如何在Java中使用非标准变量名来生成XML标签？

Question

I am trying to write the AndroidManifest.xml file programmatically through Java using Jaxb. The problem comes while defining the attributes, which follow a string:string naming convention. For example, the manifest element is defined thus:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
          package="string"
          android:sharedUserId="string"
          android:sharedUserLabel="string resource" 
          android:versionCode="integer"
          android:versionName="string"
          android:installLocation=["auto" | "internalOnly" | "preferExternal"] >
    . . .
</manifest>

While doing this from Java, I cannot annotate the attributes because xmlns:android etc are not valid Java variables.

What is the best way to overcome this, while still using Jaxb, and not resorting to StringBuilder technique for generating the XML?

Answer 1

Here is an example from the javadoc of javax.xml.bind.annotation.XmlElement:

  @XmlElement(name="item-price")
  public java.math.BigDecimal price;

The name parameter is what you'll see in the XML.

But this android: the namespace prefix and should appear according to the namespace definition, which is the parameter of namespace:

  @XmlElement(name="item-price", namespace="http://schemas.android.com/apk/res/android")
  public java.math.BigDecimal price;

After marshalling, you'll most likely see "ns1:" in place of android:, but that's OK.

Easiest way to get the annotated Java code: Write (or find) the XML schema and run it through xjc . Works all the time - almost ;-)