fle学习笔记3HttpService分析和总结.docx

?xmlversion=1.0encoding=UTF-8

?xmlversion=1.0encoding=UTF-8?

department

employeeid=1234

namejames/name

sexmale/sex

age25/age

titlemanager/title

descgotmerried/desc

/employee

employeeid=1236

namemickle/name

sexfamale/sex

age30/age

titlesales/title

descnotgotmerried/desc

/employee

employeeid=1238

namemarry/name

sexfamale/sex

age18/age

titleoffier/title

descgotmerried/desc

/employee

employeeid=1240

nametom/name

sexmale/sex

age40/age

titleworker/title

descgotmerried/desc

/employee

1.Flex中对于通过HttpService来进行数据通信进行了良好的封装。2.下面用一个例子来解释Flex中对于HttpService是如何应用的。3.Demo4

注意：这里的employees.xml只是模拟一个远程客户端调用的过程。文件内容如下：

/

/department

FlexDemo4.mxml文件

?xmlversion=1.0encoding=utf-8?

?xmlversion=1.0encoding=utf-8?

mx:Applicationxmlns:mx=/2006/mxmllayout=absoluteinitialize=employeeService.send()

mx:Script

![CDATA[

importmx.messaging.config.ServerConfig;

importmx.rpc.events.ResultEvent;

privatefunctionresultHandler(event:ResultEvent):void

{

}

]]

/mx:Script

mx:HTTPServiceid=employeeServiceurl=data/employees.xmlresult=resultHandler(event)

/mx:HTTPService

/mx:Application

下面启用Flex的debug模式来执行调试。程序调试界面

发现了原来在FlexDemo4.mxml文件

mx:HTTPService

mx:HTTPService

id=employeeService

url=data/employees.xml

result=resultHandler(event)

中的result属性原来调用的是mx.utils.ObjectProxy这个类。

Result下面发现了Flex已经读取了employees.xml的所有内容

备注：实质上是将xml的信息存放到了一个集合中。

mx:DataGriddataProvider={employeeData}/mx:DataGrid补充：将xml结果输出到DataGrid中将会用到这个标签

mx:DataGriddataProvider={employeeData}/mx:DataGrid

?xmlversion=1.0encoding=utf-8?mx:Applicationxmlns:mx=/2006/mxml

?xmlversion=1.0encoding=utf-8?

mx:Applicationxmlns:mx=/2006/mxmllayout=absoluteinitialize=employeeService.send()

mx:Script

![CDATA[

importmx.messaging.config.ServerConfig;

importmx.rpc.events.ResultEvent;importmx.collections.ArrayCollection;[Bindable]

privatevaremployeeData:ArrayCollection;

privatefunctionresultHandler(event:ResultEvent):void

{

employeeData=event.result.department.employee;

}

]]