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@ -0,0 +1,800 @@
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package com.bs.web.controller.utils;
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import cn.hutool.core.codec.Base64;
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import cn.hutool.core.io.IoUtil;
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import cn.hutool.core.util.IdUtil;
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import cn.hutool.poi.excel.BigExcelWriter;
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import cn.hutool.poi.excel.ExcelUtil;
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import com.bs.common.constant.Constants;
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import com.bs.common.exception.ServiceException;
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import com.bs.ct.utils.UUIDUtils;
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import lombok.extern.slf4j.Slf4j;
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import org.apache.poi.util.IOUtils;
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import org.apache.poi.xssf.streaming.SXSSFSheet;
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import org.springframework.core.io.ClassPathResource;
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import org.springframework.web.multipart.MultipartFile;
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import javax.servlet.ServletOutputStream;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import java.awt.image.BufferedImage;
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import java.io.*;
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import java.net.URLEncoder;
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import java.security.MessageDigest;
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import java.security.SecureRandom;
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import java.text.DecimalFormat;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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import java.util.List;
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import java.util.Map;
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/**
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* File工具类，扩展 hutool 工具包
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*/
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@Slf4j
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public class FileUtil extends cn.hutool.core.io.FileUtil {
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/**
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* 定义GB的计算常量
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*/
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private static final int GB = 1024 * 1024 * 1024;
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/**
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* 定义MB的计算常量
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*/
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private static final int MB = 1024 * 1024;
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/**
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* 定义KB的计算常量
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*/
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private static final int KB = 1024;
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/**
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* 格式化小数
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*/
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private static final DecimalFormat DF = new DecimalFormat("0.00");
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/**
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* 系统临时目录
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* <br>
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* windows 包含路径分割符，但Linux 不包含,
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* 在windows \\==\ 前提下，
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* 为安全起见 同意拼装 路径分割符，
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* <pre>
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* java.io.tmpdir
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* windows : C:\Users/xxx\AppData\Local\Temp\
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* linux: /temp
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* </pre>
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*/
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public static final String SYS_TEM_DIR = System.getProperty("java.io.tmpdir") + File.separator;
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private static final int FILE_READ_BTYE = 1024;
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/**
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* MultipartFile转File
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*/
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public static File toFile(MultipartFile multipartFile) {
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// 获取文件名
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String fileName = multipartFile.getOriginalFilename();
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// 获取文件后缀
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String prefix = "." + getExtensionName(fileName);
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File file = null;
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try {
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// 用uuid作为文件名，防止生成的临时文件重复
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file = File.createTempFile(IdUtil.simpleUUID(), prefix);
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// MultipartFile to File
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multipartFile.transferTo(file);
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} catch (IOException e) {
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e.printStackTrace();
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}
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return file;
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}
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/**
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* 获取文件扩展名，不带 .
