在 ios 7 xcode 5.0.2 中使用 .Net Web 服务

Question

我创建了一个 .net Web 服务，它接受一个参数（int DishId）并返回一个带有属性的 XML 文件：

<Dish xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://tempuri.org/">
<Menu_Id>3</Menu_Id>
<Dish_Name>DNN</Dish_Name>
<Dish_Description>DD</Dish_Description>
<Dish_Price>1555</Dish_Price>
<Dish_Ingredients>DI</Dish_Ingredients>
<Dish_Picture>images/smile.png</Dish_Picture>
<Dish_Category>3</Dish_Category>
</Dish>

所以在搜索了如何在 iOS Xcode 5.0.2 中使用 Web 服务之后。我遵循了 SOAP 方法。我点击了这个链接：Consuming XML Web Services in iPhone Applications

我创建了一个新页面，其中包含标签、文本字段（“下面代码中的菜号”）、按钮、活动指示器。

所以对于按钮操作，我创建了以下代码：

- (IBAction)buttonClicked:(id)sender
{
    NSString *soapMsg = [NSString stringWithFormat:@"<?xml version=\"1.0\" encoding=\"utf-8\"?>\
    <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>\
     <GetDish xmlns=\"http://www.tempuri.org/\">\
     <dishId>%@</dishId>\
     </GetDish>\
     </soap:Body>\
     </soap:Envelope>",
     dishNumber.text
     ];

    //---print it to the Debugger Console for verification---
    NSLog(soapMsg);

    NSURL *url = [NSURL URLWithString: @"http://urllocalhost/mywebservice.asmx"];

    NSMutableURLRequest *req = [NSMutableURLRequest requestWithURL:url];

    //---set the headers---
    NSString *msgLength = [NSString stringWithFormat:@"%d", [soapMsg length]];

    [req addValue:@"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];
    [req addValue:@"http://www.tempuri.org/GetDish" forHTTPHeaderField:@"SOAPAction"];
    [req addValue:msgLength forHTTPHeaderField:@"Content-Length"];

    //---set the HTTP method and body---
    [req setHTTPMethod:@"POST"];
    [req setHTTPBody: [soapMsg dataUsingEncoding:NSUTF8StringEncoding]];

    [activityIndicator startAnimating];

    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];
}


-(void) connectionDidFinishLoading:(NSURLConnection *) connection
{
    NSLog(@"DONE. Received Bytes: %d", [webData length]);

    NSString *theXML = [[NSString alloc] initWithBytes:[webData mutableBytes]
                                                length:[webData length]
                                              encoding:NSUTF8StringEncoding];
    //---shows the XML---
    NSLog(theXML);

    [activityIndicator stopAnimating];
}

所以在运行这段代码之后，一切看起来都很好。但这里的问题是系统只能从我的 XML 文件中返回整数属性，例如 Menu_Id、dish_Price、dish_category，其值都为 0。

这是点击按钮后通过NSLog获取的消息：

2013-12-30 11:24:00.608 ws[6468:70b] soap message :<?xml version="1.0" encoding="utf-8"?><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><GetDish xmlns="http://www.tempuri.org/"><dishId>3</dishId></GetDish></soap:Body></soap:Envelope>

2013-12-30 11:24:01.489 ws[6468:70b] DONE. Received Bytes: 420

<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><soap:Body><GetDishResponse xmlns="http://tempuri.org/"><GetDishResult><Menu_Id>0</Menu_Id><Dish_Price>0</Dish_Price><Dish_Categorie>0</Dish_Categorie></GetDishResult></GetDishResponse></soap:Body></soap:Envelope>

所以任何人都可以帮助解决这个问题。提前致谢。

Answer 1

您是否考虑过使用工具为您的 Xcode 项目生成代理类？使用代理类将抽象 xml 与您的服务来回穿梭。

我对这些特定工​​具没有任何经验，但希望它们能让您更轻松地使用您的服务：

wsdl2objc - https://code.google.com/p/wsdl2objc/

Sudzc（在线实用程序）-http://www.sudzc.com/

Wsdl2Code（在线实用程序）-http://www.wsdl2code.com/pages/home.aspx

Answer 2

SOAP 信封可能只有一个问题。

用这行替换soapMsg，告诉我你得到了什么。

NSString *soapMsg = [NSString stringWithFormat:@"<?xml version=\"1.0\" encoding=\"utf-8\"?>"
                     "<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>"
                     "<GetDish xmlns=\"http://tempuri.org/\">"
                     "<dishId>%@</dishId>"
                     "</GetDish>"
                     "</soap:Body>"
                     "</soap:Envelope>",
                     dishNumber.text
                     ];

Answer 3

conn = [[NSURLConnection alloc] initWithRequest:req delegate:self]; 请输入 conn 的标识符名称，即

NSURLConnection *conn = [[NSURLConnection alloc] initWithRequest:req delegate:self]; 还提到它的代表