springboot上传文件接口

你可以使用Spring Boot来创建一个文件上传的接口。下面是一个示例代码：

首先，需要添加以下依赖到你的pom.xml文件中：

<dependencies>
    <!-- 其他依赖 -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
</dependencies>

然后创建一个Controller类，处理上传文件的请求：

import org.springframework.beans.factory.annotation.Value;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import java.io.File;
import java.io.IOException;

@RestController
public class FileUploadController {

    @Value("${upload-dir}")
    private String uploadDir;

    @PostMapping("/upload")
    public ResponseEntity<String> uploadFile(@RequestParam("file") MultipartFile file) {
        if (file.isEmpty()) {
            return new ResponseEntity<>("Please select a file to upload", HttpStatus.BAD_REQUEST);
        }

        try {
            String fileName = file.getOriginalFilename();
            String filePath = uploadDir + File.separator + fileName;
            file.transferTo(new File(filePath));

            return new ResponseEntity<>("File uploaded successfully", HttpStatus.OK);
        } catch (IOException e) {
            return new ResponseEntity<>("Failed to upload file",