【阿里OSS】java後臺集成OSS的SDK之版本升級及工具封裝

環境：

maven 3.0

jdk 1.8

原oss版本2.8.3

升級後爲：3.5.0

pom依賴：

<!-- 阿里OSS -->
<dependency>
  <groupId>com.aliyun.oss</groupId>
  <artifactId>aliyun-sdk-oss</artifactId>
  <!--<version>2.8.3</version>-->
  <version>3.5.0</version>
</dependency>

配置文件添加：

 

# ======= 阿里OSS配置 =========
aliyun.OSS.endpoint=http://oss-cn-beijing.aliyuncs.com
aliyun.OSS.accessKeyId= 自個的KEY
aliyun.OSS.accessKeySecret= 同上
aliyun.OSS.bucketName=afinal2mc #自己定義的存儲空間
aliyun.OSS.filedir=sys/ #自己在存儲空間創建的文件夾
aliyun.OSS.fileMaxSize=10 #文件上傳最大M數

 封裝util

import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.model.DeleteObjectsRequest;
import com.aliyun.oss.model.DeleteObjectsResult;
import com.aliyun.oss.model.ObjectMetadata;
import com.aliyun.oss.model.PutObjectResult;
import com.jeeplus.common.utils.DateUtils;
import com.jeeplus.common.utils.PropertiesLoader;
import com.jeeplus.common.utils.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.stereotype.Component;
import org.springframework.web.multipart.MultipartFile;

import java.io.*;
import java.net.URL;
import java.util.Date;
import java.util.List;

/**
 * @ProjectName: Hematopathy
 * @Package: com.jeeplus.oss.utils
 * @ClassName: OSSUtil
 * @Author: MC
 * @Description: ${description}
 * @Date: 2019/11/16 0016 10:34
 * @Version: 1.0
 */
@Component
public class OSSClientUtil {
    protected PropertiesLoader loader = new PropertiesLoader("你的.properties"); //獲取配置文件參數

    Log log = LogFactory.getLog(OSSClientUtil.class);
    private String endpoint = loader.getProperty("aliyun.OSS.endpoint");
    private String accessKeyId = loader.getProperty("aliyun.OSS.accessKeyId");
    private String accessKeySecret = loader.getProperty("aliyun.OSS.accessKeySecret");
    //空間
    private String bucketName = loader.getProperty("aliyun.OSS.bucketName");
    //文件存儲目錄
    private String filedir = loader.getProperty("aliyun.OSS.filedir");
    //上傳最大限制
    private int fileMaxSize = Integer.parseInt(loader.getProperty("aliyun.OSS.fileMaxSize"));


    public OSS getOssClient(){
        return new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
    }

    /**
     * 銷燬
     */
    public void destory(OSS ossClient) {
        ossClient.shutdown();
    }

    /**
     * 上傳圖片
     *
     * @param url
     */
    public void uploadImg2Oss(String url,OSS ossClient) throws FileNotFoundException {
        File fileOnServer = new File(url);
        FileInputStream fin;
        fin = new FileInputStream(fileOnServer);
        String[] split = url.split("/");
        this.uploadFile2OSS(fin, split[split.length - 1],ossClient);
    }


    public String uploadImg2Oss(MultipartFile file,OSS ossClient) throws IOException {
        if (file.getSize() > 1024 * 1024 * fileMaxSize) {
            throw new IOException("上傳圖片大小不能超過"+fileMaxSize+"M！");
        }
        String originalFilename = file.getOriginalFilename();
        String substring = originalFilename.substring(originalFilename.lastIndexOf(".")).toLowerCase();
        Date now = new Date();
        String nowStr = DateUtils.formatDateTime(now);
        String name = nowStr.replace(" ","MC") + substring;
        InputStream inputStream = file.getInputStream();
        this.uploadFile2OSS(inputStream, name,ossClient);
        return name;
    }

    /**
     * 獲得圖片路徑
     *
     * @param fileUrl
     * @return
     */
    public String getImgUrl(String fileUrl,OSS ossClient) {
        if (!StringUtils.isEmpty(fileUrl)) {
            String[] split = fileUrl.split("/");
            return this.getUrl(this.filedir + split[split.length - 1],ossClient);
        }
        return null;
    }

