如何在iPhone中使用libxml2解析xml [英] how to parse xml using libxml2 in iphone
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问题描述
我正在从.net Web服务器获取xml形式的信息.
i am getting information in the form of xml from .net web server.
我正在使用NSXml解析器对其进行解析.
I am using NSXml parser to parse it.
但是解析需要时间.
我听说libxmll2比NSXml解析器快.
I hear that libxmll2 is faster than NSXml parser.
但是我没有找到有关如何使用它的明确信息.
But i did n't find clear info regarding how to use it.
任何人都可以发布有关如何使用libxml2进行解析的示例代码或示例.
can any one pls post sample code or example regarding how to parse using libxml2.
预先感谢你.
推荐答案
您需要使用XML解析来实现此功能.建议您使用touchXML.这是一个示例代码:
You need to use XML parsing to implement this.I suggest use touchXML. Here is a sample code for that:
-(void)callwebservice{
NSString *path = @"YOUR URL";
[self grabRSSFeed:path];
}
-(void) grabRSSFeed:(NSString *)blogAddress {
// Initialize the blogEntries MutableArray that we declared in the header
blogEntries = [[NSMutableArray alloc] init];
// Convert the supplied URL string into a usable URL object
NSURL *url = [NSURL URLWithString: blogAddress];
// Create a new rssParser object based on the TouchXML "CXMLDocument" class, this is the object that actually grabs and processes the RSS data
CXMLDocument *rssParser = [[[CXMLDocument alloc] initWithContentsOfURL:url options:0 error:nil] autorelease];
// Create a new Array object to be used with the looping of the results from the rssParser
NSArray *resultNodes = NULL;
// Set the resultNodes Array to contain an object for every instance of an node in our RSS feed
resultNodes = [rssParser nodesForXPath:@"//Node you want to parse" error:nil];
// Loop through the resultNodes to access each items actual data
for (CXMLElement *resultElement in resultNodes) {
// Create a temporary MutableDictionary to store the items fields in, which will eventually end up in blogEntries
NSMutableDictionary *blogItem = [[NSMutableDictionary alloc] init];
// Create a counter variable as type "int"
int counter;
// Loop through the children of the current node
for(counter = 0; counter < [resultElement childCount]; counter++) {
// Add each field to the blogItem Dictionary with the node name as key and node value as the value
[blogItem setObject:[[resultElement childAtIndex:counter] stringValue] forKey:[[resultElement childAtIndex:counter] name]];
NSLog(@"Data = %@",[[resultElement childAtIndex:counter] stringValue]);
}
// Add the blogItem to the global blogEntries Array so that the view can access it.
[blogEntries addObject:[blogItem copy]];
}
[YourTable reloadData];
}
在您的头文件中导入touchXML库.
Import touchXML library in you header file.
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