package com.lunhan.xxx.common.util;
|
|
import org.springframework.web.multipart.MultipartFile;
|
|
import java.io.*;
|
import java.nio.charset.Charset;
|
import java.text.DateFormat;
|
import java.text.SimpleDateFormat;
|
import java.util.Date;
|
import java.util.Random;
|
|
/**
|
* 文件工具类
|
* @author linliu
|
* @date 2019-03-20
|
*/
|
public final class FileUtil {
|
private FileUtil() {
|
throw new IllegalStateException("Utility class");
|
}
|
|
static final String TITLE = "FileUtil";
|
static final Integer EXCEL_SHEET_MAXROW = 65536;
|
static final String STR_FAILD = "generate excel is faild！";
|
static final String STR_UPLOADEXCEL = "list to excel and upload file service";
|
static final String STR_DEFAULT_SHEETNAME = "Sheet1";
|
|
/**
|
* 根据文件contentType生成一个文件名
|
* @param fileContentType contentType
|
*/
|
public static String getNewFileNameByType(String fileContentType) {
|
String timeStamp = Long.toString(System.currentTimeMillis());
|
return timeStamp + FileUtil.getFileExtByType(fileContentType);
|
}
|
|
/**
|
* 根据文件contentType生成一个文件名
|
* @param fileContentType contentType
|
*/
|
public static String getFileExtByType(String fileContentType) {
|
String result = checkImage(fileContentType);
|
if (StringUtil.isNotNullOrEmpty(result)) {
|
return result;
|
}
|
|
result = checkRar(fileContentType);
|
if (StringUtil.isNotNullOrEmpty(result)) {
|
return result;
|
}
|
|
result = checkMedia(fileContentType);
|
if (StringUtil.isNotNullOrEmpty(result)) {
|
return result;
|
}
|
|
result = checkXml(fileContentType);
|
if (StringUtil.isNotNullOrEmpty(result)) {
|
return result;
|
}
|
|
result = checkOffice(fileContentType);
|
if (StringUtil.isNotNullOrEmpty(result)) {
|
return result;
|
}
|
return ".txt";
|
}
|
|
/**
|
* 验证文件contentType是否是图片
|
* @param fileContentType contentType
|
*/
|
private static String checkImage(String fileContentType) {
|
String result;
|
switch (fileContentType) {
|
case "image/jpeg":
|
case "application/x-jpg":
|
result = ".jpg";
|
break;
|
case "image/gif":
|
result = ".gif";
|
break;
|
case "image/png":
|
result = ".png";
|
break;
|
case "image/bmp":
|
result = ".bmp";
|
break;
|
default:
|
result = "";
|
break;
|
}
|
return result;
|
}
|
|
/**
|
* 验证文件contentType是否是压缩包
|
* @param fileContentType contentType
|
*/
|
private static String checkRar(String fileContentType) {
|
String result;
|
switch (fileContentType) {
|
case "application/zip":
|
result = ".zip";
|
break;
|
case "application/x-rar":
|
result = ".rar";
|
break;
|
case "application/x-7z-compressed":
|
result = ".7z";
|
break;
|
case "application/x-gzip":
|
result = ".gz";
|
break;
|
default:
|
result = "";
|
break;
|
}
|
return result;
|
}
|
|
/**
|
* 验证文件contentType是否是媒体文件
|
* @param fileContentType contentType
|
*/
|
private static String checkMedia(String fileContentType) {
|
String result;
|
switch (fileContentType) {
|
case "video/mpeg":
|
result = ".mp2";
|
break;
|
case "video/mp4":
|
result = ".mp4";
|
break;
|
case "video/3gpp":
|
result = ".3gp";
|
break;
|
case "video/x-flv":
|
result = ".flv";
|
break;
|
|
case "audio/mpeg":
|
result = ".mp3";
|
break;
|
case "audio/x-flac":
|
result = ".flac";
|
break;
|
default:
|
result = "";
|
break;
|
}
|
