ipfcst-v3.3/ipfcst-spare2/src/main/java/com/jiayue/ipfcst/spare2/util/FilesUtil.java

package com.jiayue.ipfcst.spare2.util;

import cn.hutool.core.io.FileUtil;
import com.jiayue.ipfcst.common.data.util.CommonDataUtil;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.io.FileUtils;

import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.LinkOption;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.attribute.BasicFileAttributeView;
import java.nio.file.attribute.BasicFileAttributes;
import java.security.MessageDigest;
import java.util.Date;

/**
 * 文件工具类
 *
 * @author xsl
 * @version 3.0
 */
@Slf4j
public class FilesUtil extends CommonDataUtil {

    private static final String imageFileSuffix = "txt";

    public static <T> String imageFileName(Class<T> clazz) {
        return clazz.getSimpleName() + "." + imageFileSuffix;
    }

    /**
     * 移动本地文件
     *
     * @param remoteAbsoluteFile 远程文件名(包括完整路径)
     * @param localAbsoluteFile  本地文件名(包括完整路径)
     * @return 成功时，返回true，失败返回false
     * @throws Exception
     */
    public static void move(String localAbsoluteFile, String remoteAbsoluteFile) throws Exception {
        move(localAbsoluteFile, remoteAbsoluteFile, true);
    }

    public static void move(String localAbsoluteFile, String remoteAbsoluteFile, boolean overwrite) throws Exception {
        File srcFile = new File(localAbsoluteFile);
        File destDir = new File(remoteAbsoluteFile);
        StringBuilder opts = new StringBuilder();
        try {
            if (!destDir.exists()) {// 如果目录不存在则创建目录
                boolean b = destDir.mkdirs();
                if (!b) // 如果创建失败则抛出异常
                    throw new RuntimeException(destDir + " 目录创建失败");
            }
            File desFile = new File(remoteAbsoluteFile + File.separator + srcFile.getName());
            if (overwrite && desFile.exists()) {
                FileUtils.deleteQuietly(desFile);
                opts.append(" >> 覆盖 >> ");
            } else {
                opts.append(" >> 移动 >> ");
            }
            FileUtils.moveFile(srcFile, desFile);
            log.info("文件：" + srcFile.getName() + opts + destDir.getPath());
        } catch (IOException e) {
            throw new Exception("文件：" + srcFile.getName() + opts + destDir.getPath() + "失败。", e);
        }
    }

    //文件内容md5加密
    public static String getMD5(byte[] fileByte) {
        String md5 = new String();
        try {
            MessageDigest md = MessageDigest.getInstance("MD5");
            md.update(fileByte);
            byte b[] = md.digest();

            int i;

            StringBuffer buf = new StringBuffer("");
            for (int offset = 0; offset < b.length; offset++) {
                i = b[offset];
                if (i < 0)
                    i += 256;
                if (i < 16)
                    buf.append("0");
                buf.append(Integer.toHexString(i));
            }

            md5 = buf.toString();

        } catch (Exception e) {
            e.printStackTrace();
        }
        return md5;
    }

    /**
     * 获取文件创建时间
     *
     * @param fullFileName
     * @return
     */
    public static Long getFileCreateTime(String fullFileName) {
        Path path = Paths.get(fullFileName);
        BasicFileAttributeView basicview = Files.getFileAttributeView(path, BasicFileAttributeView.class, LinkOption.NOFOLLOW_LINKS);
        BasicFileAttributes attr;
        try {
            attr = basicview.readAttributes();
            Date createDate = new Date(attr.creationTime().toMillis());
            return createDate.getTime();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return new Date().getTime();
    }

    /**
     * 检查uploadfile目录下是否生成过文件{name}
     * @param name
     * @return
     */
    public static boolean checkUpGened(String name) {
        return FileUtil.exist(getFileUploadPath(), name);
    }

}