mycat2 ui 连接问题

mycat2 ui 连接问题

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报错内容如下
io.vertx.core.json.DecodeException: Failed to decode:Unrecognized field "loginLimit" (class io.mycat.config.UserConfig), not marked as ignorable (9 known properties: "schema", "username", "ip", "transactionType", "encodeKey", "password", "isolation", "encryptType", "dialect"])
 at [Source: (StringReader); line: 773, column: 19] (through reference chain: io.mycat.config.MycatRouterConfig["users"]->java.util.ArrayList[0]->io.mycat.config.UserConfig["loginLimit"])
    at io.vertx.core.json.jackson.DatabindCodec.fromParser(DatabindCodec.java:129)
    at io.vertx.core.json.jackson.DatabindCodec.fromString(DatabindCodec.java:90)
    at io.vertx.core.json.Json.decodeValue(Json.java:83)
    at io.mycat.ui.TcpInfoProvider.getMycatRouterConfig(TcpInfoProvider.java:64)
    at io.mycat.ui.TcpInfoProvider.schemas(TcpInfoProvider.java:56)
    at io.mycat.ui.Controller.flashSchemas(Controller.java:96)
    at io.mycat.ui.Controller.getRootViewNode(Controller.java:342)
    at io.mycat.ui.Controller.flashRoot(Controller.java:67)
    at io.mycat.ui.MainPaneVO$1$1.handle(MainPaneVO.java:98)
    at io.mycat.ui.MainPaneVO$1$1.handle(MainPaneVO.java:79)
    at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
    at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
    at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
    at javafx.event.Event.fireEvent(Event.java:198)
    at javafx.scene.Node.fireEvent(Node.java:8411)
    at javafx.scene.control.Button.fire(Button.java:185)
    at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:182)
    at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:96)
    at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:89)
    at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
    at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
    at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
    at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
    at javafx.event.Event.fireEvent(Event.java:198)
    at javafx.scene.Scene$MouseHandler.process(Scene.java:3760)
    at javafx.scene.Scene$MouseHandler.access$1500(Scene.java:3488)
    at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1765)
    at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2497)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:397)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:295)
    at java.security.AccessController.doPrivileged(Native Method)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$2(GlassViewEventHandler.java:434)
    at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:411)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:433)
    at com.sun.glass.ui.View.handleMouseEvent(View.java:555)
    at com.sun.glass.ui.View.notifyMouse(View.java:941)
    at com.sun.glass.ui.win.WinApplication._enterNestedEventLoopImpl(Native Method)
    at com.sun.glass.ui.win.WinApplication._enterNestedEventLoop(WinApplication.java:214)
    at com.sun.glass.ui.Application.enterNestedEventLoop(Application.java:515)
    at com.sun.glass.ui.EventLoop.enter(EventLoop.java:107)
    at com.sun.javafx.tk.quantum.QuantumToolkit.enterNestedEventLoop(QuantumToolkit.java:634)
    at javafx.stage.Stage.showAndWait(Stage.java:478)
    at io.mycat.ui.MainPaneVO$1.handle(MainPaneVO.java:114)
    at io.mycat.ui.MainPaneVO$1.handle(MainPaneVO.java:64)
    at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
    at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
    at javafx.event.Event.fireEvent(Event.java:198)
    at javafx.scene.control.MenuItem.fire(MenuItem.java:462)
    at com.sun.javafx.scene.control.skin.ContextMenuContent$MenuItemContainer.doSelect(ContextMenuContent.java:1405)
    at com.sun.javafx.scene.control.skin.ContextMenuContent$MenuItemContainer.lambda$createChildren$6(ContextMenuContent.java:1358)
    at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
    at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
    at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
    at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
    at javafx.event.Event.fireEvent(Event.java:198)
    at javafx.scene.Scene$MouseHandler.process(Scene.java:3760)
    at javafx.scene.Scene$MouseHandler.access$1500(Scene.java:3488)
    at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1765)
    at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2497)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:397)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:295)
    at java.security.AccessController.doPrivileged(Native Method)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$2(GlassViewEventHandler.java:434)
    at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:411)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:433)
    at com.sun.glass.ui.View.handleMouseEvent(View.java:555)
    at com.sun.glass.ui.View.notifyMouse(View.java:941)
    at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
    at com.sun.glass.ui.win.WinApplication.lambda$null$4(WinApplication.java:185)
    at java.lang.Thread.run(Unknown Source)
Caused by: com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "loginLimit" (class io.mycat.config.UserConfig), not marked as ignorable (9 known properties: "schema", "username", "ip", "transactionType", "encodeKey", "password", "isolation", "encryptType", "dialect"])
 at [Source: (StringReader); line: 773, column: 19] (through reference chain: io.mycat.config.MycatRouterConfig["users"]->java.util.ArrayList[0]->io.mycat.config.UserConfig["loginLimit"])
    at com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException.from(UnrecognizedPropertyException.java:61)
    at com.fasterxml.jackson.databind.DeserializationContext.handleUnknownProperty(DeserializationContext.java:840)
    at com.fasterxml.jackson.databind.deser.std.StdDeserializer.handleUnknownProperty(StdDeserializer.java:1179)
    at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.handleUnknownProperty(BeanDeserializerBase.java:1592)
    at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.handleUnknownVanilla(BeanDeserializerBase.java:1570)
    at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:294)
    at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:151)
    at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:286)
    at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:245)
    at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:27)
    at com.fasterxml.jackson.databind.deser.impl.MethodProperty.deserializeAndSet(MethodProperty.java:129)
    at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:288)
    at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:151)
    at com.fasterxml.jackson.databind.ObjectMapper._readValue(ObjectMapper.java:4173)
    at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:2467)
    at io.vertx.core.json.jackson.DatabindCodec.fromParser(DatabindCodec.java:126)
    ... 103 more

