在尝试使用事件总线通过测试类测试 Vert.x Verticle时，我遇到了“阻塞错误”。这里是垂直和测试类：
EventBusReceiverVerticle：
public class EventBusReceiverVerticle extends AbstractVerticle {
public EventBusReceiverVerticle(String name) {
this.name = name;
}
public void start() {
vertx.eventBus().consumer("geo-service", (Message<JsonObject> handler) -> {
{
try {
System.out.println("sleep 10 seconds");
Thread.sleep(10000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
});
}
}
测试类：
@RunWith(VertxUnitRunner.class)
public class MyFirstVerticleTest {
Vertx vertx;
EventBus eb;
private static final Logger logger = LoggerFactory.getLogger(MyFirstVerticleTest.class);
@Before
public void setUp(TestContext context) {
logger.info("@Before");
vertx = Vertx.vertx();
eb = vertx.eventBus();
Async async = context.async();
vertx.deployVerticle(new EventBusReceiverVerticle("R1"), res -> {
if (res.succeeded()) {
async.complete();
} else {
context.fail();
}
});
}
@After
public void tearDown(TestContext context) {
logger.info("@After");
Async async = context.async();
vertx.close(event -> async.complete());
}
@Test
public void testEventBusVerticle(TestContext context) {
Async async = context.async();
JsonObject msg = new JsonObject("{\"action\":\"pos\"}");
eb.send("geo-service", msg, reply -> {
if (reply.succeeded()) {
async.complete();
} else {
context.fail();
}
});
async.complete();
}
}
控制台输出：
Sep 05, 2015 2:20:23 PM com.company.MyFirstVerticleTest
INFO: @Before
sleep 10 seconds
Sep 05, 2015 2:20:24 PM com.company.MyFirstVerticleTest
INFO: @After
Sep 05, 2015 2:20:27 PM io.vertx.core.impl.BlockedThreadChecker
WARNING: Thread Thread[vert.x-eventloop-thread-2,5,main] has been blocked for 2790 ms, time limit is 2000
Sep 05, 2015 2:20:28 PM io.vertx.core.impl.BlockedThreadChecker
WARNING: Thread Thread[vert.x-eventloop-thread-2,5,main] has been blocked for 3794 ms, time limit is 2000
Sep 05, 2015 2:20:29 PM io.vertx.core.impl.BlockedThreadChecker
WARNING: Thread Thread[vert.x-eventloop-thread-2,5,main] has been blocked for 4796 ms, time limit is 2000
Sep 05, 2015 2:20:30 PM io.vertx.core.impl.BlockedThreadChecker
WARNING: Thread Thread[vert.x-eventloop-thread-2,5,main] has been blocked for 5799 ms, time limit is 2000
io.vertx.core.VertxException: Thread blocked
at java.lang.Thread.sleep(Native Method)
at com.company.verticals.EventBusReceiverVerticle.lambda$start$1(EventBusReceiverVerticle.java:35)
at com.company.verticals.EventBusReceiverVerticle$$Lambda$10/2029238960.handle(Unknown Source)
at io.vertx.core.eventbus.impl.EventBusImpl$HandlerRegistration.handle(EventBusImpl.java:1108)
at io.vertx.core.eventbus.impl.EventBusImpl.lambda$doReceive$189(EventBusImpl.java:755)
at io.vertx.core.eventbus.impl.EventBusImpl$$Lambda$17/1888442711.handle(Unknown Source)
at io.vertx.core.impl.ContextImpl.lambda$wrapTask$15(ContextImpl.java:314)
at io.vertx.core.impl.ContextImpl$$Lambda$9/911312317.run(Unknown Source)
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:357)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:357)
at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)
at java.lang.Thread.run(Thread.java:745)
答案 0 :(得分：9)
我必须通过设置：
将Verticle设置为workerException in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: -1
at java.util.Vector.elementData(Vector.java:730)
at java.util.Vector.elementAt(Vector.java:473)
at javax.swing.table.DefaultTableModel.getValueAt(DefaultTableModel.java:649)
at javax.swing.JTable.getValueAt(JTable.java:2717)
at view.main.EstateScreen$2.valueChanged(EstateScreen.java:95)
at javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:184)
at javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:164)
at javax.swing.DefaultListSelectionModel.fireValueChanged(DefaultListSelectionModel.java:211)
at javax.swing.DefaultListSelectionModel.removeIndexInterval(DefaultListSelectionModel.java:677)
at javax.swing.JTable.tableRowsDeleted(JTable.java:4509)
at javax.swing.JTable.tableChanged(JTable.java:4412)
at javax.swing.table.AbstractTableModel.fireTableChanged(AbstractTableModel.java:296)
at javax.swing.table.AbstractTableModel.fireTableRowsDeleted(AbstractTableModel.java:261)
at javax.swing.table.DefaultTableModel.setNumRows(DefaultTableModel.java:321)
at javax.swing.table.DefaultTableModel.setRowCount(DefaultTableModel.java:339)
at view.main.EstateScreen.clearTable(EstateScreen.java:158)
at controller.RealEstateAgency$4.actionPerformed(RealEstateAgency.java:154)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6516)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
at java.awt.Component.processEvent(Component.java:6281)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4872)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4698)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
at java.awt.Container.dispatchEventImpl(Container.java:2273)
at java.awt.Window.dispatchEventImpl(Window.java:2719)
at java.awt.Component.dispatchEvent(Component.java:4698)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:740)
at java.awt.EventQueue.access$300(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:699)
at java.awt.EventQueue$3.run(EventQueue.java:697)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:713)
at java.awt.EventQueue$4.run(EventQueue.java:711)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:710)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
答案 1 :(得分：3)
另一种选择是增加超时
VertxOptions options = new VertxOptions();
options.setMaxEventLoopExecuteTime(Long.MAX_VALUE);
vertx = Vertx.vertx(options);`
答案 2 :(得分：1)
Vertx documentation中的关键句是
不要阻止我！
您正在获取阻止消息，因为您在Verticle中执行阻止代码。调用Thread.sleep(10000)会阻止当前垂直10秒。
将Verticle声明为工作人员是一种解决方法。请查看Vertx文档 Executing blocking code 。根据文档，您可以告诉Vertx执行Thread.sleep(10000)作为阻止代码。
vertx.executeBlocking({ future ->
// Call some blocking API that takes a significant amount of time to return
Thread.sleep(10000)
future.complete(result)
}, { res ->
println("The result is: ${res.result()}")
})
也许您可以解释测试的目的以及您使用Thread.sleep(10000)的原因？