1
flash9/flash cs3(as3)通过soap访问Web Services
2来源：Roading's blog 作者：roading 2007-07-17 【大 中小】
3
4下面是as3访问Web Services的原理和过程,包括实例和源文件,已经经过了测试(http://www.roading.net/WebService/as3_soap.swf)
5
6前段时间写了 使用flash9（as3）连接webservice,结果发现这种以http post方法访问WebServices只能在测试环境下使用.然后就写了flash9/as3访问WebService的暂时替代方法,当然这是无奈之举,找不到合适的方法前先使用中转的方法来代替.
7
8但是还是需要找到真正的解决方法,昨天在翻看flash8的mx\services包的时候,在包里面的SOAPCall和PendingCall类里面有整个的访问方法.
9
10在SOAPCall类里面有request和response两个对象,分别是提交数据和返回数据.
11
12下面是节选SOAPCall类的asyncInvoke方法的一部分,实现request的构造和数据发送(这里是流程,具体实现细节在PendingCall类里面):
13
14
15//callback是PendingCall的实例.
16callback.encode();
17
18callback.callbackMethod = callbackMethod; // Callback method
19
20// Populate parameters
21callback.setupParams(args);
22
23// prepare response object
24var response = new XML();
25response.ignoreWhite = true;
26response.callback = callback;
27response._startTimeMark = startTime;
28
29
30callback.response = response;
31
32// create the async response mechanism
33response.onData = function(src)
34
{
35
}
36// fire message
37callback.request.sendAndLoad(this.endpointURI, response, "POST");
38//-------------------------------------------------------------------------------------------
39
40
41看到上面的代码,就会豁然开朗,就是使用soap协议,来提交和获取数据.那么,我们就可以很简单的构成一个SOAP 请求.我们看一下soap请求的格式(http://roading.net/WebService/test.asmx?op=say):
42下面是一个 SOAP 请求和响应示例。所显示的占位符需要由实际值替换。
43
44
45POST /WebService/test.asmx HTTP/1.1
46Host: roading.net
47Content-Type: text/xml; charset=utf-8
48Content-Length: length
49SOAPAction: "http://www.roading.net/say"
50
51<?xml version="1.0" encoding="utf-8"?>
52<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
53<soap:Body>
54<say xmlns="http://www.roading.net/">
55<str>string</str>
56</say>
57</soap:Body>
58</soap:Envelope>
59
60
61一个soap请求包括头部和数据.
62soap请求头部包括:
63
64
65POST /WebService/test.asmx HTTP/1.1
66Host: roading.net
67Content-Type: text/xml; charset=utf-8
68Content-Length: length
69SOAPAction: http://www.roading.net/say
70
71
72URLRequestHeader不支持post,host和Content-Length(ArgumentError: Error #2096: HTTP 请求标头 host 不能通过 ActionScript 设置。),同时也不必要,必须设置的是Content-Type和SOAPAction.
73
74
75//
76r.requestHeaders.push(new URLRequestHeader("Content-Type", "text/xml;charset=utf-8"));
77r.requestHeaders.push(new URLRequestHeader("SOAPAction", "http://www.roading.net/say"));
78//
79
80
81soap请求数据为:
82
83
84<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
85 <say xmlns="http://www.roading.net/"> //调用方法.. 命名空间
86 <str>hello</str> //参数
87 </say>
88</soap:Envelope>
89
90
91整个的soap请求如上面所示就可以使用URLLoader和URLRequest类来发送和接收数据了.下面是一个完整的调用WebServices的测试代码(不包括解析接收的数据):
92
93
94//WebService网址(为测试写的例子) http://www.roading.net/WebService/test.asmx
95import flash.net.*;
96var soap:Namespace = new Namespace("http://schemas.xmlsoap.org/soap/envelope/");
97
98var r:URLRequest = new URLRequest("http://www.roading.net/WebService/Test.asmx?op=say");
99r.method = URLRequestMethod.POST;
100r.requestHeaders.push(new URLRequestHeader("Content-Type", "text/xml;charset=utf-8"));
101r.requestHeaders.push(new URLRequestHeader("SOAPAction", "http://www.roading.net/say"));
102
103
104var rXML:XML =
105 <soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
106 <soap:Body/>
107 </soap:Envelope>
108 ;
109
110rXML.soap::Body.appendChild(
111 <say xmlns="http://www.roading.net/"> //
112 <str>hello</str> //
113 </say>
114);
115
116r.data = rXML;
117
118var l:URLLoader = new URLLoader();
119l.dataFormat = URLLoaderDataFormat.TEXT;
120l.load(r);
121
122l.addEventListener("ioError" ,err);
123l.addEventListener(Event.COMPLETE,xmlLoaded);
124function xmlLoaded(d)
125{
126
trace(l.data);
127 t.text = l.data;
128}
129
130function err(e)
131{
132 trace(e);
133}
134
flash9/flash cs3(as3)通过soap访问Web Services 2
