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這篇文章給大家介紹springboot中怎么利用vue實(shí)現(xiàn)文件上傳下載功能,內(nèi)容非常詳細(xì),感興趣的小伙伴們可以參考借鑒,希望對(duì)大家能有所幫助。
1、上傳下載文件api文件
設(shè)置上傳路徑,如例子:
private final static String rootPath =System.getProperty(“user.home”)+File.separator+fileDir+File.separator;
api接口:
下載url示例:http://localhost:8080/file/download?fileName=新建文本文檔.txt
//上傳不要用@Controller,用@RestController@RestController@RequestMapping("/file")public class FileController { private static final Logger logger = LoggerFactory.getLogger(FileController.class); //在文件操作中,不用/或者\(yùn)最好,推薦使用File.separator private final static String fileDir="files"; private final static String rootPath = System.getProperty("user.home")+File.separator+fileDir+File.separator; @RequestMapping("/upload") public Object uploadFile(@RequestParam("file") MultipartFile[] multipartFiles, final HttpServletResponse response, final HttpServletRequest request){ File fileDir = new File(rootPath); if (!fileDir.exists() && !fileDir.isDirectory()) { fileDir.mkdirs(); } try { if (multipartFiles != null && multipartFiles.length > 0) { for(int i = 0;i<multipartFiles.length;i++){ try { //以原來(lái)的名稱命名,覆蓋掉舊的 String storagePath = rootPath+multipartFiles[i].getOriginalFilename(); logger.info("上傳的文件:" + multipartFiles[i].getName() + "," + multipartFiles[i].getContentType() + "," + multipartFiles[i].getOriginalFilename() +",保存的路徑為:" + storagePath); Streams.copy(multipartFiles[i].getInputStream(), new FileOutputStream(storagePath), true); //或者下面的 // Path path = Paths.get(storagePath); //Files.write(path,multipartFiles[i].getBytes()); } catch (IOException e) { logger.error(ExceptionUtils.getFullStackTrace(e)); } } } } catch (Exception e) { return ResultUtil.error(e.getMessage()); } return ResultUtil.success("上傳成功!"); } /** * http://localhost:8080/file/download?fileName=新建文本文檔.txt * @param fileName * @param response * @param request * @return */ @RequestMapping("/download") public Object downloadFile(@RequestParam String fileName, final HttpServletResponse response, final HttpServletRequest request){ OutputStream os = null; InputStream is= null; try { // 取得輸出流 os = response.getOutputStream(); // 清空輸出流 response.reset(); response.setContentType("application/x-download;charset=GBK"); response.setHeader("Content-Disposition", "attachment;filename="+ new String(fileName.getBytes("utf-8"), "iso-8859-1")); //讀取流 File f = new File(rootPath+fileName); is = new FileInputStream(f); if (is == null) { logger.error("下載附件失敗,請(qǐng)檢查文件“" + fileName + "”是否存在"); return ResultUtil.error("下載附件失敗,請(qǐng)檢查文件“" + fileName + "”是否存在"); } //復(fù)制 IOUtils.copy(is, response.getOutputStream()); response.getOutputStream().flush(); } catch (IOException e) { return ResultUtil.error("下載附件失敗,error:"+e.getMessage()); } //文件的關(guān)閉放在finally中 finally { try { if (is != null) { is.close(); } } catch (IOException e) { logger.error(ExceptionUtils.getFullStackTrace(e)); } try { if (os != null) { os.close(); } } catch (IOException e) { logger.error(ExceptionUtils.getFullStackTrace(e)); } } return null; }}
訪問(wèn):http://localhost:8080
上傳:
批量上傳:
下載:
2.上傳大文件配置
/** * 設(shè)置上傳大文件大小,配置文件屬性設(shè)置無(wú)效 */ @Bean public MultipartConfigElement multipartConfigElement() { MultipartConfigFactory config = new MultipartConfigFactory(); config.setMaxFileSize("1100MB"); config.setMaxRequestSize("1100MB"); return config.createMultipartConfig(); }
3.vue前端主要部分
<template> <p > <el-form :model="form" label-width="220px"> <el-form-item label="請(qǐng)輸入文件名" required> <el-input v-model="form.fileName" auto-complete="off" class="el-col-width" required></el-input> </el-form-item> <el-form-item> <el-button size="small" type="primary" @click="handleDownLoad">下載</el-button> </el-form-item> <el-form-item> <el-upload class="upload-demo" :action="uploadUrl" :before-upload="handleBeforeUpload" :on-error="handleUploadError" :before-remove="beforeRemove" multiple :limit="5" :on-exceed="handleExceed" :file-list="fileList"> <el-button size="small" type="primary">點(diǎn)擊上傳</el-button> <p slot="tip" class="el-upload__tip">一次文件不超過(guò)1Gb</p> </el-upload> </el-form-item> </el-form> </p></template>
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