springboot整合vue实现上传下载文件

springboot整合vue实现上传下载文件，供大家参考，具体内容如下

环境

springboot 1.5.x

完整代码下载：springboot整合vue实现上传下载

1、上传下载文件api文件

设置上传路径，如例子：

private final static String rootPath =
System.getProperty(“user.home”)+File.separator+fileDir+File.separator;

api接口：

下载url示例:http://localhost:8080/file/download?fileName=新建文本文档.txt

//上传不要用@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\最好，推荐使用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 {
      //以原来的名称命名,覆盖掉旧的
      String storagePath = rootPath+multipartFiles[i].getOriginalFilename();
      logger.info("上传的文件：" + multipartFiles[i].getName() + "," + multipartFiles[i].getContentType() + "," + multipartFiles[i].getOriginalFilename()
        +"，保存的路径为：" + 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("上传成功!");
 }

 /**
  * http://localhost:8080/file/download?fileName=新建文本文档.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 {
   // 取得输出流
   os = response.getOutputStream();
   // 清空输出流
   response.reset();
   response.setContentType("application/x-download;charset=GBK");
   response.setHeader("Content-Disposition", "attachment;filename="+ new String(fileName.getBytes("utf-8"), "iso-8859-1"));
   //读取流
   File f = new File(rootPath+fileName);
   is = new FileInputStream(f);
   if (is == null) {
    logger.error("下载附件失败，请检查文件“" + fileName + "”是否存在");
    return ResultUtil.error("下载附件失败，请检查文件“" + fileName + "”是否存在");
   }
   //复制
   IOUtils.copy(is, response.getOutputStream());
   response.getOutputStream().flush();
  } catch (IOException e) {
   return ResultUtil.error("下载附件失败,error:"+e.getMessage());
  }
  //文件的关闭放在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;
 }
}

访问：http://localhost:8080

上传：

批量上传：

下载：

2.上传大文件配置

/**
  * 设置上传大文件大小，配置文件属性设置无效
  */
 @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>
 <div style="top:100px;width:300px">
  <el-form :model="form" label-width="220px">
   <el-form-item label="请输入文件名" 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">下载</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">点击上传</el-button>
     <div slot="tip" class="el-upload__tip">一次文件不超过1Gb</div>
    </el-upload>
   </el-form-item>
  </el-form>

 </div>
</template>

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