文章内容
在spring boot中使用spring-boot-starter-aop对自定义注解的支持，本质上是spring aop对自定义注解的支持。
spring-boot-starter-aop自定义注解步骤如下：
1、编写自定义注解类
@Documented
@Target({ElementType.PARAMETER, ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
public @interface ULog {
}
2、编写注解类切面
@Aspect
@Component
public class HLogAspect {
@Pointcut("@annotation(com.yql.service.ULog)")
public void annotationPointCut() {
}
@Before("annotationPointCut()")
public void before(JoinPoint joinPoint){
MethodSignature sign = (MethodSignature)joinPoint.getSignature();
Method method = sign.getMethod();
System.out.print("接受方法："+method.getName()+" 前置日志");
}
}
3、在spring boot的Application启动类中使用@EnableAspectJAutoProxy注解，添加对Aspectj支持
@SpringBootApplication
//开启spring对Aspectj的支持
@EnableAspectJAutoProxy
public class AopApplication {
public static void main(String[] args) {
SpringApplication.run(AopApplication.class, args);
}
}
4、调用自定义注解
@RestController
public class TestController {
@RequestMapping(value="/")
@ULog
public String test(){
return "hello world";
}
}
5、pom文件需要添加一下依赖
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</artifactId>
</dependency>
</dependencies>