springboot整合线程池最佳实践，赶紧学起来！

<>封装ThreadPoolTaskExecutor线程池

<>1、新增application.yml配置

这里主要是配置ThreadPoolTastExecutor比较重要的参数
thread: poolexecutor: corePoolSize: 10 # 核心线程数量 maxPoolSize: 30 # 最大线程数量
queueCapacity: 100 # 队列长度 keppAliveSeconds: 60 # 存活时间 prefixName:
"taskExecutor-" # 线程名称前缀
<>2、properties类

这个是为了简化代码，不用@Value一个一个去获取值
package com.walker.async.common.properties; import lombok.Data; import org.
springframework.boot.context.properties.ConfigurationProperties; import org.
springframework.stereotype.Component; @Component @Data @ConfigurationProperties(
prefix= "thread.poolexecutor") public class ThreadPoolProperties { private
Integer corePoolSize; private Integer maxPoolSize; private Integer queueCapacity
; private Integer keppAliveSeconds; private String prefixName; }
<>3、配置类

配置线程池，并将其注入到bean中
package com.walker.async.common.config; import com.walker.async.common.
properties.ThreadPoolProperties; import org.springframework.beans.factory.
annotation.Autowired; import org.springframework.context.annotation.Bean; import
org.springframework.context.annotation.Configuration; import org.springframework
.scheduling.annotation.EnableAsync; import org.springframework.scheduling.
concurrent.ThreadPoolTaskExecutor; import java.util.concurrent.Executor; import
java.util.concurrent.ThreadPoolExecutor; //开启异步 @EnableAsync //配置类
@Configuration public class ThreadPoolConfig { @Autowired private
ThreadPoolProperties threadPoolProperties; //bean名称 @Bean("taskExecutor") public
Executor taskExecutor() { ThreadPoolTaskExecutor executor = new
ThreadPoolTaskExecutor(); executor.setCorePoolSize(threadPoolProperties.
getCorePoolSize()); executor.setMaxPoolSize(threadPoolProperties.getMaxPoolSize(
)); executor.setQueueCapacity(threadPoolProperties.getQueueCapacity()); executor
.setKeepAliveSeconds(threadPoolProperties.getKeppAliveSeconds()); executor.
setThreadNamePrefix(threadPoolProperties.getPrefixName()); //设置线程池关闭的时候
等待所有的任务完成后再继续销毁其他的bean executor.setWaitForTasksToCompleteOnShutdown(true); //策略
executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
return executor; } }
<>4、封装Service和service实现类,方便管理
package com.walker.async.service.async; public interface TestAsync { void
doAsync(); } package com.walker.async.service.async.impl; import com.walker.
async.service.async.TestAsync; import lombok.extern.slf4j.Slf4j; import org.
springframework.scheduling.annotation.Async; import org.springframework.
stereotype.Service; @Service @Slf4j public class TestAsyncImpl implements
TestAsync { @Override //使用@Async，并将前面的注册的bean，填写到Async的value中 @Async(
"taskExecutor") public void doAsync() { log.info("== async start=="); log.info(
"线程{}执行代码逻辑",Thread.currentThread().getName()); log.info("== async end=="); } }
<>5、测试
package com.walker.async; import com.walker.async.service.async.TestAsync;
import org.junit.jupiter.api.Test; import org.springframework.beans.factory.
annotation.Autowired; import org.springframework.boot.test.context.
SpringBootTest; @SpringBootTest public class AsyncTest { //引用类 @Autowired
private TestAsync testAsync; @Test void test(){ for (int i = 0; i < 10; i++) {
testAsync.doAsync(); } } }
返回结果：
2023-01-29 16:47:12.491 INFO 13332 --- [ taskExecutor-2] c.w.a.service.async.
impl.TestAsyncImpl : == async start== 2023-01-29 16:47:12.491 INFO 13332 --- [
