V8JavaBridgeExample.java

import java.io.IOException;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.HashMap;
import java.util.Map;

import org.dojotoolkit.json.JSONParser;
import org.dojotoolkit.json.JSONSerializer;
import org.dojotoolkit.rt.v8.V8Exception;
import org.dojotoolkit.rt.v8.V8JavaBridge;
import org.dojotoolkit.server.util.resource.ResourceLoader;

public class V8JavaBridgeExample extends V8JavaBridge {
	private ResourceLoader resourceLoader = null;

	public V8JavaBridgeExample(ResourceLoader resourceLoader) {
		super(true);
		this.resourceLoader = resourceLoader; 
	}

	public String readResource(String path, boolean useCache) throws IOException {
		return resourceLoader.readResource(path, useCache);
	}
	
	public void runTestScript() {
		StringBuffer sb = new StringBuffer();
		sb.append("var v = test(JSON.stringify({input: \"Hello\"})); print(v);");
		try {
			runScript(sb.toString(), new String[]{"test"});
		} catch (V8Exception e) {
			e.printStackTrace();
		}
	}
	
	public String test(String json) {
		try {
			Map<String, Object> input = (Map<String, Object>)JSONParser.parse(new StringReader(json));
			System.out.println("json input value = "+input.get("input"));
			Map<String, Object> returnValue = new HashMap<String, Object>();
			returnValue.put("returnValue", "Hello Back");
			StringWriter sw = new StringWriter();
			JSONSerializer.serialize(sw, returnValue);
			return sw.toString();
		} catch (IOException e) {
			e.printStackTrace();
			return "{}";
		}
	}
}