怎么对 ThreadPoolExecutor 进行全局配置
时间: 2023-06-29 07:12:55 浏览: 70
可以通过创建一个全局的线程池工厂类,来对ThreadPoolExecutor进行全局配置。具体步骤如下:
1. 创建一个线程池工厂类,例如GlobalThreadPoolFactory。
2. 在GlobalThreadPoolFactory类中,定义静态变量,用于存储线程池的核心线程数、最大线程数、空闲线程存活时间等参数,并提供对应的静态方法,用于获取和设置这些参数值。
3. 在GlobalThreadPoolFactory类中,创建一个静态方法getThreadPoolExecutor,用于返回一个全局共享的ThreadPoolExecutor实例。该方法中可以根据之前定义的参数,构造ThreadPoolExecutor实例,从而实现全局配置。
下面是一个示例代码:
```
public class GlobalThreadPoolFactory {
private static int corePoolSize = 10;
private static int maxPoolSize = 100;
private static int keepAliveTime = 60;
public static int getCorePoolSize() {
return corePoolSize;
}
public static void setCorePoolSize(int corePoolSize) {
GlobalThreadPoolFactory.corePoolSize = corePoolSize;
}
public static int getMaxPoolSize() {
return maxPoolSize;
}
public static void setMaxPoolSize(int maxPoolSize) {
GlobalThreadPoolFactory.maxPoolSize = maxPoolSize;
}
public static int getKeepAliveTime() {
return keepAliveTime;
}
public static void setKeepAliveTime(int keepAliveTime) {
GlobalThreadPoolFactory.keepAliveTime = keepAliveTime;
}
public static ThreadPoolExecutor getThreadPoolExecutor() {
return new ThreadPoolExecutor(
corePoolSize,
maxPoolSize,
keepAliveTime,
TimeUnit.SECONDS,
new LinkedBlockingQueue<>());
}
}
```
在代码中,可以通过调用GlobalThreadPoolFactory类的静态方法来获取和设置线程池的参数,例如:
```
GlobalThreadPoolFactory.setCorePoolSize(20);
GlobalThreadPoolFactory.setMaxPoolSize(200);
GlobalThreadPoolFactory.setKeepAliveTime(120);
ThreadPoolExecutor executor = GlobalThreadPoolFactory.getThreadPoolExecutor();
```
这样,在代码中创建线程池时,就会使用全局共享的ThreadPoolExecutor实例,从而实现了全局配置。