taskExecutor-1] c.w.a.service.async.impl.TestAsyncImpl : == async start== 2023-
01-29 16:47:12.493 INFO 13332 --- [ taskExecutor-4] c.w.a.service.async.impl.
TestAsyncImpl : == async start== 2023-01-29 16:47:12.493 INFO 13332 --- [
taskExecutor-3] c.w.a.service.async.impl.TestAsyncImpl : == async start== 2023-
01-29 16:47:12.493 INFO 13332 --- [ taskExecutor-5] c.w.a.service.async.impl.
TestAsyncImpl : == async start== 2023-01-29 16:47:12.501 INFO 13332 --- [
taskExecutor-9] c.w.a.service.async.impl.TestAsyncImpl : == async start== 2023-
01-29 16:47:12.501 INFO 13332 --- [taskExecutor-10] c.w.a.service.async.impl.
TestAsyncImpl : == async start== 2023-01-29 16:47:12.500 INFO 13332 --- [
taskExecutor-7] c.w.a.service.async.impl.TestAsyncImpl : == async start== 2023-
01-29 16:47:12.502 INFO 13332 --- [ taskExecutor-8] c.w.a.service.async.impl.
TestAsyncImpl : == async start== 2023-01-29 16:47:12.500 INFO 13332 --- [
taskExecutor-6] c.w.a.service.async.impl.TestAsyncImpl : == async start== 2023-
01-29 16:47:12.502 INFO 13332 --- [ taskExecutor-6] c.w.a.service.async.impl.
TestAsyncImpl : 线程taskExecutor-6执行代码逻辑 2023-01-29 16:47:12.501 INFO 13332 --- [
taskExecutor-5] c.w.a.service.async.impl.TestAsyncImpl : 线程taskExecutor-5执行代码逻辑
2023-01-29 16:47:12.503 INFO 13332 --- [ taskExecutor-5] c.w.a.service.async.
impl.TestAsyncImpl : == async end== 2023-01-29 16:47:12.492 INFO 13332 --- [
taskExecutor-2] c.w.a.service.async.impl.TestAsyncImpl : 线程taskExecutor-2执行代码逻辑
2023-01-29 16:47:12.503 INFO 13332 --- [ taskExecutor-2] c.w.a.service.async.
impl.TestAsyncImpl : == async end== 2023-01-29 16:47:12.503 INFO 13332 --- [
taskExecutor-6] c.w.a.service.async.impl.TestAsyncImpl : == async end== 2023-01-
29 16:47:12.501 INFO 13332 --- [ taskExecutor-9] c.w.a.service.async.impl.
TestAsyncImpl : 线程taskExecutor-9执行代码逻辑 2023-01-29 16:47:12.492 INFO 13332 --- [
taskExecutor-1] c.w.a.service.async.impl.TestAsyncImpl : 线程taskExecutor-1执行代码逻辑
2023-01-29 16:47:12.506 INFO 13332 --- [ taskExecutor-1] c.w.a.service.async.
impl.TestAsyncImpl : == async end== 2023-01-29 16:47:12.506 INFO 13332 --- [
taskExecutor-9] c.w.a.service.async.impl.TestAsyncImpl : == async end== 2023-01-
29 16:47:12.493 INFO 13332 --- [ taskExecutor-3] c.w.a.service.async.impl.
TestAsyncImpl : 线程taskExecutor-3执行代码逻辑 2023-01-29 16:47:12.501 INFO 13332 --- [
taskExecutor-10] c.w.a.service.async.impl.TestAsyncImpl : 线程taskExecutor-10
执行代码逻辑2023-01-29 16:47:12.506 INFO 13332 --- [ taskExecutor-3] c.w.a.service.
async.impl.TestAsyncImpl : == async end== 2023-01-29 16:47:12.506 INFO 13332 ---
[taskExecutor-10] c.w.a.service.async.impl.TestAsyncImpl : == async end== 2023-
01-29 16:47:12.502 INFO 13332 --- [ taskExecutor-8] c.w.a.service.async.impl.
TestAsyncImpl : 线程taskExecutor-8执行代码逻辑 2023-01-29 16:47:12.506 INFO 13332 --- [
taskExecutor-8] c.w.a.service.async.impl.TestAsyncImpl : == async end== 2023-01-
29 16:47:12.502 INFO 13332 --- [ taskExecutor-7] c.w.a.service.async.impl.
TestAsyncImpl : 线程taskExecutor-7执行代码逻辑 2023-01-29 16:47:12.508 INFO 13332 --- [
taskExecutor-7] c.w.a.service.async.impl.TestAsyncImpl : == async end== 2023-01-
29 16:47:12.493 INFO 13332 --- [ taskExecutor-4] c.w.a.service.async.impl.
TestAsyncImpl : 线程taskExecutor-4执行代码逻辑 2023-01-29 16:47:12.508 INFO 13332 --- [
taskExecutor-4] c.w.a.service.async.impl.TestAsyncImpl : == async end==
可以发现，该方法使用了线程池.