    /**
     * 上傳到OSS服務器  如果同名文件會覆蓋服務器上的
     *
     * @param instream 文件流
     * @param fileName 文件名稱 包括後綴名
     * @return 出錯返回"" ,唯一MD5數字簽名
     */
    public String uploadFile2OSS(InputStream instream, String fileName,OSS ossClient) {
        String ret = "";
        try {
            //創建上傳Object的Metadata
            ObjectMetadata objectMetadata = new ObjectMetadata();
            objectMetadata.setContentLength(instream.available());
            objectMetadata.setCacheControl("no-cache");
            objectMetadata.setHeader("Pragma", "no-cache");
            objectMetadata.setContentType(getcontentType(fileName.substring(fileName.lastIndexOf("."))));
            objectMetadata.setContentDisposition("inline;filename=" + fileName);
            //上傳文件
            PutObjectResult putResult = ossClient.putObject(bucketName, filedir + fileName, instream, objectMetadata);
            ret = putResult.getETag();
        } catch (IOException e) {
            log.error(e.getMessage(), e);
        } finally {
            try {
                if (instream != null) {
                    instream.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return ret;
    }

    /**
     * Description: 判斷OSS服務文件上傳時文件的contentType
     *
     * @param FilenameExtension 文件後綴
     * @return String
     */
    public static String getcontentType(String FilenameExtension) {
        if (FilenameExtension.equalsIgnoreCase(".bmp")) {
            return "image/bmp";
        }
        if (FilenameExtension.equalsIgnoreCase(".gif")) {
            return "image/gif";
        }
        if (FilenameExtension.equalsIgnoreCase(".jpeg") ||
                FilenameExtension.equalsIgnoreCase(".jpg") ||
                FilenameExtension.equalsIgnoreCase(".png")) {
            return "image/jpeg";
        }
        if (FilenameExtension.equalsIgnoreCase(".html")) {
            return "text/html";
        }
        if (FilenameExtension.equalsIgnoreCase(".txt")) {
            return "text/plain";
        }
        if (FilenameExtension.equalsIgnoreCase(".vsd")) {
            return "application/vnd.visio";
        }
        if (FilenameExtension.equalsIgnoreCase(".pptx") ||
                FilenameExtension.equalsIgnoreCase(".ppt")) {
            return "application/vnd.ms-powerpoint";
        }
        if (FilenameExtension.equalsIgnoreCase(".docx") ||
                FilenameExtension.equalsIgnoreCase(".doc")) {
            return "application/msword";
        }
        if (FilenameExtension.equalsIgnoreCase(".xml")) {
            return "text/xml";
        }
        return "image/jpeg";
    }

    /**
     * 獲得url鏈接
     *
     * @param key
     * @return
     */
    public String getUrl(String key,OSS ossClient) {
        // 設置URL過期時間爲10年  3600l* 1000*24*365*10
        Date nowDate = new Date();
        long time = nowDate.getTime();
        Date expiration = new Date( time + 3600L * 1000 * 24 * 365 * 10);
        // 生成URL
        URL url = ossClient.generatePresignedUrl(bucketName, key, expiration);
        if (url != null) {
            return url.toString();
        }
        return null;
    }




    /**
     * 刪除某個Object
     * http://127.0.0.1:8080/a/oss/del?url= sys/2019-11-16MC11:34:52.png
     * @param bucketUrl
     * @return
     */
    public boolean deleteObject(String bucketUrl,OSS ossClient) {
      try {
          boolean b = ossClient.doesObjectExist(bucketName, bucketUrl);
          System.out.println("查詢文件是否存在："+b + "=================================");
          if(!b){
              System.out.println("Error: OSS file not find,file:{} ===============");
              return false;
          }
          // 刪除Object.
          ossClient.deleteObject(bucketName, bucketUrl);
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        } finally {
           this.destory(ossClient);
        }
        return true;
    }

    /**
     * 刪除多個Object
     *
     * @param bucketUrls
     * @return
     */
    public boolean deleteObjects(List<String> bucketUrls,OSS ossClient) {
        try {
            // 刪除Object.
            DeleteObjectsResult deleteObjectsResult = ossClient.deleteObjects(new DeleteObjectsRequest(bucketName).withKeys(bucketUrls));
            List<String> deletedObjects = deleteObjectsResult.getDeletedObjects();
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        } finally {
            this.destory(ossClient);
        }
        return true;
    }
}

