我在spring Boot 中开发了一个产品注册API，在post方法中，我通过multipart/form-data发送了一个图像上传，沿着一个带有产品dto的json。

@RestController
@CrossOrigin(origins = "*", maxAge = 3600)
@RequestMapping("/product")
public class ProductController {
    final ProductService productService;
    final CategoryService categoryService;
    final ProductMapper productMapper;
    final S3Client s3Client;

    private final String BUCKET_NAME = "awstockproducts" + System.currentTimeMillis();

    public ProductController(ProductService productService, ProductMapper productMapper, CategoryService categoryService, S3Client s3Client) {
        this.productService = productService;
        this.productMapper = productMapper;
        this.categoryService = categoryService;
        this.s3Client = s3Client;
    }
    @PostMapping(value = "/", consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
    public ResponseEntity<Object> saveProduct (@RequestParam("productDto") String jsonString, @RequestParam("file")MultipartFile file) {
        try {
            ObjectMapper objectMapper = new ObjectMapper();
            ProductDto productDto = objectMapper.readValue(jsonString, ProductDto.class);

            if (productService.existsByProduct(productDto.getProduct())) {
                return ResponseEntity.status(HttpStatus.CONFLICT).body("Product already exists!");
            }
            ProductModel productModel = productMapper.toProductModel(productDto);
            CategoryModel categoryModel = categoryService.findById(productDto.getProductCategory().getCategory_id())
                    .orElseThrow(() -> new RuntimeException("Category not found"));
            productModel.setProductCategory(categoryModel);

            String fileName = "/products/images/" + UUID.randomUUID().toString() + "-" + file.getOriginalFilename();

            s3Client.putObject(PutObjectRequest
                            .builder()
                            .bucket(BUCKET_NAME)
                            .key(fileName)
                            .build(),
                        software.amazon.awssdk.core.sync.RequestBody.fromString("Testing java sdk"));
            return ResponseEntity.status(HttpStatus.CREATED).body(productService.save(productModel));
        } catch (Exception e) {
            return ResponseEntity.status(HttpStatus.CONFLICT).body(e);
        }
    }

问题是我在向 Postman 提出请求时遇到了问题

"localizedMessage": "The specified bucket does not exist (Service: S3, Status Code: 404, Request ID: ZZ27F9CNNTG2RTPR, Extended Request ID:

尽管有这样的消息，但检查amazonaws时我可以看到我的bucket确实存在，并且与我在应用程序中配置的bucket具有相同的名称。

package com.api.business_manager_api.Config;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import software.amazon.awssdk.auth.credentials.AwsBasicCredentials;
import software.amazon.awssdk.auth.credentials.StaticCredentialsProvider;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.s3.S3Client;

@Configuration
public class AmazonConfig {
    private final String AWS_REGION = "us-east-1";
    private final String BUCKET_NAME = "productstockimages";

    @Value("${aws.accessKeyId}")
    private String accessKeyId;

    @Value("${aws.secretAccessKey}")
    private String secretAccessKey;

    @Bean
    public S3Client s3Client() {
        AwsBasicCredentials awsCreds = AwsBasicCredentials.create(accessKeyId, secretAccessKey);
        return S3Client.builder()
                .region(Region.of(AWS_REGION))
                .credentialsProvider(StaticCredentialsProvider.create(awsCreds))
                .build();
    }
}

在secretKey和AccessKey中，我使用amazonaws控制台中的授权IAM用户的密钥配置了inproperties。