dw课设做网站,html基本知识,网站开发费用怎么账务处理,三亚按下了暂停键文章目录 实现思路实现代码starter组件 实现思路
这里使用FutureTask#xff0c;它通过get方法以阻塞的方式获取执行结果#xff0c;并设定超时时间#xff1a;
public V get() throws InterruptedException, ExecutionException ;public V get(long timeout, TimeUnit un… 文章目录 实现思路实现代码starter组件 实现思路
这里使用FutureTask它通过get方法以阻塞的方式获取执行结果并设定超时时间
public V get() throws InterruptedException, ExecutionException ;public V get(long timeout, TimeUnit unit) throws InterruptedException, ExecutionException, TimeoutException ;利用spring aop解耦业务定义业务异常信息
实现代码
定义注解
Documented
Retention(RetentionPolicy.RUNTIME)
Target({ElementType.ANNOTATION_TYPE, ElementType.METHOD})
public interface TimeoutCheck {/*** 超时时间默认5秒*/long timeout() default 5L;/*** 超时单位默认秒*/TimeUnit unit() default TimeUnit.SECONDS;/*** 超时后是否销毁线程*/boolean destroy() default true;
}
这里有一个destroy()的方法因为我们在执行时开独立线程处理所以这个方法是为了在超时后用来判断是否销毁还在执行的线程
定义异常
注意这里的父类应该是项目中的基础业务异常类
public class TimeoutCheckException extends RuntimeException{public TimeoutCheckException(String message) {super(message);}public TimeoutCheckException(String message, Throwable throwable) {super(message, throwable);}
}
再顺便定义一个属性配置
这个的作用是全局控制开关当不需要的时候可以直接通过配置关闭
Component
ConfigurationProperties(prefix aliweb.timeout)
public class TimeoutCheckProperties {private boolean enable true;public boolean isEnable() {return enable;}public void setEnable(boolean enable) {this.enable enable;}
}
最后就是我们的aop类
Aspect
Component
public class TimeoutAop {private static final Logger logger LoggerFactory.getLogger(TimeoutAop.class);Autowiredprivate TimeoutCheckProperties timeoutCheckProperties;Pointcut(annotation(timeoutCheck))public void pointCut(TimeoutCheck timeoutCheck) {}Around(value pointCut(timeoutCheck), argNames joinPoint, timeoutCheck)public Object around(ProceedingJoinPoint joinPoint, TimeoutCheck timeoutCheck) throws Throwable {if (!timeoutCheckProperties.isEnable()) {return joinPoint.proceed();}long timeout timeoutCheck.timeout();if (timeout 0) {throw new TimeoutCheckException(业务逻辑执行时间不能小于等于0);}long start System.currentTimeMillis();String msg null;Exception error null;Object data null;FutureTaskObject futureTask createTask(joinPoint);try {Thread thread new Thread(futureTask);thread.start();data futureTask.get(timeout, timeoutCheck.unit());} catch (InterruptedException e) {msg 执行中断;error e;} catch (ExecutionException e) {msg 执行异常;error e;} catch (TimeoutException e) {msg 执行超时;error e;} finally {futureTask.cancel(timeoutCheck.destroy());}logger.debug(执行时间{}, System.currentTimeMillis() - start);if (error ! null) {String suf error.getMessage() null ? : error.getMessage();logger.error(msg suf, error);throw new TimeoutCheckException(msg suf, error);}return data;}private static FutureTaskObject createTask(ProceedingJoinPoint joinPoint) {return new FutureTask(() - {try {return joinPoint.proceed();} catch (Throwable e) {throw new RuntimeException(e);}});}}
starter组件
将功能提取成starter组件:
定义配置类
Configuration
ComponentScan(com.liry.aliweb.timeout)
public class TimeoutCheckAutoConfig {
} 定义配置扫描文件spring.factories路径 src/main/resources/META-INF/spring.factories org.springframework.boot.autoconfigure.EnableAutoConfigurationcom.liry.aliweb.timeout.config.TimeoutCheckAutoConfigpom增加依赖 dependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-autoconfigure/artifactId
/dependency如上在主项目引入时就可以直接使用了
