我的Web-Service中有以下格式的XML。
<xml>
<Menu>
<pair>
<MenuCategory shortname="Starters Menu" description_en="hgfhghgh" image="Small.jpg" description_fr="" description_ge="" description_it="" description_sp="" description_ch="">
<MenuItems>
<menuItem price="666" image="060649XSmall.jpg" shortname="kandan" description_en="kandan" description_fr="" description_ge="" description_it="" description_sp="" description_ch=""/>
<menuItem price="250" image="3.jpg" shortname="Vegetable Soups" description_en="Vegetable Soups" description_fr="" description_ge="" description_it="" description_sp="" description_ch=""/>
<menuItem price="52" image="3.jpg" shortname="Mixed Starters" description_en="Mixed Starters" description_fr="" description_ge="" description_it="" description_sp="" description_ch=""/>
<menuItem price="45" image="14.jpg" shortname="Pumpkin soup" description_en="Pumpkin soup" description_fr="" description_ge="" description_it="" description_sp="" description_ch=""/>
<menuItem price="15" image="15.jpg" shortname="Almondrolledgoatsche" description_en="Almondrolledgoatsche" description_fr="" description_ge="" description_it="" description_sp="" description_ch=""/>
</MenuItems>
</MenuCategory>
</pair>
</Menu>
</xml>
我已经尝试从我的web服务使用TBXML解析这个XML。但是，还没有得到我的输出
TBXML *XML = [[TBXML alloc]initWithURL:[NSURL URLWithString:urlString]];
TBXMLElement *rootXML = XML.rootXMLElement;
TBXMLElement *e = [TBXML childElementNamed:@"MenuItems" parentElement:rootXML];
NSString *woeid = [TBXML textForElement:e->firstChild];
NSLog(@"Woeid - %@", woeid);
简单地抛出EXEC_BAD_ACCESS错误。我只需要将这个xml解析为我的NSMutableArray，有很多与此相关的例子。但是，不知道哪一个适合我的要求。有人以这种形式工作过吗?知道怎么做吗?
您可以使用XMLReader文件将xml数据解析为NSDictionary或NSArray或MutableArray。使用它:
NSError *error=nil;
NSString *responseString=[NSString stringWithFormat:@"<xml><Menu><pair><MenuCategory shortname="Starters Menu" description_en="hgfhghgh" image="Small.jpg" description_fr="" description_ge="" description_it="" description_sp="" description_ch=""><MenuItems><menuItem price="666" image="060649XSmall.jpg" shortname="kandan" description_en="kandan" description_fr="" description_ge="" description_it="" description_sp="" description_ch=""/><menuItem price="250" image="3.jpg" shortname="Vegetable Soups" description_en="Vegetable Soups" description_fr="" description_ge="" description_it="" description_sp="" description_ch=""/><menuItem price="52" image="3.jpg" shortname="Mixed Starters" description_en="Mixed Starters" description_fr="" description_ge="" description_it="" description_sp="" description_ch=""/><menuItem price="45" image="14.jpg" shortname="Pumpkin soup" description_en="Pumpkin soup" description_fr="" description_ge="" description_it="" description_sp="" description_ch=""/><menuItem price="15" image="15.jpg" shortname="Almondrolledgoatsche" description_en="Almondrolledgoatsche" description_fr="" description_ge="" description_it="" description_sp="" description_ch=""/></MenuItems></MenuCategory></pair></Menu></xml>"];
NSDictionary *dictionary=[XMLReader dictionaryForXMLString:responseString error:&error];
NSLog(@"dictioanry is %@",dictionary);
NSMutableArray *menuItemsArray=[[NSMutableArray alloc] initWithArray:[[[[[[dictionary valueForKey:@"xml"] valueForKey:@"Menu"] valueForKey:@"pair"] valueForKey:@"MenuCategory"] valueForKey:@"MenuItems"] valueForKey:@"menuItem"]];
NSLog(@"menu item array is %@",menuItemsArray);
控制台日志 :--------
dictioanry is {
xml = {
Menu = {
pair = {
MenuCategory = {
MenuItems = {
menuItem = (
{
"description_ch" = "";
"description_en" = kandan;
"description_fr" = "";
"description_ge" = "";
"description_it" = "";
"description_sp" = "";
image = "060649XSmall.jpg";
price = 666;
shortname = kandan;
},
{
"description_ch" = "";
"description_en" = "Vegetable Soups";
"description_fr" = "";
"description_ge" = "";
"description_it" = "";
"description_sp" = "";
