Knowledge points of mall development

Menu hierarchy ：


Rheogenesis ：

       Map<String,String> map=new HashMap<>();
            //1. Get the wrong verification result 
            result.getFieldErrors().forEach((item)->{
                // Get the... When an error occurs message
                String message = item.getDefaultMessage();
                // Get the field where the error occurred 
                String field = item.getField();
                map.put(field,message);
            });