JBoss启动时通过Seam组件来启用线程

JBoss启动时通过Seam组件来启用线程

 

 

样例代码,代码中组件注释说明在下面：

 

import static org.jboss.seam.annotations.Install.BUILT_IN;
import org.jboss.seam.ScopeType;
import org.jboss.seam.annotations.Create;
import org.jboss.seam.annotations.Install;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Scope;
import org.jboss.seam.annotations.Startup;
import org.jboss.seam.annotations.intercept.BypassInterceptors;

@Name("threadAction")
@Scope(ScopeType.APPLICATION)
@BypassInterceptors
@Install(precedence = BUILT_IN)
@Startup
public class ThreadAction {
 
	@Create
	public void create() {
		// Start Thread Run
		Thread t1 = new Thread(new DoSomething());
		t1.start();       
	}

	class DoSomething implements Runnable {
		@Override
		public void run() {
			while (true) {
				System.out.println("Thread Run...");
				try {
					Thread.sleep(1000);
				} catch (Exception e) {
				}
			}
		}
	}
}

 

 

1.  @Startup注释用来指定Seam组件当环境中某个APPLICATION or SESSION被实例化时，立即实例化组件

Specifies that an instance of this component is created at system initialization time for an application scoped component, or when a session is started for a session scoped component. May only be applied to APPLICATION or SESSION scoped components.

 

2.  @Install(precedence=BUILT_IN)注释指定组件安装的优先级别

指定组件的优先级别。如果具有相同名字的多个组件存在，具有高优先级才被安装，

定义的优先级别是

BUILT_IN：所有内置的Seam组件的优先级别

FRAMEWORK:用于扩展Seam的框架组件的优先级别

APPLICATION：应用程序的组件优先级别（默认优先级）

DEPLOYMENT：在特定部署中重载应用程序组件的组件优先级别

MOCK：在测试时MOCK对象使用的优先级别

 

3.  @Create当组件被Seam初始化时，该方法被调用

 

4.  @BypassInterceptors取消在特定组件或一个组件方法上的所有拦截器