OSS文件上传

1.在application.yml核心配置文件中添加

spring:
  profiles:
    active: dev 

sky:
  alioss:
    endpoint: ${sky.alioss.endpoint}
    access-key-id: ${sky.alioss.access-key-id}
    access-key-secret: ${sky.alioss.access-key-secret}
    bucket-name: ${sky.alioss.bucket-name}

2.在application-dev.yml开发者配置文件中添加

# 阿里云OSS
  alioss:
    endpoint: oss-accelerate.aliyuncs.com # oss全球加速域名
    bucket-name: tangguangyu # 存储空间名称
    access-key-id: LTAI5tSp9arZfkrg6dnyv9Hw # 访问密钥ID
    access-key-secret: 5guoa94EJ8788ld7W5TQSMJYXNYFA1 # 访问密钥Secret

3.创建AliOssProperties 用于读取配置

package com.sky.properties;

import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

@Component
@ConfigurationProperties(prefix = "sky.alioss")// 绑定配置文件中的sky.alioss.*
@Data
public class AliOssProperties {
    private String endpoint;
    private String accessKeyId;
    private String accessKeySecret;
    private String bucketName;

}

4.将 AliOssProperties 读取并注入到spring容器之中

package com.sky.config;

import com.sky.properties.AliOssProperties;
import com.sky.utils.AliOssUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * 阿里云文件上传配置
 * 用于创建 AliOssUtil 对象
 */
@Configuration
@Slf4j
public class OssConfiguration {

    @Bean
    @ConditionalOnMissingBean  //当容器中没有这个bean对象时，才创建这个对象
    public AliOssUtil aliOssUtil(AliOssProperties aliOssProperties){
        log.info("开始创建阿里云文件上传工具类对象：{}",aliOssProperties);
        return new AliOssUtil(
                aliOssProperties.getEndpoint(),
                aliOssProperties.getAccessKeyId(),
                aliOssProperties.getAccessKeySecret(),
                aliOssProperties.getBucketName());
    }
}

5.创建阿里云工具类用于上传文件并返回文件名称

package com.sky.utils;

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;

import java.io.ByteArrayInputStream;

@Data
@AllArgsConstructor
@Slf4j
public class AliOssUtil {
    private String endpoint;
    private String accessKeyId;
    private String accessKeySecret;
    private String bucketName;

    /**
     * 文件上传
     *
     * @param bytes
     * @param objectName
     * @return
     */
    public String upload(byte[] bytes, String objectName) {

        // 创建OSSClient实例。
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

        try {
            // 创建PutObject请求。
            ossClient.putObject(bucketName, objectName, new ByteArrayInputStream(bytes));
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }

        //文件访问路径规则 https://BucketName.Endpoint/ObjectName
        StringBuilder stringBuilder = new StringBuilder("https://");
        stringBuilder
                .append(bucketName)
                .append(".")
                .append(endpoint)
                .append("/")
                .append(objectName);

        log.info("文件上传到:{}", stringBuilder.toString());

        return stringBuilder.toString();
    }
}

6.使用上传

 @Autowired
    private AliOssUtil aliOssUtil;
    @PostMapping("/upload")
    @ApiOperation("文件上传")
    public Result<String> upload(MultipartFile file) {
        log.info("文件上传:{}", file);
        try {
            //原始文件名
            String originalFilename = file.getOriginalFilename();
            log.info("原始文件名:{}", originalFilename);
            //截取原文件名称
            String extension = originalFilename.substring(originalFilename.lastIndexOf("."));
            log.info("原文件名称:{}", extension);
            //生成UUID为新文件名称
            String objectName = UUID.randomUUID().toString() + extension;
            //上传到阿里云并返回文件访问路径
            String fullPath = aliOssUtil.upload(file.getBytes(), objectName);
            return Result.success(fullPath);
        } catch (IOException e) {
            log.error("文件上传失败:{}", e);
        }
        return Result.error("上传失败");
    }