使用thymeleaf的html表单验证无法在Spring Boot

使用thymeleaf的html表单验证无法在Spring Boot

我觉得很麻烦，因为您放置BindingResult不正确。用MultipartHttpServletRequest替换它，它必须 在 验证参数之后：

@RequestMapping(method= RequestMethod.POST, value = "/create")public String createTest(@Valid @ModelAttribute("testForm") TestForm testForm,  BindingResult bindingResult, MultipartHttpServletRequest request) throws IOException {if (bindingResult.hasErrors())     return "createtestform";