注意：2.0+使用的是OSSClient對象，而3.0+使用的是OSS對象。
創建方式也不一樣，一個是newOSSClient一個是通過Builder對象獲取

附帶的日期工具類：

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;

import org.apache.commons.lang3.time.DateFormatUtils;

/**
 * 日期工具類, 繼承org.apache.commons.lang.time.DateUtils類
 * 
 * @author jeeplus
 * @version 2014-4-15
 */
public class DateUtils extends org.apache.commons.lang3.time.DateUtils {
   
   public static final String PATTERN_STANDARD = "yyyy-MM-dd HH:mm:ss";

   public static final String PATTERN_DATE = "yyyy-MM-dd";
   
   public static final String PARRERN_Hour_Minute = "HH:mm";

   private static String[] parsePatterns = { "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM",
         "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM", "yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss",
         "yyyy.MM.dd HH:mm", "yyyy.MM" };

   /**
    * 得到幾天前的時間
    * 
    * @param d
    * @param day
    * @return
    */
   public static Date getDateBefore(Date d, int day) {
      Calendar no = Calendar.getInstance();
      no.setTime(d);
      no.set(Calendar.DATE, no.get(Calendar.DATE) - day);
      return no.getTime();
   }

   /**
    * 得到當前日期字符串 格式（yyyy-MM-dd）
    */
   public static String getDate() {
      return getDate("yyyy-MM-dd");
   }

   /**
    * 得到當前日期字符串 格式（yyyy-MM-dd） pattern可以爲："yyyy-MM-dd" "HH:mm:ss" "E"
    */
   public static String getDate(String pattern) {
      return DateFormatUtils.format(new Date(), pattern);
   }

   /**
    * 得到日期字符串 默認格式（yyyy-MM-dd） pattern可以爲："yyyy-MM-dd" "HH:mm:ss" "E"
    */
   public static String formatDate(Date date, Object... pattern) {
      String formatDate = null;
      if (pattern != null && pattern.length > 0) {
         formatDate = DateFormatUtils.format(date, pattern[0].toString());
      } else {
         formatDate = DateFormatUtils.format(date, "yyyy-MM-dd");
      }
      return formatDate;
   }

   /**
    * 得到日期時間字符串，轉換格式（yyyy-MM-dd HH:mm:ss）
    */
   public static String formatDateTime(Date date) {
      return formatDate(date, "yyyy-MM-dd HH:mm:ss");
   }

   /**
    * 得到當前時間字符串 格式（HH:mm:ss）
    */
   public static String getTime() {
      return formatDate(new Date(), "HH:mm:ss");
   }

   /**
    * 得到當前日期和時間字符串 格式（yyyy-MM-dd HH:mm:ss）
    */
   public static String getDateTime() {
      return formatDate(new Date(), "yyyy-MM-dd HH:mm:ss");
   }

   /**
    * 得到當前年份字符串 格式（yyyy）
    */
   public static String getYear() {
      return formatDate(new Date(), "yyyy");
   }

   /**
    * 得到當前月份字符串 格式（MM）
    */
   public static String getMonth() {
      return formatDate(new Date(), "MM");
   }

   /**
    * 得到當天字符串 格式（dd）
    */
   public static String getDay() {
      return formatDate(new Date(), "dd");
   }

   /**
    * 得到當前星期字符串 格式（E）星期幾
    */
   public static String getWeek() {
      return formatDate(new Date(), "E");
   }
   
   public static int getWeekInt(){
      String week = getWeek();
      week = week.substring(week.length()-1, week.length());
      int weekInt = 0;
      if(week.equals("一")){
         return weekInt = 1;
      }else if(week.equals("二")){
         return weekInt = 2;
      }else if(week.equals("三")){
         return weekInt = 3;
      }else if(week.equals("四")){
         return weekInt = 4;
      }else if(week.equals("五")){
         return weekInt = 5;
      }else if(week.equals("六")){
         return weekInt = 6;
      }else {
         return weekInt = 7;
      }
   }

