文件上传和OSS上传至阿里云

小鱼儿 2023-10-03 20:38 29阅读 0赞

上传文件至本地 上传至阿里云在下面

简单实现上传文件（注意事项 ------ 只能post请求,不是上传至阿里云）

//Controller
    	@PostMapping("/upload/file")
        @ResponseBody
        public String upload(@RequestParam("file") MultipartFile multipartFile,HttpServletRequest request){
            if (multipartFile.isEmpty()){
                return "文件为空";
            }
            String dir = request.getParameter("dir");
            return uploadService.uploadFile(multipartFile,dir);
        }
    	
        /**
         * MultipartFile 是SpringMVC提供的文件上传接受类
         * 它的底层会自动的 和HttpServletRequest request中的request.getInputStream()融合
         * 从而达到文件上传的效果
         * 从而得知文件上传的底层基于request.getInputStream()
         * @param multipartFile
         * @param dir
         * @return
         */
        public String uploadFile(MultipartFile multipartFile,String dir){
            File targetFile = new File("E://谷歌/IOFiles/" + dir);
            try {
                if (!targetFile.exists())targetFile.mkdirs();
                File filename = new File(targetFile,"aaa.png");
                multipartFile.transferTo(filename);
                return "上传成功";
            } catch (IOException e) {
                e.printStackTrace();
                return "file";
            }
        }

application.yml配置

servlet:
        multipart:
          enabled: true
          #单个文件大小
          max-request-size: 10MB
          #临时文件存储路径
          location: F://data/temp----------
          #文件达到多少时存入磁盘
          file-size-threshold: 20MB

前端

//html
        <form action="/upload/file" enctype="multipart/form-data" method="post">
            <input type="hidden" name="dir" value="images">
            <input type="file" name="file">
            <input type="submit" value="submit">
        </form>

！！！！！！！！！！！！！！！上传文件至阿里云！！！！！！！！！！！！！！！！！

首先引入SDK依赖

<dependency>
        <groupId>com.aliyun.oss</groupId>
        <artifactId>aliyun-sdk-oss</artifactId>
        <version>3.15.0</version>
    </dependency>

JDK9之后的还需引入下面两个（JDK9）

<dependency>
        <groupId>javax.xml.bind</groupId>
        <artifactId>jaxb-api</artifactId>
        <version>2.3.1</version>
    </dependency>
    <dependency>
        <groupId>javax.activation</groupId>
        <artifactId>activation</artifactId>
        <version>1.1.1</version>
    </dependency>
    
    <dependency>
        <groupId>org.glassfish.jaxb</groupId>
        <artifactId>jaxb-runtime</artifactId>
        <version>2.3.3</version>
    </dependency>

具体代码可参考阿里云的[ API文档][API]

![166732e0b9fb477a8eb7ba2f4c4fb40d.png][]

下面是我的参数 改为自己的参数就ok

//例子
    public String uploadOss(MultipartFile multipartFile){
            // Endpoint以华东1（杭州）为例，其它Region请按实际情况填写。
            String endpoint = "oss-cn-beijing.aliyuncs.com";
            // 阿里云账号AccessKey拥有所有API的访问权限，风险很高。强烈建议您创建并使用RAM用户进行API访问或日常运维，请登录RAM控制台创建RAM用户。
            String accessKeyId = "LTAI5t922WrhhUZePmVupF3B";
            String accessKeySecret = "LRn312316rjdhdn5BPNejsQT";
            // 填写Bucket名称，例如examplebucket。
            String bucketName = "1bucket";
            // 填写Object完整路径，例如exampledir/exampleobject.txt。Object完整路径中不能包含Bucket名称。
            // 创建OSSClient实例。
            OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
            try {
                //2.获取文件上传流
                InputStream inputStream = multipartFile.getInputStream();
    //            InputStream inputStream = new FileInputStream(multipartFile);
                //3.构建日期目录
                String datePath = new SimpleDateFormat("yyyy/MM/dd").format(new Date());
                //4.获取文件名称
                String orginName = multipartFile.getOriginalFilename();
    //            String orginName = multipartFile.getName();
                String filename = UUID.randomUUID().toString();
                String suffix = orginName.substring(orginName.lastIndexOf("."));
                String newName = filename + suffix;
                String fileUrl = datePath+"/"+newName;
                //文件上传到阿里云
                ossClient.putObject(bucketName, fileUrl,inputStream);
                return "https://"+bucketName+"."+endpoint+"/"+fileUrl;
            } 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 (Exception 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());
                return "fail";
            } finally {
                if (ossClient != null) {
                    ossClient.shutdown();
                }
            }
            return "success";
        }

[API]: https://help.aliyun.com/document_detail/32011.html
[166732e0b9fb477a8eb7ba2f4c4fb40d.png]: https://img-blog.csdnimg.cn/166732e0b9fb477a8eb7ba2f4c4fb40d.png