SpringBoot+Vue文件上传+浏览

后端：

package cn.ljy.supplies.controller;


import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;

@RestController
public class FileUploadController {
    SimpleDateFormat sdf = new SimpleDateFormat("/yyyy/MM/dd/");
    @PostMapping("upload")
    public Map fileupload(MultipartFile file, HttpServletRequest req) {
        Map result = new HashMap<>();
        String originName = file.getOriginalFilename();
        if (!originName.endsWith(".pdf")) {
            result.put("status","error");
            result.put("asg","文件类型不对");
            return result;
        }
        String format = sdf.format(new Date());
        String realPath = req.getServletContext().getRealPath("/") +format;
        File folder = new File(realPath);
        if(!folder.exists()){
            folder.mkdirs();
        }
        String newName = UUID.randomUUID().toString() + ".pdf";
        try {
            file.transferTo(new File(folder,newName));
            String url = req.getScheme() + "://" + req.getServerName() + ":" + req.getServerPort() + format + newName;
            result.put("status","success");
            result.put("url",url);
        } catch (IOException e) {
            result.put("status","error");
            result.put("asg",e.getMessage());
        }
        return result;
    }
}

前端：