springboot ThreadPoolTaskExecutor 配置,使用

springboot ThreadPoolTaskExecutor 配置,使用

resource文件夹下新建配置文件: executor.properties
文件内容:
# 异步线程配置
# 核心线程数
async.executor.thread.core_pool_size=5
# 最大线程数
async.executor.thread.max_pool_size=8
# 任务队列大小
async.executor.thread.queue_capacity=2
# 线程池中线程的名称前缀
async.executor.thread.name.prefix=async-service-
# 缓冲队列中线程的空闲时间
async.executor.thread.keep_alive_seconds=100

添加配置类:
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

import java.util.concurrent.ThreadPoolExecutor;

@Configuration
// @PropertySource是找的target目录下classes目录下的文件，resources目录下的文件编译后会生成在classes目录
@PropertySource(value = {"classpath:executor.properties"}, ignoreResourceNotFound=false, encoding="UTF-8")
@Slf4j
public class ExecutorConfig {

@Value("${async.executor.thread.core_pool_size}")
private int corePoolSize;
@Value("${async.executor.thread.max_pool_size}")
private int maxPoolSize;
@Value("${async.executor.thread.queue_capacity}")
private int queueCapacity;
@Value("${async.executor.thread.name.prefix}")
private String namePrefix;
@Value("${async.executor.thread.keep_alive_seconds}")
private int keepAliveSeconds;

@Bean(name = "asyncTaskExecutor")
public ThreadPoolTaskExecutor taskExecutor() {
log.info("启动");
ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
// 核心线程数
executor.setCorePoolSize(corePoolSize);
// 最大线程数
executor.setMaxPoolSize(maxPoolSize);
// 任务队列大小
executor.setQueueCapacity(queueCapacity);
// 线程前缀名
executor.setThreadNamePrefix(namePrefix);
// 线程的空闲时间
executor.setKeepAliveSeconds(keepAliveSeconds);
// 拒绝策略
executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
// 线程初始化
executor.initialize();
return executor;
}
}

代码中使用:
@Autowired
private ThreadPoolTaskExecutor taskExecutor;

taskExecutor.execute(() -> {
try {
System.out.println("***************你的异步任务写这里************");
} catch (Exception e) {
e.printStackTrace();
}