springboot:aop

===================================================
application.properties 增加aop选项
===================================================
# AOP
spring.aop.auto=true
spring.aop.proxy-target-class=true

如果proxy-target-class 属性值被设置为true，那么基于类的代理将起作用（这时需要cglib库）。
如果proxy-target-class属值被设置为false或者这个属性被省略，那么标准的JDK 基于接口的代理。
如果不给出 proxy-target-class，就按 proxy-target-class=“false”对待，也即是按JDK proxy来处理的。
===================================================
AopTest.java

<bean id="logService" class="org.spring.springboot.aop.AopTest"/>
    <aop:config>
        <aop:aspect id="log" ref="logService">
            <aop:pointcut expression="execution(public * org.spring.springboot.web..*.*(..))" id="cLog"/>
            <aop:before method="around" pointcut-ref="cLog"/>
            <aop:before method="before" pointcut-ref="cLog"/>
            <aop:after method="after" pointcut-ref="cLog"/>
            <aop:after-returning method="doAfterReturning" pointcut-ref="cLog" returning="object"/>
            <aop:after-throwing method="doAfterThrowing" pointcut-ref="cLog" arg-names="joinpoint,exception"
                                throwing="exception"/>
        </aop:aspect>
    </aop:config>

===================================================
@Aspect
@Component
public class AopTest {

    @Pointcut("execution(public * org.spring.springboot.web..*.*(..))")
    public void webLog(){}

    @Before("webLog()")
    public void before(JoinPoint joinpoint) {

        // 此方法返回的是一个数组，数组中包括request以及ActionCofig等类对象
        Object[] args = joinpoint.getArgs();

        if (args != null && args.length > 0) {

            if (args[0] instanceof HttpServletRequest) {
                HttpServletRequest request = (HttpServletRequest) args[0];
                System.out.println("Request URI: " + request.getRequestURI());
            }
        }
    }

    @After("webLog()")
    public void after(JoinPoint joinpoint) {
        System.out.println("joinpoint = [" + joinpoint + "]");
    }

    @AfterReturning(returning = "ret", pointcut = "webLog()")
    public void doAfterReturning(Object ret) throws Throwable {
        System.out.println("ret = [" + ret + "]");
    }

    @AfterThrowing(pointcut = "webLog()", argNames = "joinpoint,exception", throwing = "exception")
    public void doAfterThrowing(JoinPoint joinpoint, Exception exception) {

        String className = joinpoint.getTarget().getClass().getName();// 类名
        String methodName = joinpoint.getSignature().getName();// 方法名字

        String content = "--------------------------------reqlog. Exception error class "
                + className
                + "_"
                + methodName
                + "====== message ======"
                + exception.getMessage();
        System.out.println(content);
        System.out.println(exception);
    }

}