   /**
    * 日期型字符串轉化爲日期 格式 { "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm",
    * "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy.MM.dd",
    * "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm" }
    */
   public static Date parseDate(Object str) {
      if (str == null) {
         return null;
      }
      try {
         return parseDate(str.toString(), parsePatterns);
      } catch (ParseException e) {
         return null;
      }
   }

   /**
    * 獲取過去的天數
    * 
    * @param date
    * @return
    */
   public static long pastDays(Date date) {
      long t = System.currentTimeMillis() - date.getTime();
      return t / (24 * 60 * 60 * 1000);
   }

   /**
    * 獲取過去的小時
    * 
    * @param date
    * @return
    */
   public static long pastHour(Date date) {
      long t = System.currentTimeMillis()  - date.getTime();
      return t / (60 * 60 * 1000);
   }

   /**
    * 獲取過去的分鐘
    * 
    * @param date
    * @return
    */
   public static long pastMinutes(Date date) {
      long t = System.currentTimeMillis()  - date.getTime();
      return t / (60 * 1000);
   }

   /**
    * 轉換爲時間（天,時:分:秒.毫秒）
    * 
    * @param timeMillis
    * @return
    */
   public static String formatDateTime(long timeMillis) {
      long day = timeMillis / (24 * 60 * 60 * 1000);
      long hour = (timeMillis / (60 * 60 * 1000) - day * 24);
      long min = ((timeMillis / (60 * 1000)) - day * 24 * 60 - hour * 60);
      long s = (timeMillis / 1000 - day * 24 * 60 * 60 - hour * 60 * 60 - min * 60);
      long sss = (timeMillis - day * 24 * 60 * 60 * 1000 - hour * 60 * 60 * 1000 - min * 60 * 1000 - s * 1000);
      return (day > 0 ? day + "," : "") + hour + ":" + min + ":" + s + "." + sss;
   }

   /**
    * 獲取兩個日期之間的天數
    * 
    * @param before
    * @param after
    * @return
    */
   public static int getDistanceOfTwoDate(Date before, Date after) {
      long beforeTime = before.getTime();
      long afterTime = after.getTime();
      return (int) ((afterTime - beforeTime) / (1000 * 60 * 60 * 24));
   }

   /**
    * 字符串轉日期
    * 
    * @param strDate
    *            字符串日期
    * @param pattern
    *            需要轉換成的類型（YYYY-mm-dd）
    * @return
    */
   public static Date string2Date(String strDate, String pattern) {
      if (strDate == null || strDate.equals("")) {
         throw new RuntimeException("str date null");
      }
      if (pattern == null || pattern.equals("")) {
         pattern = DateUtils.PATTERN_DATE;
      }
      SimpleDateFormat sdf = new SimpleDateFormat(pattern);
      Date date = null;

