有两种方式：

一：NSXMLParser

 

Utility.h：

#import <Foundation/Foundation.h>
@interface Utility : NSObject {

}

//获取文件在设备上的绝对路径

+ (NSString *) pathForResource:(NSString*)resourcepath;
@end

 

Utility.m ：

 #import "Utility.h"


@implementation Utility


+ (NSString*) pathForResource:(NSString*)resourcepath
{
    NSBundle * mainBundle = [NSBundle mainBundle];
    NSMutableArray *directoryParts = [NSMutableArray arrayWithArray:[resourcepath componentsSeparatedByString:@"/"]];
    NSString       *filename       = [directoryParts lastObject];
    [directoryParts removeLastObject];
    
    NSString *directoryStr = @"Xml";
    NSString *path= [mainBundle pathForResource:filename
                                         ofType:@""
                                    inDirectory:directoryStr];
    
    return path;
}

@end

 

 - (void)viewDidLoad {

  NSURL *xmlUrl = [NSURL fileURLWithPath:[Utility pathForResource:@"SearchLog.xml"]];
     NSXMLParser *parser = [[NSXMLParser alloc] initWithContentsOfURL:xmlUrl];
        
     [parser setDelegate:self];
     [parser setShouldProcessNamespaces:NO];
     [parser setShouldReportNamespacePrefixes:NO];
     [parser setShouldResolveExternalEntities:NO];
    

　/*启动Xml解析，会触发

　　　parser:
        didStartElement:
        namespaceURI:
        qualifiedName:
        attributes:*/

　 [parser parse];
    

　　//刷新Table
    // [searchTableView reloadData];
        
     NSError *parseError = [parser parserError];
     if (parseError) {
            
     }
        
     [parser release];

 ｝

 
- (void)parser:(NSXMLParser *)parser
        didStartElement:(NSString *)elementName
        namespaceURI:(NSString *)namespaceURI
        qualifiedName:(NSString *)qName
        attributes:(NSDictionary *)attributeDict{
    
    if (qName) {
        elementName = qName;
    }
    
    if (xmlSearchParsedCounter >= 5) {
        [parser abortParsing];
    }
    
    if ([elementName isEqualToString:@"item"]) {
        xmlSearchParsedCounter++;
        NSString *value = [attributeDict valueForKey:@"value"];
        [self.searchList addObject:value];
    }
}

 二：libxml

参考：http://blog.prosight.me/index.php/2010/02/586

  1. 展开Targets
  2. 双击项目名
  3. 选择所有配置
  4. 搜索Header Search Path
  5. 加入一行并选中recursive选项： ${SDKROOT}/usr/include/libxml2
  6. 搜索Other Linker Flag
  7. 加入一行：-lxml2

Utility.h:


#import <Foundation/Foundation.h>
#import "TFHpple.h"

@interface Utility : NSObject {

}

+ (NSString *) pathForResource:(NSString*)resourcepath;
+ (NSMutableArray *)getXmlWithFileName:(NSString  *)fileName XPath: (NSString *)xpath;

@end

 

Utility.m:

 
#import "Utility.h"


@implementation Utility


+ (NSString*) pathForResource:(NSString*)resourcepath
{
    NSBundle * mainBundle = [NSBundle mainBundle];
    NSMutableArray *directoryParts = [NSMutableArray arrayWithArray:[resourcepath componentsSeparatedByString:@"/"]];
    NSString       *filename       = [directoryParts lastObject];
    [directoryParts removeLastObject];
    
    NSString *directoryStr = @"Xml";
    NSString *path= [mainBundle pathForResource:filename
                                         ofType:@""
                                    inDirectory:directoryStr];
    
    return path;
}


+ (NSMutableArray *)getXmlWithFileName:(NSString  *)fileName XPath: (NSString *)xpath{
    NSURL *xmlUrl = [NSURL fileURLWithPath:[Utility pathForResource:fileName]];
    
    NSData *data = [[NSData alloc] initWithContentsOfURL:xmlUrl];
    
    TFHpple *xpathParser = [[TFHpple alloc] initWithXMLData:data];        
    NSArray *elements  = [xpathParser search:xpath];
    NSMutableArray *array = [[NSMutableArray alloc] init];
    for(TFHppleElement *element in elements) {
        [array addObject:[element content]];
    }
    
    [xpathParser release];
    [data release];
    
    return array;
}

@end

 

 调用例子：

 searchList = [Utility getXmlWithFileName:@"SearchLog.xml" XPath:@"//SearchLog/Item/text()"];