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*/
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public static String getExtensionName(String filename) {
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if ((filename != null) && (filename.length() > 0)) {
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int dot = filename.lastIndexOf('.');
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if ((dot > -1) && (dot < (filename.length() - 1))) {
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return filename.substring(dot + 1);
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}
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}
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return filename;
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}
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public static String getExtensionNameBase64(String filename) {
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if (filename.contains("data:image/png;base64")) {
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return "png";
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}else if(filename.contains("data:image/jpg;base64")){
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return "jpg";
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}else if(filename.contains("data:image/jpeg;base64")){
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return "jpeg";
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}
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return "bmp";
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}
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/**
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* Java文件操作 获取不带扩展名的文件名
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*/
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public static String getFileNameNoEx(String filename) {
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if ((filename != null) && (filename.length() > 0)) {
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int dot = filename.lastIndexOf('.');
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if ((dot > -1) && (dot < (filename.length()))) {
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return filename.substring(0, dot);
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}
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}
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return filename;
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}
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/**
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* 文件大小转换
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*/
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public static String getSize(long size) {
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String resultSize;
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if (size / GB >= 1) {
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//如果当前Byte的值大于等于1GB
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resultSize = DF.format(size / (float) GB) + "GB ";
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} else if (size / MB >= 1) {
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//如果当前Byte的值大于等于1MB
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resultSize = DF.format(size / (float) MB) + "MB ";
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} else if (size / KB >= 1) {
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//如果当前Byte的值大于等于1KB
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resultSize = DF.format(size / (float) KB) + "KB ";
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} else {
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resultSize = size + "B ";
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}
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return resultSize;
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}
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/**
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* 将文件名解析成文件的上传路径
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*/
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public static File upload(MultipartFile file, String filePath) {
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//String name = getFileNameNoEx(file.getOriginalFilename());
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String suffix = getExtensionName(file.getOriginalFilename());
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StringBuffer nowStr = fileRename();
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try {
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String fileName = nowStr + "." + suffix;
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String path = filePath + fileName;
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// getCanonicalFile 可解析正确各种路径
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File dest = new File(path).getCanonicalFile();
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// 检测是否存在目录
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if (!dest.getParentFile().exists()) {
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dest.getParentFile().mkdirs();
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}
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// 文件写入
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file.transferTo(dest);
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return dest;
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} catch (Exception e) {
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e.printStackTrace();
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}
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return null;
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}
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public static String fileToBase64(File file) throws Exception {
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FileInputStream inputFile = new FileInputStream(file);
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String base64;
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byte[] buffer = new byte[(int) file.length()];
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inputFile.read(buffer);
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inputFile.close();
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base64 = Base64.encode(buffer);
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return base64.replaceAll("[\\s*\t\n\r]", "");
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}
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public static String getFileType(String type) {
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String documents = "txt doc pdf ppt pps xlsx xls docx";
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String music = "mp3 wav wma mpa ram ra aac aif m4a";
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String video = "avi mpg mpe mpeg asf wmv mov qt rm mp4 flv m4v webm ogv ogg";
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String image = "bmp dib pcp dif wmf gif jpg tif eps psd cdr iff tga pcd mpt png jpeg";
