上传文件-给文件起随机名

七牛云文件上传

  @RequestMapping("/upload")
    public Result upload(MultipartFile imgFile) {
        try {
            //获取原始文件名
            String originalFilename = imgFile.getOriginalFilename();
            // 找到.最后出现的位置
            int lastIndexOf = originalFilename.lastIndexOf(".");
            //获取文件后缀
            String suffix = originalFilename.substring(lastIndexOf);
            //使用UUID随机产生文件名称，防止同名文件覆盖
            String fileName = UUID.randomUUID().toString() + suffix;
            QiniuUtils.upload2Qiniu(imgFile.getBytes(),fileName);
            //图片上传成功
            Result result = new Result(true, MessageConstant.PIC_UPLOAD_SUCCESS, fileName);
            return result;
        } catch (IOException e) {
            e.printStackTrace();
        }
        return new Result(false,MessageConstant.PIC_UPLOAD_FAIL);
    }

七牛云工具类

package com.atguigu.utils;

import com.google.gson.Gson;
import com.qiniu.common.QiniuException;
import com.qiniu.common.Zone;
import com.qiniu.http.Response;
import com.qiniu.storage.BucketManager;
import com.qiniu.storage.Configuration;
import com.qiniu.storage.UploadManager;
import com.qiniu.storage.model.DefaultPutRet;
import com.qiniu.util.Auth;
import org.junit.Test;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;

/**
 * 七牛云工具类
 */
public class QiniuUtils {

    public  static String accessKey = "BrrMVEQCE6ijrnHX-gGDVVk3e0vY8mAQQEyB_Zzq";
    public  static String secretKey = "uaJNMOUGSkZqb3xce-gv4Y-2f0f5_X5VQO-v4lL0";
    public  static String bucket = "meinian888";

    public static void upload2Qiniu(String filePath,String fileName){
        //构造一个带指定Zone对象的配置类
        Configuration cfg = new Configuration(Zone.zone2());
        UploadManager uploadManager = new UploadManager(cfg);
        Auth auth = Auth.create(accessKey, secretKey);
        String upToken = auth.uploadToken(bucket);
        try {
            Response response = uploadManager.put(filePath, fileName, upToken);
            //解析上传成功的结果
            DefaultPutRet putRet = new Gson().fromJson(response.bodyString(), DefaultPutRet.class);
        } catch (QiniuException ex) {
            Response r = ex.response;
            try {
                System.err.println(r.bodyString());
            } catch (QiniuException ex2) {
                //ignore
            }
        }
    }

    //上传文件
    public static void upload2Qiniu(byte[] bytes, String fileName){
        //构造一个带指定Zone对象的配置类
        Configuration cfg = new Configuration(Zone.zone2());
        //...其他参数参考类注释
        UploadManager uploadManager = new UploadManager(cfg);

        //默认不指定key的情况下，以文件内容的hash值作为文件名
        String key = fileName;
        Auth auth = Auth.create(accessKey, secretKey);
        String upToken = auth.uploadToken(bucket);
        try {
            Response response = uploadManager.put(bytes, key, upToken);
            //解析上传成功的结果
            DefaultPutRet putRet = new Gson().fromJson(response.bodyString(), DefaultPutRet.class);
            System.out.println(putRet.key);
            System.out.println(putRet.hash);
        } catch (QiniuException ex) {
            Response r = ex.response;
            System.err.println(r.toString());
            try {
                System.err.println(r.bodyString());
            } catch (QiniuException ex2) {
                //ignore
            }
        }
    }

    //删除文件
    public static void deleteFileFromQiniu(String fileName){
        //构造一个带指定Zone对象的配置类
        Configuration cfg = new Configuration(Zone.zone2());
        String key = fileName;
        Auth auth = Auth.create(accessKey, secretKey);
        BucketManager bucketManager = new BucketManager(auth, cfg);
        try {
            bucketManager.delete(bucket, key);
        } catch (QiniuException ex) {
            //如果遇到异常，说明删除失败
            System.err.println(ex.code());
            System.err.println(ex.response.toString());
        }
    }
}