SpringBoot之阿里云OSS上传头像

1.创建阿里云OSS许可证，得到AccessKey Secret

2.新建maven项目导入依赖

     <!-- 阿里云oss依赖 -->
        <dependency>
            <groupId>com.aliyun.oss</groupId>
            <artifactId>aliyun-sdk-oss</artifactId>
        </dependency>
        <!-- 日期工具栏依赖 -->
        <dependency>
            <groupId>joda-time</groupId>
            <artifactId>joda-time</artifactId>
        </dependency>

3.编写配置文件

#服务端口
server.port=8002
#服务名
spring.application.name=service-oss
#环境设置：dev、test、prod
spring.profiles.active=dev
#阿里云 OSS
#不同的服务器，地址不同
aliyun.oss.file.endpoint=your endpoint
aliyun.oss.file.keyid=your accessKeyId
aliyun.oss.file.keysecret=your accessKeySecret
#bucket可以在控制台创建，也可以使用java代码创建
aliyun.oss.file.bucketname=violet-imgs

4.测试启动报错，在启动类添加内容

这是因为启动的时候找数据库配置，但是这个模块不需要操作数据库，只是做上传到OSS功能，没有配置数据库

5.创建常量类ConstantPropertiesUtils继承InitializingBean

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

//当项目已启动，spring接口，spring加载后，执行接口一个方法
@Component
public class ConstantPropertiesUtils implements InitializingBean {

    //读取配置文件内容
    @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_POINT;
    public static String ACCESS_KEY_ID;
    public static String ACCESS_KEY_SECRET;
    public static String BUCKET_NAME;

    @Override
    public void afterPropertiesSet() throws Exception {
        END_POINT = endpoint;
        ACCESS_KEY_ID = keyId;
        ACCESS_KEY_SECRET = keySecret;
        BUCKET_NAME = bucketName;

    }

}

6.service层OssServiceImpl

import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.mine.guli.service.OssService;
import com.mine.guli.utils.ConstantPropertiesUtils;
import org.joda.time.DateTime;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;
import java.io.InputStream;
import java.util.Date;
import java.util.UUID;

@Service
public class OssServiceImpl implements OssService {

    @Override
    public String uploadFileAvatar(MultipartFile file) {
        //获取阿里云存储相关常量
        String endPoint = ConstantPropertiesUtils.END_POINT;
        String accessKeyId = ConstantPropertiesUtils.ACCESS_KEY_ID;
        String accessKeySecret = ConstantPropertiesUtils.ACCESS_KEY_SECRET;
        String bucketName = ConstantPropertiesUtils.BUCKET_NAME;

        try{
            //判断oss实例是否存在：如果不存在则创建，如果存在则获取
            OSS ossClient = new OSSClientBuilder().build(endPoint,accessKeyId,accessKeySecret);

            //获取上传文件流
            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().replace("-","");
            fileName = uuid+fileName;

            // 2把文件按照日期进行分类
            // 获取当前日期
            String datePath = new DateTime().toString("yyyy/MM/dd");
            fileName=datePath+"/"+fileName;

            //调用oss方法实现上传
            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路径手动拼接起来
            //  https://violet-imgs.oss-cn-beijing.aliyuncs.com/1.jpg
            String url = "https://"+bucketName+"."+endPoint+'/'+fileName;
            return url;

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

}

7.controller层

import com.mine.guli.commonutils.R;
import com.mine.guli.service.OssService;
import io.swagger.annotations.Api;
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;


@Api(description="阿里云文件管理")
@CrossOrigin //跨域
@RestController
@RequestMapping("/eduoss/fileoss")
public class OssController {

    @Autowired
    private OssService ossService;

    @PostMapping("/upload")
    public R uploadOssFile(MultipartFile file){
        String url = ossService.uploadFileAvatar(file);
        return R.ok().data("url",url);
    }

}