Iphone 不解析Web服务

我有这个网络服务。我写了下面的代码，用于从webservice获取数据。但不能获取数据

我试过这个密码

 -(CGFloat)convertFrom:(NSString*)CountryName
    {

    NSString * urlString = [NSString stringWithFormat:@"http://www.webservicex.net/globalweather.asmx/GetCitiesByCountry?CountryName=%@",CountryName];




        NSMutableURLRequest * req = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:urlString]];
        [req setValue:@"http://www.webserviceX.NET" forHTTPHeaderField:@"Host"];
        [req setHTTPMethod:@"GET"];

        NSData * data  = [NSURLConnection sendSynchronousRequest:req returningResponse:nil error:nil];

        NSLog(@"%@",data);

        xmlResultString = [[NSMutableString alloc]init];

        NSLog(@"%@",xmlResultString);

        parser = [[NSXMLParser alloc]initWithData:data];
        [parser setDelegate:self];
        [parser parse];
        return result;

    }
    - (IBAction)ParseTapped:(id)sender
    {
        //NSString * urlString = [NSString stringWithFormat:@"http://www.webservicex.net/CurrencyConvertor.asmx/ConversionRate?FromCurrency=%@&ToCurrency=%@",fromCurrency,toCurrency];

        [self convertFrom:@"India"];


        //return result;

    }

    -(void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
    {

        [xmlResultString appendString:[string stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]]];

    }
    -(void)parserDidEndDocument:(NSXMLParser *)parser
    {
        result = [xmlResultString floatValue];

        NSLog(@"%f",result);

    }

    -(void)parser:(NSXMLParser *)parser parseErrorOccurred:(NSError *)parseError
    {
        result = -1;
    }

foundCharacters:（NSString*）字符串

（NSXMLParser*）解析器

这两个方法没有被调用

但是没有得到数据。我哪里会出错请帮我解决这个问题

---

提前谢谢。

我认为您传递的URL参数不正确。当我尝试你的WS-URL时

它给出一个错误，缺少参数：CountryName

正确的URL参数似乎是CountryName，而不是GetCitiesByCountryResult。这个修改过的URL给出了XML结果。签入WSDL需要为特定WS传递哪些参数

---

希望有帮助

在convertFrom方法中尝试这样做

 NSString *soapMessage = [NSString stringWithFormat:@"<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/"><soap:Body>
<GetCitiesByCountry xmlns="http://www.webserviceX.NET">
<CountryName>%@</CountryName>
</GetCitiesByCountry>
</soap:Body>
</soap:Envelope>",CountryName];
        NSURL *url = [NSURL URLWithString:http://www.webservicex.net/globalweather.asmx];
        NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url];
        NSString * msgLength = [NSString stringWithFormat:@"%d", [soapMessage length]];

        [theRequest addValue: @"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];
        [theRequest addValue: @"http://www.webserviceX.NET/GetCitiesByCountry" forHTTPHeaderField:@"SOAPAction"];
        [theRequest addValue: msgLength forHTTPHeaderField:@"Content-Length"];
        [theRequest setHTTPMethod:@"POST"];
        [theRequest setHTTPBody: [soapMessage dataUsingEncoding:NSUTF8StringEncoding]];

    NSData * data  = [NSURLConnection sendSynchronousRequest:theRequest returningResponse:nil error:nil];

NSString*soapMessage=[NSString stringWithFormat:@”
%@
“，国名]；
NSURL*url=[NSURL URLWithString:http://www.webservicex.net/globalweather.asmx];
NSMutableURLRequest*theRequest=[NSMutableUrlRequestWithURL:url]；
NSString*msgLength=[NSString stringWithFormat:@“%d”，[soapMessage length]]；
[theRequest addValue:@“text/xml；charset=utf-8”用于HttpHeaderField:@“Content Type”]；
[请求附加值：@”http://www.webserviceX.NET/GetCitiesByCountryforHTTPHeaderField:@“SOAPAction”]；
[theRequest addValue:msgLength for HttpHeaderField:@“内容长度”]；
[TheRequestSetHttpMethod:@“POST”]；
[TheRequestSetHttpBody:[soapMessage数据使用编码：NSUTF8StringEncoding]；
NSData*data=[NSURLConnection sendSynchronousRequest:theRequest returningResponse:nil错误：nil]；

NSData*data=[NSURLConnection sendSynchronousRequest:req returningResponse:nil错误：nil]；NSLog（@“%@”，数据）；因此，您甚至无法获取日志数据本身？数据获取但找到字符方法未调用.NSLog（@“%@”，data）；（convertFrom方法内部）它打印什么？这样打印…当我查看您的服务时，它看起来像一个WSDL服务。所以像这样使用它谢谢你的回复现在我像这样更改我的url但仍然不起作用url是NSString*urlString=[NSString stringWithFormat:@”；当你说它不起作用时，你得到的错误/日志是什么？-（void）parser:（NSXMLParser*）parser parserrorOccessed:（NSError*））parseError此方法称为not Call found character method..能否打印

parseError

说明并检查失败的原因？“操作无法完成。（NSXMLParserErrorDomain错误65。）”发生此错误。。