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 * * 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. * ==================================================================== * * This software consists of voluntary contributions made by many * individuals on behalf of the Apache Software Foundation. For more * information on the Apache Software Foundation, please see * <http://www.apache.org/>. * */ import java.io.IOException; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.ResponseHandler; import org.apache.http.client.methods.HttpPost; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClients; import org.apache.http.util.EntityUtils; import java.util.ArrayList; import java.util.List; import org.apache.http.NameValuePair; import org.apache.http.message.BasicNameValuePair; import org.apache.http.client.entity.UrlEncodedFormEntity; import org.apache.http.Consts; /** * This example demonstrates the use of the {@link ResponseHandler} to simplify * the process of processing the HTTP response and releasing associated resources. */ public class ClientWithResponseHandlerPost { public final static void main(String[] args) throws Exception { CloseableHttpClient httpclient = HttpClients.createDefault(); try { List<NameValuePair> formparams = new ArrayList<NameValuePair>(); formparams.add(new BasicNameValuePair("id", "KYacxNZ6QQc")); formparams.add(new BasicNameValuePair("calid", "adamm")); formparams.add(new BasicNameValuePair("content-out", "text/xml")); UrlEncodedFormEntity entity = new UrlEncodedFormEntity(formparams, Consts.UTF_8); //entity.setChunked(true); HttpPost httppost = new HttpPost("http://localhost:8080/export.wcap"); httppost.setEntity(entity); System.out.println("executing request " + httppost.getURI()); System.out.println("executing request " + httppost.getConfig()); // Create a custom response handler ResponseHandler<String> responseHandler = new ResponseHandler<String>() { public String handleResponse(final HttpResponse response) throws ClientProtocolException, IOException { int status = response.getStatusLine().getStatusCode(); if (status >= 200 && status < 600) { HttpEntity entity = response.getEntity(); return entity != null ? EntityUtils.toString(entity) : null; } else { throw new ClientProtocolException("Unexpected response status: " + status); } } }; String responseBody = httpclient.execute(httppost, responseHandler); System.out.println("----------------------------------------"); System.out.println(responseBody); System.out.println("----------------------------------------"); } finally { httpclient.close(); } } }