Java tutorial
/******************************************************************************* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF 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 * <p> * http://www.apache.org/licenses/LICENSE-2.0 * <p> * 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.apache.sling.hapi.client.forms.internal; import java.io.UnsupportedEncodingException; import org.apache.http.HttpEntity; import org.apache.http.NameValuePair; import org.apache.http.client.entity.UrlEncodedFormEntity; import org.apache.http.client.utils.URLEncodedUtils; import org.apache.http.entity.mime.MultipartEntityBuilder; import org.apache.http.message.BasicNameValuePair; import org.jsoup.nodes.Element; /** * */ public class FormValues { private Element form; private Iterable<NameValuePair> values; private Vals list = new Vals(); public FormValues(Element form, Iterable<NameValuePair> values) { this.form = form; this.values = values; build(); resolve(); } /** * @return * {@see http://www.w3.org/TR/html5/forms.html#constructing-the-form-data-set} */ private FormValues build() { for (Element input : form.select("button, input, select, textarea")) { String type = input.attr("type"); if (input.hasAttr("disabled")) continue; if (input.tagName().equalsIgnoreCase("button") && !type.equals("submit")) continue; if (input.tagName().equalsIgnoreCase("input") && (type.equals("button") || type.equals("reset"))) continue; if (type.equals("checkbox") && input.hasAttr("checked")) continue; if (type.equals("radio") && input.hasAttr("checked")) continue; if (!type.equals("image") && input.attr("name").length() == 0) continue; if (input.parents().is("datalist")) continue; if (type.equals("image") || type.equals("file")) continue; // don't support files for now String name = input.attr("name"); if (input.tagName().equalsIgnoreCase("select")) { for (Element o : input.select("option[selected]")) { if (o.hasAttr("disabled")) continue; list.add(name, new BasicNameValuePair(name, o.val())); } } else if (type.equals("checkbox") || type.equals("radio")) { String value = input.hasAttr("value") ? input.val() : "on"; list.add(name, new BasicNameValuePair(name, value)); } else { list.add(name, new BasicNameValuePair(name, input.val())); } } return this; } private FormValues resolve() { for (NameValuePair o : values) { if (list.has(o.getName())) { list.set(o); } else { // for now just set the value even if the form doesn't have a submittable input for the name. // this is to support custom field that generate input dynamically list.set(o); } } return this; } public String toString() { return URLEncodedUtils.format(list.flatten(), "UTF-8"); } public HttpEntity toUrlEncodedEntity() { try { return new UrlEncodedFormEntity(list.flatten(), "UTF-8"); } catch (UnsupportedEncodingException e) { throw new RuntimeException(e); } } public HttpEntity toMultipartEntity() { MultipartEntityBuilder eb = MultipartEntityBuilder.create(); for (NameValuePair p : list.flatten()) { eb.addTextBody(p.getName(), p.getValue()); } return eb.build(); } }