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1: /* =========================================================== 2: * JFreeChart : a free chart library for the Java(tm) platform 3: * =========================================================== 4: * 5: * (C) Copyright 2000-2007, by Object Refinery Limited and Contributors. 6: * 7: * Project Info: http://www.jfree.org/jfreechart/index.html 8: * 9: * This library is free software; you can redistribute it and/or modify it 10: * under the terms of the GNU Lesser General Public License as published by 11: * the Free Software Foundation; either version 2.1 of the License, or 12: * (at your option) any later version. 13: * 14: * This library is distributed in the hope that it will be useful, but 15: * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 16: * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 17: * License for more details. 18: * 19: * You should have received a copy of the GNU Lesser General Public 20: * License along with this library; if not, write to the Free Software 21: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 22: * USA. 23: * 24: * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 25: * in the United States and other countries.] 26: * 27: * ----------------- 28: * URLUtilities.java 29: * ----------------- 30: * (C) Copyright 2007, by Object Refinery Limited. 31: * 32: * Original Author: David Gilbert (for Object Refinery Limited); 33: * Contributors: -; 34: * 35: * Changes: 36: * -------- 37: * 17-Apr-2007 : Version 1 (DG); 38: * 39: */ 40: 41: package org.jfree.chart.urls; 42: 43: import java.lang.reflect.InvocationTargetException; 44: import java.lang.reflect.Method; 45: import java.net.URLEncoder; 46: 47: /** 48: * General utility methods for URLs. 49: * 50: * @since 1.0.6 51: */ 52: public class URLUtilities { 53: 54: /** Constant used by {@link #encode(String, String)}. */ 55: private static final Class[] STRING_ARGS_2 = new Class[] {String.class, 56: String.class}; 57: 58: /** 59: * Calls <code>java.net.URLEncoder.encode(String, String)</code> via 60: * reflection, if we are running on JRE 1.4 or later, otherwise reverts to 61: * the deprecated <code>URLEncoder.encode(String)</code> method. 62: * 63: * @param s the string to encode. 64: * @param encoding the encoding. 65: * 66: * @return The encoded string. 67: * 68: * @since 1.0.6 69: */ 70: public static String encode(String s, String encoding) { 71: Class c = URLEncoder.class; 72: String result = null; 73: try { 74: Method m = c.getDeclaredMethod("encode", STRING_ARGS_2); 75: try { 76: result = (String) m.invoke(null, new Object[] {s, encoding}); 77: } 78: catch (InvocationTargetException e) { 79: e.printStackTrace(); 80: } 81: catch (IllegalAccessException e) { 82: e.printStackTrace(); 83: } 84: } 85: catch (NoSuchMethodException e) { 86: // we're running on JRE 1.3.1 so this is the best we have... 87: result = URLEncoder.encode(s); 88: } 89: return result; 90: } 91: 92: }