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Springboot中使用AOP特性非常简单，使用@AspectJ注解，然后再配置中开启AspectJ即可。在日常的应用，有时可以将日志记录和异常处理在一个拦截器中统一处理，但有时在项目中无法通过一个拦截器解决所有切面问题，此时，就需要将日志、异常处理等拦截器功能拆分开来，但有一点是相同的，就是在需要时增加一个抽象层次用于拦截。

基础知识

这部分的细节主要是注解的使用，可以参看之后示例。
参考资料
http://www.cnblogs.com/best/p/5736422.html

实践

AOP配置

@Configuration
@EnableAspectJAutoProxy
public class AOPConfig {
}

Log（AOP）实例

@Aspect
@Component
public final class LogInterceptor {private final static int DEFAULT_MAX_LOG_LENGTH = 8192;@Pointcut("execution(*  com.bjork.ws.XXXWSImplForSpring.*(..))")public void serviceMethodPointcut() {}@Pointcut("execution( * com.bjork.ws.agent..*.*(..)) && @annotation(com.bjork.ws.core.AgentOriginalMethod)")public void agentOriginalMethodPointcut() {}@Around("serviceMethodPointcut() || agentOriginalMethodPointcut()")// @Around("agentOriginalMethodPointcut()")public Object Interceptor(ProceedingJoinPoint pjp) throws Throwable {// 获取aop相关信息Signature signature = pjp.getSignature();MethodSignature methodSignature = (MethodSignature) signature;Method targetMethod = methodSignature.getMethod();Class<?> returnType = targetMethod.getReturnType();Object result = null;Logger logger = LoggerFactory.getLogger(pjp.getTarget().getClass());try {// 设置默认返回值result = returnType.newInstance();logger.info(String.format("%s方法调用开始！", targetMethod.getName()));// 约定只有一个参数Object uniqueParameter = pjp.getArgs()[0];logRequest(JsonHelper.serialize(uniqueParameter), logger);result = pjp.proceed();logResponse(JsonHelper.serialize(result), logger);} finally {logger.info(String.format("%s方法调用结束！", targetMethod.getName()));}return result;}protected void logRequest(String requestString, Logger logger) {if (requestString.length() <= DEFAULT_MAX_LOG_LENGTH)logger.info(String.format("请求体为：%s", requestString));}protected void logResponse(String responseString, Logger logger) {if (responseString.length() <= DEFAULT_MAX_LOG_LENGTH)logger.info(String.format("响应体为：%s", responseString));}
}

Exception （AOP）实例

@Aspect
@Component
public final class ServiceInterceptor {@Pointcut("execution(* com.bjork.ws.service..*(..)) "+ "&& @annotation(com.bjork.ws.core.ServiceOpenMethod)")public void serviceMethodPointcut() {}@Around("serviceMethodPointcut()")public GenericResult Interceptor(ProceedingJoinPoint pjp) {// 获取aop相关信息Signature signature = pjp.getSignature();MethodSignature methodSignature = (MethodSignature) signature;Method targetMethod = methodSignature.getMethod();// Class<?> returnType = targetMethod.getReturnType();GenericResult result = new GenericResult();Logger logger = LoggerFactory.getLogger(pjp.getTarget().getClass());try {// 设置默认返回值// result = returnType.newInstance();// 约定只有一个参数Object uniqueParameter = pjp.getArgs()[0];result = (GenericResult) pjp.proceed();} catch (ValidException vex) {result.getResultInfo().setIsSuccessful(false);result.getResultInfo().setCode(vex.getErrorCode());result.getResultInfo().setMessage(vex.getMessage());logger.info(vex.getMessage());} catch (BizException bex) {result.getResultInfo().setIsSuccessful(false);result.getResultInfo().setCode(bex.getErrorCode());result.getResultInfo().setMessage(bex.getMessage());logger.warn(bex.getMessage());} catch (ExternalCallException ecex) {result.getResultInfo().setIsSuccessful(false);result.getResultInfo().setCode(ecex.getErrorCode());result.getResultInfo().setMessage(ecex.getMessage());logger.warn(ecex.getMessage());} catch (Throwable ex) {result.getResultInfo().setIsSuccessful(false);result.getResultInfo().setCode(ExceptionInfo.SYSTEM_EXCEPTION_CODE);result.getResultInfo().setMessage(ExceptionInfo.SYSTEM_EXCEPTION_MESSAGE);logger.error(ex.getMessage(), ex);} finally {}return result;}
}

AutoConfiguration配置

@SpringBootApplication(exclude = { DataSourceAutoConfiguration.class })
//@SpringBootApplication
@ComponentScan("com.xxx.ws")
public class ServiceInitializer extends SpringBootServletInitializer {@Overrideprotected SpringApplicationBuilder configure(SpringApplicationBuilder application) {return application.sources(ServiceInitializer.class);}@Beanpublic LogAspect logAspect() {return new LogAspect();}@Beanpublic ServiceExceptionAspect serviceExceptionAspect() {return new ServiceExceptionAspect();}
}