我需要从webservicex.net、for 和 iPhone App 中解析以下 xml。我需要将经文存储Verse到BibleWords一些 NSArray/NSDictionary 或其他东西中。
<string xmlns="http://www.webserviceX.NET">
<NewDataSet>
<Table>
<Book>1</Book>
<BookTitle>Genesis</BookTitle>
<Chapter>1</Chapter>
<Verse>1</Verse>
<BibleWords>In the beginning God created the heaven and the earth.</BibleWords>
</Table>
<Table>
<Book>1</Book>
<BookTitle>Genesis</BookTitle>
<Chapter>1</Chapter>
<Verse>2</Verse>
<BibleWords>And the earth was without form, and void; and darkness was upon the face of the deep. And the Spirit of God moved upon the face of the waters.</BibleWords>
</Table>
<Table>
<Book>1</Book>
<BookTitle>Genesis</BookTitle>
<Chapter>1</Chapter>
<Verse>3</Verse>
<BibleWords>And God said, Let there be light: and there was light.</BibleWords>
</Table>
<Table>
<Book>1</Book>
<BookTitle>Genesis</BookTitle>
<Chapter>1</Chapter>
<Verse>4</Verse>
<BibleWords>And God saw the light, that it was good: and God divided the light from the darkness.</BibleWords>
</Table>
</NewDataSet>
</string>
我编写了以下代码来解析数据。
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict {
if ([elementName isEqualToString:@"string"]) {
model = [[Model alloc]init];
}
}
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string {
if(!currentElementValue) {
currentElementValue = [[NSMutableString alloc]initWithString:string];
}
else {
[currentElementValue appendString:string];
}
NSLog(@"%@", currentElementValue);
}
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName {
if ([elementName isEqualToString:@"NewDataSet"]) {
return;
}
if ([elementName isEqualToString:@"Table"]) {
[verses addObject:model];
model = nil;
}
else {
[model setValue:currentElementValue forKey:elementName]; //The exception break point hits here
}
currentElementValue = nil;
}
currentElementValue正确显示。modelis 和 object 的一个类名为Model, currentElementValueis a NSMutableStringobject versesis an NSMutableArray。我是 Objective C 的初学者，之前没有做过解析。问题在于方法：
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
没有按预期工作。在遇到我在代码中注释的异常断点后，该应用程序被破坏了。如何获取 and 的值Verse并将BibleWords其存储到 some NSArray/NSMutableArray/NSDictionary/NSMutableDictionary. 请询问我是否需要提及其他任何内容，以了解问题的实际所在。
编辑：
试过这个：
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict {
captureCharacters = NO;
[currentElementValue setString : @""];
if ([elementName isEqualToString:@"Table"]) { //set a break point here as well. The elementName is string and hence is not entering any of the conditions in this delegate method. Hence captureCharacters is always set to NO and nothing is working.
model = [[Model alloc]init];
}
else if ([elementName isEqualToString:@"Verse"]) {
capturingCharacters = yes;
}
else if ([elementName isEqualToString:@"BibleWords"]) {
capturingCharacters = yes;
}
}
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string {
if(capturingCharacters) {
[currentElementValue appendString:string];
}
}
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName {
if ([elementName isEqualToString:@"Table"]) {
[array addObject : model];
model = nil;
}
else if ([elementName isEqualToString:@"Verse"]) { //set a break point here
model.Verse = currentElementValue; //not entering this condition
}
else if ([elementName isEqualToString:@"BibleWords"]) {
model.BibleWords = currentElementValue; //not entering this condition
}
}
它不工作，我得到空值model.Verse和model.BibleWords。这些方法是如何工作的？
EDIT-2
模型界面：
//model.h
@protocol HttpRequestHandler <NSObject>
- (void)returnFromSiteParsedData:(NSMutableArray *)parsedData;
@end
@interface Model : NSObject <NSURLConnectionDelegate, NSXMLParserDelegate>
{
NSString *urlToLoad;
NSMutableURLRequest *requestSiteToSendData;
NSURLConnection *connectionToSiteToSendData;
NSString *verseText;
int verseNumber;
}
@property(nonatomic, retain) NSString *verseText;
@property(nonatomic, assign) int verseNumber;
- (void)loadSiteToSendDataWithChapterNumber:(int)chapterNumber AndBookNumber:(int)bookNumber;
@property(nonatomic, retain)id<HttpRequestHandler>httpRequestHandlerDelegate;
@end
模型实现
//model.m
@implementation Model
@synthesize verseNumber;
@synthesize verseText;
- (void)loadSiteToSendDataWithChapterNumber:(int)chapterNumber AndBookNumber:(int)bookNumber {
urlToLoad = [[NSString alloc]initWithFormat:@"http://www.webservicex.net/BibleWebservice.asmx/GetBibleWordsByBookTitleAndChapter?BookTitle=Genesis&chapter=1"];
requestSiteToSendData = [NSMutableURLRequest requestWithURL:[[NSURL alloc]initWithString:urlToLoad] cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:30];
connectionToSiteToSendData = [[NSURLConnection alloc]initWithRequest:requestSiteToSendData delegate:self];
}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
// Parse the XML into a dictionary
NSXMLParser *parser = [[NSXMLParser alloc]initWithData:data];
VBSParser *vbsParser = [[VBSParser alloc]initVBSParser];
[parser setDelegate:vbsParser];
BOOL success = [parser parse];
if (success) {
NSMutableArray *verses = [vbsParser verses];
NSLog(@"%@", verses);
NSLog(@"Number: %d\n Text: %@", verseNumber,verseText);
[self.httpRequestHandlerDelegate returnFromSiteParsedData:verses];
}
// Print the dictionary
}
@end
委托用于将解析后的数据返回给视图控制器。