如何使用DOM Java在xml中搜索子节点

Question

I have the following XML structure

<CodeSnippet>
<Code id="code1">
<Tags>button java</Tags>
<Snippet>sample code</Snippet>
</Code>
<Code id="code2">
<Tags>eclipse jbutton java</Tags>
<Snippet>sample code</Snippet>
</Code>
<.....>
</CodeSnippet>

Now, I want to retrieve all the Snippet from the above xml when i search using Tags. For instance, if search for "java" then all the nodes that contain tags as "java" must return the snippet.

My search query is:

//Code/Tags[contains(concat(' ',/text(),' '), ' "+ searchTags[0] +" ')]";

Here, searchTags[0] contains "java".

My result set should contain the Snippets of the selected nodes ie code1 and code2 from above xml structure.

Answer 1

试试这个表达式：

//Code/Tags[contains(., 'Java')]/../Snippet

Answer 2

For retrieving all the "Tags" containing "java", I used the below xpath expression,

//Code/Tags/text()[contains(., 'java')]

For retrieving all the "Snippet" related to the tags "java", I used below expression

//Code/Tags[contains(./text(), 'java')]/parent::Code/Snippet/text()

Thanks to @dfsq for helping me out with his expression. Thanks a lot.

Answer 3

You can write :

//Tags//Snippet

If you used XPath