在实际的项目开发中,很多时候上传的文件会作为对象的属性被保存,SpringMVC的处理也非常简单:

1.提交表单视图

    <form action="/springTest/avatarUpload" enctype="multipart/form-data" method="post">
        
        <input type="text" name="username" />
        <input type="file" name="image" />
        
        <input type="submit" value="submit" />
        
    </form>

2.模型

public class User implements Serializable
{
    private String username;
    private MultipartFile image;
    
    public User()
    {
        super();
    }
...

3.控制器

@Controller
public class FileUploadController
{
    @GetMapping("/testUpload")
    public String testUpload(
            )
    {
        return "Form8";
    }
    
    @PostMapping(value="/avatarUpload")
    public String commit(
            HttpServletRequest request,
            @ModelAttribute User user,
            Model model
            ) throws Exception
    {
        //上传文件路径
        String path = request.getServletContext().getRealPath("/images/");
        //上传文件名
        String filename = user.getImage().getOriginalFilename();
        File filepath = new File(path,filename);
        //判断路径是否存在如果不存在就创建
        if(!filepath.getParentFile().exists())
        {
            filepath.getParentFile().mkdirs();
        }
        System.out.println(path+File.separator+filename);
        //将上传文件保存到目标路径当中
        user.getImage().transferTo(new File(path+File.separator+filename));
        model.addAttribute("user", user);
        return "uploadSuccess";
    }
}

4.显示数据视图

    <h2>上传成功</h2>
    <h3>${user.username}</h3>
    <img src="images/${requestScope.user.image.originalFilename}">