项目解析-spring异步线程池配置与使用

一、Spring配置

实际项目简单配置

<bean
        class="org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor">
        <property name="corePoolSize" value="10" />
        <property name="maxPoolSize" value="10" />
        <property name="queueCapacity" value="1000" />
    </bean>

较完整参考

<!-- 异步线程池 -->  
    <bean id="threadPool" class="org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor">  
      <!-- 核心线程数  -->  
      <property name="corePoolSize" value="3" />  
      <!-- 最大线程数 -->  
      <property name="maxPoolSize" value="20" />  
      <!-- 队列最大长度 >=mainExecutor.maxSize -->  
      <property name="queueCapacity" value="1000" />  
      <!-- 线程池维护线程所允许的空闲时间 -->  
      <property name="keepAliveSeconds" value="300" />  
      <!-- 线程池对拒绝任务(无线程可用)的处理策略 -->  
      <property name="rejectedExecutionHandler">  
        <bean class="java.util.concurrent.ThreadPoolExecutor$CallerRunsPolicy" />  
      </property>  
    </bean>

二、Service中注入

    @Autowired
    protected ThreadPoolTaskExecutor taskExecutor;

三、service中方法使用

项目中用来异步记log

public void doSomething(){
    threadPool.execute(new Runnable() {

            @Override
            public void run() {
                //异步执行耗时的业务任务
            }
        });
}

@Transactional
    public void logBomInfo(final int loggingKey, final String appId,
            final Object bom) {
        try {
            taskExecutor.execute(new Runnable() {
                @Override
                public void run() {
                    try {
                        LogBomInfo logBomInfo = new LogBomInfo();
                        logBomInfo.setBomInfoId(loggingKey);
                        logBomInfo.setAppId(appId);
                        logBomInfo.setBom(jsonMapper.writeValueAsString(bom));
                        logBomInfo.setBizkey(getBomBizKey(bom));
                        logBomInfoDAO.insertLogBomInfo(logBomInfo);
                        if (logger.isDebugEnabled()) {
                            logger.debug("保存日志成功, bomInfoId:" + loggingKey);
                        }
                    } catch (Exception ex) {
                        logger.error("保存日志发生错误", ex);
                    }
                }

            });
        } catch (Exception ex) {
            logger.error("写入日志表失败", ex);
        }
    }