如何从服务器解析XML文件？

Question

我已经搜查了很多，但没有一个教程和示例代码的帮助。我试图解析一个非常简单的XML数据，这将是永远只有一个结果相同，将XML代码波纹管：

<Books> 
    <Book id="1"> 
     <title>USERS ALREADY EXISTS</title> 
    </Book> 
</Books> 

所以，我怎么能使用NSXMLParser或其他方式，您解析这样的文件知道？

Answer 1

嗯，我解析XML比其他一些不同的方式，并坦白我真的不知道它是技术，但我向你保证，它工作正常，我和我已经在很多项目顺利Implemeted一个吧。看看我的代码，我从一些profile

此负载鸣叫是我作出呼吁分析器功能。

-(void)loadtweet 
{ 
@try 
{ 
    NSString *urlString = [NSString stringWithFormat:@"https://api.twitter.com/1/statuses/user_timeline.xml?screen_name=SrBachchan&count=5"]; 

    NSLog(@"fetching data from--------> : %@",urlString); 

    NSString* escapedUrlString = [urlString stringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding]; 

    NSMutableURLRequest *request1 = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:escapedUrlString]]; 

    NSURLConnection *con=[[NSURLConnection alloc] initWithRequest:request1 delegate:self]; 
    if(con) 
     truckData=[[NSMutableData data]retain]; 
} 

@catch (NSException *exception) 
{ 
    UIAlertView *v = [[UIAlertView alloc] initWithTitle:@"ERROR" message:@"Please Try Again Later." delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil]; 
    [v show]; 
    [v release]; 
} 

} 

而这些都是NSURLConnection委托方法：

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response 
{ 
[truckData setLength:0]; 
} 

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data 
{ 
[truckData appendData:data]; 
} 

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error 
{ 

} 

- (void)connectionDidFinishLoading:(NSURLConnection *)connection 

{ 
    [tweets removeAllObjects]; 
@try 
{ 
    // [app.trucks removeAllObjects]; 
    NSString *thexml=[[NSString alloc] initWithBytes:[truckData mutableBytes] length:[truckData length] encoding:NSUTF8StringEncoding]; 

    NSArray *array=[thexml componentsSeparatedByString:@"<status>"]; 
    NSLog(@"%d",[array count]); 

    for(int i=1;i<[array count];i++) 
    { 
     NSString *str=[array objectAtIndex:i]; 
     NSArray *arr1=[str componentsSeparatedByString:@"<text>"]; 
     NSString *data=[arr1 objectAtIndex:1]; 
     NSRange ranfrom=[data rangeOfString:@"</text>"]; 
     // nt.truckName=[data substringToIndex:ranfrom.location]; 
     [tweets addObject:[data substringToIndex:ranfrom.location]]; 
    } 
} 

@catch (NSException *exception) 
{ 
    UIAlertView *v = [[UIAlertView alloc] initWithTitle:@"ERROR" message:@"Please Try Again Later." delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil]; 
    [v show]; 
    [v release]; 
} 

} 

我已经使用了一些字符串函数分开标签并存储在排列值。