添加guava框架,實現異步處理。
一、添加依賴
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>18.0</version>
</dependency>
二、註冊爲組件Bean
import com.google.common.eventbus.AsyncEventBus;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
/**
* web 配置類
*
* @author Creator
*/
@Configuration
public class WebConfig implements WebMvcConfigurer {
/**
* AsyncEventBus註冊
*/
@Bean
public AsyncEventBus asyncEventBus() {
// 創建一個核心3線程,最大10線程的線程池,配置DiscardPolicy策略,拋棄當前任務
ThreadPoolExecutor threadPoolExecutor = new ThreadPoolExecutor(3,10,60, TimeUnit.SECONDS,new ArrayBlockingQueue<Runnable>(10),new ThreadPoolExecutor.DiscardPolicy());
return new AsyncEventBus(threadPoolExecutor);
}
}
三、添加事件處理監聽器
import com.google.common.eventbus.AsyncEventBus;
import com.google.common.eventbus.Subscribe;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import javax.annotation.PostConstruct;
/**
* 異步監聽處理器
*/
@Component
public class AsyncEventListener {
/**
* 日誌
*/
private final static Logger logger = LoggerFactory.getLogger(AsyncEventListener.class);
@Autowired
private AsyncEventBus asyncEventBus;
@Autowired
private ILoginLogService loginLogService;
/**
* 註冊這個監聽器
*/
@PostConstruct
public void register(){
asyncEventBus.register(this);
}
/**
* 具體業務處理(此處比如向庫中添加登錄日誌)
* sysLoginLogPO: 登錄日誌表對應實體(替換成自己的傳參實體即可)
*/
@Subscribe
public void addLoginLog(SysLoginLogPO sysLoginLogPO) {
logger.info("添加登錄日誌:sysLoginLogPO=" + sysLoginLogPO);
// 執行具體添加日誌操作
loginLogService.insert(sysLoginLogPO);
}
/**
* 其他需要異步的業務方法
*/
@Subscribe
public void XXX(XXXXPO xxxxpoPO) {
logger.info("日誌:xxxxpoPO=" + xxxxpoPO);
// 執行具體添加日誌操作 TODO
}
}
四、業務層調用
@Autowired
private AsyncEventBus asyncEventBus;
/**
* 業務處理方法(業務封裝)
*/
public void doAddLoginLog(){
SysLoginLogPO sysLoginLogPO = new SysLoginLogPO();
// 提交異步處理, 會執行AsyncEventListener中的 addLoginLog 方法,根據參數類型匹配
asyncEventBus.post(sysLoginLogPO);
}
五、guava同spring集成
可以參考 https://blog.csdn.net/yxp20092010/article/details/46537333
注意:上面鏈接的這個文章實現出來的是默認的同步,如果需求要使用異步,那麼參考如下修改:
EventBusAdapter extends EventBus 一定要改爲繼承 AsyncEventBus 類,
然後添加一個構造方法,如下:
public class EventBusAdapter extends AsyncEventBus implements InitializingBean {
private List<EventAbstract> eventBusListener;
// 默認構造方法
public EventBusAdapter (Executor executor, List<EventAbstract> eventBusListener) {
super(executor);
this.eventBusListener = eventBusListener;
}
@Override
public void afterPropertiesSet() throws Exception {
for(EventAbstract eventAbstract : eventBusListener){
this.register(eventAbstract);
}
}
}
spring配置修改:
<!-- spring thread pool executor -->
<bean id="taskExecutor" class="org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor">
<!-- 線程池維護線程的最少數量 -->
<property name="corePoolSize" value="5" />
<!-- 允許的空閒時間 -->
<property name="keepAliveSeconds" value="200" />
<!-- 線程池維護線程的最大數量 -->
<property name="maxPoolSize" value="10" />
<!-- 緩存隊列 -->
<property name="queueCapacity" value="20" />
<!-- 對拒絕task的處理策略 -->
<property name="rejectedExecutionHandler">
<bean class="java.util.concurrent.ThreadPoolExecutor$CallerRunsPolicy" />
</property>
</bean>
<!-- EventBusListener 定義 -->
<util:list id="eventBusListener" value-type="com.qyou.EventAbstract">
<bean class="com.qyou.SendFailMailHandler "/>
<bean class="com.qyou.SendSuccessSMSHandler "/>
</util:list>
<!-- EventBusAdapter適配器 -->
<bean id="eventBusAdapter" class="com.qyou..EventBusAdapter">
<constructor-arg name="eventBusListener" ref="eventBusListener"/>
<constructor-arg name="executor" ref="taskExecutor"/>
</bean>