spring定时任务.线程池,自定义多线程配置

定时任务及多线程配置xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context-4.0.xsd
       http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
       "> 
    <!--  job start-->
<span style="color: #008000;">&lt;!--</span><span style="color: #008000;"> 定时 </span><span style="color: #008000;">--&gt;</span>
<span style="color: #0000ff;">&lt;</span><span style="color: #800000;">bean </span><span style="color: #ff0000;">id</span><span style="color: #0000ff;">="ruleBean"</span><span style="color: #ff0000;">
    class</span><span style="color: #0000ff;">="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean"</span><span style="color: #0000ff;">&gt;</span>
    <span style="color: #0000ff;">&lt;</span><span style="color: #800000;">property </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="targetObject"</span><span style="color: #ff0000;"> ref</span><span style="color: #0000ff;">="ruleService"</span> <span style="color: #0000ff;">/&gt;</span>
    <span style="color: #0000ff;">&lt;</span><span style="color: #800000;">property </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="targetMethod"</span><span style="color: #ff0000;"> value</span><span style="color: #0000ff;">="updateRule"</span> <span style="color: #0000ff;">/&gt;</span>
     
 <span style="color: #0000ff;">&lt;/</span><span style="color: #800000;">bean</span><span style="color: #0000ff;">&gt;</span> 

<span style="color: #0000ff;">&lt;</span><span style="color: #800000;">bean </span><span style="color: #ff0000;">id</span><span style="color: #0000ff;">="rule"</span><span style="color: #ff0000;"> class</span><span style="color: #0000ff;">="org.springframework.scheduling.quartz.CronTriggerFactoryBean"</span><span style="color: #0000ff;">&gt;</span>
    <span style="color: #0000ff;">&lt;</span><span style="color: #800000;">property </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="jobDetail"</span><span style="color: #ff0000;"> ref</span><span style="color: #0000ff;">="ruleBean"</span> <span style="color: #0000ff;">/&gt;</span>
    <span style="color: #008000;">&lt;!--</span><span style="color: #008000;"> 每天凌晨一点执行 </span><span style="color: #008000;">--&gt;</span>
    <span style="color: #0000ff;">&lt;</span><span style="color: #800000;">property </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="cronExpression"</span><span style="color: #ff0000;"> value</span><span style="color: #0000ff;">="0 0 1 * * ?"</span><span style="color: #0000ff;">/&gt;</span>
<span style="color: #0000ff;">&lt;/</span><span style="color: #800000;">bean</span><span style="color: #0000ff;">&gt;</span>

<span style="color: #008000;">&lt;!--</span><span style="color: #008000;"> 定时 end </span><span style="color: #008000;">--&gt;</span>

<span style="color: #0000ff;">&lt;</span><span style="color: #800000;">bean </span><span style="color: #ff0000;">id</span><span style="color: #0000ff;">="startQuertz"</span><span style="color: #ff0000;"> lazy-init</span><span style="color: #0000ff;">="false"</span><span style="color: #ff0000;"> autowire</span><span style="color: #0000ff;">="no"</span><span style="color: #ff0000;">
    class</span><span style="color: #0000ff;">="org.springframework.scheduling.quartz.SchedulerFactoryBean"</span><span style="color: #0000ff;">&gt;</span>
     <span style="color: #0000ff;">&lt;</span><span style="color: #800000;">property </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="jobDetails"</span><span style="color: #0000ff;">&gt;</span>
      <span style="color: #0000ff;">&lt;</span><span style="color: #800000;">list</span><span style="color: #0000ff;">&gt;</span>
        <span style="color: #0000ff;">&lt;</span><span style="color: #800000;">ref </span><span style="color: #ff0000;">bean</span><span style="color: #0000ff;">="ruleBean"</span> <span style="color: #0000ff;">/&gt;</span>
      <span style="color: #0000ff;">&lt;/</span><span style="color: #800000;">list</span><span style="color: #0000ff;">&gt;</span>
    <span style="color: #0000ff;">&lt;/</span><span style="color: #800000;">property</span><span style="color: #0000ff;">&gt;</span>