      try {
         date = sdf.parse(strDate);
      } catch (ParseException e) {
         throw new RuntimeException(e);
      }
      return date;
   }
   //根據給定的時間算出間隔天數
   public static String getBetweenDay(Date startDate,Date endDate){
      long res=endDate.getTime()-startDate.getTime();
      res=res/24/60/60/1000;
      return Long.toString(res);
   }
   //獲取距今7天每天的日期，轉換成string
   public static List<String> getDateStringList(){
      long time=86400000;
      Date date=new Date();
      List<String> list=new ArrayList<String>();
      for (int i = 6; i >0 ; i--) {
         Date date2=new Date();
         long t=date.getTime()-time*i;
         date2.setTime(t);
         list.add(DateUtils.formatDateTime(date2));
      }
      list.add(DateUtils.formatDateTime(date));
      return list;
   }
   public static List<Date> getDateList(Date before, Date after, String str,String medicine_cycle) {
      long frequency=1;
      if ("medicine_cycle01".equals(medicine_cycle)) {
         frequency=1;
      }else if("medicine_cycle02".equals(medicine_cycle)){
         frequency=2;
      }else if("medicine_cycle03".equals(medicine_cycle)){
         frequency=3;
      }else if("medicine_cycle04".equals(medicine_cycle)){
         frequency=7;
      }else if("medicine_cycle05".equals(medicine_cycle)){
         frequency=14;
      }else if("medicine_cycle06".equals(medicine_cycle)){
         frequency=30;
      }
      List<Date> dates = new ArrayList<Date>();
      long beforeTime = before.getTime();
      long afterTime = after.getTime();
      long day=1000 * 60 * 60 * 24*frequency;
      int days = (int) ((afterTime - beforeTime) / (1000 * 60 * 60 * 24*frequency));
      if (days>0) {
         for (int i = 0; i <=days; i++) {
            if (null != str && !"".equals(str)) {
               if (str.contains(";")) {
                  String[] strings = str.split(";");
                  for (String string : strings) {
                     if (string.contains(":")) {
                        String[] strings2 = string.split(":");
                        Integer hour = Integer.parseInt(strings2[0]);
                        Integer min = Integer.parseInt(strings2[1]);
                        long time = 1000 * 60 * 60 * hour + 1000 * 60 * min;
                        Date date=new Date();
                        if (i==0) {
                           date.setTime(beforeTime+time);
                           dates.add(date);
                        }else {
                           beforeTime=beforeTime+day;
                           date.setTime(beforeTime+time);
                           dates.add(date);
                        }
                     } else if (string.contains("：")) {
                        String[] strings2 = string.split("：");
                        Integer hour = Integer.parseInt(strings2[0]);
                        Integer min = Integer.parseInt(strings2[1]);
                        long time = 1000 * 60 * 60 * hour + 1000 * 60 * min;
                        Date date=new Date();
                        if (i==0) {
                           date.setTime(beforeTime+time);
                           dates.add(date);
                        }else{
                           beforeTime=beforeTime+day;
                           date.setTime(beforeTime+time);
                           dates.add(date);
                        }
                     }
                  }
               } else {
                  if (str.contains(":")) {
                     String[] strings2 = str.split(":");
                     Integer hour = Integer.parseInt(strings2[0]);
                     Integer min = Integer.parseInt(strings2[1]);
                     long time = 1000 * 60 * 60 * hour + 1000 * 60 * min;
                     Date date=new Date();
                     if (i==0) {
                        date.setTime(beforeTime+time);
                        dates.add(date);
                     }else{
                        beforeTime=beforeTime+day;
                        date.setTime(beforeTime+time);
                        dates.add(date);
                     }
                     
                  } else if (str.contains("：")) {
                     String[] strings2 = str.split("：");
                     Integer hour = Integer.parseInt(strings2[0]);
                     Integer min = Integer.parseInt(strings2[1]);
                     long time = 1000 * 60 * 60 * hour + 1000 * 60 * min;
                     Date date=new Date();
                     if (i==0) {
                        date.setTime(beforeTime+time);
                        dates.add(date);
                     }else{
                        beforeTime=beforeTime+day;
                        date.setTime(beforeTime+time);
                        dates.add(date);
                     }
                  }
               }
            }
         }
      }else{
         if (null != str && !"".equals(str)) {
            if (str.contains(";")) {
               String[] strings = str.split(";");
               for (String string : strings) {
                  if (string.contains(":")) {
                     String[] strings2 = string.split(":");
                     Integer hour = Integer.parseInt(strings2[0]);
                     Integer min = Integer.parseInt(strings2[1]);
                     long time = 1000 * 60 * 60 * hour + 1000 * 60 * min;
                     Date date=new Date();
                     date.setTime(beforeTime+time);
                     dates.add(date);
                  } else if (string.contains("：")) {
                     String[] strings2 = string.split("：");
                     Integer hour = Integer.parseInt(strings2[0]);
                     Integer min = Integer.parseInt(strings2[1]);
                     long time = 1000 * 60 * 60 * hour + 1000 * 60 * min;
                     Date date=new Date();
                     date.setTime(beforeTime+time);
                     dates.add(date);
                  }
               }
            } else {
               if (str.contains(":")) {
                  String[] strings2 = str.split(":");
                  Integer hour = Integer.parseInt(strings2[0]);
                  Integer min = Integer.parseInt(strings2[1]);
                  long time = 1000 * 60 * 60 * hour + 1000 * 60 * min;
                  Date date=new Date();
                  date.setTime(beforeTime+time);
                  dates.add(date);
               } else if (str.contains("：")) {
                  String[] strings2 = str.split("：");
                  Integer hour = Integer.parseInt(strings2[0]);
                  Integer min = Integer.parseInt(strings2[1]);
                  long time = 1000 * 60 * 60 * hour + 1000 * 60 * min;
                  Date date=new Date();
                  dates.add(date);
               }
            }
         }
      
