使用Weld-SE 2.1.2.Final获取bean并从线程调用它时,我遇到以下异常:
线程中的异常" main" org.jboss.weld.context.ContextNotActiveException:WELD-001303:范围类型javax.enterprise.context.RequestScoped没有活动的上下文
我的bean使用@RequestScooped注释。如果我注释@ApplicationScoped然后它工作正常,但我需要保留@RequestScooped。
这是一个复制者:
public static void main(String[] args) throws Exception {
Weld weld = new Weld();
WeldContainer container = weld.initialize();
final MyPojo pojo = container.instance().select(MyPojo.class).get();
Thread t = new Thread() {
public void run() {
System.out.println(pojo.ping()); // This call fails
}
};
t.start();
t.join();
System.out.println(pojo.ping()); // This call succeed
weld.shutdown();
}
@RequestScoped
public class MyPojo {
public String ping() {
return "pong";
}
}
你遇到过这种行为吗?有什么想让这个工作好吗?
答案 0 :(得分:20)
在这种情况下,Weld使用与线程(RequestContext)关联的未绑定RequestContext。您需要在您正在创建的线程中手动初始化新的RequestContext,这对我有用:
public static void main(String[] args) throws Exception {
Weld weld = new Weld();
final WeldContainer container = weld.initialize();
RequestContext requestContext= container.instance().select(RequestContext.class, UnboundLiteral.INSTANCE).get();
requestContext.activate();
final MyPojo pojo = container.instance().select(MyPojo.class).get();
Thread t = new Thread() {
public void run() {
RequestContext requestContext= container.instance().select(RequestContext.class, UnboundLiteral.INSTANCE).get();
requestContext.activate();
System.out.println("1" + pojo.ping());
}
};
t.start();
t.join();
System.out.println("2" + pojo.ping());
weld.shutdown();
}