如何通过kissxml解析器解析xml的子节点值？

Question

我有这个xml文件:

<Menu>
<item value="boiled">
    <image value="boiling1recipe">boiling1.jpg</image>
    <recipeImage>png1.png</recipeImage>
    <recipeImage>png2.png</recipeImage>
    <recipeImage>png3.png</recipeImage>
    <recipeImage>png4.png</recipeImage>
  </item>
  <item value="boiled">
    <image value="boiling2recipe">boiling2.jpeg</image>
    <recipeImage>png5.png</recipeImage>
    <recipeImage>png6.png</recipeImage>
    <recipeImage>png7.png</recipeImage>
    <recipeImage>png8.png</recipeImage>
  </item>
  <item value="rosted">
    <image value="roasted1recipe">roasted1.jpeg</image>
    <recipeImage>png8.png</recipeImage>
    <recipeImage>png9.png</recipeImage>
    <recipeImage>png10.png</recipeImage>
    <recipeImage>png11.png</recipeImage>
   </item>
  <item value="rosted">
    <image value="roasted2recipe">roasted2.jpeg</image>
    <recipeImage>png12.png</recipeImage>
    <recipeImage>png13.png</recipeImage>
    <recipeImage>png1.png</recipeImage>
    <recipeImage>png2.png</recipeImage>
   </item>
</Menu>

现在,我正在解析它:

    DDXMLNode *node = [item attributeForName:@"value"];

    if ([[node stringValue] isEqual:@"boiled"]) {
        [listOfBoiledItems addObject:model];

        DDXMLNode *node1 = [item attributeForName:@"value"];

        if ([[node1 stringValue] isEqual:@"boiling1recipe"]) {
            [listOfRecipies1 addObject:model];
        }
        else if ([[node1 stringValue] isEqual:@"boiling2recipe"]) { 
            [listOfRecipies2 addObject:model];
        }
     }
            else if ([[node stringValue] isEqual:@"rosted"]) {  
        [listOfRostedItems addObject:model];

        DDXMLNode *node1 = [item attributeForName:@"value"];

        if ([[node1 stringValue] isEqual:@"roasted1recipe"]) {  
            [listOfRecipies6 addObject:model];
        }
        else if ([[node1 stringValue] isEqual:@"roasted2recipe"]) {
            [listOfRecipies7 addObject:model];
        }
    }

这里,编译器读取父节点值即"煮沸"和"已发布"但不读取智利节点值即"沸腾1","沸腾1","烤1条"和"烤2条".可能是什么问题,意味着我做错了什么？请指导我作为我第一次进行解析.

Answer 1

为什么不使用XPath查询呢？这会更容易,您可以解析循环中的每个项目.我没有在您的XML上尝试此代码,但它应该工作:

NSError *error;
NSArray *xmlItems = [ddDoc nodesForXPath:@"//item" error:&error]; // where ddDoc is your DDXMLDocument

for(DDXMLElement* itemElement in xmlItems)
{
    // Here you get the item->value attribute value as string...
    NSString *itemValueAsString = [[itemElement attributeForName:@"value"]stringValue];

    // Now you get the image element from inside the item element
    DDXMLElement *imageElement = [[itemElement nodesForXPath:@"image" error:&error] objectAtIndex:0];

    // And finally the image->value attribute value as string…
    NSString *imageValueAsString = [[imageElement attributeForName:@"value"]stringValue];
}

希望它能解决你的问题.