image = "3.jpg";
price = 250;
shortname = "Vegetable Soups";
},
{
"description_ch" = "";
"description_en" = "Mixed Starters";
"description_fr" = "";
"description_ge" = "";
"description_it" = "";
"description_sp" = "";
image = "3.jpg";
price = 52;
shortname = "Mixed Starters";
},
{
"description_ch" = "";
"description_en" = "Pumpkin soup";
"description_fr" = "";
"description_ge" = "";
"description_it" = "";
"description_sp" = "";
image = "14.jpg";
price = 45;
shortname = "Pumpkin soup";
},
{
"description_ch" = "";
"description_en" = Almondrolledgoatsche;
"description_fr" = "";
"description_ge" = "";
"description_it" = "";
"description_sp" = "";
image = "15.jpg";
price = 15;
shortname = Almondrolledgoatsche;
}
);
};
"description_ch" = "";
"description_en" = hgfhghgh;
"description_fr" = "";
"description_ge" = "";
"description_it" = "";
"description_sp" = "";
image = "Small.jpg";
shortname = "Starters Menu";
};
};
};
};
}
2013-03-06 11:52:31.500 MobileTrading[1212:11303] menu item array is (
{
"description_ch" = "";
"description_en" = kandan;
"description_fr" = "";
"description_ge" = "";
"description_it" = "";
"description_sp" = "";
image = "060649XSmall.jpg";
price = 666;
shortname = kandan;
},
{
"description_ch" = "";
"description_en" = "Vegetable Soups";
"description_fr" = "";
"description_ge" = "";
"description_it" = "";
"description_sp" = "";
image = "3.jpg";
price = 250;
shortname = "Vegetable Soups";
},
{
"description_ch" = "";
"description_en" = "Mixed Starters";
"description_fr" = "";
"description_ge" = "";
"description_it" = "";
"description_sp" = "";
image = "3.jpg";
price = 52;
shortname = "Mixed Starters";
},
{
"description_ch" = "";
"description_en" = "Pumpkin soup";
"description_fr" = "";
"description_ge" = "";
"description_it" = "";
"description_sp" = "";
image = "14.jpg";
price = 45;
shortname = "Pumpkin soup";
},
{
"description_ch" = "";
"description_en" = Almondrolledgoatsche;
"description_fr" = "";
"description_ge" = "";
"description_it" = "";
"description_sp" = "";
image = "15.jpg";
price = 15;
shortname = Almondrolledgoatsche;
}
)
@Praveen读取属性代替元素
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qualifiedName attributes:(NSDictionary *)attributeDict
我想下面的代码可能会对您有所帮助。您选择TBXML进行xml解析是很好的选择。
in .h file
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController<NSXMLParserDelegate>
{
NSMutableArray *dictionaryStack;
NSMutableString *textInProgress;
NSError **errorPointer;
}
+ (NSDictionary *)dictionaryForXMLData:(NSData *)data error:(NSError **)errorPointer;
+ (NSDictionary *)dictionaryForXMLString:(NSString *)string error:(NSError **)errorPointer;
@end
in .m file
NSString *const kXMLReaderTextNodeKey = @"text";
@interface ViewController ()
- (id)initWithError:(NSError **)error;
- (NSDictionary *)objectWithData:(NSData *)data;
@end
@implementation ViewController
- (void)viewDidLoad{
NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:@"Your URL Here"]];
NSError *parseError = nil;
NSDictionary *xmlDictionary = [ViewController dictionaryForXMLData:data error:&parseError]; // Print the dictionary
NSLog(@"%@",xmlDictionary);
}
+ (NSDictionary *)dictionaryForXMLData:(NSData *)data error:(NSError **)error
{
ViewController *reader = [[ViewController alloc] initWithError:error];
NSDictionary *rootDictionary = [reader objectWithData:data];
[reader release];
return rootDictionary;
}
+ (NSDictionary *)dictionaryForXMLString:(NSString *)string error:(NSError **)error
{
NSData *data = [string dataUsingEncoding:NSUTF8StringEncoding];
return [ViewController dictionaryForXMLData:data error:error];
}
- (id)initWithError:(NSError **)error
{
if (self = [super init])
{
errorPointer = error;
}
return self;
}
- (void)dealloc
{
[dictionaryStack release];
[textInProgress release];
[super dealloc];
}
- (NSDictionary *)objectWithData:(NSData *)data
{
// Clear out any old data
