用到的提供soap接口的网址是：

这个页面有多个方法可以通过soap调用,页面上也有说明.如果用IE的浏览器还能看到此网页提供的wsdl文件.要做soap的webservice首先要了解一些关于webservice和soap的一些基本知识.下面几个网址可能会帮你快速入门.

soap教程：

使用WSDL发布WebService：

为了便于理解,我先讲下soap的大体原理:我们在iphone封装soap请求信息,发送到某个提供soap服务的服务器,如下例中我们用到的服务器能接受和识别soap请求,当它接到请求,就根据客户端的请求情况调用服务器上的某个函数,并将函数返回结果封装成soap反馈信息发送给客户端.客户端接收到soap反馈信息后,进行解析处理,以用户能理解的形式呈现给用户.整个过程就这么简单.

好了,假设现在你已经有关于soap的基础知识(没有也没关系,看了例子,再理解就更好理解了),下面我们开始做soap的例子.

第一步,建一个Hello_SOAP项目.用IB将Hello_SOAPViewController.xib做成如下图的界面

然后在Hello_SOAPViewController.h中添加如下代码：

@interface Hello_SOAPViewController : UIViewController {
           IBOutlet UITextField *nameInput;         IBOutlet UILabel *greeting;         NSMutableData *webData;         NSMutableString *soapResults;         NSXMLParser *xmlParser;         BOOL recordResults; } @property(nonatomic, retain) IBOutlet UITextField *nameInput; @property(nonatomic, retain) IBOutlet UILabel *greeting; @property(nonatomic, retain) NSMutableData *webData; @property(nonatomic, retain) NSMutableString *soapResults; @property(nonatomic, retain) NSXMLParser *xmlParser; -(IBAction)buttonClick: (id) sender; - (void)getOffesetUTCTimeSOAP;

然后在Hello_SOAPViewController.xib中将两个输出口和一个动作连接好,这个不用手把手吧?

在Hello_SOAPViewController.m文件中加入以下方法 :

- (void)getOffesetUTCTimeSOAP {
           recordResults = NO; //封装soap请求消息         NSString *soapMessage = [NSString stringWithFormat: @"
     \n" "
     
      \n"                                                          "
      
       \n" "
       
        \n"                                                          "
        
         %@
        \n" "
       \n" "
      \n" "
     \n",nameInput.text                                                          ];         NSLog(soapMessage); //请求发送到的路径         NSURL *url = [NSURL URLWithString:@"http://www.nanonull.com/TimeService/TimeService.asmx"];         NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url];         NSString *msgLength = [NSString stringWithFormat:@"%d", [soapMessage length]]; //以下对请求信息添加属性前四句是必有的，第五句是soap信息。         [theRequest addValue: @"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];         [theRequest addValue: @"http://www.Nanonull.com/TimeService/getOffesetUTCTime" forHTTPHeaderField:@"SOAPAction"];         [theRequest addValue: msgLength forHTTPHeaderField:@"Content-Length"];         [theRequest setHTTPMethod:@"POST"];         [theRequest setHTTPBody: [soapMessage dataUsingEncoding:NSUTF8StringEncoding]]; //请求         NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self]; //如果连接已经建好，则初始化data         if( theConnection )         {
                   webData = [[NSMutableData data] retain];         } else         {
                   NSLog(@"theConnection is NULL");         } }

这个方法作用就是封装soap请求,并向服务器发送请求.

代码有注释.不重复讲解.soap并不难,难的是没有案例告诉我们怎么把其它平台的soap移植过来,这里我给出了代码,我相信对iphone开发人员的话应该能看懂了.我在下面会把此案例的源代码附上.如果自己做不出来再看我的代码.如果我这样讲您觉得不够细,那说明您的iphone开发还不是太深入,那么您应该用不到soap技术.可以飘过了.

下面的代码是接收信息并解析,显示到用户界面：

-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
           [webData setLength: 0];         NSLog(@"connection: didReceiveResponse:1"); } -(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
           [webData appendData:data];         NSLog(@"connection: didReceiveData:2"); } //如果电脑没有连接网络，则出现此信息（不是网络服务器不通） -(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
           NSLog(@"ERROR with theConenction");         [connection release];         [webData release]; } -(void)connectionDidFinishLoading:(NSURLConnection *)connection {
           NSLog(@"3 DONE. Received Bytes: %d", [webData length]);         NSString *theXML = [[NSString alloc] initWithBytes: [webData mutableBytes] length:[webData length] encoding:NSUTF8StringEncoding];         NSLog(theXML);         [theXML release]; //重新加載xmlParser         if( xmlParser )         {
                   [xmlParser release];         }         xmlParser = [[NSXMLParser alloc] initWithData: webData];         [xmlParser setDelegate: self];         [xmlParser setShouldResolveExternalEntities: YES];         [xmlParser parse];         [connection release]; //[webData release]; } -(void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *) namespaceURI qualifiedName:(NSString *)qName attributes: (NSDictionary *)attributeDict {
           NSLog(@"4 parser didStarElemen: namespaceURI: attributes:"); if( [elementName isEqualToString:@"getOffesetUTCTimeResult"])         {
   if(!soapResults)                 {
                           soapResults = [[NSMutableString alloc] init];                 }                 recordResults = YES;         } } -(void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string {
           NSLog(@"5 parser: foundCharacters:"); if( recordResults )         {
                   [soapResults appendString: string];         } } -(void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName {
           NSLog(@"6 parser: didEndElement:"); if( [elementName isEqualToString:@"getOffesetUTCTimeResult"])         {
                   recordResults = FALSE;                 greeting.text = [[[NSString init]stringWithFormat:@"第%@时区的时间是: ",nameInput.text] stringByAppendingString:soapResults];                 [soapResults release];                 soapResults = nil;                 NSLog(@"hoursOffset result");         } } - (void)parserDidStartDocument:(NSXMLParser *)parser{
           NSLog(@"-------------------start--------------"); } - (void)parserDidEndDocument:(NSXMLParser *)parser{
           NSLog(@"-------------------end--------------"); }

说明下:

-(void)connectionDidFinishLoading:(NSURLConnection *)connection

这个方法是存储接收到的信息：

-(void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName

方法是显示接收的信息.

以上代码已经包括所有用到的代码.

如果一切顺利,应该有如下界面

1.打开界面

2.输入请求的时区

3.显示服务器反馈结果