Flex+AS3中文件读入与写出及Datagrid自动获取行号和socket发送数据

本文链接：https://blog.youkuaiyun.com/lansirongjiadezhu/article/details/8965248

本文介绍了如何在Flex+AS3环境中实现文件读取和写入Datagrid，包括读取TXT文件到Datagrid，将Datagrid数据写回TXT，Datagrid第一列自动生成行号，以及通过Socket发送数据的实现方法。

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Flex+AS3中文件的读入并写入Datagrid中：

  protected function button4_clickHandler(event:MouseEvent):void
   {

    // test.text += "\n";
    // test.text += "DIP11:"+DIP11+"\n";
    var urlRequest:URLRequest = new URLRequest("D:\\Hello.txt");
    var urlLoader:URLLoader=new URLLoader(urlRequest);
    function readData():void
    {

     var data:String = urlLoader.data;

     var body:Array = data.split("\n");

     for(var i:int = 1; i< body.length; i++ )
     {
      var info:Array = body[i].toString().split("    ");

      var B1:String=info[0];
      var B2:String=info[1];
      var B3:String=info[2];
      var B4:String=info[3];
      var B5:String=info[4];
      var B6:String=info[5];
      var B7:String=info[6];
      var B8:String=info[7];
      var B9:String=info[8];
      var B10:String=info[9];
      var B11:String=info[10];
      var B12:String=info[11];


      //Alert.show("2");
      array.addItem({A:B1,B:B2,C:B3,D:B4,E:B5,F:B6,G:B7,H:B8,I:B9,J:B10,K:B11,L:B12});
      DataGrid1.dataProvider=array;


     }

     gettextdata(array);
     //var column:int=DataGrid1.columnCount;
     //var row:int=model.textdata.length;
    }


    urlLoader.addEventListener(Event.COMPLETE, readData);

   }

Flex+AS3中把Datagrid中数据写入TXT文件：

protected function button6_clickHandler(event:MouseEvent):void
   {

    var exportFile:FileReference = new FileReference();
    exportFile.addEventListener(Event.COMPLETE, saveComplete);
    var mbytes:String="source_port_id ";
        mbytes=mbytes+"\r\n";
    for(var i:int=0; i<model.textdata.length;i++) {

     mbytes=mbytes+model.textdata[i]+"\r\n";

    }

    exportFile.save(mbytes, "Write.txt");

   }

Flex+AS3中Datagrid第一列自动显示行号：

<mx:DataGridColumn dataField="HEAD" headerText="TrafficDemandID" editable="true">
   <mx:itemRenderer>
    <mx:Component>
     <mx:Label text="{outerDocument.genrowno(data)}" />
    </mx:Component>
   </mx:itemRenderer>
   </mx:DataGridColumn>

outerDocument.genrowno(data)函数如下：（必须是public类型的）

public function genrowno(hh:Object):String {
    var colomcount:String=DataGrid1.dataProvider.getItemIndex(hh)+1;
    return colomcount;
   }

Flex+AS3中socket发送数据：

msocket=new Socket();

msocket.connect(DIP11,9998);

var len:int = 12+(model.textdata.length)*48;
     writeHeader(CREQ,len);
     socket.writeInt(1);

     var myarray:Array=new Array();
     for(var j:int=0;j<model.textdata.length;j++)
     {
      Alert.show(model.textdata[j],"message");
      myarray= model.textdata[j].split("|");
      for(var i:int=0;i<myarray.length;i++)
      {
       socket.writeInt(int(myarray[i].valueOf()));

      }
     }
     socket.flush();