SpringBoot AOP

<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 http://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>2.0.1.RELEASE</version>
        <relativePath />
    </parent>
    <groupId>com.study</groupId>
    <artifactId>SpringBootTest-1</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>RequestBodyTest</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-web</artifactId>
        </dependency>
        
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-aop</artifactId>
        </dependency>

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

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

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

</project>

package com.aop.test;

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

@SpringBootApplication
public class Application {

    public static void main(String[] args) {

    SpringApplication.run(Application.class, args);
    }

}

package com.aop.test;

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

/**
 * 在系统运行时动态添加代码的方式称为面向切面编程(AOP)
 *
 */
@Component
@Aspect
public class LogAspect {
    @Pointcut("execution(* com.aop.test.service.*.*(..))")
    public void pc1() {
    }
    @Before(value = "pc1()")
    public void before(JoinPoint jp) {
        String name = jp.getSignature().getName();
        System.out.println(name + "方法开始执行...");
    }
    @After(value = "pc1()")
    public void after(JoinPoint jp) {
        String name = jp.getSignature().getName();
        System.out.println(name + "方法执行结束...");
    }
    @AfterReturning(value = "pc1()", returning = "result")
    public void afterReturning(JoinPoint jp, Object result) {
        String name = jp.getSignature().getName();
        System.out.println(name + "方法返回值为：" + result);
    }
    @AfterThrowing(value = "pc1()",throwing = "e")
    public void afterThrowing(JoinPoint jp,Exception e) {
        String name = jp.getSignature().getName();
        System.out.println(name+"方法抛异常了，异常是："+e.getMessage());
    }
    @Around("pc1()")
    public Object around(ProceedingJoinPoint pjp) throws Throwable {
        return pjp.proceed();
    }
}

package com.aop.test;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import com.aop.test.service.UserService;

@RestController
public class UserController {

    @Autowired
    UserService userService;
    
    
    @GetMapping("/getUserById")
    public String getUserById(Integer id) {
    return userService.getUserById(id);
    }
    
    @GetMapping("/deleteUserById")
    public void deleteUserById(Integer id) {
    userService.delteUserById(id);
    }
    
}

package com.aop.test.service;

import org.springframework.stereotype.Service;

@Service
public class UserService {

    public String getUserById(Integer id) {
    System.out.println("Get user by id...");
    return "user";
    }
    
    public void delteUserById(Integer id) {
    System.out.println("Delete user by id ...");
    }
}