HttpClientAPI可用于执行表单

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 * to you under the Apache License, Version 2.0 (the

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 *   http://www.apache.org/licenses/LICENSE-2.0

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 *///from 时 代 J a v a 公 众 号 - N o w J a v  a . c o m

package org.apache.http.examples.client;


import java.net.URI;

import java.util.List;


import org.apache.http.HttpEntity;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.client.methods.HttpUriRequest;

import org.apache.http.client.methods.RequestBuilder;

import org.apache.http.cookie.Cookie;

import org.apache.http.impl.client.BasicCookieStore;

import org.apache.http.impl.client.CloseableHttpClient;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.util.EntityUtils;


/**

 * A example that demonstrates how HttpClient APIs can be used to perform

 * form-based logon.

 */

public class ClientFormLogin {
// 来 自 NowJava.com - 时  代  Java

    public static void main(String[] args) throws Exception {

        BasicCookieStore cookieStore = new BasicCookieStore();

        CloseableHttpClient httpclient = HttpClients.custom()

                .setDefaultCookieStore(cookieStore).build();

        try {

            HttpGet httpget = new HttpGet("https://someportal/");

            CloseableHttpResponse response1 = httpclient.execute(httpget);

            try {

                HttpEntity entity = response1.getEntity();


                System.out.println("Login form get: "

                        + response1.getStatusLine());

                EntityUtils.consume(entity);


                System.out.println("Initial set of cookies:");

                List<Cookie> cookies = cookieStore.getCookies();

                if (cookies.isEmpty()) {

                    System.out.println("None");

                } else {

                    for (int i = 0; i < cookies.size(); i++) {

                        System.out

                                .println("- " + cookies.get(i).toString());

                    }

                }

            } finally {

                response1.close();

            }


            HttpUriRequest login = RequestBuilder.post()

                    .setUri(new URI("https://someportal/"))

                    .addParameter("IDToken1", "username")

                    .addParameter("IDToken2", "password").build();

            CloseableHttpResponse response2 = httpclient.execute(login);

            try {

                HttpEntity entity = response2.getEntity();


                System.out.println("Login form get: "

                        + response2.getStatusLine());

                EntityUtils.consume(entity