springboot+vue实现页面下载文件

springboot+vue实现页面-文件

本文实例为大家分享了springboot+vue页面-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

DataInfo dataInfo = fileService.queryTaskById(taskId);

if (dataInfo == null) {

return null;

}

File file = new File(dataInfo.getResponseUrl());

// 文件-

if (file.isFile()) {

return downloadFile(taskId);

}

// 文件夹压缩成zip-

if (file.isDirectory()) {

String parent = file.getParent();

// 创建临时存放文件夹

File temDir = new File(parent + "/" + taskId);

if (!temDir.exists()) {

temDir.mkdirs();

}

// 将需要-的文件夹和内容拷贝到临时文件夹中

try {

Download.copyDir(dataInfo.getResponseUrl(), parent + "/" + taskId);

} catch (IOException e) {

e.printStackTrace();

}

// 设置头部格式

response.setContentType("application/zip");

response.setHeader("Content-Disposition", "attachment; filename="+taskId+".zip");

// 调用工具类，-zip压缩包

try {

Download.toZip(temDir.getPath(), response.getOutputStream(), true);

} catch (IOException e) {

e.printStackTrace();

}

// 删除临时文件夹和内容

Download.delAllFile(new File(parent + "/" + taskId));

}

return null;

}

public ResponseEntity

DataInfo dataInfo = fileService.queryTaskById(taskId);

if (dataInfo == null) {

return null;

}

File file = new File(dataInfo.getResponseUrl());

String fileName = file.getName();

InputStreamResource resource = null;

try {

resource = new InputStreamResource(new FileInputStream(file));

} catch (Exception e) {

e.printStackTrace();

}

HttpHeaders headers = new HttpHeaders();

headers.add("Content-Disposition", String.format("attachment;filename=\"%s", fileName));

headers.add("Cache-Control", "no-cache,no-store,must-revalidate");

headers.add("Pragma", "no-cache");

headers.add("Expires", "0");

ResponseEntity

.headers(headers)

.contentLength(file.length())

.contentType(MediaType.parseMediaType("application/octet-stream"))

.body(resource);

return responseEntity;

}

}

工具类

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