基于springboot+阿里云存储对象OSS详解

先在阿里云AccessKey 管理中获取用户的AccessKey ID和AccessKey Secret
创建Bucket空间

安装阿里云对象存储oss依赖包

         <!--阿里云oss-->
        <dependency>
            <groupId>com.aliyun.oss</groupId>
            <artifactId>aliyun-sdk-oss</artifactId>
            <version>3.10.2</version>
        </dependency>

在application.yml配置文件中配置参数（我使用的是.yml文件格式）

在ConstantPropertiesUtil中获取配置文件参数

package 包路径;


import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.PropertySource;
import org.springframework.stereotype.Component;


/**
 * 阿里云对象存储信息
 */
@Component
@PropertySource("classpath:application.yml")
public class ConstantPropertiesUtil implements InitializingBean {
  @Value("${aliyun.oss.file.endpoint}")
  private String endpoint;
  @Value("${aliyun.oss.file.keyid}")
  private String keyId;
  @Value("${aliyun.oss.file.keysecret}")
  private String keysecret;
  @Value("${aliyun.oss.file.bucketname}")
  private String bucketname;

  //定义公开静态常量
  public static String END_POIND;
  public static String ACCESS_KEY_ID;
  public static String ACCESS_KEY_SECRET;
  public static String BUCKET_NAME;

  @Override
  public void afterPropertiesSet() throws Exception {
    END_POIND = endpoint;
    ACCESS_KEY_ID = keyId;
    ACCESS_KEY_SECRET = keysecret;
    BUCKET_NAME = bucketname;
  }
}

创建相应的service接口和实现类

package 包路径;

import org.springframework.web.multipart.MultipartFile;

public interface OssService {
  //上传头像图片到oss
  String uploadFileAvatar(MultipartFile file);
}

实现类：

package 包路径;

import com.rwlok.service.OssService;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;

import com.rwlok.utils.ConstantPropertiesUtil;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.InputStream;
import java.util.UUID;

@Service
public class OssServiceImpl implements OssService {


  //上传头像
  @Override
  public String uploadFileAvatar(MultipartFile file) {
  // 工具类获取值
    String endpoint = ConstantPropertiesUtil.END_POIND;
    String accessKeyId = ConstantPropertiesUtil.ACCESS_KEY_ID;
    String accessKeySecret = ConstantPropertiesUtil.ACCESS_KEY_SECRET;
    String bucketName = ConstantPropertiesUtil.BUCKET_NAME;
    String catalogue = "avatar";//目录
    try {
      // 创建OSS实例。
      OSS ossClient = new OSSClientBuilder().build(endpoint,accessKeyId,accessKeySecret);

      //获取上传文件输入流
      InputStream inputStream = file.getInputStream();
      //获取文件名称
      String fileName = file.getOriginalFilename();

      //1 在文件名称里面添加随机唯一的值
      String uuid = UUID.randomUUID().toString().replaceAll("-","");
      // yuy76t5rew01.jpg
      fileName = uuid+fileName;

      //拼接
      //  2019/11/12/ewtqr313401.jpg
      fileName = catalogue+"/"+fileName;

      //调用oss方法实现上传
      //第一个参数  Bucket名称
      //第二个参数  上传到oss文件路径和文件名称   aa/bb/1.jpg
      //第三个参数  上传文件输入流
      ossClient.putObject(bucketName,fileName , inputStream);

      // 关闭OSSClient。
      ossClient.shutdown();

      //把上传之后文件路径返回
      //需要把上传到阿里云oss路径手动拼接出来
      //  https://edu-guli-1010.oss-cn-beijing.aliyuncs.com/01.jpg
      String url = "https://"+bucketName+"."+endpoint+"/"+fileName;
      return url;
    }catch(Exception e) {
      e.printStackTrace();
      return null;
    }
  }

}

在控制类中调用实现类中的方法

import com.rwlok.service.OssService;
import com.rwlok.utils.ErrorCode;
import com.rwlok.utils.Result;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

@RestController
@RequestMapping("/uploadfileoss")
@Api(tags = "上传图片")
@CrossOrigin
public class OssController {

  @Autowired
  private OssService ossService;

  //上传头像的方法
  @PostMapping("/avatar")
  @ApiOperation(value = "上传头像")
  public Result uploadAvatarOssFile(MultipartFile file) {
    //获取上传文件  MultipartFile
    //返回上传到oss的路径
    String url = ossService.uploadFileAvatar(file);
    if (StringUtils.isBlank(url)){
      return Result.error(ErrorCode.UPLOADIND_ERROR.getCode(), ErrorCode.UPLOADIND_ERROR.getMsg());
    }
    return Result.success(url);
  }
}

启动项目，查看结果

基于springboot+阿里云存储对象OSS详解

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