<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_IDprivate 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.pngurl = "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);}
}