详解跨平台iPhone中调用WCF服务（soap通信）

iPhone中调用WCF服务是本文要介绍的内容，由于对移动平台充满着好奇与兴趣，最近着手了iPhone开发和学习。学习的路线是从objective-c到cococa。方法是看了两本入门的英文书，还有就是学习apple的sdk。对于产品的基本想法是服务端用.net，手机客户端用iPhone。

一些复杂的逻辑处理放到服务端实现，客户端与服务端通过XML交互，在iPhone客户端解析XML通过cocoa展示数据。由于iPhone和DoNet是两个完全不同的平台。iPhone依靠mac系统平台，donet依赖windows系统平台。这篇文章我将通过一个helloworld程序讲述一下通过WCF实现从mac系统到windows的跨平台的调用。

1、创建简单的WCF服务


1、创建简单的WCF服务

服务契约代码如下



2、在iPhone中调用WCF

与donet调用wcf服务不同，这里使用NSURLConnection去获取WCF服务端的数据，代码如下：（单击可放大）

NSString *soapMessage=[NSStringstringWithFormat:

@"<?xmlversion="1.0" encoding"UTF-8"?>\n"

"<SOAP-ENV:Envelope \n"

"xmlns:xsd="http://www.w3.org/2001/XMLSchema"\n"

"xmlns:SOAP-ENC="http://schemas.xmlsoap.org/envelope/ "\n"

"SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/encoding/"\n"

"xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">\n"

"<SOAP-ENV:Body>\n"

"<GetDataxmls="http://tempuri.org/">"

"</GetData>\n"

"</SOAP-ENV:Body>\n"

"</SOAP-ENV:Envelope>"

];

NSURL *url=[NSURLURLWithString:@"http://10.5.23.117:8008/servicel.svc"];

NSMutableURLRequest*theRequest=[NSMutableURLRequestrequestWithURL:url];

NSString *msgLength=[NSStringstringWithFormat:@"%d",[soapMessage length]];

[theRequest addValue:@"text/xml;charset=utf-8"forHTTPHeaderField:@"Content-Type"];

[theRequestaddValue:@"http://tempuri.org/ISerVice1/GetData"forHTTPHeaderField:@"SOAPAction"];

[theRequest addValue:msgLengthforHTTPHeaderField:@"Content-Length"];

[theRequestsetHTTPMethod:@"POST"];

[theRequest setHTTPBody:[soapMessagedataUsingEncoding:NSUTF8StringEncoding]];

NSURLConnection*theConnection=[[NSURLConnection alloc]initWithRequest:urldelegate:self];

if (theConnection) {

webData=[[NSMutableDataalloc]retain];

}

else {

NSLog(@"the Connection isnil");

}

NSURLConnection的委托方法：

-(void)connection:(NSURLConnection *)connectiondidReceiveResponse:(NSURLResponse *)response
{
[receivedData setlength:0];
}
- (void)connection:(NSURLConnection *)connectiondidReceiveData:(NSData *)data
{
[receivedData appendData:data];

return;
}
- (void)connectionDidFinishLoading:(NSURLConnection*)connection
{

NSString *theXML = [[NSString alloc]initWithBytes: [webData mutableBytes] length:[webData length]encoding:NSUTF8StringEncoding];

NSLog(theXML);

[theXMLrelease];

//重新加載xmlParser

if(xmlParser )

{

[xmlParserrelease];

}

xmlParser= [[NSXMLParser alloc] initWithData: webData];

[xmlParsersetDelegate: self];

[xmlParsersetShouldResolveExternalEntities: YES];

[xmlParserparse];

[connectionrelease];

//[webDatarelease];