访问Flex中的Java对象字段BlazeDS

Question

我正在使用BlazeDS将Flex与Java连接。我在遇到麻烦时，我尝试访问Java对象字段中的Flex

这是我的Java类路径：

package intetech; 

public class Path { 

    public Path(){ 

    } 
    public Path(double x1, double y1, double x2, double y2){ 
     this.x1 = x1; 
     this.y1 = y1; 
     this.x2 = x2; 
     this.y2 = y2; 
    } 

    public double getX1(){ 
     return x1; 
    } 
    public double getY1(){ 
     return y1; 
    } 
    public double getX2(){ 
     return x2; 
    } 
    public double getY2(){ 
     return y2; 
    } 

    private double x1; 
    private double y1; 
    private double x2; 
    private double y2; 
} 

而Java类PathsService返回路径的ArrayList中的getPaths方法：

package intetech; 

import org.xml.sax.SAXException; 
import javax.xml.parsers.ParserConfigurationException; 
import java.io.File; 
import java.io.IOException; 
import java.util.ArrayList; 
import java.util.LinkedList; 
import java.util.List; 

public class PathsService { 
    public PathsService(){} 

    public List<Path> getPaths(){ 
     File svgFile = new File("D:\\work\\blazedsTurnkey\\blazeds-turnkey-4.0.0.14931\\tomcat\\webapps\\blazeds\\WEB-INF\\classes\\intetech\\test.svg"); 
     try{ 
      SvgParser svgp = new SvgParser(svgFile); 
      listOtr = svgp.getList(); 
     } catch (SAXException ex) { 

     } catch (ParserConfigurationException ex) { 

     } catch (IOException ex) { } 

     return listOtr; 
    } 

    private static List<Path> listOtr; 
} 

所以我尝试从Flex ArrayList中获取一个路径的坐标。 Main.mxml：

<fx:Declarations> 
    <!--setup the connection to the Java class--> 
    <mx:RemoteObject 
     id="PathsService" 
     destination="pathsservice" 
     showBusyCursor="true" 
     > 

     <mx:method name="getPaths" 
        result="resultGetPaths(event)" 
        fault="faultGetPaths(event)"/> 



    </mx:RemoteObject> 
</fx:Declarations> 



<fx:Script> 
     import mx.collections.ArrayCollection; 
     import mx.controls.Alert; 
     import mx.rpc.events.FaultEvent; 
     import mx.rpc.events.ResultEvent; 
     import mx.utils.ObjectUtil; 



     private var aPath:Path ; 
     private var pathsArrCol:ArrayCollection; 
     private var otr:Path; 


     public function resultGetPaths(event:ResultEvent):void { 

      pathsArrCol = event.result as ArrayCollection; 
      **otr = pathsArrCol.getItemAt(0) as Path; 
      Alert.show(ObjectUtil.toString(otr.getX1()));** 
     } 


     private function faultGetPaths(event:FaultEvent):void{ 

      Alert.show(ObjectUtil.toString(event.fault)); 


     } 

</fx:Script> 

和Path.as文件：

package 
{ 
    [RemoteClass(alias="intetech.Path")] 

[Bindable] 
public class Path 
{ 

    private var ax1:Number; 
    private var ay1:Number; 
    private var ax2:Number; 
    private var ay2:Number; 




    public function getX1():Number { 
     return ax1; 
    } 
    public function getY1():Number { 
     return ay1; 
    } 
    public function getX2():Number { 
     return ax2; 
    } 
    public function getY2():Number { 
     return ay2; 
    } 



public function setX1(data:Number): void{ 
     ax1 = data; 
    } 
    public function setY1(data:Number): void{ 
     ax1 = data; 
    } 
    public function setX2(data:Number): void{ 
     ax1 = data; 
    } 
    public function setY2(data:Number): void{ 
     ax1 = data; 
    } 

} 
} 

我有NaN的结果，当我运行该应用程序，请帮助

Answer 1

您没有任何公开的制定者/ getter在你的flex对象中：

package { 

    [RemoteClass(alias="intetech.Path")] 
    [Bindable] 
    public class Path { 

     private var ax1:Number; 
     private var ay1:Number; 
     private var ax2:Number; 
     private var ay2:Number; 

     public function get x1():Number { 
      return ax1; 
     } 

     public function get y1():Number { 
      return ay1; 
     } 

     public function get x2():Number { 
      return ax2; 
     } 

     public function get y2():Number { 
      return ay2; 
     } 

     public function set x1(data:Number):void { 
      ax1 = data; 
     } 

     public function set y1(data:Number):void { 
      ay1 = data; 
     } 

     public function set x2(data:Number):void { 
      ax2 = data; 
     } 

     public function set y2(data:Number):void { 
      ay2 = data; 
     } 

    } 
} 

结果是BlazeDS无法正确初始化你的新的Fle x对象与来自Java的序列化数据。