Support for JsonDocument on Android

[menew]

mechanize for Java works correctly with HtmlDocument for HTML pages, but warnings below will be shown in logcat when instantiating MechanizeAgent.

Could not find method org.json.JSONTokener.<init>, referenced from method com.gistlabs.mechanize.document.json.JsonDocument.loadPage
VFY: unable to resolve direct method 5608: Lorg/json/JSONTokener;.<init> (Ljava/io/Reader;)V

Because of this class loading error, JsonDocument is not available on Android. Following exception will be thrown when loading JSON pages (like https://www.googleapis.com/urlshortener/v1/url).

FATAL EXCEPTION: main
java.lang.NoSuchMethodError: org.json.JSONTokener.<init>
at com.gistlabs.mechanize.document.json.JsonDocument.loadPage(JsonDocument.java:40)

This error may be caused by limitation of Android. Android does not support org.json library fully (or uses too old version), so lacks JSONTokener(java.io.Reader) constructor.

http://developer.android.com/reference/org/json/JSONTokener.html#pubctors

I'm currently using mechanize with patch to import another org.json library in another namespace (built and placed by hand), but I hope this problem be solved in master branch.

[jheintz]

Wow, Android is using the 2007 version of org.json. That's very annoying.

I almost wonder if we should/could package many of these dependencies right into the jar for mechanize (at least for an android version.) Possibly the maven shade plugin...

[jheintz]

I've used the maven shade plugin to try to resolve this issue (by embedding the latest org.json code into the mechanize jar as org.shaded.json).

Here's a download link for this variation of the mechanize library:
https://dl.dropboxusercontent.com/u/2169154/mechanize-android-0.11.1-SNAPSHOT.jar

I still need to figure out how to effectively publish this... I'd like this variation of the library to be in the maven repos as a mechanize jar in the context of android. At least I think that's what I want...

[jheintz]

Not context, but classifier.

Here is a link that might contain the details for how to publish different ways based on profiles:
http://www.sonatype.com/people/2010/01/how-to-create-two-jars-from-one-project-and-why-you-shouldnt/

[jheintz]

The latest code seemed to work, I've published the main artifact and also an "android" classifier that includes the shaded org.shaded.json package.

Here's the maven dependency:

<dependency>
  <groupId>com.gistlabs</groupId>
  <artifactId>mechanize</artifactId>
  <version>0.11.2-SNAPSHOT</version>
  <classifier>android</classifier>
</dependency>