Java-在Android Studio中使用DocumentBuilder / XML解析器

Question

I'm trying to use dom XML parser but it crashes at with IOException

Document doc = builder.parse(file); 

The code:

try {

   DocumentBuilderFactory factory =  DocumentBuilderFactory.newInstance();
   DocumentBuilder builder = factory.newDocumentBuilder();
   File file = new File(getResources().getResourceName(R.raw.fooddata));
   Document doc = builder.parse(file);

}catch (ParserConfigurationException e) {
   e.printStackTrace();
} catch (IOException e) {
   e.printStackTrace();
} catch (SAXException e) {
   e.printStackTrace();
}

I think theres something wrong the the file path. The fooddata.xml file is in /res/xml/fooddata.xml & /res/raw/fooddata.xml, I've tried access it in different way but nothing works.

I get IOException from try/catch

How do I get the builder.parse(file) to work?

Answer 1

The fooddata.xml file is in /res/xml/fooddata.xml & /res/raw/fooddata.xml

Those are files on your development machine . They are not files on the Android device. Resources are merely entries in the APK file on the device.

Replace:

File file = new File(getResources().getResourceName(R.raw.fooddata));
Document doc = builder.parse(file);

with:

Document doc=builder.parse(getResources().openRawResource(R.raw.fooddata));