    <span style="color: #0000ff;">&lt;</span><span style="color: #800000;">property </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="triggers"</span><span style="color: #0000ff;">&gt;</span>
      <span style="color: #0000ff;">&lt;</span><span style="color: #800000;">list</span><span style="color: #0000ff;">&gt;</span>
         <span style="color: #0000ff;">&lt;</span><span style="color: #800000;">ref </span><span style="color: #ff0000;">bean</span><span style="color: #0000ff;">="rule"</span> <span style="color: #0000ff;">/&gt;</span>
      <span style="color: #0000ff;">&lt;/</span><span style="color: #800000;">list</span><span style="color: #0000ff;">&gt;</span>
    <span style="color: #0000ff;">&lt;/</span><span style="color: #800000;">property</span><span style="color: #0000ff;">&gt;</span>
    <span style="color: #008000;">&lt;!--</span><span style="color: #008000;"> 启动时延期10秒开始任务 </span><span style="color: #008000;">--&gt;</span>
    <span style="color: #0000ff;">&lt;</span><span style="color: #800000;">property </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="startupDelay"</span><span style="color: #ff0000;"> value</span><span style="color: #0000ff;">="10"</span> <span style="color: #0000ff;">/&gt;</span>
<span style="color: #0000ff;">&lt;/</span><span style="color: #800000;">bean</span><span style="color: #0000ff;">&gt;</span>

<span style="color: #008000;">&lt;!--</span><span style="color: #008000;">  job end</span><span style="color: #008000;">--&gt;</span>

<span style="color: #0000ff;">&lt;</span><span style="color: #800000;">bean </span><span style="color: #ff0000;">id</span><span style="color: #0000ff;">="threadPoolTaskExecutor"</span><span style="color: #ff0000;">
  class</span><span style="color: #0000ff;">="org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor"</span><span style="color: #0000ff;">&gt;</span>
  <span style="color: #008000;">&lt;!--</span><span style="color: #008000;"> 核心线程数，默认为1 </span><span style="color: #008000;">--&gt;</span>
  <span style="color: #0000ff;">&lt;</span><span style="color: #800000;">property </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="corePoolSize"</span><span style="color: #ff0000;"> value</span><span style="color: #0000ff;">="1"</span> <span style="color: #0000ff;">/&gt;</span>

  <span style="color: #008000;">&lt;!--</span><span style="color: #008000;"> 最大线程数，默认为Integer.MAX_VALUE </span><span style="color: #008000;">--&gt;</span>
  <span style="color: #0000ff;">&lt;</span><span style="color: #800000;">property </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="maxPoolSize"</span><span style="color: #ff0000;"> value</span><span style="color: #0000ff;">="10"</span> <span style="color: #0000ff;">/&gt;</span>

  <span style="color: #008000;">&lt;!--</span><span style="color: #008000;"> 队列最大长度，一般需要设置值&gt;=notifyScheduledMainExecutor.maxNum；默认为Integer.MAX_VALUE
      &lt;property name="queueCapacity" value="1000" /&gt; </span><span style="color: #008000;">--&gt;</span>

  <span style="color: #008000;">&lt;!--</span><span style="color: #008000;"> 线程池维护线程所允许的空闲时间，默认为60s </span><span style="color: #008000;">--&gt;</span>
  <span style="color: #0000ff;">&lt;</span><span style="color: #800000;">property </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="keepAliveSeconds"</span><span style="color: #ff0000;"> value</span><span style="color: #0000ff;">="300"</span> <span style="color: #0000ff;">/&gt;</span>

  <span style="color: #008000;">&lt;!--</span><span style="color: #008000;"> 线程池对拒绝任务（无线程可用）的处理策略，目前只支持AbortPolicy、CallerRunsPolicy；默认为后者 </span><span style="color: #008000;">--&gt;</span>
  <span style="color: #0000ff;">&lt;</span><span style="color: #800000;">property </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="rejectedExecutionHandler"</span><span style="color: #0000ff;">&gt;</span>
      <span style="color: #008000;">&lt;!--</span><span style="color: #008000;"> AbortPolicy:直接抛出java.util.concurrent.RejectedExecutionException异常 </span><span style="color: #008000;">--&gt;</span>
      <span style="color: #008000;">&lt;!--</span><span style="color: #008000;"> CallerRunsPolicy:主线程直接执行该任务，执行完之后尝试添加下一个任务到线程池中，可以有效降低向线程池内添加任务的速度 </span><span style="color: #008000;">--&gt;</span>
      <span style="color: #008000;">&lt;!--</span><span style="color: #008000;"> DiscardOldestPolicy:抛弃旧的任务、暂不支持；会导致被丢弃的任务无法再次被执行 </span><span style="color: #008000;">--&gt;</span>
      <span style="color: #008000;">&lt;!--</span><span style="color: #008000;"> DiscardPolicy:抛弃当前任务、暂不支持；会导致被丢弃的任务无法再次被执行 </span><span style="color: #008000;">--&gt;</span>
      <span style="color: #0000ff;">&lt;</span><span style="color: #800000;">bean </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="java.util.concurrent.ThreadPoolExecutor$CallerRunsPolicy"</span> <span style="color: #0000ff;">/&gt;</span>
  <span style="color: #0000ff;">&lt;/</span><span style="color: #800000;">property</span><span style="color: #0000ff;">&gt;</span>
<span style="color: #0000ff;">&lt;/</span><span style="color: #800000;">bean</span><span style="color: #0000ff;">&gt;</span>

