Jojo的作业系统

简单的文件上传

代码如下

@RestController
@RequestMapping("/file")
public class FileController {@RequestMapping(method = RequestMethod.POST, value ="/upload")@ResponseBodypublic String uploadFile(@RequestParam("fileName") MultipartFile file) throws IOException {System.out.println("file name = "+file.getOriginalFilename());if (file.isEmpty()) {return "file is empty";}// 获取文件名String fileName = file.getOriginalFilename();// 获取后缀String suffixName = fileName.substring(fileName.lastIndexOf("."));// 文件上产的路径String filePath = "d:\\macro";// fileName处理
//        fileName = filePath+ UUID.randomUUID()+fileName;fileName = filePath+ Path.SEPARATOR+fileName;// 文件对象File dest = new File(fileName);// 创建路径if(!dest.getParentFile().exists()){dest.getParentFile().mkdir();}try {file.transferTo(dest);return "上传成功";} catch (IOException e) {e.printStackTrace();throw e;}}@RequestMapping("download")public void download(HttpServletResponse response) throws FileNotFoundException {File file =new File("C:\\Users\\ASUS\\Desktop\\spring-boot-reference.pdf");FileInputStream fileInputStream=new FileInputStream(file);// 设置被下载而不是被打开response.setContentType("application/gorce-download");// 设置被第三方工具打开,设置下载的文件名response.addHeader("Content-disposition","attachment;fileName=spring-boot-reference.pdf");try {OutputStream outputStream = response.getOutputStream();byte[] bytes = new byte[1024];int len = 0;while ((len = fileInputStream.read(bytes))!=-1){outputStream.write(bytes,0,len);}} catch (IOException e) {e.printStackTrace();}}
}

Postman的设置，注意不要添加任何header

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