Outputing data in JSON format in response to a JSONP request : JSON « Development Class « Java






Outputing data in JSON format in response to a JSONP request

 

/*
 * This file is part of the AusStage Utilities Package
 *
 * The AusStage Utilities Package is free software: you can redistribute
 * it and/or modify it under the terms of the GNU General Public License 
 * as published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * The AusStage Utilities Package is distributed in the hope that it will 
 * be useful, but WITHOUT ANY WARRANTY; without even the implied warranty 
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with the AusStage Utilities Package.  
 * If not, see <http://www.gnu.org/licenses/>.
*/

//package au.edu.ausstage.utils;

/**
 * A class of methods useful when outputing data in JSON format in response to a JSONP request
 */
public class JSONPManager {

  /**
   * A convenience method to wrap a JSON string in a callback function name 
   * used to support JSONP requests.
   * More information: http://en.wikipedia.org/wiki/JSON#JSONP
   *
   * @param json     the json string
   * @param callback the name of the callback method
   */
  public static String wrapJSON(String json, String callback) {
    // could do other more interesting things here, but for the moment let's keep it simple  
    return callback + "(" + json + ");";  
  
  } // end the wrapJSON method
  
  /**
   * A convenience method to wrap a JSON string in a callback function name
   * used to support JSONP requests.
   * In this version the wrapped JSON is sent directly to the user via the PrintWriter
   * More information: http://en.wikipedia.org/wiki/JSON#JSONP
   *
   * @param json     the json string
   * @param callback the name of the callback method
   * @param writer   the PrintWriter to use to output the JSONP
   */
  public static void wrapJSON(String json, String callback, java.io.PrintWriter writer) {
    // could do other more interesting things here, but for the moment let's keep it simple  
    writer.print(callback + "(" + json + ");");  
  
  } // end the wrapJSON method
  
} // end class definition

   
  








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