src/main/java/com/example/myproject/controller/FileController.java

package com.example.myproject.controller;

import cn.hutool.core.io.FileUtil;
import cn.hutool.core.lang.UUID;
import com.example.myproject.common.base.Result;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;

@RestController
@RequestMapping("/file")
public class FileController {
    @PostMapping
    public Result upload(MultipartFile file){
        try{
            String originalFilename = file.getOriginalFilename();
            String fileName = FileUtil.mainName(originalFilename) + UUID.fastUUID().toString() + "." + FileUtil.getSuffix(originalFilename);  // 以用户ID作为文件名
            Path path = Paths.get("uploads/" + fileName);
            Files.createDirectories(path.getParent());
            Files.write(path, file.getBytes());
            String filepath = "/uploads/" + fileName;
            return Result.ok(filepath);  // 返回相对URL路径

        }catch (Exception ignore){
            return Result.failure("文件上传失败");
        }

    }
}