Java tutorial
/* * Copyright 2009 Society for Health Information Systems Programmes, India (HISP India) * * This file is part of Report module. * * Report module is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * Report module is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with Report module. If not, see <http://www.gnu.org/licenses/>. * */ /** * <p> File: com.mss.cms.utils.FileUtils.java </p> * <p> Project: MssContentCms </p> * <p> Copyright (c) 2007 MSS Technologies. </p> * <p> All rights reserved. </p> * <p> Author: Nguyen manh chuyen </p> * <p> Update by: Nguyen manh chuyen </p> * <p> Version: $1.0 </p> * <p> Create date: Dec 16, 2008 10:42:18 AM </p> * <p> Update date: Dec 16, 2008 10:42:18 AM </p> **/ package org.openmrs.module.report.util; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; import java.io.InputStream; import java.io.OutputStreamWriter; import java.io.Writer; import java.util.ArrayList; import java.util.List; import org.apache.commons.io.IOUtils; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.springframework.util.FileCopyUtils; /** * <p> Class: FileUtils </p> * <p> Package: com.mss.cms.utils </p> * <p> Author: Nguyen manh chuyen </p> * <p> Update by: Nguyen manh chuyen </p> * <p> Version: $1.0 </p> * <p> Create date: Dec 16, 2008 10:42:18 AM </p> * <p> Update date: Dec 16, 2008 10:42:18 AM </p> **/ public class FileUtils { private static Log log = LogFactory.getLog(FileUtils.class); /** * * <p> Method: saveFile() </p> * <p> Objective: saveFile's objective </p> * <p> Params: </p> * <p> Return: void </p> * <p> Author: Nguyen manh chuyen </p> * <p> Update by: Nguyen manh chuyen </p> * <p> Version: $1.0 </p> * <p> Create date: Dec 16, 2008 10:46:43 AM </p> * <p> Update date: Dec 16, 2008 10:46:43 AM </p> * */ public static void saveFile(final InputStream inputStream, final String fileName) { //path full to file name =fileName final File file = new File(fileName); FileOutputStream fileOut = null; try { fileOut = new FileOutputStream(file); IOUtils.copy(inputStream, fileOut); } catch (FileNotFoundException e) { log.error("saveFile() - File Not Found." + e); } catch (IOException e) { log.error("saveFile() - Error while saving file." + e); } finally { try { inputStream.close(); if (fileOut != null) { fileOut.close(); } } catch (IOException e) { log.error(e); } } } public static boolean checkExistFile(String uploadDir, String fileName) { File dirPath = new File(uploadDir); if (!dirPath.exists()) { return false; } String sep = System.getProperty("file.separator"); File uploadedFile = new File(uploadDir + sep + fileName); if (uploadedFile.exists()) return true; return false; } public static void deleteFile(String filePath) throws Exception { File dirPath = new File(filePath); if (dirPath.exists() && dirPath.isFile()) { dirPath.delete(); } } public static void deleteDir(String dirPath) throws Exception { File dirEPath = new File(dirPath); if (dirEPath.exists() && dirEPath.isDirectory()) { org.apache.commons.io.FileUtils.deleteDirectory(dirEPath); } } public static String copyFile(String uploadDir, byte[] bytes, String fileName) { File dirPath = new File(uploadDir); if (!dirPath.exists()) { dirPath.mkdirs(); } String sep = System.getProperty("file.separator"); File uploadedFile = new File(uploadDir + sep + fileName); try { // if(!uploadedFile.exists()) FileCopyUtils.copy(bytes, uploadedFile); } catch (Exception e) { // TODO: handle exception log.error("copyFile: " + e.toString()); return ""; } return fileName; // set success message // String url = request.getContextPath() + ConfigurationService.get(MyConst.VN_MUSIC_PATH_PICTURE,"/upload/vn_music/picture/")+ filename; } public static void renameFile(File file, String newName) { file.renameTo(new File(newName)); } public static void renameFile(String fileOlder, String newName) { File file = new File(fileOlder); File newFile = new File(newName); if (file != null && file.isFile()) { file.renameTo(newFile); } } public static void main(String[] args) throws Exception { //WriteStringToFile("nLxJXeq9+sADRE5aGhrrGPYHZPEvhCAHgX1DnlJbJdY+hdRcq3Rdy3WF9AsdxfiEF/sKptIxDr3TdIIH", "D:/HISP/report/birt_report_temp.rptdesign"); } public static String readInput(String path) { StringBuffer buffer = new StringBuffer(); try { //FileInputStream fis = new