Flex数据访问：WebService(二)使用参数
上一篇介绍Flex的WebService的使用，可以调用多种类型的数据，都是直接调用，没有使用参数，本篇学习使用参数调用WebService，WebService的参数类型可以是：简单类型（如数值，字串串等），简单实体模型（只有属性），比较复杂的实体模型（内陷其他实体），以及集合，XML等。
Flex在调用不同后台实现的Web Method方式只是在构造参数有些区别，调用方式是一样的，以下简单介绍Flex调用.NET的Web Method使用不同参数。
定义Web Method用到的类：
1: [Serializable]
2: public class Employee
3: {
4: public int id { get; set; }
5: public string name { get; set; }
6: public int age { get; set; }
7: } 8: 9: [Serializable]
10: public class Dept
11: {
12: public int DeptID{ get; set; }
13: public string DeptName { get; set; }
14: public Employee[] Employees { get; set; }
15: }16: 一、简单类型参数
Web Method定义：
1: [WebMethod]
2: public Employee GetEmployee(int id)
3: {4: return new Employee
5: {
6: id = id,7: name = "Employee"+id,
8: age = 25 9: };10: }11: Flex可以直接定义operation的时候定义requests：
1: <?xml version="1.0" encoding="utf-8"?>2: <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
3: <mx:Script>
4: <![CDATA[
5: import mx.rpc.soap.mxml.Operation;
6: import mx.collections.ArrayCollection;
7: import mx.rpc.events.FaultEvent;
8: import mx.rpc.events.ResultEvent;
9: import mx.controls.Alert;
10: private function onResult(event:ResultEvent):void
11: {
12: var msg:String="ID:"+event.result.id+"\n"+
13: "Name:"+event.result.name+"\n"+
14: "Age:"+event.result.age;
15: Alert.show(msg);16: }17: 18: private function onFault(event:FaultEvent):void
19: {
20: Alert.show("Error："+event.message);
21: }22: 23: private function GetEmployee():void
24: {
25: MyService.GetEmployee.send();26: }27: ]]>28: </mx:Script>
29:
30: <mx:Button label="GetEmployee" click="GetEmployee()"/>
31:
32: <mx:WebService id="MyService" wsdl="http://localhost:4081/Flex.asmx?WSDL" useProxy="false"
33: result="onResult(event)" fault="onFault(event)">
34: <mx:operation name="GetEmployee">
35: <mx:request xmlns="">
36: <id>1</id>
37: </mx:request>
38: </mx:operation>
39: </mx:WebService>
40: </mx:Application>
运行结果：
二、简单对象
Web Method定义，模拟添加对象：
1: [WebMethod]
2: public int AddEmployee(Employee employee)
3: {4: return 1;
5: }6: Flex前端代码，参数名跟Web Method的参数名一样：
1: <?xml version="1.0" encoding="utf-8"?>2: <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
3: <mx:Script>
4: <![CDATA[
5: import mx.rpc.soap.mxml.Operation;
6: import mx.collections.ArrayCollection;
7: import mx.rpc.events.FaultEvent;
8: import mx.rpc.events.ResultEvent;
9: import mx.controls.Alert;
10: private function onResult(event:ResultEvent):void
11: {
12: Alert.show(event.result.toString());13: }14: 15: private function onFault(event:FaultEvent):void
16: {
17: Alert.show("Error："+event.message);
18: }19: 20: private function AddEmployee():void
21: {
22: var emp:Object=new Object();
23: emp.id=0;24: emp.name="user1";
25: emp.age=20;26: 27: MyService.AddEmployee(emp);28: }29: ]]>30: </mx:Script>
31:
32: <mx:Button label="AddEmployee" click="AddEmployee()"/>
33:
34: <mx:WebService id="MyService" wsdl="http://localhost:4081/Flex.asmx?WSDL" useProxy="false"
35: result="onResult(event)" fault="onFault(event)">
36: <mx:operation name="AddEmployee">
37: </mx:operation>
38: </mx:WebService>
39: </mx:Application>
运行结果：
跟踪Web Method的employee参数：
三、对象数组
Web Method定义，添加多个对象：
1: [WebMethod]
2: public int AddEmployees(Employee[] list)
3: {4: return list.Length;
5: }6: Flex前端代码：
1: <?xml version="1.0" encoding="utf-8"?>2: <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
3: <mx:Script>
4: <![CDATA[
5: import mx.rpc.soap.mxml.Operation;
6: import mx.collections.ArrayCollection;
7: import mx.rpc.events.FaultEvent;
8: import mx.rpc.events.ResultEvent;
9: import mx.controls.Alert;
10: private function onResult(event:ResultEvent):void
11: {
12: Alert.show(event.result.toString());13: }14: 15: private function onFault(event:FaultEvent):void
16: {
17: Alert.show("Error："+event.message);
18: }19: 20: private function AddEmployee():void
21: {
22: var empArr:Array=new Array();
23: empArr.push({id:0,name:"user1",age:22});
24: empArr.push({id:0,name:"user2",age:23});
25: empArr.push({id:0,name:"user3",age:25});
26: 27: MyService.AddEmployees(empArr);28: }29: ]]>30: </mx:Script>
31:
32: <mx:Button label="AddEmployee" click="AddEmployee()"/>
33:
34: <mx:WebService id="MyService" wsdl="http://localhost:4081/Flex.asmx?WSDL" useProxy="false"
35: result="onResult(event)" fault="onFault(event)">
36: <mx:operation name="AddEmployees">
37: </mx:operation>
38: </mx:WebService>
39: </mx:Application>
运行结果：
四、复杂对象
Web Method定义：
1: [WebMethod]
2: public int AddDept(Dept dept)
3: {4: return 1;
5: }6: Flex前端代码：
1: <?xml version="1.0" encoding="utf-8"?>2: <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
3: <mx:Script>
4: <![CDATA[
5: import mx.rpc.soap.mxml.Operation;
6: import mx.collections.ArrayCollection;
7: import mx.rpc.events.FaultEvent;
8: import mx.rpc.events.ResultEvent;
9: import mx.controls.Alert;
10: private function onResult(event:ResultEvent):void
11: {
12: Alert.show(event.result.toString());13: }14: 15: private function onFault(event:FaultEvent):void
16: {
17: Alert.show("Error：+event.message);
18: }19: 20: private function AddDept():void
21: {
22: var empArr:Array=new Array();
23: empArr.push({id:0,name:"user1",age:22});
24: empArr.push({id:0,name:"user2",age:23});
25: empArr.push({id:0,name:"user3",age:25});
26: 27: var dept:Object=new Object();
28: dept.DeptID=1;29: dept.DeptName="dept1";
30: dept.Employees=empArr;31: 32: MyService.AddDept(dept);33: }34: ]]>35: </mx:Script>
36:
37: <mx:Button label="AddDept" click="AddDept()"/>
38:
39: <mx:WebService id="MyService" wsdl="http://localhost:4081/Flex.asmx?WSDL" useProxy="false"
40: result="onResult(event)" fault="onFault(event)">
41: <mx:operation name="AddDept">
42: </mx:operation>
43: </mx:WebService>
44: </mx:Application>
运行结果：