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if (image.contains(type)) {
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return "pic";
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} else if (documents.contains(type)) {
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return "txt";
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} else if (music.contains(type)) {
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return "music";
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} else if (video.contains(type)) {
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return "vedio";
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} else {
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return "other";
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}
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}
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public static void checkSize(long maxSize, long size) {
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// 1M
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int len = 1024 * 1024;
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if (size > (maxSize * len)) {
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throw new ServiceException("文件超出规定大小");
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}
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}
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/**
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* 判断两个文件是否相同
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*/
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public static boolean check(File file1, File file2) {
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String img1Md5 = getMd5(file1);
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String img2Md5 = getMd5(file2);
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return img1Md5.equals(img2Md5);
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}
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/**
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* 判断两个文件是否相同
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*/
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public static boolean check(String file1Md5, String file2Md5) {
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return file1Md5.equals(file2Md5);
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}
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private static byte[] getByte(File file) {
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// 得到文件长度
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byte[] b = new byte[(int) file.length()];
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try {
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InputStream in = new FileInputStream(file);
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try {
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in.read(b);
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} catch (IOException e) {
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e.printStackTrace();
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}
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} catch (FileNotFoundException e) {
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e.printStackTrace();
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return null;
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}
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return b;
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}
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private static String getMd5(byte[] bytes) {
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// 16进制字符
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char[] hexDigits = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
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try {
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MessageDigest mdTemp = MessageDigest.getInstance("MD5");
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mdTemp.update(bytes);
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byte[] md = mdTemp.digest();
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int j = md.length;
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char[] str = new char[j * 2];
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int k = 0;
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// 移位 输出字符串
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for (byte byte0 : md) {
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str[k++] = hexDigits[byte0 >>> 4 & 0xf];
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str[k++] = hexDigits[byte0 & 0xf];
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}
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return new String(str);
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} catch (Exception e) {
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e.printStackTrace();
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}
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return null;
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}
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/**
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* 下载文件
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*
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* @param request /
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* @param response /
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* @param file /
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*/
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public static void downloadFile(HttpServletRequest request, HttpServletResponse response, File file, boolean deleteOnExit) {
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response.setCharacterEncoding(request.getCharacterEncoding());
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response.setContentType("application/octet-stream");
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FileInputStream fis = null;
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try {
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fis = new FileInputStream(file);
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response.setHeader("Content-Disposition", "attachment; filename=" + file.getName());
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IOUtils.copy(fis, response.getOutputStream());
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response.flushBuffer();
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} catch (Exception e) {
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e.printStackTrace();
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} finally {
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if (fis != null) {
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try {
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fis.close();
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if (deleteOnExit) {
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file.deleteOnExit();
