使用ios调用web Service成功案例

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实现两个int类型相加返回和，在使用的时候导入需要用到的类库，具体使用详见：

这里写图片描述

http://blog.csdn.net/iosweb/article/details/49593997
代码截图：
这里写图片描述

代码如下：

- (void)viewDidLoad{    [super viewDidLoad];    int i = 5;    int j = 12;    NSString *soapMessage =    [NSString stringWithFormat:     @"<soap12:Envelope xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xsd='http://www.w3.org/2001/XMLSchema' xmlns:soap12='http://www.w3.org/2003/05/soap-envelope'>\n"     "<soap12:Body>\n"     "<add xmlns='http://tempuri.org/'>\n"     "<a>%i</a>"     "<b>%i</b>"     "</add>\n"//add是方法名     "</soap12:Body>\n"     "</soap12:Envelope>\n",i,j     ];//    url端口html    NSURL *url = [NSURL URLWithString: @"http://m.93966.net:1133/BmIndexPageWeb/wsTest.asmx"];    req = [NSMutableURLRequest requestWithURL:url];    NSString *msgLength = [NSString stringWithFormat:@"%lu",(unsigned long)[soapMessage length]];    [req addValue:@"http://tempuri.org/add" forHTTPHeaderField:@"SOAPAction"];    [req addValue:@"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];    [req addValue:msgLength forHTTPHeaderField:@"Content-Length"];    [req setHTTPMethod:@"POST"];    [req setHTTPBody: [soapMessage dataUsingEncoding:NSUTF8StringEncoding]];    NSURLConnection *conn = [[NSURLConnection alloc] initWithRequest:req delegate:self];    if(conn)    {       webData = [NSMutableData data];    }}- (void) connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{    [webData setLength:0];}- (void) connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{    [webData appendData:data];//    data转换成字符串类型//    NSString* aStr= [[NSString alloc] initWithData:webData encoding:NSASCIIStringEncoding];//    NSLog(@"%@",aStr);}// 当请求失败时的相关操作；- (void) connection:(NSURLConnection *)connection didFailWithError:(NSError *)error{    NSLog(@"%@",error);}//回调- (void) connectionDidFinishLoading:(NSURLConnection *) connection{//    NSLog(@"Done. Received Bytes: %lu", (unsigned long)[webData length]);    NSString *theXML = [[NSString alloc] initWithBytes:[webData mutableBytes] length:[webData length] encoding:NSUTF8StringEncoding];    NSLog(@"返回的结果: %@", theXML);}

需要注意的2个参数：

NSURL *url = [NSURL URLWithString: @"http://m.93966.net:1133/BmIndexPageWeb/wsTest.asmx"];//Web Service 的RUL地址[req addValue:@"http://tempuri.org/add" forHTTPHeaderField:@"SOAPAction"];

//注意这里的参数，是名字空间加上接口方法名
下面还要我讲吗？：）接收服务器反馈数据的方法已经赤裸裸的写在代码的最后了，这个方法：

- (void) connectionDidFinishLoading:(NSURLConnection *) connection

看名字也知道它的作用。在里面得到反馈信息就OK了。返回的数据是XML格式的。

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