package com.taotao.manage.httpclient;

import java.io.IOException;

import java.net.URISyntaxException;

import java.util.ArrayList;

import java.util.List;

import java.util.Map;

import org.apache.http.NameValuePair;

import org.apache.http.ParseException;

import org.apache.http.client.config.RequestConfig;

import org.apache.http.client.entity.UrlEncodedFormEntity;

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

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

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

import org.apache.http.client.utils.URIBuilder;

import org.apache.http.entity.ContentType;

import org.apache.http.entity.StringEntity;

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

import org.apache.http.message.BasicNameValuePair;

import org.apache.http.util.EntityUtils;

import org.springframework.beans.BeansException;

import org.springframework.beans.factory.BeanFactory;

import org.springframework.beans.factory.BeanFactoryAware;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Service;

@Service

public class ApiHttpClientService implements BeanFactoryAware {

	private BeanFactory beanFactory;

	@Autowired(required=false)

	private RequestConfig config;

	/**

	 * GET请求，成功返回String；失败返回null

	 *

	 * @param url

	 * @return

	 * @throws ParseException

	 * @throws IOException

	 */

	public String doGet(String url) throws ParseException, IOException {

		// 2、创建http GET请求

		HttpGet httpGet = new HttpGet(url);

		httpGet.setConfig(config);

		CloseableHttpResponse response = null;

		try {

			// 3、执行请求

			response = getttpClient().execute(httpGet);

			// 4、判断返回状态是否为200

			if (response.getStatusLine().getStatusCode() == 200) {

				return EntityUtils.toString(response.getEntity(), "UTF-8");

			}

		} finally {

			if (response != null) {

				response.close();

			}

		}

		return null;

	}

	/**

	 * 带有参数的GET请求 ，返回：null，请求失败，String数据，请求成功

	 *

	 * @param url

	 * @param params

	 * @return

	 * @throws URISyntaxException

	 * @throws IOException

	 * @throws ParseException

	 */

	public String doGet(String url, Map<String, String> params) throws URISyntaxException, ParseException, IOException {

		URIBuilder uriBuilder = new URIBuilder(url);

		for (Map.Entry<String, String> map : params.entrySet()) {

			uriBuilder.setParameter(map.getKey(), map.getValue());

		}

		return this.doGet(uriBuilder.build().toURL().toString());

	}

	/**

	 * 创建http POST请求

	 *

	 * @param url

	 * @param params

	 * @return

	 * @throws IOException

	 * @throws ParseException

	 */

	public HttpResult doPost(String url, Map<String, String> params) throws ParseException, IOException {

		HttpPost httpPost = new HttpPost(url);

		httpPost.setConfig(config);

		// 伪装成浏览器访问

		// 设置2个post参数，一个是scope、一个是q

		if (params != null) {

			List<NameValuePair> parameters = new ArrayList<NameValuePair>(0);

			for (Map.Entry<String, String> map : params.entrySet()) {

				parameters.add(new BasicNameValuePair(map.getKey(), map.getValue()));

			}

			// 构造一个form表单式的实体

			UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(parameters);

			// 将请求实体设置到httpPost对象中

			httpPost.setEntity(formEntity);

		}

		CloseableHttpResponse response = null;

		try {

			// 执行请求

			response = getttpClient().execute(httpPost);

			// 判断返回状态是否为200

			return new HttpResult(response.getStatusLine().getStatusCode(),

					EntityUtils.toString(response.getEntity(), "UTF-8"));

		} finally {

			if (response != null) {

				response.close();

			}

		}

	}

	/**

	 * POST无餐请求

	 *

	 * @param url

	 * @return

	 * @throws ParseException

	 * @throws IOException

	 */

	public HttpResult doPost(String url) throws ParseException, IOException {

		return this.doPost(url, null);

	}

	/**

	 * 拿到最新的，是多例的

	 *

	 * @return

	 */

	public CloseableHttpClient getttpClient() {

		return this.beanFactory.getBean(CloseableHttpClient.class);

	}

	/**

	 * spring/applicationContext-HttpClient为多例 创建多例 ，可以放对象

	 *

	 * @param bean

	 * @throws BeansException

	 */

	@Override

	public void setBeanFactory(BeanFactory bean) throws BeansException {

		this.beanFactory = bean;

	}

	/**

	 * 创建http POST请求json

	 *

	 * @param url

	 * @param params

	 * @return

	 * @throws IOException

	 * @throws ParseException

	 */

	public HttpResult doPostJSON(String url, String params) throws ParseException, IOException {

		HttpPost httpPost = new HttpPost(url);

		httpPost.setConfig(config);

		// 伪装成浏览器访问

		// 设置2个post参数，一个是scope、一个是q

		if (params != null) {

			StringEntity entity=new StringEntity(params, ContentType.APPLICATION_JSON);

			// 将请求实体设置到httpPost对象中

			httpPost.setEntity(entity);

		}

		CloseableHttpResponse response = null;

		try {

			// 执行请求

			response = getttpClient().execute(httpPost);

			// 判断返回状态是否为200

			return new HttpResult(response.getStatusLine().getStatusCode(),

					EntityUtils.toString(response.getEntity(), "UTF-8"));

		} finally {

			if (response != null) {

				response.close();

			}

		}

	}

}