Home > Web Front-end > JS Tutorial > Method to convert XML file into NSData object_javascript skills

Method to convert XML file into NSData object_javascript skills

WBOY
Release: 2016-05-16 15:45:32
Original
1516 people have browsed it


NSData *xmlData = [[NSData alloc]initWithContentsOfFile:[NSString stringWithFormat:@"%@/People.xml",[[NSBundle mainBundle] resourcePath]]]; 
  //2.将xmlData转化成xml文档 
  GDataXMLDocument *xmlDocument = [[GDataXMLDocument alloc]initWithData:xmlData options:0 error:nil]; 
  //3.得到节点 
  GDataXMLElement *rootElement = xmlDocument.rootElement; 
  //4.得到子节点 
/*NSArray *elementArray = rootElement.children; 
  //得到classone节点 
  GDataXMLElement *classoneElement = [elementArray firstObject]; 
  for(GDataXMLElement *element in classoneElement.children) 
  { 
    //得到当前节点的文本值 
    NSLog(@"%@",element.stringValue); 
    if (element.children.count>0) { 
      GDataXMLElement *infoElement = [element.children lastObject]; 
      //获得节点的所有属性和属性值 
      NSArray *attArray = infoElement.attributes; 
      for (GDataXMLElement *attElement in attArray) { 
        //得到属性名和属性值 
        NSLog(@"%@-%@",attElement.name,attElement.stringValue); 
      } 
    } 
  } 
  */ 
  //模糊查找 
  NSArray *eArray = [rootElement nodesForXPath:@"//info" error:nil]; 
  NSLog(@"%@",eArray); 
Copy after login

iPhone development parsing xml NSData

Please see the code analysis below for specific content:

 xml字符串为:
<users>
<user name="hoge" age="20" />
<user name="fuga" age="30" />
</users>
 
//解析按钮事件
-(IBAction)btnXml
{
  
  NSString* str= [uitextview1 text];
  //string转成data
  NSData *xmlData = [str dataUsingEncoding: NSUTF8StringEncoding];
  //对xml进行解析需要使用NSXMLParser类,首先声明一个NSXMLParser对象  
  //开始解析 
  NSXMLParser* xmlRead = [[NSXMLParser alloc] initWithData:xmlData];//初始化NSXMLParser对象  
  [xmlRead setDelegate:self];//设置NSXMLParser对象的解析方法代理 
  [xmlRead parse];//调用代理解析NSXMLParser对象,看解析是否成功   
}
 
//解析器,从两个结点之间读取内容
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string {
  //NSLog(@"%@",string);
}
 
//获得结点结尾的值
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName
 namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName {
  //NSLog(@"%@",elementName);
}
//获得结点头的值
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName
 namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
  attributes:(NSDictionary *)attributeDict 
{
  //NSLog(@"%@",elementName);
  if([elementName isEqualToString: @"user"])
  {
    NSString* strName=[attributeDict valueForKey:@"name"];
    NSString* strAge=[attributeDict valueForKey:@"age"]; 
    NSString* strUser=uitextview2.text;
    strUser=[strUser stringByAppendingFormat:@"姓名:%@,年龄:%@\n",strName,strAge];
    [uitextview2 setText:strUser];
    //NSLog(@"姓名:%@,年龄:%@", strName,strAge);
  }
}
Copy after login

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template