Here you can find the source of arrayToQueryString(String key, Object[] arr)
public static String arrayToQueryString(String key, Object[] arr)
//package com.java2s; /**/*from w ww . j av a2 s . c o m*/ * Licensed to ESUP-Portail under one or more contributor license * agreements. See the NOTICE file distributed with this work for * additional information regarding copyright ownership. * * ESUP-Portail licenses this file to you 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. */ public class Main { public static String arrayToQueryString(String key, Object[] arr) { StringBuilder sb = new StringBuilder(); for (Object o : arr) { sb.append("&" + key + "[]=" + o.toString()); } return sb.toString().replaceAll("%5B%5D=", "[]="); } }