此方法对URL进行编码，删除URL中的空格，并将其替换为“%20”。

/**

 * Copyright (c) 2005-2006 Aptana, Inc.

 *

 * All rights reserved. This program and the accompanying materials

 * are made available under the terms of the Eclipse Public License v1.0

 * which accompanies this distribution, and is available at

 * http://www.eclipse.org/legal/epl-v10.html. If redistributing this code,

 * this entire header must remain intact.

 */

//package com.nowjava;

/** from 
时 代 J a v a 公 众 号**/

public class Main {

    /**

     * This method encodes the URL, removes the spaces from the URL and replaces the same with <code>"%20"</code>.

     * This method is required to fix Bug 77840.

     * 

     * @param input

     * @return String

     * @since 3.0.2

     */

    public static String urlEncodeForSpaces(char[] input) {


        if (input == null) {

            return null;

        }


        StringBuffer retu = new StringBuffer(input.length);

        for (int i = 0; i < input.length; i++) {

            if (input[i] == ' ') {

                retu.append("%20");