解析属性XML

Question

我是iOS应用程序开发新手，遇到问题。

XML

<?xml version="1.0" encoding="UTF-8"?> 
<Books> 
    <Book id="1"> 
    <title_1>Circumference</title_1> 
    <author>Nicholas Nicastro</author> 
    <summary>Eratosthenes and the Ancient Quest to Measure the Globe.</summary> 
</Book> 
    <Book id="2"> 
    <title_1>Copernicus Secret</title_1> 
    <author>Jack Repcheck</author> 
    <summary>How the scientific revolution began</summary> 
</Book> 
    <Book id="3"> 
    <title_1>Angels and Demons</title_1> 
    <author>Dan Brown</author> 
    <summary>Robert Langdon is summoned to a Swiss research facility to analyze a cryptic symbol seared into the chest of a murdered physicist.</summary> 
</Book> 
    <Book id="4"> 
    <title_1>Keep the Aspidistra Flying</title_1> 
    <author>George Orwell</author> 
    <summary>A poignant and ultimately hopeful look at class and society, Keep the Aspidistra Flying pays tribute to the stubborn virtues of ordinary people who keep the aspidistra flying.</summary> 
</Book> 
</Books> 

CODE

- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName 
namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qualifiedName 
    attributes:(NSDictionary *)attributeDict { 

    if([elementName isEqualToString:@"Books"]) 
    { 
     data_array = [[NSMutableArray alloc] init]; 
    } 
    else if([elementName isEqualToString:@"Book"]) 
    { 

     bookID= [[attributeDict objectForKey:@"id"]integerValue]; 

     NSLog(@"Reading id value :%d",bookID); 


    //NSLog(@"Processing Element: %@",elementName); 
    } 

} 

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


    if(!test_string) 
    { 
     test_string = [[NSMutableString alloc] initWithString:string]; 
} 
    else 
    { 
     [test_string appendString:string]; 
    } 
    //NSLog(@"Processing Value: %@",test_string); 

} 

- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName 
    namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName { 

    if([elementName isEqualToString:@"Books"]) 

     return; 

    if ([elementName isEqualToString:@"Book"]) 
    { 
     [data_array addObject:test_string]; 


    } 
    else 

    test_string = nil; 
     } 

如果我按照这个方法，然后它会跳过第一本书，并只显示最后的三本书。

如果我把test_string=nil在if块，而不是别的话，就说明它的作者姓名以及

- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName 
    namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName { 

    if([elementName isEqualToString:@"Books"]) 

     return; 

    if ([elementName isEqualToString:@"Book"]) 
    { 
     [data_array addObject:test_string]; 

     test_string = nil; 
     // data_array = nil; 
    } 

     } 

另外我也得到一些空间时，它显示在我的表视图。

Answer 1

更改didStartElement:方法，如：

- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName 
namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qualifiedName 
    attributes:(NSDictionary *)attributeDict { 

    if([elementName isEqualToString:@"Books"]) 
    { 
     data_array = [[NSMutableArray alloc] init]; 
    } 
    else if([elementName isEqualToString:@"Book"]) 
    { 

     bookID= [[attributeDict objectForKey:@"id"]integerValue]; 
     test_string = nil; 
     NSLog(@"Reading id value :%d",bookID); 

    } 
    else if([elementName isEqualToString:@"title_1"]) 
    { 
     test_string = [[NSMutableString alloc] init]; 
    } 
} 

更改didEndElement:方法，如：

- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName 
    namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName { 

    if([elementName isEqualToString:@"Books"]) 

     return; 

    if ([elementName isEqualToString:@"title_1"]) 
    { 
     [data_array addObject:test_string]; 

     test_string = nil; 
    } 
} 

Answer 2

在这里你可以看到一个良好的链接Attributed XML ParsingYou Can see the XML file .it looks similar your XML file教程。 在本教程中，他们将数据存储在Model Object (NSObject Class)中。 而且每当他们需要时Data他们只是从Model Class获得数据。

Here the tutorial Link...

我希望你可能会得到上述一些帮助的形式....