NSXMLParser 无法解析特殊字符(重音) [英] NSXMLParser can't parse special characters (accents)

问题描述

我正在使用 NSXMLParser 从 url 解析 xml(我的代码几乎与 这里)

I'm using NSXMLParser to parse an xml from a url (my code is almost exactly the same as here)

某些元素包含特殊字符，例如á"，这会导致单词 lik ándre 分裂为两个(á 和 ndre).

Some of the elements contain special characters like "á" which causes a word lik ándre to split into two (á and ndre).

这是我的 loadXMLByURL

Here is my loadXMLByURL

-(id) loadXMLByURL:(NSString *)urlString{
tickets     = [[NSMutableArray alloc] init];
NSURL *url      = [NSURL URLWithString:urlString];
NSData  *data   = [[NSData alloc] initWithContentsOfURL:url];
parser          = [[NSXMLParser alloc] initWithData:data];
parser.delegate = self;
[parser parse];
return self;}

我很确定这是因为未设置编码(我认为它需要是 NSUTF8StringEncoding)但我不确定在哪里/如何应用它.

I'm pretty sure it's because the encoding is not set (I think it needs to be NSUTF8StringEncoding) but I'm not sure where/how to apply it.

[更新]我的其余代码...

[UPDATE] Rest of my code...

- (void) parser:(NSXMLParser *)parser didStartElement:(NSString *)elementname namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict
{    
    if ([elementname isEqualToString:@"ticket"]) 
    {
        currentTicket = [Ticket alloc];
    }

}

- (void) parser:(NSXMLParser *)parser didEndElement:(NSString *)elementname namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
    if ([elementname isEqualToString:@"name"]) 
    {
        currentTicket.name = currentNodeContent;
    }
    else if ([elementname isEqualToString:@"title"]) 
    {
        currentTicket.title = currentNodeContent;
    }
    else if ([elementname isEqualToString:@"status"]) 
    {
        currentTicket.status = currentNodeContent;
    }
    else if ([elementname isEqualToString:@"ticket"])
    {
        [tickets addObject:currentTicket];
        [currentTicket release];
        currentTicket = nil;
        [currentNodeContent release];
        currentNodeContent = nil;
    }

}

- (void) parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
{
    currentNodeContent = (NSMutableString *) [string stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
}

[更新 2]示例 xml...

[UPDATE 2] Sample xml...

<RB>
    <list>
        <ticket>
            <name>Andrew Ford</name>
            <title>3rd release</title>
            <status>1</status>
        </ticket>

        <ticket>
            <name>David Jenkins</name>
            <title>3rd release</title>
            <status>0</status>
        </ticket>

        <ticket>
            <name>Luis gomez ándre</name>
            <title>3rd release</title>
            <status>1</status>
        </ticket>
    </list>
</RB>

推荐答案

我会将 url 加载到 NSString 然后像这样转换.

I would load the url to an NSString and then convert like this.

-(id) loadXMLByURL:(NSString *)urlString{

    tickets     = [[NSMutableArray alloc] init];
    NSURL *url      = [NSURL URLWithString:urlString];
    NSError *error;
    NSString * dataString = [[NSString alloc] initWithContentsOfURL:url encoding:NSUTF8StringEncoding error:&error];
    NSData *data = [dataString dataUsingEncoding:NSUTF8StringEncoding];
    parser          = [[NSXMLParser alloc] initWithData:data];
    parser.delegate = self;
    [parser parse];
    return self;

}

部分问题可能是您的 parser:foundCharacters: 方法正在分配给您的 currentNodeContent 而不是附加.请参阅以下链接中的 Apple 文档.

Part of the problem may be that your parser:foundCharacters: method is assigning to your currentNodeContent instead of appending. See the Apple Doc at the following link.

http://developer.apple.com/library/ios/#documentation/cocoa/reference/NSXMLParserDelegate_Protocol/Reference/Reference.html

来自文档:

因为字符串可能只是当前元素的全部字符内容的一部分，所以应该将其附加到当前的字符累积中，直到元素发生变化.

Because string may be only part of the total character content for the current element, you should append it to the current accumulation of characters until the element changes.

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