报错含义：io.vertx.core.json.DecodeException：解码失败：无法识别的字段“loginLimit”
如果不需要“loginLimit”字段，只需将其从JSON字符串中删除即可。
如果确实需要“loginLimit”字段，请通过相应地更新代码来确保它包含在解码逻辑中。

该回答引用GPTᴼᴾᴱᴺᴬᴵ
这个错误信息是io.vertx.core.json.DecodeException，表明在读取配置文件时出现了问题，解码错误。具体来说，问题在于在io.mycat.config.UserConfig类中有一个“loginLimit”属性，但是它未被标记为可忽略的，因此无法识别它。如果这是您自己的代码，您可以通过为UserConfig类添加@JsonIgnoreProperties注释，将该字段标记为可忽略的。例如：

@JsonIgnoreProperties(ignoreUnknown = true)
public class UserConfig {
// your code
}

如果这不是您自己的代码，您需要检查您正在使用的MyCat版本是否与UI版本不兼容。如果是这样，您可能需要更新MyCat或UI版本以确保它们兼容。您还可以检查配置文件中是否存在其他错误或语法错误。

以下答案基于GPT3.5大模型与博主波罗歌编写：

这个错误的原因是 UI 无法解析你的配置文件中的一个字段，因为该字段不存在或不符合规范。更具体来说，它无法解析 'io.mycat.config.UserConfig[“loginLimit”]' 这个字段。可以参照报错信息找到对应的配置文件和字段，检查一下该字段是否存在，以及是否符合规范。另外可以检查配置文件的格式是否正确，属性值是否正确等。

  • 关于该问题，我找了一篇非常好的博客，你可以看看是否有帮助，链接：MyCat2搭建读写分离

参考GPT和自己的思路，这个错误是在尝试解析JSON时出现的。它说无法识别 "loginLimit" 这个字段，因为这个字段没有被标记为可忽略的字段。根据错误信息显示的堆栈跟踪，错误发生在 io.mycat.config.UserConfig 类的实例中的 loginLimit 字段。这个字段在 io.mycat.config.UserConfig 类中没有被定义，但是它被包含在从 JSON 解码的对象中。

这意味着您需要更新 Mycat 的配置文件以包含正确的字段，并且确保您的 Mycat 版本和 UI 版本匹配。如果您已经更新了配置文件但仍然出现此问题，请确保您的 JSON 格式正确，并且 Mycat 能够正确解析它。
根据错误提示，您可以尝试在UserConfig类中添加@JsonIgnoreProperties("loginLimit")注解来忽略loginLimit字段，示例如下：

import com.fasterxml.jackson.annotation.JsonIgnoreProperties;

@JsonIgnoreProperties("loginLimit")
public class UserConfig {
    // ...
}

这样，当使用 Jackson 进行 JSON 反序列化时，就会忽略loginLimit字段，从而避免DecodeException异常。

需要注意的是，这种方式只是暂时地避开了错误，并没有真正解决问题。如果您需要在代码中使用loginLimit字段，需要进一步检查MycatRouterConfig和UserConfig类是否正确地定义和使用了该字段，以及在 JSON 数据中是否正确地包含了该字段。

MyCat2UI连接问题通常可以通过以下步骤来解决： 1.确保MyCat2UI服务器已经正确安装并正常运行。 2.确保MyCat2客户端安装正确，并且已经正确配置。 3.打开MyCat2UI客户端，输入MyCat2服务器的IP地址和端口号，然后点击连接。 4.如果连接失败，请确认服务器IP地址和端口号的正确性。