FileInputStream(path); //InputStreamReader isr = new InputStreamReader(fis, "UTF8"); BufferedReader input = new BufferedReader(new FileReader(path)); String str = ""; while ((str = input.readLine()) != null) { buffer.append(str).append("\n"); } input.close(); return buffer.toString(); } catch (IOException e) { e.printStackTrace(); return null; } } public static String getExtensionFile(String fileName) { if (fileName == null || "".equals(fileName)) return null; if (fileName.lastIndexOf(".") > 0) return fileName.substring(fileName.lastIndexOf(".")); return null; } static void writeOutput(String str) { try { FileOutputStream fos = new FileOutputStream("test.txt"); Writer out = new OutputStreamWriter(fos, "UTF8"); out.write(str); out.close(); } catch (IOException e) { e.printStackTrace(); } } public static void WriteStringToFile(String str, String file) { try { BufferedWriter output = new BufferedWriter(new FileWriter(file)); output.write(str); output.flush(); output.close(); } catch (IOException e) { e.printStackTrace(); } } public synchronized static File createFileTemp(byte[] bytes) { File tempFile = null; try { tempFile = File.createTempFile("cms_graphic.gr", ".tmp"); tempFile.deleteOnExit(); FileCopyUtils.copy(bytes, tempFile); } catch (Exception e) { // TODO: handle exception } return tempFile; } public synchronized static File createFileTemp(String fileName, String ext, byte[] bytes, File dir) { File tempFile = null; try { tempFile = File.createTempFile(fileName, ext, dir); tempFile.deleteOnExit(); FileCopyUtils.copy(bytes, tempFile); } catch (Exception e) { // TODO: handle exception } return tempFile; } public static boolean copyFile(File source, File dest) { try { BufferedInputStream in = new BufferedInputStream(new FileInputStream(source)); BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(dest)); byte[] data = new byte[2 * 1024]; int count; while ((count = in.read(data, 0, data.length)) != -1) { out.write(data, 0, count); } out.flush(); out.close(); in.close(); return true; } catch (FileNotFoundException e) { return false; } catch (IOException e) { return false; } } public static void copyFile(String fileSource, String folderDest) throws Exception { File file = new File(fileSource); File destDir = new File(folderDest); if (!destDir.exists()) { destDir.mkdirs(); } if (file.exists() && file.isFile()) { org.apache.commons.io.FileUtils.copyFileToDirectory(file, destDir); } } public static void copyFile(InputStream in, File dest) throws Exception { BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(dest)); byte[] data = new byte[2 * 1024]; int count; while ((count = in.read(data, 0, data.length)) != -1) { out.write(data, 0, count); } out.flush(); out.close(); in.close(); } public static boolean deleteDir(File dir) { // System.out.println(dir); if (dir != null && dir.exists() && dir.isDirectory()) { String[] children = dir.list(); for (int i = 0; i < children.length; i++) { children[i] = dir.getAbsolutePath() + "/" + children[i].toString(); boolean success = deleteDir(new File(children[i].toString())); if (!success) { return false; } } } // The directory is now empty so delete it return dir.delete(); } public static List<String> listFile(String path) { //harsh 28/6/2012 jenkin : Category CORRECTNESS - Type RV_RETURN_VALUE_IGNORED path = path.replaceAll("//", "/"); File file = new File(path); List<String> list = null; if (file != null && file.isDirectory()) { String[] temp = file.list(); if (temp != null && temp.length > 0) { list = new ArrayList<String>(); for (String t : temp) { String newPath = path + t; //harsh 28/6/2012 jenkin : Category CORRECTNESS - Type RV_RETURN_VALUE_IGNORED newPath = newPath.replaceAll("//", "/"); File fileTemp = new File(newPath); if (fileTemp != null && fileTemp.isFile()) list.add(newPath); } return list; } } return null; } public static List<String> listFileByExtension(String path, String extension) { List<String> listResult = new ArrayList<String>(); List<String> list = listFile(path); if (list != null && list.size() > 0) { System.out.println("list: : : " + list); for (int i = 0; i < list.size(); i++) { if (list.get(i).indexOf(".") > 0) { String temp = list.get(i); if (temp.substring(temp.lastIndexOf(".") + 1).equalsIgnoreCase(extension)) { listResult.add(temp); } } } } list = null; return listResult; } }