SpringBoot中实现批量文件上传

朱雀 2023-10-18 17:15 284阅读 0赞

## 场景 ##

项目搭建专栏：

[https://blog.csdn.net/BADAO\_LIUMANG\_QIZHI/column/info/35688][https_blog.csdn.net_BADAO_LIUMANG_QIZHI_column_info_35688]

本文在SpringBoot实现文件上传的基础上，参照：

[https://blog.csdn.net/BADAO\_LIUMANG\_QIZHI/article/details/89363347][https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_89363347]

## 实现 ##

在templates下新建uploadBatch.html

![Image 1][]![20190417200034326.jpg][]

<!DOCTYPE html>
    <html>
    <head>
    <meta charset="UTF-8">
    <title>uploadBatch test</title>
    </head>
    <body>
    
    <form method="POST" enctype="multipart/form-data" action="/upload/batch">
     <p>
      文件1<input type="file" name="file"/>
      
     </p>
     <p>
      文件2<input type="file" name="file"/>
      
     </p>
     <p>
      文件3<input type="file" name="file"/>
      
     </p>
     <p>
      <input type="submit" value="上传"/>
     </p>
    </form>
    </body>
    </html>

UploadController中新增方法

@RequestMapping("/toUploadBatch")
     private String toUploadBatch() {
      return "uploadBatch";
     }
     
     @RequestMapping(value="/upload/batch",method=RequestMethod.POST)
     @ResponseBody
     //file要与表单上传的名字相同
     public String  uploadFiles(MultipartFile[] file,HttpServletRequest request) {
      try {
       //创建文件在服务器端存放路径
       String dir = request.getServletContext().getRealPath("/upload");
       File fileDir = new File(dir);
       if(!fileDir.exists()) {
        fileDir.mkdirs();
       }
       //生成文件在服务器端存放的名字
       for(int i=0;i<file.length;i++) {
       String fileSuffix = file[i].getOriginalFilename().substring(file[i].getOriginalFilename().lastIndexOf("."));
       String fileName=UUID.randomUUID().toString()+fileSuffix;
       
       File files = new File(fileDir+"/"+fileName);
       //上传
       file[i].transferTo(files);
       }
       
      } catch (Exception e) {
       e.printStackTrace();
       return "上传失败";
      }
      return "上传成功";
     }

运行项目，访问

[http://localhost:8080/toUploadBatch][http_localhost_8080_toUploadBatch]

![Image 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70][]

选择多个文件后

![Image 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 1][]

点击上传

![Image 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 2][]

来到项目实际目录下

![Image 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 3][]

## 源码下载 ##

[https://download.csdn.net/download/badao\_liumang\_qizhi/11117936][https_download.csdn.net_download_badao_liumang_qizhi_11117936]

[https_blog.csdn.net_BADAO_LIUMANG_QIZHI_column_info_35688]: https://blog.csdn.net/BADAO_LIUMANG_QIZHI/column/info/35688
[https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_89363347]: https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/89363347
[Image 1]: 
[20190417200034326.jpg]: https://img-blog.csdnimg.cn/20190417200034326.jpg
[http_localhost_8080_toUploadBatch]: http://localhost:8080/toUploadBatch
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/2019041720010994.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20190417200114294.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20190417200119492.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 3]: https://img-blog.csdnimg.cn/20190417200122702.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70
[https_download.csdn.net_download_badao_liumang_qizhi_11117936]: https://download.csdn.net/download/badao_liumang_qizhi/11117936