I am not able to parse xml data using GDataXML

Question

At first i have imported #import "GDataXMLNode.h" in .h file. Now this is my XML which i have to parse using GDataXML parser.

<SiteStats>
   <visitor>1</visitor>
   <uniqueVisitor>1</uniqueVisitor>
   <orderCount>0</orderCount>
   <revenue>null</revenue>
   <conversionRate>0</conversionRate>
   <newProduct>3</newProduct>
   <outOfStockProduct>0</outOfStockProduct>
</SiteStats>

Now, one thing to notice is that my this xml is coming from web. So I have used NSUrlConnection delegate to retrieve xml data.

- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
    responseString = [[NSString alloc] initWithData:receivedData encoding:NSUTF8StringEncoding];
    NSLog(@"Response: %@",responseString);
    // other stuff here...
}

Here I get the responseString and then I parse it using the following code. But I'm not able to parse it.

 xmlDocument = [[GDataXMLDocument alloc] initWithXMLString:responseString options:0 error:&errorOnStore];
if (nil == xmlDocument)    {
    NSLog(@"could not load xml file");
}
else    {
    NSLog(@"Loading desire xml");
    NSLog(@"%@", xmlDocument.rootElement);
    NSArray *getData = [[xmlDocument rootElement] elementsForName:@"SiteStats"];
    NSLog(@"%@",getData);
    records = [[NSMutableArray alloc] init];
    //[records retain];
    if(getData.count !=0 ){
        NSLog(@"data has");
    }
    //storing the car model in the mutable array
    for(GDataXMLElement *e in getData){
        NSLog(@"Enering in the xml file");
        [records addObject:e];

        NSString *Visitor = [[[e elementsForName:@"visitor"] objectAtIndex:0] stringValue];
        NSLog(@"Visitor : %@",Visitor);

        NSString *UVisitor = [[[e elementsForName:@"uniqueVisitor"] objectAtIndex:0] stringValue];
        NSLog(@"Unique Visitor : %@",UVisitor);
    }
}

I can get this value when i NSLog(@"%@", xmlDocument.rootElement);

 GDataXMLElement 0x1a4290: {type:1 name:SiteStats xml:"<SiteStats><visitor>4</visitor><uniqueVisitor>3</uniqueVisitor><orderCount>0</orderCount><revenue>0</revenue><conversionRate>0</conversionRate><newProduct>3</newProduct><outOfStockProduct>0</outOfStockProduct></SiteStats>"}

But i use NSLog(@"%@",getData); I do not get any data in getData array.

Can anybody tell me where is the problem? Thank you in advance.

where is the error? maybe post the output of your NSLog as well — X Slash, Jan 24 '12 at 12:26
`NSLog(@"%@",getData);` print `(null)`.Please some how anybody help me. — Yamen Emon, Jan 25 '12 at 03:28

X Slash · Accepted Answer · 2012-01-25T04:29:55.413

xmlDocument = [[GDataXMLDocument alloc] initWithXMLString:responseString options:0 error:&errorOnStore];
if (nil == xmlDocument)    
{
    NSLog(@"could not load xml file");
}
else    
{
    NSLog(@"Loading desire xml");
    NSLog(@"%@", xmlDocument.rootElement);

    // skip this bits, you're trying to retrieve wrong element
    //NSArray *getData = [[xmlDocument rootElement] elementsForName:@"SiteStats"];
    //NSLog(@"%@",getData);
    records = [[NSMutableArray alloc] init];
    //[records retain];
    //if(getData.count !=0 )
    //{
        //NSLog(@"data has");
    //}
    //storing the car model in the mutable array
    //for(GDataXMLElement *e in getData)
    //{
        //NSLog(@"Enering in the xml file");
        //[records addObject:e];

        NSString *Visitor = [[[xmlDocument.rootElement elementsForName:@"visitor"] objectAtIndex:0] stringValue];
        NSLog(@"Visitor : %@",Visitor);

        NSString *UVisitor = [[[xmlDocument.rootElement elementsForName:@"uniqueVisitor"] objectAtIndex:0] stringValue];
        NSLog(@"Unique Visitor : %@",UVisitor);
    //}
}

EDIT: NSArray *getData = [[xmlDocument rootElement] elementsForName:@"SiteStats"]; in this line, you're trying to retrieve wrong element, element "SiteStats" is already the root element, so when you do that bit of code, what you're trying to do is looking for "SiteStats" inside of "SideStats"

<SiteStats>
   <SiteStats>
       <visitor>1</visitor>
       <uniqueVisitor>1</uniqueVisitor>
       <orderCount>0</orderCount>
       <revenue>null</revenue>
       <conversionRate>0</conversionRate>
       <newProduct>3</newProduct>
       <outOfStockProduct>0</outOfStockProduct>
   </SiteStats>
</SiteStats>

Your orignal code is likely to work if your XML looks something like above

Can you tell me why i am not getting data in the array???Though your answer is awesome. — Yamen Emon, Jan 25 '12 at 04:17

score 0 · Answer 2 · edited Jan 18 '13 at 09:47

0

To allow the parsing you may also need to change the attribute "xmlns" in the tag

< html > by noNSxml. If this is not done then it will parse incorrectly.

edited Jan 18 '13 at 09:47

Gaz Winter

2,924
2
25
47

answered Jan 18 '13 at 09:21

Megaman

149
12

I am not able to parse xml data using GDataXML

2 Answers2

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