SpringBoot实现文件的上传和下载
记录上传下载方法，以便之后使用
文件上传
代码语言：javascript复制@RequestMapping(value = "/upload", method = RequestMethod.POST)
@ResponseBody
public String upload(@RequestParam MultipartFile file) throws IOException {
File fileObj = new File("test.png");
file.transferTo(fileObj);
System.out.println("用户上传的文件已保存到：" fileObj.getAbsolutePath());
return "文件上传成功！";
}前端添加一个文件的上传点：
代码语言：javascript复制<div>
<form action="upload" method="post" enctype="multipart/form-data">
<input type="file" name="file">
<input type="submit">
</form>
</div>下载
代码语言：javascript复制@RequestMapping(value = "/download", method = RequestMethod.GET)
@ResponseBody
public void download(HttpServletResponse response){
response.setContentType("multipart/form-data");
try(OutputStream stream = response.getOutputStream();
InputStream inputStream = new FileInputStream("test.png")){
IOUtils.copy(inputStream, stream);
}catch (IOException e){
e.printStackTrace();
}
}添加一个下载点：
代码语言：javascript复制<a href="download" download="test.png">下载最新资源</a>
