springboot 上传文件

package com.taven.demo;

import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
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;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@RestController
@RequestMapping("/file")
public class FileController {

    @PostMapping("/upload1")
    public Map<String, String> upload1(@RequestParam("file") MultipartFile file) throws IOException {
        file.transferTo(new File("/Users/taven/demo/" + file.getOriginalFilename()));
        Map<String, String> result = new HashMap<>();
        result.put("contentType", file.getContentType());
        result.put("fileName", file.getOriginalFilename());
        result.put("fileSize", file.getSize() + "");
        return result;
    }

    @PostMapping("/upload2")
    public List<Map<String, String>> upload2(@RequestParam("file") MultipartFile[] files) throws IOException {
        if (files == null || files.length == 0) {
            return null;
        }
        List<Map<String, String>> results = new ArrayList<>();
        for (MultipartFile file : files) {
            file.transferTo(new File("/Users/taven/demo/" + file.getOriginalFilename()));
            Map<String, String> map = new HashMap<>();
            map.put("contentType", file.getContentType());
            map.put("fileName", file.getOriginalFilename());
            map.put("fileSize", file.getSize() + "");
            results.add(map);
        }
        return results;
    }
}