334 lines
7.6 KiB
Java
334 lines
7.6 KiB
Java
package com.jsh.erp.utils;
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import org.springframework.util.StringUtils;
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import java.io.*;
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import java.util.*;
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/**
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*
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* 文件处理工具类
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*
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*/
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public class FileUtils {
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/**
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* 功 能: 创建文件夹
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*
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* @param path
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* 参 数:要创建的文件夹名称
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* @return 返回值: 如果成功true;否则false 如：FileUtils.mkdir("/usr/apps/upload/");
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*/
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public static boolean makedir(String path) {
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File file = new File(path);
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if (!file.exists())
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return file.mkdirs();
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else
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return true;
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}
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/**
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* 保存文件
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*
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* @param stream
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* @param path
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* 存放路径
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* @param filename
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* 文件名
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* @throws IOException
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*/
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public static void SaveFileFromInputStream(InputStream stream, String path, String filename)
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throws IOException {
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File file = new File(path);
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boolean flag=true;
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if(!file.exists()){
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flag=file.mkdirs();
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}
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if(flag){
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FileOutputStream fs = new FileOutputStream(new File(path+filename));
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byte[] buffer = new byte[1024 * 1024];
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int byteread = 0;
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while ((byteread = stream.read(buffer)) != -1) {
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fs.write(buffer, 0, byteread);
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fs.flush();
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}
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fs.close();
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stream.close();
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}
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}
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/**
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* 列出某个目录下的所有文件,子目录不列出
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* @param folderPath:文件夹路径
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* @return
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*/
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public static List<String> listFile(String folderPath){
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List<String> fileList = new ArrayList<String>(); //FileViewer.getListFiles(destPath, null, false);
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File f = new File(folderPath);
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File[] t = f.listFiles();
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for(int i = 0; i < t.length; i++){
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fileList.add(t[i].getAbsolutePath());
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}
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return fileList;
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}
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/**
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* 判断文件是否存在
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*
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* @param fileName
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* @return
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*/
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public static boolean exists(String fileName) {
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File file = new File(fileName);
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if (file.exists()) {
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return true;
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} else {
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return false;
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}
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}
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/**
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* 取当前路径
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*
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* @return
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*/
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public static String getCurrentPath() {
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File directory = new File(".");
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String nowPath = "";
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try {
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nowPath = directory.getCanonicalFile().toString();
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} catch (IOException e) {
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e.printStackTrace();
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}
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return nowPath;
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}
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/**
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* 获取文件扩展名
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*
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* @param fileName
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* @return
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* */
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public static String getFileExtendName(String fileName) {
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if (fileName == null) {
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return "";
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} else {
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return fileName.substring(fileName.lastIndexOf(".") + 1, fileName
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.length());
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}
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}
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/**
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* 创建一个新文件，如果存在则报错
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*
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* @param filePath
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* @param fileName
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* @return
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*/
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public static void createFile(String filePath, String fileName)
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throws RuntimeException {
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String file = null;
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if (filePath == null) {
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file = fileName;
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} else {
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file = filePath + File.separator + fileName;
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}
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createFile(file);
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}
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/**
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* 创建一个新文件(含路径)，如果存在则报错
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*
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* @param fileName
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* 含有路径的文件名
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* @return
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*/
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public static void createFile(String fileName) throws RuntimeException {
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File f = new File(fileName);
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if (f.exists()) {
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throw new RuntimeException("FILE_EXIST_ERROR");
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} else {
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try {
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File fileFolder = f.getParentFile();
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if (!fileFolder.exists())
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fileFolder.mkdirs();
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f.createNewFile();
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} catch (IOException ie) {
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System.out.println("文件" + fileName + "创建失败：" + ie.getMessage());
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throw new RuntimeException("FILE_CREATE_ERROR");
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}
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}
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}
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/**
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* 创建目录，如果存在则不创建
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*
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* @param path
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* @return 返回结果null则创建成功，否则返回的是错误信息
