参考文章 http://blog.****.net/ryantang03/article/details/7868246
适合解析一个节点多个属性要用GDataXml 格式如下
<?xml version="1.0" encoding="UTF-8"?>
<result spend_time="16ms">>
<data>
<item wait_count="4"max_wait_time="10"branch_id="0">
<item wait_count="0"max_wait_time="7" branch_id="232051000" />
<item wait_count="0"max_wait_time="4" branch_id="232051001" />
</item>
</data>
</result>
NSString *path=[[NSBundle mainBundle] pathForResource:@"" ofType:@"xml"];
NSData *data=[[NSData alloc] initWithContentsOfFile:path];
GDataXMLDocument *doc=[[GDataXMLDocument alloc] initWithData:data options: error:nil];
//获取根节点
GDataXMLElement *rootElement=doc.rootElement; NSArray *arr=[rootElement nodesForXPath:@"//item/item" error:nil];
for (GDataXMLElement *ele in arr) {
NSLog(@"-->%@--->%@",[[ele attributeForName:@"wait_count"]stringValue],[[ele attributeForName:@"branch_name"]stringValue]);
}
一个节点一个属性,推荐使用下面方法
<?xml version="1.0" encoding="utf-8"?>
<Users>
<User id="001">
<name>Ryan</name>
<age>24</age>
</User>
<User id="002">
<name>Tang</name>
<age>23</age>
</User>
</Users>
封装方法
#import <Foundation/Foundation.h> @protocol UseXmlParser <NSObject> @optional
- (void)NetWorkBackConnectID:(int)connectID BackDic:(NSMutableDictionary*)aBackDic WithNetState:(int)netState; @end @interface UseXmlParser : NSObject<NSXMLParserDelegate>
{
id aTarget;
int aConnectId; NSMutableData *parData; NSXMLParser *xmlParser; NSMutableArray *dicNameArray;
BOOL endStringElement;
NSMutableString *keyString;
NSMutableDictionary *xmlDataSource;
}
-(id)initWithParserData:(NSData*)pData target:(id)toTarget connectId:(int)bConnectId; -(void)parser; @end ==========
#import "UseXmlParser.h" @implementation UseXmlParser -(id)initWithParserData:(NSData*)pData target:(id)toTarget connectId:(int)bConnectId{
if (self = [super init]) { aTarget = toTarget;
aConnectId = bConnectId; dicNameArray = [[NSMutableArray alloc] initWithCapacity:];
keyString = [[NSMutableString alloc] initWithCapacity:];
xmlDataSource=[[NSMutableDictionary alloc] initWithCapacity:];
endStringElement = FALSE; parData = [[NSMutableData alloc] initWithData:pData]; }
return self;
}
-(void)parser{
xmlParser = [[NSXMLParser alloc] initWithData:parData];
[xmlParser setDelegate:self];
[xmlParser parse];//开始解析
[xmlParser release];
} -(NSMutableDictionary*) getDic {
NSMutableDictionary *dic=xmlDataSource;
for (int i=; i<[dicNameArray count]; i++) {
dic=[dic objectForKey:(NSString*)[dicNameArray objectAtIndex:i]];
}
return dic;
}
- (NSString*)getListElement:(NSString*)elementName From:(NSArray*)array {
NSString *temp = elementName;
for (int i=; i<; i++) {
if ([array containsObject:elementName]) {
elementName = [NSString stringWithFormat:@"%@%d", temp, i+];
}
else {
return elementName;
}
}
return nil;
}
- (id)getStringByKey:(NSString*)key {
NSArray *array = [key componentsSeparatedByString:@"/"];
NSDictionary *dic = [NSDictionary dictionary];
for (int i=; i<[array count]-; i++) {
dic = [dic objectForKey:[array objectAtIndex:i]];
}
NSString *temp = [dic objectForKey:[array objectAtIndex:[array count]-]];
if (!temp) {
temp = @"";
}
return temp;
}
-(void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict{
if ([dicNameArray count]>) {
NSMutableDictionary *dic = [self getDic];
elementName = [self getListElement:elementName From:[dic allKeys]]; [dic setObject:[[NSMutableDictionary alloc] init] forKey:elementName];
[dicNameArray addObject:elementName];
}
else {
[xmlDataSource setObject:[[NSMutableDictionary alloc] init] forKey:elementName];
[dicNameArray addObject:elementName];
} endStringElement = TRUE;
[keyString setString:@""];
} -(void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string{
[keyString appendString:string];
}
- (NSMutableDictionary*)getLastDic {
NSMutableDictionary *dic=xmlDataSource;
for (int i=; i<[dicNameArray count]-; i++) {
dic=[dic objectForKey:(NSString*)[dicNameArray objectAtIndex:i]];
}
return dic;
}
-(void) removeLastDic {
if ([dicNameArray count]>) {
[dicNameArray removeLastObject];
}
}
-(void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName{
if (endStringElement) {
if (![keyString isEqualToString:@"\n"]) {
if ([keyString hasPrefix:@"\n"]) {
[keyString setString:[keyString substringFromIndex:]];
}
NSMutableDictionary *dic = [self getLastDic];
[dic setObject:[NSString stringWithString:keyString] forKey:[dicNameArray objectAtIndex:[dicNameArray count]-]];
}
} [keyString setString:@""];
endStringElement = FALSE;
[self removeLastDic]; }
- (void)parserDidEndDocument:(NSXMLParser *)parser {
NSLog(@" \nxml解析返回-->> %@",xmlDataSource);
if (aTarget && [aTarget respondsToSelector:@selector(NetWorkBackConnectID:BackDic:WithNetState:)]) {
[aTarget NetWorkBackConnectID:aConnectId BackDic:xmlDataSource WithNetState:];
}
} -(void)parser:(NSXMLParser *)parser parseErrorOccurred:(NSError *)parseError{
NSLog(@"--error-->%@",parseError.localizedDescription);
}
-(void)dealloc{ [dicNameArray release];
[keyString release];
[xmlDataSource release];
[super dealloc];
}
@end
使用方式
- (IBAction)click:(id)sender { UseXmlParser *parser1=[[UseXmlParser alloc] initWithParserData:data target:self connectId:];
[parser1 parser];
[parser1 release];
} - (void)NetWorkBackConnectID:(int)connectID BackDic:(NSMutableDictionary*)aBackDic WithNetState:(int)netState{
NSLog(@"--%@",aBackDic);
}