SpringAOP实战应用
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 {
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(ServiceInitializer.class);
}
@Bean
public LogAspect logAspect() {
return new LogAspect();
}
@Bean
public ServiceExceptionAspect serviceExceptionAspect() {
return new ServiceExceptionAspect();
}
}本文参与 腾讯云自媒体分享计划，分享自作者个人站点/博客。
原始发表：2017-06-22 ，如有侵权请联系 cloudcommunity@tencent.com 删除
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