}}