使用ios调用web Service成功案例

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：



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代码截图：





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。