文件上傳工具類

FileUtil.java

package com.cmbchina.ccd.itpm.utils;

import org.springframework.web.multipart.MultipartFile;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.UUID;

import static org.apache.tomcat.util.http.fileupload.FileUtils.cleanDirectory;

public class FileUtil {
    private FileUtil() {

    }

    public static void uploadFile(byte[] file, String filePath, String fileName) throws IOException {
        File targetFile = new File(filePath);
        if (!targetFile.exists()) {
            if (!targetFile.mkdirs()) {
                throw new IOException();
            }
        }
        FileOutputStream out = null;
        try {
            out = new FileOutputStream(filePath + fileName);
            out.write(file);
            out.flush();
        } catch (IOException e) {
            throw new IOException();
        } finally {
            if (out != null) {
                out.close();
            }
        }
    }

    public static boolean deleteFile(String fileName) {
        File file = new File(fileName);
        // 如果文件路徑所對應的文件存在，並且是一個文件，則直接刪除
        if (file.exists() && file.isFile()) {
            if (file.delete()) {
                return true;
            } else {
                return false;
            }
        }
        return false;

    }

    public static String renameToUUID(String fileName) {
        return UUID.randomUUID() + "." + fileName.substring(fileName.lastIndexOf(".") + 1);
    }

    /**
     * 文件刪除方法
     *
     * @param fileAddress
     * @return
     */
    public static boolean deleteQuietly(String fileAddress) {
        File file = new File(fileAddress);
        if (file == null) {
            return false;
        } else {
            try {
                if (file.isDirectory()) {
                    cleanDirectory(file);
                }
            } catch (Exception var3) {
                ;
            }

            try {
                return file.delete();
            } catch (Exception var2) {
                return false;
            }
        }
    }

    /**
     * 文件保存方法
     *
     * @param file
     * @param destination
     * @return
     * @throws IllegalStateException
     * @throws IOException
     */
    public static String saveFile(MultipartFile file, String destination) throws IllegalStateException, IOException {
        // 獲取上傳的文件名稱，並結合存放路徑，構建新的文件名稱
        String filename = file.getOriginalFilename();
        File filepath = new File(destination, filename);

        // 判斷路徑是否存在，不存在則新創建一個
        if (!filepath.getParentFile().exists()) {
            filepath.getParentFile().mkdirs();
        }

        // 將上傳文件保存到目標文件目錄
        file.transferTo(new File(destination + File.separator + filename));
        String fileMD5String = MD5Util.getFileMD5String(new File(destination + File.separator + filename));
        return fileMD5String;
    }

}