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* @return
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*/
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public static String createDir(String path, boolean isCreateSubPah) {
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String msg = null;
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File dir = new File(path);
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if (dir == null) {
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msg = "不能创建空目录";
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return msg;
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}
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if (dir.isFile()) {
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msg = "已有同名文件存在";
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return msg;
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}
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if (!dir.exists()) {
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if (isCreateSubPah && !dir.mkdirs()) {
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msg = "目录创建失败，原因不明";
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} else if (!dir.mkdir()) {
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msg = "目录创建失败，原因不明";
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}
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}
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return msg;
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}
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/**
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* 删除指定目录或文件。 如果要删除是目录，同时删除子目录下所有的文件
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*
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* @file:File 目录
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* */
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public static void delFileOrFolder(String fileName) {
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if (!exists(fileName))
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return;
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File file = new File(fileName);
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delFileOrFolder(file);
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}
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/**
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* 删除指定目录或文件。 如果要删除是目录，同时删除子目录下所有的文件
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*
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* @file:File 目录
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* */
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public static void delFileOrFolder(File file) {
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if (!file.exists())
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return;
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if (file.isFile()) {
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file.delete();
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} else {
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File[] sub = file.listFiles();
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if (sub == null || sub.length <= 0) {
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file.delete();
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} else {
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for (int i = 0; i < sub.length; i++) {
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delFileOrFolder(sub[i]);
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}
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file.delete();
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}
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}
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}
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/**
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* 从Properties格式配置文件中获取所有参数并保存到HashMap中。
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* 配置中的key值即map表中的key值，如果配置文件保存时用的中文，则返回结果也会转成中文。
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*
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* @param file
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* @return
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* @throws IOException
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*/
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@SuppressWarnings("unchecked")
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public static HashMap readPropertyFile(String file, String charsetName) throws IOException {
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if (charsetName==null || charsetName.trim().length()==0){
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charsetName="gbk";
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}
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HashMap map = new HashMap();
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InputStream is =null;
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if(file.startsWith("file:"))
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is=new FileInputStream(new File(file.substring(5)));
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else
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is=FileUtils.class.getClassLoader().getResourceAsStream(file);
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Properties properties = new Properties();
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properties.load(is);
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Enumeration en = properties.propertyNames();
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while (en.hasMoreElements()) {
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String key = (String) en.nextElement();
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String code = new String(properties.getProperty(key).getBytes(
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"ISO-8859-1"), charsetName);
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map.put(key, code);
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}
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return map;
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}
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/**
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*
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* @param path
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* 文件路径
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* @param suffix
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* 后缀名
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* @param isdepth
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* 是否遍历子目录
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* @return
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*/
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@SuppressWarnings("unchecked")
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public static List getListFiles(String path, String suffix, boolean isdepth) {
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File file = new File(path);
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return FileUtils.listFile(file, suffix, isdepth);
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}
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/**
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* @param f
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* @param suffix：后缀名
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* @param isdepth：是否遍历子目录
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* @return
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*/
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@SuppressWarnings("unchecked")
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public static List listFile(File f, String suffix, boolean isdepth) {
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// 是目录，同时需要遍历子目录
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List<String> fileList = new ArrayList<String>();
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if (f.isDirectory() && isdepth == true) {
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File[] t = f.listFiles();
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for (int i = 0; i < t.length; i++) {
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listFile(t[i], suffix, isdepth);
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}
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} else {
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String filePath = f.getAbsolutePath();
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if (suffix != null) {
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int begIndex = filePath.lastIndexOf(".");// 最后一个.(即后缀名前面的.)的索引
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String tempsuffix = "";
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if (begIndex != -1)// 防止是文件但却没有后缀名结束的文件
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{
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tempsuffix = filePath.substring(begIndex + 1, filePath
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.length());
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}
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if (tempsuffix.equals(suffix)) {
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fileList.add(filePath);
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}
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} else {
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// 后缀名为null则为所有文件
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fileList.add(filePath);
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}
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}
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return fileList;
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}
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/**
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* 方法追加文件：使用FileWriter
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*
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* @param fileName
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* @param content
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*/
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public static void appendMethod(String fileName, String content) {
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try {
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// 打开一个写文件器，构造函数中的第二个参数true表示以追加形式写文件
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FileWriter writer = new FileWriter(fileName, true);
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writer.write(content + "\r\n");
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writer.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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