265 lines
7.2 KiB
Java
265 lines
7.2 KiB
Java
package com.rymcu.vertical.util;
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import org.apache.commons.lang3.StringUtils;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.web.multipart.MultipartFile;
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import java.io.*;
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import java.net.URLEncoder;
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/**
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* 文件操作工具类
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* @author 张代浩
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*
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*/
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public class FileUtils {
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private static final Logger logger = LoggerFactory.getLogger(FileUtils.class);
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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 getExtend(String filename) {
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return getExtend(filename, "");
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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 getExtend(String filename, String defExt) {
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if ((filename != null) && (filename.length() > 0)) {
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int i = filename.lastIndexOf('.');
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if ((i > 0) && (i < (filename.length() - 1))) {
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return (filename.substring(i+1)).toLowerCase();
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}
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}
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return defExt.toLowerCase();
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}
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/**
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* 获取文件名称[不含后缀名]
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*
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* @param
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* @return String
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*/
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public static String getFilePrefix(String fileName) {
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int splitIndex = fileName.lastIndexOf(".");
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return fileName.substring(0, splitIndex).replaceAll("\\s*", "");
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}
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/**
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* 获取文件名称[不含后缀名]
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* 不去掉文件目录的空格
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* @param
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* @return String
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*/
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public static String getFilePrefix2(String fileName) {
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int splitIndex = fileName.lastIndexOf(".");
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return fileName.substring(0, splitIndex);
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}
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/**
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* 文件复制
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*方法摘要：这里一句话描述方法的用途
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*@param
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*@return void
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*/
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public static void copyFile(String inputFile,String outputFile) throws FileNotFoundException{
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File sFile = new File(inputFile);
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File tFile = new File(outputFile);
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FileInputStream fis = new FileInputStream(sFile);
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FileOutputStream fos = new FileOutputStream(tFile);
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int temp = 0;
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byte[] buf = new byte[10240];
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try {
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while((temp = fis.read(buf))!=-1){
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fos.write(buf, 0, temp);
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}
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} catch (IOException e) {
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e.printStackTrace();
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} finally{
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try {
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fis.close();
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fos.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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/**
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* 判断文件是否为图片<br>
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* <br>
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*
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* @param filename
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* 文件名<br>
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* 判断具体文件类型<br>
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* @return 检查后的结果<br>
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* @throws Exception
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*/
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public static boolean isPicture(String filename) {
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// 文件名称为空的场合
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if (StringUtils.isBlank(filename)) {
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// 返回不和合法
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return false;
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}
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// 获得文件后缀名
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//String tmpName = getExtend(filename);
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String tmpName = filename;
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// 声明图片后缀名数组
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String imgeArray[][] = { { "bmp", "0" }, { "dib", "1" },
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{ "gif", "2" }, { "jfif", "3" }, { "jpe", "4" },
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{ "jpeg", "5" }, { "jpg", "6" }, { "png", "7" },
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{ "tif", "8" }, { "tiff", "9" }, { "ico", "10" } };
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// 遍历名称数组
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for (int i = 0; i < imgeArray.length; i++) {
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// 判断单个类型文件的场合
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if (imgeArray[i][0].equals(tmpName.toLowerCase())) {
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return true;
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}
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}
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return false;
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}
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/**
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* 判断文件是否为DWG<br>
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* <br>
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*
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* @param filename
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* 文件名<br>
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* 判断具体文件类型<br>
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* @return 检查后的结果<br>
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* @throws Exception
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*/
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public static boolean isDwg(String filename) {
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// 文件名称为空的场合
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if (oConvertUtils.isEmpty(filename)) {
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// 返回不和合法
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return false;
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}
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// 获得文件后缀名
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String tmpName = getExtend(filename);
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// 声明图片后缀名数组
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if (tmpName.equals("dwg")) {
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return true;
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}
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return false;
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}
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/**
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* 删除指定的文件
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*
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* @param strFileName
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* 指定绝对路径的文件名
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* @return 如果删除成功true否则false
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*/
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public static boolean delete(String strFileName) {
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File fileDelete = new File(strFileName);
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if (!fileDelete.exists() || !fileDelete.isFile()) {
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logger.info("错误: " + strFileName + "不存在!");
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return false;
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}
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//LogUtil.info("--------成功删除文件---------"+strFileName);
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return fileDelete.delete();
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}
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/**
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*
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* @Title: encodingFileName 2015-11-26 huangzq add
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* @Description: 防止文件名中文乱码含有空格时%20
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* @param @param fileName
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* @param @return 设定文件
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* @return String 返回类型
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* @throws
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*/
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public static String encodingFileName(String fileName) {
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String returnFileName = "";
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try {
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returnFileName = URLEncoder.encode(fileName, "UTF-8");
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returnFileName = StringUtils.replace(returnFileName, "+", "%20");
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if (returnFileName.length() > 150) {
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returnFileName = new String(fileName.getBytes("GB2312"), "ISO8859-1");
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returnFileName = StringUtils.replace(returnFileName, " ", "%20");
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}
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} catch (UnsupportedEncodingException e) {
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e.printStackTrace();
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//LogUtil.info("Don't support this encoding ...");
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}
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return returnFileName;
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}
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/**
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* 根据现有路径获取SWF文件名称
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* @author taoYan
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* @since 2018年7月26日
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*/
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public static String getSwfPath(String path){
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String leftSlash = "/";
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if(!File.separator.equals(leftSlash)){
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path = path.replace(File.separator,leftSlash);
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}
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String fileDir = path.substring(0,path.lastIndexOf(leftSlash)+1);//文件目录带/
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int pointPosition = path.lastIndexOf(".");
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String fileName = path.substring(path.lastIndexOf(leftSlash)+1,pointPosition);//文件名不带后缀
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String swfName = "";//PinyinUtil.getPinYinHeadChar(fileName);// 取文件名首字母作为SWF文件名
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return fileDir+swfName+".swf";
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}
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/**
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* 上传txt文件，防止乱码
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* @author taoYan
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* @since 2018年7月26日
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*/
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public static void uploadTxtFile(MultipartFile mf, String savePath) throws IOException{
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//利用utf-8字符集的固定首行隐藏编码原理
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//Unicode:FF FE UTF-8:EF BB
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byte[] allbytes = mf.getBytes();
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try{
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String head1 = toHexString(allbytes[0]);
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//System.out.println(head1);
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String head2 = toHexString(allbytes[1]);
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//System.out.println(head2);
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if("ef".equals(head1) && "bb".equals(head2)){
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//UTF-8
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String contents = new String(mf.getBytes(),"UTF-8");
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if(StringUtils.isNotBlank(contents)){
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OutputStream out = new FileOutputStream(savePath);
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out.write(contents.getBytes());
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out.close();
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}
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} else {
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//GBK
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String contents = new String(mf.getBytes(),"GBK");
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OutputStream out = new FileOutputStream(savePath);
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out.write(contents.getBytes());
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out.close();
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}
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} catch(Exception e){
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String contents = new String(mf.getBytes(),"UTF-8");
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if(StringUtils.isNotBlank(contents)){
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OutputStream out = new FileOutputStream(savePath);
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out.write(contents.getBytes());
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out.close();
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}
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}
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}
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public static String toHexString(int index){
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String hexString = Integer.toHexString(index);
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// 1个byte变成16进制的，只需要2位就可以表示了，取后面两位，去掉前面的符号填充
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hexString = hexString.substring(hexString.length() -2);
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return hexString;
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}
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}
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