Spring 数据校验

1.定义需要校验的类

@Data
public class Person {

    private String name;

    private int age;
}

2.编写校验器

@Component
public class PersonValidator implements Validator {
    @Override
    public boolean supports(Class<?> clazz) {
        return Person.class.equals(clazz);
    }

    @Override
    public void validate(Object target, Errors errors) {
        ValidationUtils.rejectIfEmpty(errors, "name", "name.empty");
        Person p = (Person) target;
        if(p.getAge()<0){
            errors.rejectValue("age","negativeValue");
        }else if(p.getAge()>110){
            errors.rejectValue("age","too.darn.old");
        }
    }
}

3.在Web中引用校验器，编写测试类

@RestController
public class TestController {

    @Autowired
    private PersonValidator personValidator;

    @InitBinder
    public void initBinder(WebDataBinder binder) {
        System.out.println("initBinder");
        binder.addValidators(personValidator);

    }

    /**
     * 127.0.0.1:8886/get
     * 测试Spring的数据校验
     *
     * @return
     */
    @GetMapping(value = "/get")
    public Object get(@Valid Person person, BindingResult bindingResult) throws IOException {
        System.out.println(bindingResult.hasErrors());
        System.out.println(bindingResult.getModel());
        return bindingResult;
    }
    
}

个人感觉有点鸡肋，没有hibernate的注解式数据校验好用