如何使用Spring Boot在Java中测试dropbox上传？

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>

@RestController
public class UploadController {

    @PostMapping("/upload")
    public String uploadFile(@RequestParam("file") MultipartFile file) {
        // 处理上传文件的逻辑
        return "File uploaded successfully!";
    }
}

dropbox.access-token=YOUR_ACCESS_TOKEN

@RestController
public class UploadController {

    @Value("${dropbox.access-token}")
    private String accessToken;

    @PostMapping("/upload")
    public String uploadFile(@RequestParam("file") MultipartFile file) {
        try {
            DbxRequestConfig config = DbxRequestConfig.newBuilder("dropbox/java-tutorial").build();
            DbxClientV2 client = new DbxClientV2(config, accessToken);
            
            // 上传文件
            try (InputStream inputStream = file.getInputStream()) {
                client.files().uploadBuilder("/" + file.getOriginalFilename())
                        .uploadAndFinish(inputStream);
            }
            
            return "File uploaded successfully!";
        } catch (IOException | DbxException e) {
            e.printStackTrace();
            return "File upload failed!";
        }
    }
}