2

Good Afternoon all ,

I have downloaded data from a web service and im looking to parse that data so that i can use it , but I'm having problems parsing the returned values , below is the aquisition code and anything else in between ANY help would be appreciated 

 -(IBAction)runNewImport:(id)sender{


recordResults = FALSE;

soapMessage = [NSString stringWithFormat:

               @"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"

               "<s:Envelope \n"

               "xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" \n"
               "xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" \n" 
               "xmlns:SOAP-ENC=\"http://schemas.xmlsoap.org/soap/encoding/\" \n"
               "s:encodingStyle=\"http://schemas.xmlsoap.org/soap/encoding/\" \n"
               "xmlns:s=\"http://schemas.xmlsoap.org/soap/envelope/\"> \n"       


               "<s:Body> \n"

               "<[FUNCTION] xmlns=\"http://tempuri.org/\"/>\n"

               "</s:Body> \n"
               "</s:Envelope>"];


[[NSURLCache sharedURLCache] removeAllCachedResponses];
NSURL *url = [NSURL URLWithString:@"http://[PATH]"];      
NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url];             
NSString *msgLength = [NSString stringWithFormat:@"%d", [soapMessage length]];          
[theRequest addValue: @"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];       
[theRequest addValue: @"[FUNCTION]" forHTTPHeaderField:@"SOAPAction"];
[theRequest addValue: msgLength forHTTPHeaderField:@"Content-Length"];
[theRequest setHTTPMethod:@"POST"];     
[theRequest setHTTPBody: [soapMessage dataUsingEncoding:NSUTF8StringEncoding]];
NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];

if(theConnection) {
    webData = [NSMutableData data];
    NSLog(@"%@",webData);
}
else {
    NSLog(@"theConnection is NULL");
}       



}

-(void)connectionDidFinishLoading:(NSURLConnection *)connection
{
NSLog(@"DONE. Received Bytes: %d", [webData length]);
NSString *theXML = [[NSString alloc] initWithBytes: [webData mutableBytes] length:[webData length] encoding:NSUTF8StringEncoding];
NSLog(@"THIS IS THE DATA : %@",theXML);


xmlParser = [[NSXMLParser alloc] initWithData: webData];
[xmlParser setDelegate:self];
[xmlParser setShouldResolveExternalEntities: YES];
[xmlParser parse];


}

-(void)parser:(NSXMLParser *)parser didStartElement:(NSString *)
 elementName namespaceURI:(NSString *) 
 namespaceURI qualifiedName:(NSString *)qName
  attributes: (NSDictionary *)attributeDict
{
if( [elementName isEqualToString:@"CODE"])
{
    soapResults = [[NSMutableString alloc] init];
    NSLog(@"%@",soapResults);
    recordResults = TRUE;
}
}

-(void)parser:(NSXMLParser *)parser didEndElement:(NSString *)
 elementName namespaceURI:(NSString *)namespaceURI 
  qualifiedName:(NSString *)qName

{
if( [elementName isEqualToString:@"CODE"])
{
    recordResults = FALSE;
    soapResults = nil;
    }
}

Thanks for looking and again , all help is welcome

4

1 に答える 1

5

NSXMLParserの動作を誤解しているようです。AppleXML解析からこのドキュメントをよく見てください。

-(void)parser:didStartElement:namespaceURI:qualifiedName:attributes:

このメソッドは、パーサーがのような開始XMLタグを見つけたときに呼び出されるため、まだデータがありません。ここでは、保存したいものにのみメモリを割り当てる必要があります

- (void)parser:foundCharacters:

これで見つかったタグ内にデータがある場合に呼び出されparser:didStartElement:namespaceURI:qualifiedName:attributes:ます。このデータを最初に保存して、後で次のメソッドで必要なオブジェクトに保存できるようにします。

-(void)parser:didEndElement:namespaceURI:qualifiedName

パーサーが終了タグ（）に遭遇したときに呼び出されます。これで、変数に保持したデータができたparser:foundCharacters:ので、それをオブジェクトに保存します。

編集：了解しました。次のメソッドにコードサンプルを追加して、分解してみましょう。

このようなXMLがあるとしましょう。

<person>
    <lastName>Doe</lastName>
    <firstName>John</firstName>
    <address>
        <street>100 Main Street</street>
        <city>Somewhere</city>
    </address>
</person>

当然、通りと都市を含むプロパティlastName、firstName、addressDictionaryPersonを持つクラスが必要になります。そして、すべてを保持するには、personArrayが必要です。Person

これで構造ができました。これが解析部分です。理解を深めるために、各Ifブロックを個別に記述していることに注意してください。

.hファイル

@property (nonatomic, retain) Person *currentPerson;
@property (nonatomic, retain) NSMutableString *currentElement;
@property (nonatomic, retain) NSMutableDictionary *addressDic; //to be saved to person.addressDictionary when finished
@property (nonatomic, retain) NSMutableArray *personArray;

.mファイル

- (void)parserDidStartDocument:(NSXMLParser *)parser 
{
    personArray = [[NSMutableArray alloc] init];
}

- (void) parser: (NSXMLParser *) parser didStartElement: (NSString *) elementName
 namespaceURI: (NSString *) namespaceURI qualifiedName: (NSString *) qName attributes: (NSDictionary *) attributeDict
{
    if ([elementName isEqualToString:@"Person"])
    {
    currentPerson = [[Person alloc] init]; //
    return;
    }
    if ([elementName isEqualToString:@"lastName"])
    {
        currentElement = [[NSMutableString alloc] init];
        return;
    }
    if ([elementName isEqualToString:@"firstName"])
    {
        currentElement = [[NSMutableString alloc] init];
        return;
    }
    if ([elementName isEqualToString:@"address"])
    {
        adressDic = [[NSMutableDictionary alloc] init];
        return;
    }
    if ([elementName isEqualToString:@"street"])
    {
        currentElement = [[NSMutableString alloc] init];
        return;
    }
    if ([elementName isEqualToString:@"city"])
    {
        currentElement = [[NSMutableString alloc] init];
        return;
    }
}

- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
{
    [currentElement appendString:string];
}

- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
    if ([elementName isEqualToString:@"Person"])
    {
    [personArray addObject:currentPerson];
    [currentPerson release];
    return;
    }
    if ([elementName isEqualToString:@"lastName"])
    {
        currentPerson.lastName = currentElement;
        [currentElement release]; currentElement = nil;
        return;
    }
    if ([elementName isEqualToString:@"firstName"])
    {
        currentPerson.firstName = currentElement;
        [currentElement release]; currentElement = nil;
        return;
    }
    if ([elementName isEqualToString:@"address"])
    {
        currentPerson.addressDictionary = addresDic;
        [addressDic release];
        return;
    }
    if ([elementName isEqualToString:@"street"])
    {
        [addressDic setObject:currentElement forKey:@"street"];
        [currentElement release]; currentElement = nil;
        return;
    }
    if ([elementName isEqualToString:@"city"])
    {
        [addressDic setObject:currentElement forKey:@"city"];
        [currentElement release]; currentElement = nil;
        return;
    }
}

これがすべて完了すると、parserDidEndDocument:呼び出されます。配列にすべてPersonのが含まれているので、それらを使って好きなことをします

- (void)parserDidEndDocument:(NSXMLParser *)parser
{
     for (Person *person in personArray)
     {
          NSLog(@"Person name:%@", person.firstName);
          NSLog(@"Person lastname:%@", person.lastName);
     }
}
于 2012-06-21T14:12:02.217 に答える