[dictionaryStack release];
[textInProgress release];
dictionaryStack = [[NSMutableArray alloc] init];
textInProgress = [[NSMutableString alloc] init];
// Initialize the stack with a fresh dictionary
[dictionaryStack addObject:[NSMutableDictionary dictionary]];
// Parse the XML
NSXMLParser *parser = [[NSXMLParser alloc] initWithData:data];
parser.delegate = self;
BOOL success = [parser parse];
// Return the stack’s root dictionary on success
if (success)
{
NSDictionary *resultDict = [dictionaryStack objectAtIndex:0];
return resultDict;
}
return nil;
}
#pragma mark -
#pragma mark NSXMLParserDelegate methods
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict
{
// Get the dictionary for the current level in the stack
NSMutableDictionary *parentDict = [dictionaryStack lastObject];
// Create the child dictionary for the new element, and initilaize it with the attributes
NSMutableDictionary *childDict = [NSMutableDictionary dictionary];
[childDict addEntriesFromDictionary:attributeDict];
// If there’s already an item for this key, it means we need to create an array
id existingValue = [parentDict objectForKey:elementName];
if (existingValue)
{
NSMutableArray *array = nil;
if ([existingValue isKindOfClass:[NSMutableArray class]])
{
// The array exists, so use it
array = (NSMutableArray *) existingValue;
}
else
{
// Create an array if it doesn’t exist
array = [NSMutableArray array];
[array addObject:existingValue];
// Replace the child dictionary with an array of children dictionaries
[parentDict setObject:array forKey:elementName];
}
// Add the new child dictionary to the array
[array addObject:childDict];
}
else
{
// No existing value, so update the dictionary
[parentDict setObject:childDict forKey:elementName];
}
// Update the stack
[dictionaryStack addObject:childDict];
}
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
// Update the parent dict with text info
NSMutableDictionary *dictInProgress = [dictionaryStack lastObject];
// Set the text property
if ([textInProgress length] > 0)
{
// Get rid of leading + trailing whitespace
[dictInProgress setObject:textInProgress forKey:kXMLReaderTextNodeKey];
// Reset the text
[textInProgress release];
textInProgress = [[NSMutableString alloc] init];
}
// Pop the current dict
[dictionaryStack removeLastObject];
}
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
{
// Build the text value
[textInProgress appendString:string];
}
- (void)parser:(NSXMLParser *)parser parseErrorOccurred:(NSError *)parseError
{
// Set the error pointer to the parser’s error object
*errorPointer = parseError;
}
@end
希望这有帮助!!
使用NSMutableRequest从URL获取数据
NSString *stringURL=[NSString stringWithFormat:@"http://yourURL"];
NSURL *url=[NSURL URLWithString:stringURL];
NSMutableURLRequest *request=[NSMutableURLRequest requestWithURL:url];
NSError *error;
NSURLResponse *response;
NSData *urlData=[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
NSString *responseString=[[NSString alloc] initWithData:urlData encoding:NSUTF8StringEncoding];
NSDictionary *dictionary=[XMLReader dictionaryForXMLString:responseString error:&error];
如果你想使用NSXMLParser，那就使用它。
- (void)viewDidLoad
{
NSURL *url = [[NSURL alloc]initWithString:@"yourURL"];
NSXMLParser *parser = [[NSXMLParser alloc]initWithContentsOfURL:url];
[parser setDelegate:self];
BOOL result = [parser parse];
}
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qualifiedName attributes:(NSDictionary *)attributeDict
{
NSLog(@"Did start element");
if ( [elementName isEqualToString:@"root"])
{
NSLog(@"found rootElement");
return;
}
}
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
NSLog(@"Did end element");
if ([elementName isEqualToString:@"root"])
{
NSLog(@"rootelement end");
}
}
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
{
if([currentElementName isEqualToString:@"column"])
{
NSLog(@"Value %@",string);
}
}