Question

    i have a Employee class with the following content:

    public class Employee {

        @NotNull(message="Field Cannot be Empty")
        private String epfno;

        @NotNull(message="Field Cannot be Empty")
        private String empno;

        @NotNull(message="Field Cannot be Empty")
        private String empfullname;

        @NotNull(message="Field Cannot be Empty")
        private Address address;

       ****GETTERS AND SETTERS****

    }

    Address class class with the following content:

    public class Address {

        private int addressid;
        private Employee employee;

        @NotNull(message="Field Cannot be Empty")
        private String description;

       ****Getters and SETTERS****
    }

控制器类，包含以下内容：当我尝试验证地址字段时，表单实际返回null。而不是抛出一个非null错误消息。我在控制器中进行了调试以捕获它 @RequestMapping（value =＆＃34; / Form / Employee / Submit＆＃34;，method = RequestMethod.POST） public String SubmitEmployeeForm（@Valid @ModelAttribute（＆＃34; Employee＆＃34;）Employee Employee，BindingResult br）{

        if(br.hasErrors())
        {
            logger.info("Form Validation Errors have Occured");
            return "Homepage";
        }

        else {

            // Does not through error instead sends null when field is empty 

            System.out.println(Employee.getAddress().getDescription()); // Null
            return "Homepage";
        }


    }

How can i get the address field to get populated with a not null error message instead of it passing the value null ? thanks

Answer 1

    I figured it out. after adding the @valid annotation on the address object it worked 
    fine.

        public class Employee {

        @NotNull(message="Field Cannot be Empty")
        @valid
        private Address address;

       ****GETTERS AND SETTERS****

    }

用户定义对象的Spring表单验证

1 个答案: