【SpringBoot】文件上传到阿里云

  <form action="/upload" method="post" enctype="multipart/form-data">
    头像：<input type="file" name="image">
    <input type="submit" value="提交">
  </form>

package com.heo.utils;

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.PutObjectRequest;
import com.aliyun.oss.model.PutObjectResult;

import java.io.FileInputStream;
import java.io.InputStream;

public class AliOssUtil {
    // Endpoint以华东1（杭州）为例，其它Region请按实际情况填写。
    private static final String ENDPOINT = "https://oss-cn-beijing.aliyuncs.com";
    // 从环境变量中获取访问凭证。运行本代码示例之前，请确保已设置环境变量OSS_ACCESS_KEY_ID和OSS_ACCESS_KEY_SECRET。
    //EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
    private static final String ACCESS_KEY_ID = "xxxxx";  // 替换成自己的ACCESS_KEY_ID
    private static final String ACCESS_KEY_SECRET = "xxxxx";  // 替换成自己的ACCESS_KEY_SECRET
    // 填写Bucket名称，例如examplebucket。
    private static final String BUCKET_NAME = "heoleadnews";

    public static String uploadFile(String objectName, InputStream in) throws Exception {
        // 创建OSSClient实例。
        OSS ossClient = new OSSClientBuilder().build(ENDPOINT, ACCESS_KEY_ID, ACCESS_KEY_SECRET);
        String url = "";
        try {
            // 填写字符串。
            String content = "Hello OSS，你好世界";

            // 创建PutObjectRequest对象。
            PutObjectRequest putObjectRequest = new PutObjectRequest(BUCKET_NAME, objectName, in);

            // 如果需要上传时设置存储类型和访问权限，请参考以下示例代码。
            // ObjectMetadata metadata = new ObjectMetadata();
            // metadata.setHeader(OSSHeaders.OSS_STORAGE_CLASS, StorageClass.Standard.toString());
            // metadata.setObjectAcl(CannedAccessControlList.Private);
            // putObjectRequest.setMetadata(metadata);

            // 上传字符串。
            PutObjectResult result = ossClient.putObject(putObjectRequest);
            // 例： https://heoleadnews.oss-cn-beijing.aliyuncs.com/001.png
            url = "https://" + BUCKET_NAME + "." + ENDPOINT.substring(ENDPOINT.lastIndexOf("/") + 1) + "/" + objectName;
        } 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();
            }
        }

        return url;
    }
}

package com.heo.controller;


import com.heo.pojo.Result;
import com.heo.utils.AliOssUtil;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
import java.util.UUID;

@RestController
public class FileUploadController {
    @PostMapping("/upload")
    public Result<String> upload(MultipartFile file) throws Exception {
        String originalFilename = file.getOriginalFilename();
        String filename = UUID.randomUUID().toString() + originalFilename.substring(originalFilename.lastIndexOf("."));
//        file.transferTo(new File("C:\\Users\\86139\\Desktop\\Java\\springboot3+vue3（黑马）\\FileUpload\\"+filename));
        String url = AliOssUtil.uploadFile(filename, file.getInputStream());
        return Result.success(url);
    }
}