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Jetty example source code file (JSONPTransport.java)
The Jetty JSONPTransport.java source code// ======================================================================== // Copyright 2007 Mort Bay Consulting Pty. Ltd. // ------------------------------------------------------------------------ // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // http://www.apache.org/licenses/LICENSE-2.0 // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. //======================================================================== package org.mortbay.cometd; import java.io.IOException; import java.io.PrintWriter; import javax.servlet.http.HttpServletResponse; import org.mortbay.util.ajax.JSON; import dojox.cometd.Message; /* ------------------------------------------------------------ */ /** * @author aabeling * @author gregw * */ public class JSONPTransport extends AbstractTransport { public final static String __DEFAULT_CALLBACK="jsonpcallback"; int _responses=0; PrintWriter _out; String _jsonp= null; boolean _commented; String _mimeType; public JSONPTransport(boolean commented,String jsonp) { setJSONCommented(commented); _commented=commented; _jsonp=jsonp; } public void send(Message message) throws IOException { if (message!=null) { if (_responses==0) { HttpServletResponse response=getResponse(); response.setContentType(_mimeType); _out=response.getWriter(); if (_commented) _out.write("/*"); _out.write(this._jsonp==null?__DEFAULT_CALLBACK:_jsonp); _out.write("(["); } else { _out.write(",\r\n"); } String r=(message instanceof MessageImpl) ?((MessageImpl)message).getJSON() :JSON.toString(message); ((MessageImpl)message).decRef(); _responses++; _out.write(r); } } public void complete() throws IOException { HttpServletResponse response=getResponse(); response.setStatus(200); if (_responses==0) { response.setContentType(_mimeType); _out=response.getWriter(); if (_commented) _out.write("/*"); _out.write(this._jsonp==null?__DEFAULT_CALLBACK:_jsonp); _out.write("(["); } if (_commented) _out.write("])*/\r\n"); else _out.write("])\r\n"); _out.flush(); } /* ------------------------------------------------------------ */ public boolean alwaysResumePoll() { return true; } /* ------------------------------------------------------------ */ public String getJsonp() { return _jsonp; } /* ------------------------------------------------------------ */ public String toString() { return "JSONPTransport[jsonp="+this._jsonp+"]"; } /* ------------------------------------------------------------ */ /** * @return the commented */ public boolean isJSONCommented() { return _commented; } /* ------------------------------------------------------------ */ /** * @param commented the commented to set */ public void setJSONCommented(boolean commented) { _commented=commented; _mimeType=commented?"text/javascript-comment-filtered; charset=utf-8":"text/javascript; charset=utf-8"; } } Other Jetty examples (source code examples)Here is a short list of links related to this Jetty JSONPTransport.java source code file: |
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