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}
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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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public static String getMd5(File file) {
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return getMd5(getByte(file));
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}
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/**
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* 读取json文件，返回json串
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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 readJsonFile(String fileName) {
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String jsonStr = "";
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try {
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File jsonFile = new File(fileName);
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FileReader fileReader = new FileReader(jsonFile);
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Reader reader = new InputStreamReader(new FileInputStream(jsonFile), "utf-8");
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int ch = 0;
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StringBuffer sb = new StringBuffer();
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while ((ch = reader.read()) != -1) {
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sb.append((char) ch);
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}
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fileReader.close();
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reader.close();
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jsonStr = sb.toString();
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return jsonStr;
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} catch (IOException e) {
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e.printStackTrace();
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return null;
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}
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}
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public static BufferedImage inputImage(MultipartFile file) {
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BufferedImage srcImage = null;
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try {
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FileInputStream in = (FileInputStream) file.getInputStream();
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srcImage = javax.imageio.ImageIO.read(in);
|
|
|
|
|
} catch (IOException e) {
|
|
|
|
|
System.out.println("读取图片文件出错！" + e.getMessage());
|
|
|
|
|
}
|
|
|
|
|
return srcImage;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 自动调节精度(经验数值)
|
|
|
|
|
*
|
|
|
|
|
* @param size 源图片大小
|
|
|
|
|
* @return 图片压缩质量比
|
|
|
|
|
*/
|
|
|
|
|
public static float getAccuracy(long size) {
|
|
|
|
|
float accuracy;
|
|
|
|
|
if (size < 400) {
|
|
|
|
|
accuracy = 0.85f;
|
|
|
|
|
} else if (size < 900) {
|
|
|
|
|
accuracy = 0.75f;
|
|
|
|
|
} else if (size < 2047) {
|
|
|
|
|
accuracy = 0.6f;
|
|
|
|
|
} else if (size < 3275) {
|
|
|
|
|
accuracy = 0.44f;
|
|
|
|
|
} else {
|
|
|
|
|
accuracy = 0.4f;
|
|
|
|
|
}
|
|
|
|
|
return accuracy;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 上传文件重命名
|
|
|
|
|
*
|
|
|
|
|
* @return 新的文件名
|
|
|
|
|
*/
|
|
|
|
|
public static StringBuffer fileRename() {
|
|
|
|
|
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmssSSS");
|
|
|
|
|
String time = sdf.format(new Date());
|
|
|
|
|
StringBuffer buf = new StringBuffer(time);
|
|
|
|
|
SecureRandom r = new SecureRandom();
|
|
|
|
|
//循环取得三个不大于10的随机整数
|
|
|
|
|
for (int x = 0; x < 3; x++) {
|
|
|
|
|
buf.append(r.nextInt(10));
|
|
|
|
|
}
|
|
|
|
|
return buf;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 对中文字符进行UTF-8编码
|
|
|
|
|
*
|
|
|
|
|
* @param source 要转义的字符串
|
|
|
|
|
* @return
|
|
|
|
|
* @throws UnsupportedEncodingException
|
|
|
|
|
*/
|
|
|
|
|
public static String transformStyle(String source) throws UnsupportedEncodingException {
|
|
|
|
|
char[] arr = source.toCharArray();
|
|
|
|
|
StringBuilder sb = new StringBuilder();
|
|
|
|
|
for (int i = 0; i < arr.length; i++) {
|
|
|
|
|
char temp = arr[i];
|
|
|
|
|
if (isChinese(temp)) {
|
|
|
|
|
sb.append(URLEncoder.encode("" + temp, Constants.UTF8));
|
|
|
|
|
continue;
|
|
|
|
|
}
|
|
|
|
|
sb.append(arr[i]);
|
|
|
|
|
}
|
|
|
|
|
return sb.toString();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 判断是不是中文字符
|
|
|
|
|
*
|
|
|
|
|
* @param c
|
|
|
|
|
* @return
|
|
|
|
|
*/
|
|
|
|
|
public static boolean isChinese(char c) {
|
|
|
|
|
|
|
|
|
|
Character.UnicodeBlock ub = Character.UnicodeBlock.of(c);
|
|
|
|
|
|
|
|
|
|
if (ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS
|
|
|
|
|
|
|
|
|
|
|| ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS
|
|
|
|
|
|
|
|
|
|
|| ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A
|
|
|
|
|
|
|
|
|
|
|| ub == Character.UnicodeBlock.GENERAL_PUNCTUATION
|
|
|
|
|
|
|
|
|
|
|| ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION
|
|
|
|
|
|
|
|
|
|
|| ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS) {
|
|
|
|
|
|
|
|
|
|
return true;
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return false;
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 上传文件重命名Mos系统
|
|
|
|
|
*
|
|
|
|
|
* @return 新的文件名
|
|
|
|
|
*/
|
|
|
|
|
public static String fileRenameMos(String prefix, String suffix) {
|
|
|
|
|
// 生成唯一的文件名[带前缀以及后缀]
|
|
|
|
|
String fileName = (prefix == null ? ""
|
|
|
|
|
: prefix.trim()) + UUIDUtils.generatorUUID() + (suffix == null ? ""
|
|
|
|
|
: suffix.trim());
|
|
|
|
|
return fileName;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 上传文件Mos系统
|
|
|
|
|
*/
|
|
|
|
|
public static File uploadMos(MultipartFile file, String path) {
|
|
|
|
|
try {
|
|
|
|
|
// getCanonicalFile 可解析正确各种路径
|
|
|
|
|
File dest = new File(path).getCanonicalFile();
|
|
|
|
|
// 检测是否存在目录
|
|
|
|
|
if (!dest.getParentFile().exists()) {
|
|
|
|
|
dest.getParentFile().mkdirs();
|
|
|
|
|
}
|
|
|
|
|
// 文件写入
|
|
|
|
|
file.transferTo(dest);
|
|
|
|
|
return dest;
|
|
|
|
|
} catch (Exception e) {
|
|
|
|
|
e.printStackTrace();
|
|
|
|
|
}
|
|
|
|
|
return null;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
public static File uploadMosBase64(String imageStr, String path) {
|
|
|
|
|
try {
|
|
|
|
|
// getCanonicalFile 可解析正确各种路径
|
|
|
|
|
File dest = new File(path).getCanonicalFile();
|
|
|
|
|
// 检测是否存在目录
|
|
|
|
|
if (!dest.getParentFile().exists()) {
|
|
|
|
|
dest.getParentFile().mkdirs();
|
|
|
|
|
}
|
|
|
|
|
byte[] bytes=Base64.decode(imageStr); //imageStr.getBytes();
|
|
|
|
|
FileOutputStream fos = new FileOutputStream(dest);
|
|
|
|
|
try{
|
|
|
|
|
// 文件写入
|
|
|
|
|
fos.write(bytes,0,bytes.length);
|
|
|
|
|
fos.flush();
|
|
|
|
|
}catch (IOException e){
|
|
|
|
|
e.printStackTrace();
|
|
|
|
|
}finally {
|
|
|
|
|
fos.close();
|
|
|
|
|
}
|
|
|
|
|
return dest;
|
|
|
|
|
} catch (Exception e) {
|
|
|
|
|
e.printStackTrace();
|
|
|
|
|
}
|
|
|
|
|
return null;
|
|
|
|
|
}
|
|
|
|
|
/**
|
|
|
|
|
* 读取文件，返回文件字符串.