return result;
|
}
|
|
/**
|
* 验证文件contentType是否是xml
|
* @param fileContentType contentType
|
*/
|
private static String checkXml(String fileContentType) {
|
String result;
|
switch (fileContentType) {
|
case "application/xml":
|
case "text/html":
|
result = ".xml";
|
break;
|
default:
|
result = "";
|
break;
|
}
|
return result;
|
}
|
|
/**
|
* 验证文件contentType是否是office
|
* @param fileContentType contentType
|
*/
|
private static String checkOffice(String fileContentType) {
|
String result;
|
switch (fileContentType) {
|
case "application/vnd.ms-excel":
|
result = ".xls";
|
break;
|
case "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet":
|
result = ".xlsx";
|
break;
|
case "application/msword":
|
result = ".doc";
|
break;
|
case "application/vnd.openxmlformats-officedocument.wordprocessingml.document":
|
result = ".docx";
|
break;
|
case "application/vnd.ms-powerpoint":
|
result = ".ppt";
|
break;
|
case "application/vnd.openxmlformats-officedocument.presentationml.presentation":
|
result = ".pptx";
|
break;
|
default:
|
result = "";
|
break;
|
}
|
return result;
|
}
|
|
/**
|
* 根据文件名识别文件 mediaType
|
* @author linliu
|
* @date 2019-06-26
|
* @param fileName 文件名
|
*/
|
public static String getMediaTypeByFileName(String fileName) {
|
if (StringUtil.isNullOrEmpty(fileName)) {
|
return "";
|
}
|
String[] arrayPath = StringUtil.split(fileName, "/");
|
String realFileName = arrayPath[arrayPath.length - 1];
|
String[] array = StringUtil.split(realFileName, "\\.");
|
String fileSuffix = "." + array[array.length - 1];
|
return getOfficeMediaTypeByFileName(fileSuffix);
|
}
|
|
/**
|
* 根据文件拓展名识别 office文件
|
* @param fileSuffix 拓展名
|
*/
|
private static String getOfficeMediaTypeByFileName(String fileSuffix) {
|
String result;
|
switch (fileSuffix) {
|
case ".xls":
|
result = "application/vnd.ms-excel";
|
break;
|
case ".xlsx":
|
result = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
|
break;
|
case ".doc":
|
result = "application/msword";
|
break;
|
case ".docx":
|
result = "application/vnd.openxmlformats-officedocument.wordprocessingml.document";
|
break;
|
case ".ppt":
|
result = "application/vnd.ms-powerpoint";
|
break;
|
case ".pptx":
|
result = "application/vnd.openxmlformats-officedocument.presentationml.presentation";
|
break;
|
default:
|
result = getImageMediaTypeByFileName(fileSuffix);
|
break;
|
}
|
return result;
|
}
|
|
/**
|
* 根据文件拓展名识别 图片文件
|
* @param fileSuffix 拓展名
|
*/
|
private static String getImageMediaTypeByFileName(String fileSuffix) {
|
String result;
|
switch (fileSuffix) {
|
case ".jpeg":
|
result = "image/jpeg";
|
break;
|
case ".jpg":
|
result = "application/x-jpg";
|
break;
|
case ".gif":
|
result = "image/gif";
|
break;
|
case ".png":
|
result = "image/png";
|
break;
|
case ".bmp":
|
result = "image/bmp";
|
break;
|
default:
|
result = getRarMediaTypeByFileName(fileSuffix);
|
break;
|
}
|
return result;
|
}
|
|
/**
|
* 根据文件拓展名识别 压缩文件
|
* @param fileSuffix 拓展名
|
*/
|
private static String getRarMediaTypeByFileName(String fileSuffix) {
|
String result;
|
switch (fileSuffix) {
|
case ".zip":
|
result = "application/zip";
|
break;
|
case ".rar":
|
result = "application/x-rar";
|
break;
|
case ".7z":
|
