springmvc数据校验。（后台校验 hibernate validate）.

Posted 2022-10-02 sh-0131

1.引入jar包

 

 2.在实体类里加相应的注解

 

 

 

3.在控制层接收参数

 

 

 

 

    @RequestMapping("registe")
    public String registe1(@Valid people peo,BindingResult br,Model model) 
        
        if(br.hasErrors()) 
            Map<String, Object> map=new HashMap<>();
            List<FieldError> fieldErrors = br.getFieldErrors();
            for(FieldError f:fieldErrors) 
                System.out.println(f.getField());
                map.put(f.getField(), f.getDefaultMessage());
            
            model.addAttribute("map", map);
            return "forward:../registe.jsp";
        else 
        return "list";