|
|
|
|
|
*
|
|
|
|
|
* @param in 文件输入流
|
|
|
|
|
* @param encoding 文件编码
|
|
|
|
|
* @return String
|
|
|
|
|
*/
|
|
|
|
|
public static String readFile(InputStream in, String encoding) {
|
|
|
|
|
if (in == null) {
|
|
|
|
|
return null;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
StringBuffer sb = new StringBuffer();
|
|
|
|
|
InputStreamReader reader = null;
|
|
|
|
|
try {
|
|
|
|
|
reader = new InputStreamReader(in, encoding);
|
|
|
|
|
int tmp = -1;
|
|
|
|
|
char temp;
|
|
|
|
|
while ((tmp = reader.read()) != -1) {
|
|
|
|
|
temp = (char) tmp;
|
|
|
|
|
sb.append(temp);
|
|
|
|
|
}
|
|
|
|
|
} catch (Exception e) {
|
|
|
|
|
e.printStackTrace();
|
|
|
|
|
} finally {
|
|
|
|
|
if (reader != null) {
|
|
|
|
|
try {
|
|
|
|
|
reader.close();
|
|
|
|
|
} catch (IOException e) {
|
|
|
|
|
e.printStackTrace();
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
if (in != null) {
|
|
|
|
|
try {
|
|
|
|
|
in.close();
|
|
|
|
|
} catch (IOException e) {
|
|
|
|
|
e.printStackTrace();
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return sb.toString();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 将inputStream写入文件并关闭inputStream.
|
|
|
|
|
*
|
|
|
|
|
* @param is 文件输入流
|
|
|
|
|
* @param filePath 文件路径
|
|
|
|
|
* @param append true为追加，false为覆盖
|
|
|
|
|
* @return 是否成功
|
|
|
|
|
*/
|
|
|
|
|
public static boolean writeFile(InputStream is, String filePath,
|
|
|
|
|
boolean append) {
|
|
|
|
|
FileOutputStream fos = null;
|
|
|
|
|
try {
|
|
|
|
|
if (makeDir(filePath) && is != null) {
|
|
|
|
|
fos = new FileOutputStream(filePath, append);
|
|
|
|
|
byte[] buffer = new byte[FILE_READ_BTYE * FILE_READ_BTYE];
|
|
|
|
|
// int bytesum = 0;
|
|
|
|
|
int byteread = 0;
|
|
|
|
|
while ((byteread = is.read(buffer)) != -1) {
|
|
|
|
|
// bytesum+=byteread;
|
|
|
|
|
fos.write(buffer, 0, byteread);
|
|
|
|
|
fos.flush();
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
} catch (Exception e) {
|
|
|
|
|
e.printStackTrace();
|
|
|
|
|
} finally {
|
|
|
|
|
if (fos != null) {
|
|
|
|
|
try {
|
|
|
|
|
fos.close();
|
|
|
|
|
} catch (IOException e) {
|
|
|
|
|
e.printStackTrace();
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
if (is != null) {
|
|
|
|
|
try {
|
|
|
|
|
is.close();
|
|
|
|
|
} catch (IOException e) {
|
|
|
|
|
e.printStackTrace();
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 将字符串写入到文件.
