Question

可能重复：
  NSXMLParser on iOS, how do I use it given a xml file
  Cocoa/Objective-C : Best Practice to parse XML Document?

我想在Cocoa Application中解析XML文件。但是xml的解析器没有工作。请帮助解析此文件或其他类似的xml文件。我的Xml文件如下：

  <book name="Genesis">
    <chapter number="1">
      <verse number="1">At the first God made the heaven and the earth.</verse>
      <verse number="2">And the earth was waste and without form; and it was dark on the face of the deep: and the Spirit of God was moving on the face of the waters.</verse>
      <verse number="3">And God said, Let there be light: and there was light.</verse>
    </chapter>  
  </book>   
 <book name="Genesis">
    <chapter number="1">
      <verse number="1">At the first God made the heaven and the earth.</verse>
      <verse number="2">And the earth was waste and without form; and it was dark on the face of the deep: and the Spirit of God was moving on the face of the waters.</verse>
      <verse number="3">And God said, Let there be light: and there was light.</verse>
    </chapter>  
  </book>

Answer 1

实际上有两种解析XML的方法 - 事件驱动的方法（例如NSXMLParser使用的方法）和树方法（例如NSXML使用的方法）。

如果你只是在特定元素之后，那么使用NSXML使用的树方法可能要容易得多，因为它可以让你使用XPath（实际上是XQuery）查询XML文档来返回特定的节点，你感兴趣的等等。

如果这听起来像使用NSXMLParser迭代整个结构可能是一种更富有成效的方法，那么我建议阅读the Introduction to Tree-Based XML Programming Guide for Cocoa。（“查询XML文档”部分应该特别重要。）

Answer 2

   - (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict{     
  if ([elementName isEqualToString:@"book"]) 
   {
     item = [[NSMutableDictionary alloc] init]; 

        item_name = [[NSMutableString alloc] initWithString:[attributeDict valueForKey:@"name"]];
}

//然后在item_name中，您将值作为Genesis
//尝试像这样解析
编辑：看到评论后

 if ([elementName isEqualToString:@"verse"]) 
       {

            item_name1 = [[NSMutableString alloc] initWithString:[attributeDict valueForKey:@"number"]];
    }

//在item_name1中，您将获得值为1

如何在iOS上解析XML文件？

2 个答案: