2016-09-22 55 views
2

我需要注册一个ColdFusion回调(使用Lucee)将从一个Java类中如下执行:如何注册ColdFusion回调并从Java类中调用它?

(我掐灭如何我想象调用回调 - 在下面的评论)

package com.bonnydoonmedia.io; 

import org.java_websocket.client.WebSocketClient; 
import org.java_websocket.drafts.Draft_10; 
import org.java_websocket.handshake.ServerHandshake; 

import java.net.URI; 

/* 
* author: Robert Munn 
* date: 3/15/15 
* 
* WSClient.java 
* 
* Simple extension of WebSocketClient by Too Tall Nate 
* 
* based on example client at 
* 
* https://github.com/TooTallNate/Java-WebSocket 
* 
* License: Mozilla Public License 2.0 
* 
*/ 

public class WSClient extends WebSocketClient{ 

    public WSClient(URI serverUri , Draft_10 draft) { 
     super(serverUri, draft); 
    } 

    public WSClient(URI serverURI) { 
     super(serverURI); 
    } 

    public void connect(){ 
     super.connect(); 
    } 

    public void send(String message){ 
     super.send(message); 
    } 

    @Override 
    public void onOpen(ServerHandshake handshakedata) { 
     System.out.println("opened connection"); 
     System.out.println("ready state : " + super.getReadyState()); 
     /* INVOKE THE CALLBACK HERE LIKE: 
     callback({ 
      "action": "onOpen", 
      "data": {} 
     }); 
     */ 
    } 

    @Override 
    public void onMessage(String message) { 
     System.out.println("received: " + message); 
     /* INVOKE THE CALLBACK HERE LIKE: 
     callback({ 
      "action": "onMessage", 
      "data": { 
       "message": message 
      } 
     }); 
     */ 
    } 

    @Override 
    public void onClose(int code, String reason, boolean remote) { 
     // The codecodes are documented in class org.java_websocket.framing.CloseFrame 
     System.out.println("Connection closed by " + (remote ? "remote peer" : "us")); 
     /* INVOKE THE CALLBACK HERE LIKE: 
     callback({ 
      "action": "onClose", 
      "data": { 
      } 
     }); 
     */ 
    } 

    @Override 
    public void onError(Exception ex) { 
     ex.printStackTrace(); 
     // if the error is fatal then onClose will be called additionally 
     /* INVOKE THE CALLBACK HERE LIKE: 
     callback({ 
      "action": "onMessage", 
      "data": { 
      } 
     }); 
     */ 
    } 
} 

创建ColdFusion的“对象”是这样的(这已经工作):

// create the websocket client 
uriObject = createObject("java", "java.net.URI").init("ws://local.websockets"); 
wsClient = CreateObject("java", "WSClient").init(uriObject); 

现在我需要注册一个回调,我想它会像这样做:

function void wsCallback (data) { 

    switch(data.action) { 
     case "onOpen": 
      break; 
     case "onClose": 
      break; 
     case "onMessage": 
      break; 
     case "onError": 
      break; 
    } 

}; 

wsClient.setCallback(wsCallback); 

问题是,我该如何做最后一部分(在类中设置回调)?

+1

由于它是一个抽象类,请尝试使用[CFCProxy](https://helpx.adobe.com/coldfusion/developing-applications/using-web-elements-and-external-objects/integrating-jee-and -java元素合CFML应用/增强-java的集成功能于coldfusion.html)。创建具有所需功能的CFC(“onClose”等等)。然后在你的java类中,使用coldfusion.cfc.CFCProxy创建该组件的一个实例,并调用相应的函数,即'CFCProxy yourInstance = new CFCProxy(cfcPath ...); yourInstance.invoke(“onClose”,args)'。 – Leigh

+0

嗯......我之前没有用过CFCProxy。我将不得不进行调查。谢谢你的提示! – Redtopia

+0

(编辑)应该很简单。在CF方面没什么特别的。在java中,只需使用'new CFCProxy(cfcPath ...)'和'invoke(...)'创建并创建实例就可以了:) – Leigh

回答

0

由于它是一个抽象类,请尝试使用CFCProxy。使用它可创建具有所需功能的CFC,即“onClose”等。然后在你的java类中,导入coldfusion.cfc.CFCProxy并创建该组件的一个实例。然后调用相应的函数,即

CFCProxy yourInstance = new CFCProxy("c:/path/to/yourComponent.cfc"); 
yourInstance.invoke("onClose", args); 

CFCProxy类应该已经在核心类路径中。如果您不确定在哪里可以找到它,请尝试this tip以查明哪个jar包含该类。只需将createObject("java", "coldfusion.cfc.CFCProxy")替换为“testClass”即可。我用Lucee 4.5 Express试了一下,它说它位于{luccee_root}/lib/ext/lucee.jar

注意:它看起来像卢西也有other (cooler) options for interacting with the CF engine from java