|
|
|
|
|
*
|
|
|
|
|
* @param str 字符串
|
|
|
|
|
* @param filePath 文件路径
|
|
|
|
|
* @param encoding 编码
|
|
|
|
|
* @param append 是否累加
|
|
|
|
|
* @return 是否成功
|
|
|
|
|
*/
|
|
|
|
|
public static boolean writeFile(String str, String filePath,
|
|
|
|
|
String encoding, boolean append) {
|
|
|
|
|
FileOutputStream fos = null;
|
|
|
|
|
Writer out = null;
|
|
|
|
|
boolean isSucc = false;
|
|
|
|
|
try {
|
|
|
|
|
if (makeDir(filePath)) {
|
|
|
|
|
fos = new FileOutputStream(new File(filePath), append);
|
|
|
|
|
out = new OutputStreamWriter(fos, encoding);
|
|
|
|
|
out.write(str);
|
|
|
|
|
|
|
|
|
|
out.flush();
|
|
|
|
|
out.close();
|
|
|
|
|
|
|
|
|
|
fos.flush();
|
|
|
|
|
fos.close();
|
|
|
|
|
} else {
|
|
|
|
|
isSucc = false;
|
|
|
|
|
}
|
|
|
|
|
isSucc = true;
|
|
|
|
|
} catch (IOException e) {
|
|
|
|
|
e.printStackTrace();
|
|
|
|
|
isSucc = false;
|
|
|
|
|
} finally {
|
|
|
|
|
if (fos != null) {
|
|
|
|
|
try {
|
|
|
|
|
fos.close();
|
|
|
|
|
} catch (IOException e) {
|
|
|
|
|
e.printStackTrace();
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
if (out != null) {
|
|
|
|
|
try {
|
|
|
|
|
out.close();
|
|
|
|
|
} catch (IOException e) {
|
|
|
|
|
e.printStackTrace();
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
return isSucc;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 根据文件创建目录.
|
|
|
|
|
*
|
|
|
|
|
* @param file 文件
|
|
|
|
|
* @return 是否成功
|
|
|
|
|
*/
|
|
|
|
|
public static boolean makeDir(File file) {
|
|
|
|
|
if (!file.exists()) {
|
|
|
|
|
makeDir(file.getAbsolutePath());
|
|
|
|
|
}
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 根据文件名创建目录
|
|
|
|
|
*
|
|
|
|
|
* @param fileName
|
|
|
|
|
* @return
|
|
|
|
|
*/
|
|
|
|
|
public static boolean makeDir(String fileName) {
|
|
|
|
|
int index = 0;
|
|
|
|
|
int index1 = fileName.lastIndexOf("/");
|
|
|
|
|
int index2 = fileName.lastIndexOf("\\");
|
|
|
|
|
if (index1 > index2) {
|
|
|
|
|
index = index1;
|
|
|
|
|
} else {
|
|
|
|
|
index = index2;
|
|
|
|
|
}
|
|
|
|
|
fileName = fileName.substring(0, index);
|
|
|
|
|
File file = new File(fileName);
|
|
|
|
|
file.setWritable(true, false);
|
|
|
|
|
if (!file.exists()) {
|
|
|
|
|
if (!file.mkdirs()) {
|
|
|
|
|
return false;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 删除单个文件 。
|
|
|
|
|
*
|
|
|
|
|
* @param sPath 被删除文件的文件名
|
|
|
|
|
* @return 单个文件删除成功返回true，否则返回false
|
|
|
|
|
*/
|
|
|
|
|
public static boolean deleteFile(String sPath) {
|
|
|
|
|
Boolean flag = false;
|
|
|
|
|
File file = new File(sPath);
|
|
|
|
|
// 路径为文件且不为空则进行删除
|
|
|
|
|
if (file.isFile() && file.exists()) {
|
|
|
|
|
file.delete();
|
|
|
|
|
flag = true;
|
|
|
|
|
}
|
|
|
|
|
return flag;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 删除单个文件 。
|
|
|
|
|
*
|
|
|
|
|
* @param file 被删除文件
|
|
|
|
|
* @return 单个文件删除成功返回true，否则返回false
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*/
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public static boolean deleteFile(File file) {
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Boolean flag = false;
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// 路径为文件且不为空则进行删除
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if (file.isFile() && file.exists()) {
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file.delete();
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flag = true;
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}
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return flag;
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}
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/**
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* 删除文件夹。
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*
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* @param sPath 文件夹路径
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* @param flags true删除文件夹，false只删除文件夹下的文件
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* @return 是否删除成功
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*/
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public static boolean deleteDirectory(String sPath, Boolean flags) {
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// 如果sPath不以文件分隔符结尾，自动添加文件分隔符
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if (!sPath.endsWith(File.separator)) {
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sPath = sPath + File.separator;
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}
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File dirFile = new File(sPath);
