springboot+vue实现页面下载文件

本文实例为大家分享了springboot+vue页面下载文件的具体代码，供大家参考，具体内容如下

1.前端代码：

downloadFile(row) {
 window.location = "http://localhost:8001/file/downloadFile?taskId=" + row.id;
}

2.后端代码：

package com.gridknow.analyse.controller;


import com.alibaba.fastjson.JSON;
import com.gridknow.analyse.entity.DataInfo;
import com.gridknow.analyse.service.FileService;
import com.gridknow.analyse.utils.Download;
import com.gridknow.analyse.utils.Result;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.core.io.InputStreamResource;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;

import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.util.List;
import java.util.Map;


/**
 * @ClassName FileController
 * @Description: TODO
 * @Author Administrator
 * @Date 2020/8/20 14:02
 * @Version TODO
 **/

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

 @Value("${gridknow.mltc.imgurl}")
 private String imgUrl;

 @Autowired
 private FileService fileService;


 @CrossOrigin
 @RequestMapping(value = "/upload", method = RequestMethod.POST)
 @ResponseBody
 public Result upload(MultipartHttpServletRequest request) {
  List multipartFiles = request.getFiles("file");
  Map map = (Map) JSON.parse(request.getParameter("body"));
  String companyId = request.getParameter("companyId");
  String companyName = request.getParameter("companyName");
  boolean bool = fileService.uploadAndInsert(multipartFiles, map, companyId, companyName);
  if (bool) {
   return new Result(200);
  } else {
   return new Result(500);
  }
 }

 @GetMapping("/downloadFile")
 public ResponseEntity