来源：Roading's blog 作者：roading 2007-07-17 【大 中小】 3
4
下面是as3访问Web Services的原理和过程,包括实例和源文件,已经经过了测试(http://www.roading.net/WebService/as3_soap.swf)5
6
前段时间写了 使用flash9（as3）连接webservice,结果发现这种以http post方法访问WebServices只能在测试环境下使用.然后就写了flash9/as3访问WebService的暂时替代方法,当然这是无奈之举,找不到合适的方法前先使用中转的方法来代替.7
8
但是还是需要找到真正的解决方法,昨天在翻看flash8的mx\services包的时候,在包里面的SOAPCall和PendingCall类里面有整个的访问方法.9
10
在SOAPCall类里面有request和response两个对象,分别是提交数据和返回数据.11
12
下面是节选SOAPCall类的asyncInvoke方法的一部分,实现request的构造和数据发送(这里是流程,具体实现细节在PendingCall类里面):13
14
15
//callback是PendingCall的实例. 16
callback.encode(); 17
18
callback.callbackMethod = callbackMethod; // Callback method 19
20
// Populate parameters 21
callback.setupParams(args); 22
23
// prepare response object 24
var response = new XML(); 25
response.ignoreWhite = true; 26
response.callback = callback; 27
response._startTimeMark = startTime; 28
29
30
callback.response = response; 31
32
// create the async response mechanism 33
response.onData = function(src) 34
{ 
35
} 36
// fire message 37
callback.request.sendAndLoad(this.endpointURI, response, "POST"); 38
//------------------------------------------------------------------------------------------- 39
40
41
看到上面的代码,就会豁然开朗,就是使用soap协议,来提交和获取数据.那么,我们就可以很简单的构成一个SOAP 请求.我们看一下soap请求的格式(http://roading.net/WebService/test.asmx?op=say):42
下面是一个 SOAP 请求和响应示例。所显示的占位符需要由实际值替换。43
44
45
POST /WebService/test.asmx HTTP/1.1 46
Host: roading.net 47
Content-Type: text/xml; charset=utf-8 48
Content-Length: length 49
SOAPAction: "http://www.roading.net/say" 50
51
<?xml version="1.0" encoding="utf-8"?> 52
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"> 53
<soap:Body> 54
<say xmlns="http://www.roading.net/"> 55
<str>string</str> 56
</say> 57
</soap:Body> 58
</soap:Envelope> 59
60
61
一个soap请求包括头部和数据.62
soap请求头部包括:63
64
65
POST /WebService/test.asmx HTTP/1.1 66
Host: roading.net 67
Content-Type: text/xml; charset=utf-8 68
Content-Length: length 69
SOAPAction: http://www.roading.net/say 70
71
72
URLRequestHeader不支持post,host和Content-Length(ArgumentError: Error #2096: HTTP 请求标头 host 不能通过 ActionScript 设置。),同时也不必要,必须设置的是Content-Type和SOAPAction.73
74
75
// 76
r.requestHeaders.push(new URLRequestHeader("Content-Type", "text/xml;charset=utf-8")); 77
r.requestHeaders.push(new URLRequestHeader("SOAPAction", "http://www.roading.net/say")); 78
// 79
80
81
soap请求数据为:82
83
84
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"> 85
<say xmlns="http://www.roading.net/"> //调用方法.. 命名空间 86
<str>hello</str> //参数 87
</say> 88
</soap:Envelope> 89
90
91
整个的soap请求如上面所示就可以使用URLLoader和URLRequest类来发送和接收数据了.下面是一个完整的调用WebServices的测试代码(不包括解析接收的数据):92
93
94
//WebService网址(为测试写的例子) http://www.roading.net/WebService/test.asmx 95
import flash.net.*; 96
var soap:Namespace = new Namespace("http://schemas.xmlsoap.org/soap/envelope/"); 97
98
var r:URLRequest = new URLRequest("http://www.roading.net/WebService/Test.asmx?op=say"); 99
r.method = URLRequestMethod.POST; 100
r.requestHeaders.push(new URLRequestHeader("Content-Type", "text/xml;charset=utf-8")); 101
r.requestHeaders.push(new URLRequestHeader("SOAPAction", "http://www.roading.net/say")); 102
103
104
var rXML:XML = 105
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"> 106
<soap:Body/> 107
</soap:Envelope> 108
; 109
110
rXML.soap::Body.appendChild( 111
<say xmlns="http://www.roading.net/"> // 112
<str>hello</str> // 113
</say> 114
); 115
116
r.data = rXML; 117
118
var l:URLLoader = new URLLoader(); 119
l.dataFormat = URLLoaderDataFormat.TEXT; 120
l.load(r); 121
122
l.addEventListener("ioError" ,err); 123
l.addEventListener(Event.COMPLETE,xmlLoaded); 124
function xmlLoaded(d) 125
{ 126
trace(l.data); 127
t.text = l.data; 128
} 129
130
function err(e) 131
{ 132
trace(e); 133
} 134