項目解析-spring異步線程池配置與使用

一、Spring配置

實際項目簡單配置

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

較完整參考

<!-- 異步線程池 -->  
    <bean id="threadPool" class="org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor">  
      <!-- 核心線程數  -->  
      <property name="corePoolSize" value="3" />  
      <!-- 最大線程數 -->  
      <property name="maxPoolSize" value="20" />  
      <!-- 隊列最大長度 >=mainExecutor.maxSize -->  
      <property name="queueCapacity" value="1000" />  
      <!-- 線程池維護線程所允許的空閒時間 -->  
      <property name="keepAliveSeconds" value="300" />  
      <!-- 線程池對拒絕任務(無線程可用)的處理策略 -->  
      <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

項目中用來異步記log

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

            @Override
            public void run() {
                //異步執行耗時的業務任務
            }
        });
}

@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("保存日誌成功, bomInfoId:" + loggingKey);
                        }
                    } catch (Exception ex) {
                        logger.error("保存日誌發生錯誤", ex);
                    }
                }

            });
        } catch (Exception ex) {
            logger.error("寫入日誌表失敗", ex);
        }
    }