<>6、打印线程池情况（自主选择）

* 编写ThreadPoolTaskExecutor继承类 package com.walker.async.common.config; import
lombok.extern.slf4j.Slf4j; import org.springframework.scheduling.concurrent.
ThreadPoolTaskExecutor; import org.springframework.util.concurrent.
ListenableFuture; import java.util.concurrent.Callable; import java.util.
concurrent.Future; import java.util.concurrent.ThreadPoolExecutor; @Slf4j
//1、继承ThreadPoolTaskExecutor public class VisibleThreadPoolTaskExecutor extends
ThreadPoolTaskExecutor { //2、编写打印线程池方法 private void log(String method){
ThreadPoolExecutor threadPoolExecutor = getThreadPoolExecutor(); if(
threadPoolExecutor==null){ return; } log.info("线程池：{}, 执行方法：{},任务数量 [{}],
完成任务数量 [{}], 活跃线程数 [{}], 队列长度 [{}]", this.getThreadNamePrefix(), method,
threadPoolExecutor.getTaskCount(), threadPoolExecutor.getCompletedTaskCount(),
threadPoolExecutor.getActiveCount(), threadPoolExecutor.getQueue().size()); }
//3、重写方法，进行日志的记录 @Override public void execute(Runnable task) { log("execute");
super.execute(task); } @Override public void execute(Runnable task, long
startTimeout) { log("execute"); super.execute(task, startTimeout); } @Override
public Future<?> submit(Runnable task) { log("submit"); return super.submit(task
); } @Override public <T> Future<T> submit(Callable<T> task) { log("submit");
return super.submit(task); } @Override public ListenableFuture<?>
submitListenable(Runnable task) { log("submitListenable"); return super.
submitListenable(task); } @Override public <T> ListenableFuture<T>
submitListenable(Callable<T> task) { log("submitListenable"); return super.
submitListenable(task); } }
* 重新编写线程池配置类 package com.walker.async.common.config; import com.walker.async.
common.properties.ThreadPoolProperties; import org.springframework.beans.factory
.annotation.Autowired; import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration; import org.
springframework.scheduling.annotation.EnableAsync; import org.springframework.
scheduling.concurrent.ThreadPoolTaskExecutor; import java.util.concurrent.
Executor; import java.util.concurrent.ThreadPoolExecutor; @EnableAsync
@Configuration public class ThreadPoolConfig { @Autowired private
ThreadPoolProperties threadPoolProperties; @Bean("taskExecutor") public Executor
taskExecutor() { ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
executor.setCorePoolSize(threadPoolProperties.getCorePoolSize()); executor.
setMaxPoolSize(threadPoolProperties.getMaxPoolSize()); executor.setQueueCapacity
(threadPoolProperties.getQueueCapacity()); executor.setKeepAliveSeconds(
threadPoolProperties.getKeppAliveSeconds()); executor.setThreadNamePrefix(
threadPoolProperties.getPrefixName()); //设置线程池关闭的时候 等待所有的任务完成后再继续销毁其他的bean
executor.setWaitForTasksToCompleteOnShutdown(true); //策略 executor.
setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy()); return
executor; } @Bean("visibleTaskExecutor") public Executor visible() {
//1、使用VisibleThreadPoolTaskExecutor作为类 ThreadPoolTaskExecutor executor = new
VisibleThreadPoolTaskExecutor(); executor.setCorePoolSize(threadPoolProperties.
getCorePoolSize()); executor.setMaxPoolSize(threadPoolProperties.getMaxPoolSize(
)); executor.setQueueCapacity(threadPoolProperties.getQueueCapacity()); executor
.setKeepAliveSeconds(threadPoolProperties.getKeppAliveSeconds()); executor.
setThreadNamePrefix(threadPoolProperties.getPrefixName()); //设置线程池关闭的时候
等待所有的任务完成后再继续销毁其他的bean executor.setWaitForTasksToCompleteOnShutdown(true); //策略
executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
return executor; } }
* service和实现类也重新编写 void visibleAsync(); /** * 可视化，可以打印线程池情况 */ @Override
@Async("visibleTaskExecutor") public void visibleAsync() { log.info("== async
start=="); log.info("线程{}执行代码逻辑",Thread.currentThread().getName()); log.info(
"== async end=="); }
* 测试 package com.walker.async; import com.walker.async.service.async.TestAsync
; import org.junit.jupiter.api.Test; import org.springframework.beans.factory.
annotation.Autowired; import org.springframework.boot.test.context.
SpringBootTest; @SpringBootTest public class AsyncTest { @Autowired private
TestAsync testAsync; @Test void test(){ for (int i = 0; i < 10; i++) { //
testAsync.doAsync(); testAsync.visibleAsync(); } } }
* 返回结果

每次执行的时候，都会打印对应的线程池情况了

• « 上一篇：【架构知多少】谈谈X86架构与ARM架构区别
• » 下一篇：JZ65 不用加减乘除做加法