Spring boot AspectJ自定义参数注释在Spring Boot中不起作用
我正在尝试创建一个名为Spring boot AspectJ自定义参数注释在Spring Boot中不起作用,spring-boot,java-8,aspectj,Spring Boot,Java 8,Aspectj,我正在尝试创建一个名为@ValidDate的自定义注释,以检查给定的日期对象是否不超过一周 这是注释定义 package com.verimi.kitchenservice.annotations; import java.lang.annotation.ElementType; import java.lang.annotation.Retention; import java.lang.annotation.RetentionPolicy; import java.lang.annotat
@ValidDate
的自定义注释,以检查给定的日期对象是否不超过一周
这是注释定义
package com.verimi.kitchenservice.annotations;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
@Retention(RetentionPolicy.RUNTIME)
@Target({ ElementType.METHOD, ElementType.FIELD, ElementType.PARAMETER, ElementType.ANNOTATION_TYPE})
public @interface ValidDate {
}
下面是AspectJ行为定义类
package com.verimi.kitchenservice.validators;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.context.annotation.EnableAspectJAutoProxy;
import org.springframework.stereotype.Component;
@Aspect
@Component
@EnableAspectJAutoProxy(proxyTargetClass = true)
public class DateValidator {
@Before(value = "@annotation(com.verimi.kitchenservice.annotations.ValidDate)")
public Object before(JoinPoint parameter) {
System.out.println( "called here" + parameter.toString() );
return null;
}
}
下面是我的RestController的用法:
@GetMapping("/week_plan")
public List<DayOfService> all(@RequestParam("date") @DateTimeFormat(pattern="yyyy-MM-dd") @ValidDate Date requestedDate) {
List<DayOfService> dayOfServiceList = new ArrayList<>();
...
}
@Validated // Will validate in this controller
@RestController
public class ValidController {
@GetMapping("validation")
public String get(@RequestParam("date") @DateTimeFormat(pattern = "yyyy-MM-dd") @ValidDate LocalDate requestedDate) {
return "valid";
}
// The exception handler is need to return a status 400 instead of 500
// plus the message in the body of the response
@ExceptionHandler(ConstraintViolationException.class)
public ResponseEntity<String> onValidationError(Exception e) {
return new ResponseEntity(e.getMessage(), HttpStatus.BAD_REQUEST);
}
}
如果它可以像上面那样工作,为什么不为@annotation
工作呢
我还具有以下依赖关系:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</artifactId>
<version>2.4.3</version>
</dependency>
org.springframework.boot
弹簧启动机aop
2.4.3
首先,您必须将验证启动程序添加到pom.xml中:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>
org.springframework.boot
弹簧启动启动器验证
接下来,您必须创建自己的验证注释:
@Documented
@Constraint(validatedBy = DateValidator.class)
@Target({ElementType.PARAMETER})
@Retention(RetentionPolicy.RUNTIME)
public @interface ValidDate {
String message() default "Date is not of last week";
Class<?>[] groups() default {};
Class<? extends Payload>[] payload() default {};
}
@已记录
@约束(validatedBy=DateValidator.class)
@目标({ElementType.PARAMETER})
@保留(RetentionPolicy.RUNTIME)
public@interface ValidDate{
String message()默认为“日期不是上周”;
类[]组()默认值{};
ClassI注意到您正在注释参数而不是方法,您是否可以尝试注释一个方法以查看它是否有效?我的印象是,这对于参数是不可能的,但不要引用this@dreamcrash瞧!当我将注释移动到方法级别时,它就工作了。但是为什么不能将它作为参数呢表示法?将其作为参数级别更为合理。我认为这只是AspectJ的一个限制。为什么不使用Bean验证来支持这一开箱即用的方法呢?非常感谢您的详细回答。感谢SO上的人的方法是将他们的答案标记为已接受。如果您的问题仍然没有解决,请在com中解释为了激励其他人回答这个问题。
public class DateValidator implements ConstraintValidator<ValidDate, LocalDate> {
@Override
public boolean isValid(LocalDate value, ConstraintValidatorContext context) {
return dateIsOfLastWeek(value);
}
private boolean dateIsOfLastWeek(LocalDate value) {
return value.isAfter(LocalDate.now().plusDays(7)) && value.isBefore(LocalDate.now());
}
}
@Validated // Will validate in this controller
@RestController
public class ValidController {
@GetMapping("validation")
public String get(@RequestParam("date") @DateTimeFormat(pattern = "yyyy-MM-dd") @ValidDate LocalDate requestedDate) {
return "valid";
}
// The exception handler is need to return a status 400 instead of 500
// plus the message in the body of the response
@ExceptionHandler(ConstraintViolationException.class)
public ResponseEntity<String> onValidationError(Exception e) {
return new ResponseEntity(e.getMessage(), HttpStatus.BAD_REQUEST);
}
}