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// 如果dir对应的文件不存在，或者不是一个目录，则退出
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if (!dirFile.exists() || !dirFile.isDirectory()) {
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return false;
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}
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Boolean flag = true;
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// 删除文件夹下的所有文件(包括子目录)
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File[] files = dirFile.listFiles();
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for (int i = 0; i < files.length; i++) {
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// 删除子文件
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if (files[i].isFile()) {
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flag = deleteFile(files[i].getAbsolutePath());
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|
if (!flag) {
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break;
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}
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} else {
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|
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// 删除子目录
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|
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flag = deleteDirectory(files[i].getAbsolutePath(), true);
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|
if (!flag) {
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|
|
break;
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|
}
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|
|
}
|
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}
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|
if (!flag) {
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return false;
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}
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|
|
if (flags) {
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|
|
// 删除当前目录
|
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|
|
return dirFile.delete();
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}
|
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|
|
return true;
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|
}
|
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/**
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|
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* inputStream 转 File
|
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|
|
*/
|
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|
|
static File inputStreamToFile(InputStream ins, String name) throws Exception {
|
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|
|
File file = new File(SYS_TEM_DIR + name);
|
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|
|
if (file.exists()) {
|
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|
|
return file;
|
|
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|
|
}
|
|
|
|
|
OutputStream os = new FileOutputStream(file);
|
|
|
|
|
int bytesRead;
|
|
|
|
|
int len = 8192;
|
|
|
|
|
byte[] buffer = new byte[len];
|
|
|
|
|
while ((bytesRead = ins.read(buffer, 0, len)) != -1) {
|
|
|
|
|
os.write(buffer, 0, bytesRead);
|
|
|
|
|
}
|
|
|
|
|
os.close();
|
|
|
|
|
ins.close();
|
|
|
|
|
return file;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 导出excel
|
|
|
|
|
*/
|
|
|
|
|
public static void downloadExcel(List<Map<String, Object>> list, HttpServletResponse response) throws IOException {
|
|
|
|
|
String tempPath = SYS_TEM_DIR + IdUtil.fastSimpleUUID() + ".xlsx";
|
|
|
|
|
File file = new File(tempPath);
|
|
|
|
|
BigExcelWriter writer = ExcelUtil.getBigWriter(file);
|
|
|
|
|
// 一次性写出内容，使用默认样式，强制输出标题
|
|
|
|
|
writer.write(list, true);
|
|
|
|
|
SXSSFSheet sheet = (SXSSFSheet) writer.getSheet();
|
|
|
|
|
//上面需要强转SXSSFSheet 不然没有trackAllColumnsForAutoSizing方法
|
|
|
|
|
sheet.trackAllColumnsForAutoSizing();
|
|
|
|
|
//列宽自适应
|
|
|
|
|
writer.autoSizeColumnAll();
|
|
|
|
|
//response为HttpServletResponse对象
|
|
|
|
|
response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=utf-8");
|
|
|
|
|
//test.xls是弹出下载对话框的文件名，不能为中文，中文请自行编码
|
|
|
|
|
response.setHeader("Content-Disposition", "attachment;filename=file.xlsx");
|
|
|
|
|
ServletOutputStream out = response.getOutputStream();
|
|
|
|
|
// 终止后删除临时文件
|
|
|
|
|
file.deleteOnExit();
|
|
|
|
|
writer.flush(out, true);
|
|
|
|
|
//此处记得关闭输出Servlet流
|
|
|
|
|
IoUtil.close(out);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
}
|
username
1 week ago