使用Flex访问ASP.net写的WebService .

发布时间：2020-12-15 04:11:19 所属栏目：百科来源：网络整理

导读：使用Flex程序作为客户端访问用ASP.net写的Web服务的过程如下： 1。使用VS新建一个ASP.net Webservice Website，假设命名为Website9。编写一个HelloWorld方法，接受一个string类型的输入和一个string类型的输出。以下是这个WebService的源代码： using ?Syste

使用Flex程序作为客户端访问用ASP.net写的Web服务的过程如下：

1。使用VS新建一个ASP.net Webservice Website，假设命名为Website9。编写一个HelloWorld方法，接受一个string类型的输入和一个string类型的输出。以下是这个WebService的源代码：

 
using?System;

using?System.Linq;

using?System.Web;

using?System.Web.Services;

using?System.Web.Services.Protocols;

using?System.Xml.Linq;

[WebService(Namespace?=?"http://tempuri.org/")]
[WebServiceBinding(ConformsTo?=?WsiProfiles.BasicProfile1_1)]

//?To?allow?this?Web?Service?to?be?called?from?script,?using?ASP.NET?AJAX,?uncomment?the?following?line.?

//?[System.Web.Script.Services.ScriptService]

public?class?Service?:?System.Web.Services.WebService
{

????public?Service?()?{

????????//Uncomment?the?following?line?if?using?designed?components?

????????//InitializeComponent();?
????}
????[WebMethod]

????public?string?HelloWorld(string?input)?{

????????return?"Hello?World,"+input;
????}
????
}

2。为这个WebSite项目指定一个固定端口，假设为8888。运行WebSite9可以看到这个WebService的WSDL地址为： http://localhost:8888/WebSite9/Service.asmx?WSDL
打开这个地址找到以下信息，代表了HelloWorld函数接受的输入参数名为input，返回的参数名为HelloWorldResult。

 
 
<s:element?name="HelloWorld">
??<s:complexType>
?????<s:sequence>

????????<s:element?minOccurs="0"?maxOccurs="1"?name="input"?type="s:string"?/>?
?????</s:sequence>
???</s:complexType>
</s:element>

<s:element?name="HelloWorldResponse">
??<s:complexType>
?????<s:sequence>

????????<s:element?minOccurs="0"?maxOccurs="1"?name="HelloWorldResult"?type="s:string"?/>?
?????</s:sequence>
??</s:complexType>
</s:element>

3。编写一个Flex程序以访问以上的WebService。以下通过两种方式：使用mxml和使用ActionScript。

方法一：使用mxml

 
 
<?xml?version="1.0"?encoding="utf-8"?>

<mx:Application?xmlns:mx="http://www.adobe.com/2006/mxml"?layout="absolute"?fontSize="12">

<mx:Script>

????<![CDATA[
????????import?mx.rpc.events.ResultEvent;
????????import?mx.rpc.events.FaultEvent;
????????
????????private?var?ws:WebService=new?WebService();
????????
????????internal?function?sendMessage():void{
????????????loader.HelloWorld.send();
????????}
????????
????????internal?function?completeHandler(evt:ResultEvent):void{
????????????result_txt.text=evt.result.toString();
????????}
????????
????????internal?function?errorHandler(evt:FaultEvent):void{
????????????result_txt.text=evt.fault.toString();
????????}

????]]>

</mx:Script>

<mx:WebService?id="loader"?wsdl="http://localhost:8888/WebSite9/Service.asmx?wsdl"?result="completeHandler(event)"?showBusyCursor="true"?fault="errorHandler(event)">

????<mx:operation?name="HelloWorld">

????????<mx:request>

????????<input>???????? <!--输入参数的名字:input-->
????????????{input_txt.text}

????????</input>

????????</mx:request>

????</mx:operation>
????

</mx:WebService>

????<mx:TextInput?x="110"?y="134"?width="249"?id="input_txt"/>

????<mx:Button?x="376"?y="134"?label="发送请求"?id="send_btn"?click="sendMessage()"/>

????<mx:TextArea?x="110"?y="193"?width="344"?height="258"?id="result_txt"/>
????

</mx:Application>

方法二：使用ActionScript

 
 
<?xml?version="1.0"?encoding="utf-8"?>

<mx:Application?xmlns:mx="http://www.adobe.com/2006/mxml"?layout="absolute"?fontSize="12">

<mx:Script>

????<![CDATA[
????????import?mx.rpc.events.ResultEvent;
????????import?mx.rpc.events.FaultEvent;
??????? import?mx.rpc.soap.WebService;? ? ? ? ? ? ? ? //添加对WebService控件的引用
????????
????????private?var?ws:WebService=new?WebService();
????????
????????internal?function?sendMessage():void{
????????????loader.HelloWorld.send();
?? ???????? ws.HelloWorld.addEventListener("result",completeHandler);
??????????? ws.HelloWorld.addEventListener("fault",errorHandler);
?? ???????? ws.loadWSDL("http://localhost:8888/WebSite9/Service.asmx?WSDL");
?? ???????? var?str:String=input_txt.text;
?? ???????? ws.HelloWorld(str);???????? ? ? ? ? ? ? ? ? //直接调用远程函数
????????}
????????
????????internal?function?completeHandler(evt:ResultEvent):void{
????????????result_txt.text=evt.result.toString();
????????}
????????
????????internal?function?errorHandler(evt:FaultEvent):void{
????????????result_txt.text=evt.fault.toString();
????????}
????]]>


</mx:Script>



????

</mx:WebService>

????<mx:TextInput?x="110"?y="134"?width="249"?id="input_txt"/>

????<mx:Button?x="376"?y="134"?label="发送请求"?id="send_btn"?click="sendMessage()"/>

????<mx:TextArea?x="110"?y="193"?width="344"?height="258"?id="result_txt"/>
????

</mx:Application>

（编辑：李大同）

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