      }
      
      return dates;
   }
   
   /**
    * date 轉 String
    * @param date
    * @return
    */
   public static String dateToString(Date date){
      SimpleDateFormat sdf = new SimpleDateFormat(PATTERN_DATE);
      return sdf.format(date);
   }
   public static String dateToStringYMDHMS(Date date){
      SimpleDateFormat sdf = new SimpleDateFormat(PATTERN_STANDARD);
      return sdf.format(date);
   }

   public static String dateToStringYMDHM(Date date){
      SimpleDateFormat sdf = new SimpleDateFormat(PATTERN_DATE + " " +PARRERN_Hour_Minute);
      return sdf.format(date);
   }

   public static Date stringToDateYMDHMS(String str) throws ParseException {
      SimpleDateFormat sdf = new SimpleDateFormat(PATTERN_STANDARD);
      return sdf.parse(str);
   }
   public static Date stringToDateYMD(String str) throws ParseException {
      SimpleDateFormat sdf = new SimpleDateFormat(PATTERN_DATE);
      return sdf.parse(str);
   }

   /**
    * CTS轉UTC時間（加8小時）
    * @param date
    * @return
    */
   public static Date CTSToUTC(Date date){
      //8小時誤差修正
      long l=28800000L;
      date.setTime(date.getTime()+l);
      return date;
   }

   public static boolean isDateString(String datevalue, String dateFormat) {
      if (StringUtils.isEmpty(datevalue) || StringUtils.isEmpty(dateFormat)) {
         return false;
      }
      try {
         SimpleDateFormat fmt = new SimpleDateFormat(dateFormat);
         java.util.Date dd = fmt.parse(datevalue);
         if (datevalue.equals(fmt.format(dd))) {
            return true;
         } else {
            return false;
         }
      } catch (Exception e) {
         return false;
      }
   }


   public static int compare_date(String DATE1, String DATE2) {
      SimpleDateFormat df = new SimpleDateFormat(PATTERN_STANDARD);
      try {
         Date dt1 = df.parse(DATE1);
         Date dt2 = df.parse(DATE2);
         if (dt1.getTime() > dt2.getTime()) {
//          System.out.println("dt1 在dt2前");
            return 1;
         } else if (dt1.getTime() < dt2.getTime()) {
//          System.out.println("dt1在dt2後");
            return -1;
         } else {
            return 0;
         }
      } catch (Exception exception) {
         exception.printStackTrace();
      }
      return 0;
   }

   public static int compare_date(String DATE1, String DATE2,String foramt) {
      SimpleDateFormat df = new SimpleDateFormat(foramt);
      try {
         Date dt1 = df.parse(DATE1);
         Date dt2 = df.parse(DATE2);
         if (dt1.getTime() > dt2.getTime()) {
//          System.out.println("dt1 在dt2前");
            return 1;
         } else if (dt1.getTime() < dt2.getTime()) {
//          System.out.println("dt1在dt2後");
            return -1;
         } else {
            return 0;
         }
      } catch (Exception exception) {
         exception.printStackTrace();
      }
      return 0;
   }

   public static String getYesterday(){
      SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
      Date date=new Date();
      Calendar calendar = Calendar.getInstance();
      calendar.setTime(date);
      calendar.add(Calendar.DAY_OF_MONTH, -1);
      date = calendar.getTime();
      return sdf.format(date);
   }

}

控制器調用：

@Controller
@RequestMapping(value = "${adminPath}/oss")
public class OSSController {

    @Autowired
    private OSSClientUtil ossClientUtil;

//這個是上傳後直接獲取外網連接地址的，個人覺得還是很方便的
    @RequestMapping("uploadImg1")
    @ResponseBody
    public String uploadImg1(@RequestParam(value = "file", required = false) MultipartFile imgFile) throws IOException {
        OSS ossClient = ossClientUtil.getOssClient();
        String name = ossClientUtil.uploadImg2Oss(imgFile,ossClient);
        String imgUrl = ossClientUtil.getImgUrl(name,ossClient);
        ossClientUtil.destory(ossClient);
        return imgUrl;
    }

}