阿里云OSS文件上传实战-优快云博客

本文链接：https://blog.youkuaiyun.com/qq_34139393/article/details/125122475

本文详细介绍了如何在项目中实现将文件上传至阿里云的对象存储服务（OSS）。首先，介绍了需要引入的依赖，然后逐步讲解了在Controller和Service层如何编写代码来完成文件的上传操作。

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引入相关依赖

<!-- https://mvnrepository.com/artifact/com.aliyun.oss/aliyun-sdk-oss -->
<dependency>
    <groupId>com.aliyun.oss</groupId>
    <artifactId>aliyun-sdk-oss</artifactId>
    <version>2.8.3</version>
</dependency>

<!-- https://mvnrepository.com/artifact/joda-time/joda-time -->
<dependency>
    <groupId>joda-time</groupId>
    <artifactId>joda-time</artifactId>
    <version>2.10.10</version>
</dependency>

上传实现

controller

/**
 * 文件上传
 */
@PostMapping("upload")
public R upload(@RequestParam("file") MultipartFile file) {
    String uploadUrl = fileService.upload(file);
    return R.ok().put("url", uploadUrl);
}

service

public String upload(MultipartFile file) {
    //阿里云存储相关常量
    String endPoint = ;
    String accessKeyId = ;
    String accessKeySecret = ;
    String bucketName = ;
    String fileHost = ;
    String uploadUrl = ;
    try {
        OSSClient ossClient = new OSSClient(endPoint, accessKeyId, accessKeySecret);
        if (!ossClient.doesBucketExist(bucketName)) {
            ossClient.createBucket(bucketName);
            ossClient.setBucketAcl(bucketName, CannedAccessControlList.PublicRead);
        }
        InputStream inputStream = file.getInputStream();
        String filePath = new DateTime().toString("yyyy/MM/dd");
        String original = file.getOriginalFilename();
        String fileName = UUID.randomUUID().toString();
        String fileType = original.substring(original.lastIndexOf("."));
        String newName = fileName + fileType;
        String fileUrl = fileHost + "/" + filePath + "/" + newName;
        ossClient.putObject(bucketName, fileUrl, inputStream);
        ossClient.shutdown();
        uploadUrl = "http://" + bucketName + "." + endPoint + "/" + fileUrl;
    }catch (Exception e){
        return null;
    }
    return uploadUrl;
}

上传文件到阿里云OSS