<span style="color: #0000ff;">&lt;</span><span style="color: #800000;">bean </span><span style="color: #ff0000;">id</span><span style="color: #0000ff;">="contextUtil"</span><span style="color: #ff0000;"> class</span><span style="color: #0000ff;">="com.mythopoet.util.ContextUtil"</span><span style="color: #0000ff;">&gt;&lt;/</span><span style="color: #800000;">bean</span><span style="color: #0000ff;">&gt;</span>

</beans>

定时任务JAVA类

RuleService.java

@Service
public class RuleService {
    public void updateRule(){
  System.out.println(</span>"定时任务启动"<span style="color: #000000;">);

}

}

多线程配置

StartTaskThread.java

public class StartTaskThread implements Runnable {
     private List<String> list;
</span><span style="color: #0000ff;">public</span> StartTaskThread(List&lt;String&gt;<span style="color: #000000;"> list) {
   </span><span style="color: #0000ff;">this</span>.list=<span style="color: #000000;"> list;
}
@Override
</span><span style="color: #0000ff;">public</span> <span style="color: #0000ff;">synchronized</span> <span style="color: #0000ff;">void</span><span style="color: #000000;"> run() {
       System.out.println(list.size());
}

}

修改定时任务类，分配数据，并发布到各个线程里。

RuleService.java

@Service
public class RuleService {
</span><span style="color: #0000ff;">public</span> <span style="color: #0000ff;">void</span><span style="color: #000000;"> updateRule(){</span></pre>

        int nums = 5;//开启5线程
        List<String> strList= new ArrayList<String>();
        for (int i = 0; i < 2000; i++) {
            strList.add("test"+i);
        }
        Map<Integer, List<String>> map = new HashMap<Integer, List<String>>();
        for (int i = 0; i < nums; i++) {
            List<String> list = new ArrayList<String>();
            map.put(i, list);
        }
        int st = 0; //起点
        int avg = strList.size()/nums; //平均值
        int count =0;//记录值
        
        for (int i = 0; i < nums; i++) {
            if(i==nums-1){
                for (int j = count; j <strList.size(); j++) {
                    map.get(i).add(strList.get(j));
                    count++;
                }
                new Thread(new StartTaskThread(map.get(i)).start();
                break;
            }
            for (int j = st; j <(st+avg); j++) {
                map.get(i).add(strList.get(j));
                count++;
            }
            st=st+avg;
            new Thread(new StartTaskThread(map.get(i)).start();
 } }

取线程配置工具类,如果线程内需要操作DAO 则需要主动获取spring注入的DAO类的Bean

ContextUtil.java

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
public class ContextUtil implements ApplicationContextAware{
</span><span style="color: #0000ff;">private</span> <span style="color: #0000ff;">static</span><span style="color: #000000;"> ApplicationContext context;

@Override
</span><span style="color: #0000ff;">public</span> <span style="color: #0000ff;">void</span><span style="color: #000000;"> setApplicationContext(ApplicationContext applicationContext)
        </span><span style="color: #0000ff;">throws</span><span style="color: #000000;"> BeansException {
    context </span>=<span style="color: #000000;"> applicationContext;
}

</span><span style="color: #0000ff;">public</span> <span style="color: #0000ff;">static</span><span style="color: #000000;"> ApplicationContext getContext(){
    </span><span style="color: #0000ff;">return</span><span style="color: #000000;"> context;
}

</span><span style="color: #0000ff;">public</span> <span style="color: #0000ff;">static</span><span style="color: #000000;"> Object getBean(String beanName) {
    </span><span style="color: #0000ff;">return</span><span style="color: #000000;"> context.getBean(beanName);
}

}

获取dao写法

RuleDAO ruleDAO =(RuleDAO) ContextUtil.getBean("ruleDAO");
                

使用线程池

StartTaskThread2.java

public class StartTaskThread implements Runnable {
     private String st;
public StartTaskThread(String<span> st) {
   this.st=<span> st;
}
@Override
public void<span> run() {
       System.out.println(st);
}

}

线程池

RuleService2.java

@Service
public class RuleService {
public void<span> updateRule(){<br><br></span></span></span>        ThreadPoolTaskExecutor tpte =(ThreadPoolTaskExecutor)ContextUtil.getBean("threadPoolTaskExecutor");</pre>

        List<String> strList= new ArrayList<String>();
        for (int i = 0; i < 2000; i++) {
            strList.add("test"+i);
        }
        

        for (int i = 0; i < strList.size(); i++) {
            tpte.execute(new StartTaskThread2(strList.get(i)));
        }
}