spring定时任务.线程池,自定义多线程配置
2024-08-24 21:18:05
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;"><!--</span><span style="color: #008000;"> 定时 </span><span style="color: #008000;">--></span>
<span style="color: #0000ff;"><</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;">></span>
<span style="color: #0000ff;"><</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;">/></span>
<span style="color: #0000ff;"><</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;">/></span> <span style="color: #0000ff;"></</span><span style="color: #800000;">bean</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><</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;">></span>
<span style="color: #0000ff;"><</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;">/></span>
<span style="color: #008000;"><!--</span><span style="color: #008000;"> 每天凌晨一点执行 </span><span style="color: #008000;">--></span>
<span style="color: #0000ff;"><</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;">/></span>
<span style="color: #0000ff;"></</span><span style="color: #800000;">bean</span><span style="color: #0000ff;">></span> <span style="color: #008000;"><!--</span><span style="color: #008000;"> 定时 end </span><span style="color: #008000;">--></span> <span style="color: #0000ff;"><</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;">></span>
<span style="color: #0000ff;"><</span><span style="color: #800000;">property </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="jobDetails"</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><</span><span style="color: #800000;">list</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><</span><span style="color: #800000;">ref </span><span style="color: #ff0000;">bean</span><span style="color: #0000ff;">="ruleBean"</span> <span style="color: #0000ff;">/></span>
<span style="color: #0000ff;"></</span><span style="color: #800000;">list</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"></</span><span style="color: #800000;">property</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><</span><span style="color: #800000;">property </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="triggers"</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><</span><span style="color: #800000;">list</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"><</span><span style="color: #800000;">ref </span><span style="color: #ff0000;">bean</span><span style="color: #0000ff;">="rule"</span> <span style="color: #0000ff;">/></span>
<span style="color: #0000ff;"></</span><span style="color: #800000;">list</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"></</span><span style="color: #800000;">property</span><span style="color: #0000ff;">></span>
<span style="color: #008000;"><!--</span><span style="color: #008000;"> 启动时延期10秒开始任务 </span><span style="color: #008000;">--></span>
<span style="color: #0000ff;"><</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;">/></span>
<span style="color: #0000ff;"></</span><span style="color: #800000;">bean</span><span style="color: #0000ff;">></span> <span style="color: #008000;"><!--</span><span style="color: #008000;"> job end</span><span style="color: #008000;">--></span> <span style="color: #0000ff;"><</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;">></span>
<span style="color: #008000;"><!--</span><span style="color: #008000;"> 核心线程数，默认为1 </span><span style="color: #008000;">--></span>
<span style="color: #0000ff;"><</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;">/></span> <span style="color: #008000;"><!--</span><span style="color: #008000;"> 最大线程数，默认为Integer.MAX_VALUE </span><span style="color: #008000;">--></span>
<span style="color: #0000ff;"><</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;">/></span> <span style="color: #008000;"><!--</span><span style="color: #008000;"> 队列最大长度，一般需要设置值>=notifyScheduledMainExecutor.maxNum；默认为Integer.MAX_VALUE
<property name="queueCapacity" value="1000" /> </span><span style="color: #008000;">--></span> <span style="color: #008000;"><!--</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;">--></span>
<span style="color: #0000ff;"><</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;">/></span> <span style="color: #008000;"><!--</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;">--></span>
<span style="color: #0000ff;"><</span><span style="color: #800000;">property </span><span style="color: #ff0000;">name</span><span style="color: #0000ff;">="rejectedExecutionHandler"</span><span style="color: #0000ff;">></span>
<span style="color: #008000;"><!--</span><span style="color: #008000;"> AbortPolicy:直接抛出java.util.concurrent.RejectedExecutionException异常 </span><span style="color: #008000;">--></span>
<span style="color: #008000;"><!--</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;">--></span>
<span style="color: #008000;"><!--</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;">--></span>
<span style="color: #008000;"><!--</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;">--></span>
<span style="color: #0000ff;"><</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;">/></span>
<span style="color: #0000ff;"></</span><span style="color: #800000;">property</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"></</span><span style="color: #800000;">bean</span><span style="color: #0000ff;">></span> <span style="color: #0000ff;"><</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;">></</span><span style="color: #800000;">bean</span><span style="color: #0000ff;">></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<String><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)));
}}
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