Springboot+aop+annotation

一、不结合注解方式的aop

1、首先要见一个springboot的项目

2、pom.xml中引入包

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <parent>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-parent</artifactId>
      <version>2.3.1.RELEASE</version>
      <relativePath/> <!-- lookup parent from repository -->
   </parent>
   <groupId>com.example</groupId>
   <artifactId>demo</artifactId>
   <version>0.0.1-SNAPSHOT</version>
   <name>demo</name>
   <description>Demo project for Spring Boot</description>

   <properties>
      <java.version>1.8</java.version>
   </properties>

   <dependencies>
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter</artifactId>
      </dependency>

      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-test</artifactId>
         <scope>test</scope>
         <exclusions>
            <exclusion>
               <groupId>org.junit.vintage</groupId>
               <artifactId>junit-vintage-engine</artifactId>
            </exclusion>
         </exclusions>
      </dependency>

      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-web</artifactId>
         <exclusions>
            <exclusion>
               <groupId>org.springframework.boot</groupId>
               <artifactId>spring-boot-starter-tomcat</artifactId>
            </exclusion>
         </exclusions>
      </dependency>
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-jetty</artifactId>
      </dependency>
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-aop</artifactId>
      </dependency>

   </dependencies>

   <build>
      <plugins>
         <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
         </plugin>
      </plugins>
   </build>

</project>

3、配置application.properties

4、编写Aspect类

package owner;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.*;
import org.springframework.stereotype.Component;

@Aspect
@Component
public class LogOwnerAspect {


    @Pointcut("execution(public * owner.*.*(..))")
    public void execute(){}


    @Before("execute()")
    public void before(){
        System.out.println("LogOwnerAspect方法执行前");
    }

    @Around("execute()")
    public Object around(ProceedingJoinPoint pjd) throws  Throwable{
        System.out.println("LogOwnerAspect环绕执行");
        Object res= pjd.proceed();
        System.out.println("LogOwnerAspect环绕执行hou"+res);
        return res;
    }

    @After("execute()")
    public void after(){
        System.out.println("LogOwnerAspect方法执行后");
    }

  /*  @Around("execute()")
    public void around(ProceedingJoinPoint pjd) throws  Throwable{
        System.out.println("环绕执行");
        Object res= pjd.proceed();
        System.out.println("环绕执行2"+res);

    }*/
}

5、编写后面的类

package owner;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/Owner")
public class UserOwnerController {

    @RequestMapping("/first")
    public String first(){
        return "first Controller";
    }
    @RequestMapping("/second")
    @UserAccessOwner()
    public String second(){
        return "second Controller";
    }
}

6、编写启动类

package owner;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class OwnerApplication {
    public static void main(String[] args) {
        SpringApplication.run(OwnerApplication.class);
    }
}

7、运行OwnerApplication，访问http://localhost:8092/Owner/first

二、结合注解aop

1、首先要见一个springboot的项目

2、pom.xml中引入包

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <parent>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-parent</artifactId>
      <version>2.3.1.RELEASE</version>
      <relativePath/> <!-- lookup parent from repository -->
   </parent>
   <groupId>com.example</groupId>
   <artifactId>demo</artifactId>
   <version>0.0.1-SNAPSHOT</version>
   <name>demo</name>
   <description>Demo project for Spring Boot</description>

   <properties>
      <java.version>1.8</java.version>
   </properties>

   <dependencies>
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter</artifactId>
      </dependency>

      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-test</artifactId>
         <scope>test</scope>
         <exclusions>
            <exclusion>
               <groupId>org.junit.vintage</groupId>
               <artifactId>junit-vintage-engine</artifactId>
            </exclusion>
         </exclusions>
      </dependency>

      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-web</artifactId>
         <exclusions>
            <exclusion>
               <groupId>org.springframework.boot</groupId>
               <artifactId>spring-boot-starter-tomcat</artifactId>
            </exclusion>
         </exclusions>
      </dependency>
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-jetty</artifactId>
      </dependency>
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-aop</artifactId>
      </dependency>

   </dependencies>

   <build>
      <plugins>
         <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
         </plugin>
      </plugins>
   </build>

</project>

3、配置application.properties

4、编写注解

package owner;

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)
public @interface UserAccessOwner {
    String value() default "无信息";
}

5、编写Aspect类

package owner;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.reflect.Method;

@Aspect
@Component
public class UserAccessOwnerAspect {

    @Pointcut("@annotation(owner.UserAccessOwner)")
    public void access(){}

    @Around("access()")
    public Object around(ProceedingJoinPoint joinPoint) throws Throwable{
        System.out.println("执行前");
        Method method =((MethodSignature)joinPoint.getSignature()).getMethod();
        /*System.out.println(method.getName());
        System.out.println(method.getAnnotation(UserAccessOwner.class));*/
        UserAccessOwner userAccessOwner= method.getAnnotation(UserAccessOwner.class);
        System.out.println("second around:"+userAccessOwner.value());
        System.out.println(method.getDeclaringClass());
        Object object=joinPoint.proceed();
        System.out.println("执行后"+object);
        return object;
    }
}
6、编写后面的类

package owner;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/Owner")
public class UserOwnerController {

    @RequestMapping("/first")
    public String first(){
        return "first Controller";
    }
    @RequestMapping("/second")
    @UserAccessOwner("自己的")
    public String second(){
        return "second Controller";
    }
}

7、编写启动类

package owner;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class OwnerApplication {
    public static void main(String[] args) {
        SpringApplication.run(OwnerApplication.class);
    }
}

8、运行OwnerApplication，访问http://localhost:8092/Owner/second