result = "application/x-7z-compressed";
|
break;
|
case ".gz":
|
result = "application/x-gzip";
|
break;
|
default:
|
result = getOtherMediaTypeByFileName(fileSuffix);
|
break;
|
}
|
return result;
|
}
|
|
/**
|
* 根据文件拓展名识别 其他文件
|
* @param fileSuffix 拓展名
|
*/
|
private static String getOtherMediaTypeByFileName(String fileSuffix) {
|
String result;
|
switch (fileSuffix) {
|
case ".pdf":
|
result = "application/pdf";
|
break;
|
case ".txt":
|
result = "text/plain";
|
break;
|
default:
|
result = "";
|
break;
|
}
|
return result;
|
}
|
|
/**
|
* 读取本地文件内容
|
* @param filePath 文件路径
|
*/
|
public static String readFileContent(String filePath) {
|
return readFileContent(filePath, null);
|
}
|
|
/**
|
* 读取本地文件内容
|
* @param filePath 文件路径
|
* @param charset 编码格式
|
*/
|
public static String readFileContent(String filePath, Charset charset) {
|
if(null==charset) {
|
charset = Charset.forName("utf-8");
|
}
|
File file = new File(filePath.replaceAll("\\\\", "/"));
|
StringBuilder localStrBulider = new StringBuilder();
|
if(file.isFile() && file.exists()) {
|
String lineStr;
|
try (InputStreamReader inputStreamReader=new InputStreamReader(new FileInputStream(file), charset)){
|
BufferedReader bufferReader = new BufferedReader(inputStreamReader);
|
while((lineStr = bufferReader.readLine()) != null) {
|
localStrBulider.append(lineStr);
|
}
|
bufferReader.close();
|
} catch (IOException e) {
|
//TODO log
|
}
|
} else {
|
//TODO log
|
return null;
|
}
|
return localStrBulider.toString();
|
}
|
|
/**
|
* 读取本地文件内容
|
* @param filePath 文件路径
|
*/
|
public static byte[] readFile(String filePath) throws IOException {
|
File f = new File(filePath);
|
if (!f.exists()) {
|
throw new FileNotFoundException(filePath);
|
}
|
|
ByteArrayOutputStream bos = new ByteArrayOutputStream((int) f.length());
|
BufferedInputStream in = null;
|
try {
|
in = new BufferedInputStream(new FileInputStream(f));
|
int bufSize = 1024;
|
byte[] buffer = new byte[bufSize];
|
int len;
|
while (-1 != (len = in.read(buffer, 0, bufSize))) {
|
bos.write(buffer, 0, len);
|
}
|
return bos.toByteArray();
|
} catch (IOException e) {
|
e.printStackTrace();
|
throw e;
|
} finally {
|
try {
|
in.close();
|
} catch (IOException e) {
|
e.printStackTrace();
|
}
|
bos.close();
|
}
|
}
|
|
/**
|
* 文件上传
|
* @return
|
*/
|
public static String uploadUtil(MultipartFile myFile, String fileUrlName) {
|
String urlName="";
|
try {
|
DateFormat df = new SimpleDateFormat("yyyyMMddHHmmssSSS");
|
//文件名称
|
String name = df.format(new Date());
|
|
Random r = new Random();
|
for (int i = 0; i < 3; i++) {
|
name += r.nextInt(10);
|
}
|
int idx = myFile.getOriginalFilename().lastIndexOf(".");
|
String ext = myFile.getOriginalFilename().substring(idx);
|
//保存文件 File位置 （全路径） /upload/fileName
|
|
String url = "/" + fileUrlName+"/" ;
|
//相对路径
|
String path = name + "." + ext;
|
File file = new File(url);
|
if (!file.exists()) {
|
file.mkdirs();
|
}
|
myFile.transferTo(new File(url + path));
|
urlName=path;
|
} catch (Exception e) {
|
e.printStackTrace();
|
}
|
return urlName;
|
}
|
|
/**
|
* 删除文件
|
* @param path
|
*/
|
public static void deleteFile(String path){
|
File file=new File(path);
|
if(file.exists()){
|
file.delete();
|
}
|
}
|
}
|
