1.开启阿里云OSS服务
1.开启服务
登录阿里云官网

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开启对象存储服务后(按流量计费),进入对象存储控制台

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创建规则

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bucket:gulimall-oss123
endpoint:oss-cn-hangzhou.aliyuncs.com
url:gulimall-oss123.oss-cn-hangzhou.aliyuncs.com
AccessKey ID:LTAI5tS2xGi7WUz7GbaVnK2z
AccessKey Secret:l5VQHnGdmNLXXPyDTGinhWN8SSMYEU

添加阿里云依赖

        <dependency>
            <groupId>com.aliyun.oss</groupId>
            <artifactId>aliyun-sdk-oss</artifactId>
            <version>3.15.1</version>
        </dependency>

配置添加

#阿里云 OSS
#不同的服务器，地址不同
aliyun.oss.endpoint=oss-cn-hangzhou.aliyuncs.com
aliyun.oss.accessKeyId=LTAI5tS2xGi7WUz7GbaVnK2z
aliyun.oss.secret=l5VQHnGdmNLXXPyDTGinhWN8SSMYEU
#bucket可以在控制台创建，也可以使用java代码创建
aliyun.oss.bucket=gulimall-oss123

ConstantOssPropertiesUtils

package com.atguigu.gulimall.mytest.utils;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component
public class ConstantOssPropertiesUtils implements InitializingBean {

    @Value("${aliyun.oss.endpoint}")
    private String endpoint;

    @Value("${aliyun.oss.accessKeyId}")
    private String accessKeyId;

    @Value("${aliyun.oss.secret}")
    private String secret;

    @Value("${aliyun.oss.bucket}")
    private String bucket;

    public static String EDNPOINT;
    public static String ACCESS_KEY_ID;
    public static String SECRECT;
    public static String BUCKET;

    @Override
    public void afterPropertiesSet() throws Exception {
        EDNPOINT=endpoint;
        ACCESS_KEY_ID=accessKeyId;
        SECRECT=secret;
        BUCKET=bucket;
    }
}

服务调用

import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.time.LocalDateTime;
import java.time.ZoneOffset;
import java.time.format.DateTimeFormatter;

/**
 * oss上传service
 */
@Service
public class OSSFileService {
    private static final String BUCKET_PRE = "order_import";

    public String upload(MultipartFile file) {
        // Endpoint以杭州为例，其它Region请按实际情况填写。
        String endpoint = ConstantOssPropertiesUtils.EDNPOINT;
        String accessKeyId = ConstantOssPropertiesUtils.ACCESS_KEY_ID;
        String accessKeySecret = ConstantOssPropertiesUtils.SECRECT;
        String bucketName = ConstantOssPropertiesUtils.BUCKET;
        try {
            // 创建OSSClient实例。
            OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
            // 上传文件流。
            InputStream inputStream = file.getInputStream();
            String fileName = file.getOriginalFilename();
            DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyyMMddHHmmssSSS");
            String timeUrl = LocalDateTime.now(ZoneOffset.of("+8")).format(formatter);
            fileName = BUCKET_PRE + "/" + fileName + timeUrl;
            //调用方法实现上传
            ossClient.putObject(bucketName, fileName, inputStream);
            // 关闭OSSClient。
            ossClient.shutdown();
            //上传之后文件路径
            String url = "https://" + bucketName + "." + endpoint + "/" + fileName;
            //返回
            return url;
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }
    }


    public String upload(ByteArrayOutputStream outputStream, String originalFilename) {
        // Endpoint以杭州为例，其它Region请按实际情况填写。
        String endpoint = ConstantOssPropertiesUtils.EDNPOINT;
        String accessKeyId = ConstantOssPropertiesUtils.ACCESS_KEY_ID;
        String accessKeySecret = ConstantOssPropertiesUtils.SECRECT;
        String bucketName = ConstantOssPropertiesUtils.BUCKET;
        // 创建OSSClient实例。
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
        // 上传文件流。
        ByteArrayInputStream inputStream = new ByteArrayInputStream(outputStream.toByteArray());

        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyyMMddHHmmssSSS");
        String timeUrl = LocalDateTime.now(ZoneOffset.of("+8")).format(formatter);
        String fileName = BUCKET_PRE + "/" + timeUrl + originalFilename;
        //调用方法实现上传
        ossClient.putObject(bucketName, fileName, inputStream);
        // 关闭OSSClient。
        ossClient.shutdown();
        //上传之后文件路径
        return "https://" + bucketName + "." + endpoint + "/" + fileName;
    }
}