在 servlet 中,上下文是应用程序上下文,这就是您放松对话范围的原因。这是一个小型实用程序类,如果您希望 servlet 中的对话范围支持,您可以将其用作匿名类并包装请求...
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import org.jboss.weld.Container;
import org.jboss.weld.context.ContextLifecycle;
import org.jboss.weld.context.ConversationContext;
import org.jboss.weld.servlet.ConversationBeanStore;
public abstract class ConversationalHttpRequest {
protected HttpServletRequest request;
public ConversationalHttpRequest(HttpServletRequest request) {
this.request = request;
}
public abstract void process() throws Exception;
public void run() throws ServletException {
try {
initConversationContext();
process();
} catch (Exception e) {
throw new ServletException("Error processing conversational request", e);
} finally {
cleanupConversationContext();
}
}
private void initConversationContext() {
ConversationContext conversationContext = Container.instance().deploymentServices().get(ContextLifecycle.class).getConversationContext();
conversationContext.setBeanStore(new ConversationBeanStore(request.getSession(), request.getParameter("cid")));
conversationContext.setActive(true);
}
private void cleanupConversationContext() {
ConversationContext conversationContext = Container.instance().deploymentServices().get(ContextLifecycle.class).getConversationContext();
conversationContext.setBeanStore(null);
conversationContext.setActive(false);
}
}