Package org.apache.turbine.modules.screens

Klasse JSONScreen

java.lang.Object

org.apache.turbine.modules.screens.RawScreen

org.apache.turbine.modules.screens.JSONScreen

Alle implementierten Schnittstellen:

Assembler, Screen

Bekannte direkte Unterklassen:

JSONSecureScreen

public class JSONScreen
extends RawScreen

A Screen class for dealing with JSON-RPC requests. Typically you would extend this class and override the doOutput() method to use TurbineJsonRpc to register the POJOs that will provide the functions you are making available via JSON-RPC. Use JSONSecureScreen if you need the user to be logged in prior to executing the functions you provide.

Here is an example from a superclass: public void doOutput(PipelineData data) throws Exception { User user = data.getUser(); MyJsonFunctions myFunctions = new MyJsonFunctions(user.getName()); // Session specific TurbineJsonRpc.registerObject(data.getSession(), "myFunctions", myFunctions); // Global //TurbineJsonRpc.registerObjectGlobal("testGlobal", testObject); super.doOutput(data); }

The class MyFunctions would be something like: public class MyJsonFunctions { private String getHello(String clientParameter) { return "Hello " + clientParameter; } }

This code is derived from the com.metaparadigm.jsonrpc.JSONRPCServlet and (after upgrade) checked against org.jabsorb.JSONRPCServlet.

Version:

$Id$

Autor:

brad@folkens.com, Scott Eade

Feldübersicht

Felder

Modifizierer und Typ	Feld	Beschreibung
protected static final int	BUFFER_SIZE
protected static final String	JSONRPC_CONTENT_TYPE
protected JsonRpcService	jsonRpcService	Injected service instance

Von Schnittstelle geerbte Felder org.apache.turbine.modules.Screen

CACHE_SIZE_DEFAULT, CACHE_SIZE_KEY, NAME, PREFIX

Konstruktorübersicht

Konstruktoren

Konstruktor	Beschreibung
JSONScreen()

Methodenübersicht

Modifizierer und Typ	Methode	Beschreibung
protected void	doOutput(PipelineData pipelineData)	Output the dynamic content.
protected String	getContentType(PipelineData pipelineData)	Set the content type.

Von Klasse geerbte Methoden org.apache.turbine.modules.screens.RawScreen

doBuild, getLayout

Von Klasse geerbte Methoden java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Von Schnittstelle geerbte Methoden org.apache.turbine.modules.Screen

build, setLayout

Felddetails

JSONRPC_CONTENT_TYPE

protected static final String JSONRPC_CONTENT_TYPE

Siehe auch:

• Konstantenfeldwerte

BUFFER_SIZE

protected static final int BUFFER_SIZE

Siehe auch:

• Konstantenfeldwerte

jsonRpcService

protected JsonRpcService jsonRpcService

Injected service instance

Konstruktordetails

JSONScreen

public JSONScreen()

Methodendetails

getContentType

protected String getContentType(PipelineData pipelineData)

Beschreibung aus Klasse kopiert: RawScreen

Set the content type. This method should be overridden to actually set the real content-type header of the output.

Angegeben von:

getContentType in Klasse RawScreen

Parameter:

pipelineData - Turbine information.

Gibt zurück:

A String with the content type.

Siehe auch:

• RawScreen.getContentType(org.apache.turbine.pipeline.PipelineData)

doOutput

protected void doOutput(PipelineData pipelineData)
                 throws Exception

Output the dynamic content. Encoding is UTF-8. @JSONRPC_CONTENT_TYPE: "application/json;charset=utf-8".

Angegeben von:

doOutput in Klasse RawScreen

Parameter:

pipelineData - The PipelineData object.

Löst aus:

Exception - a generic exception.