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NE For WEIXIN is good :)
There is a newer version: 0.8.1
package com.tmsps.ne4Weixin.utils;

import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
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.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class HttpClient {
	private static final Logger log = LoggerFactory.getLogger(HttpClient.class);

	/**
	 * @author zhangwei [email protected]
	 * @param url
	 * @param params
	 * @return
	 */
	public static String httpGet(String url, Map params) {
		String body = null;
		CloseableHttpClient httpClient = HttpClients.createDefault();
		HttpGet get = new HttpGet(url);
		List pars = null;
		if (null == params) {
			pars = new ArrayList();
		} else {
			pars = new ArrayList(params.size());
			for (Map.Entry entry : params.entrySet()) {
				NameValuePair pair = new BasicNameValuePair(entry.getKey(), entry.getValue());
				pars.add(pair);
			}
		}
		try {
			String paraString = EntityUtils.toString(new UrlEncodedFormEntity(pars));
			get.setURI(new URI(get.getURI().toString().concat("?").concat(paraString)));
			log.debug("request method is GET and url is {}", get.getURI().toString().concat("?").concat(paraString));
			HttpResponse httpResponse = httpClient.execute(get);
			HttpEntity entity = httpResponse.getEntity();
			body = EntityUtils.toString(entity, "UTF-8");
		} catch (ParseException | IOException | URISyntaxException e) {
			e.printStackTrace();
		} finally {
			try {
				httpClient.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		log.debug("get response is {}", body);
		return body;
	}

	/**
	 * @author zhangwei [email protected]
	 * @param url
	 * @param params
	 * @return
	 */
	public static String httpPost(String url, Map params) {
		String body = null;
		CloseableHttpClient httpClient = HttpClients.createDefault();
		HttpPost post = new HttpPost(url);
		RequestConfig config = RequestConfig.custom().setConnectionRequestTimeout(10000).setConnectTimeout(10000).setSocketTimeout(10000).build();
		CloseableHttpResponse response = null;
		Iterator> it = params.entrySet().iterator();
		List pars = new ArrayList();
		while (it.hasNext()) {
			Entry entry = it.next();
			pars.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
		}
		try {
			post.setEntity(new UrlEncodedFormEntity(pars, "UTF-8"));
			post.setConfig(config);
			response = httpClient.execute(post);
			HttpEntity entity = response.getEntity();
			body = EntityUtils.toString(entity, "UTF-8");
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			try {
				httpClient.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		log.debug("get response is {}", body);
		return body;
	}

	/**
	 * @author zhangwei [email protected]
	 * @param url
	 * @param json
	 * @return
	 */
	public static String postJson(String url, String json) {
		String body = null;
		CloseableHttpClient httpClient = HttpClients.createDefault();
		HttpPost post = new HttpPost(url);
		RequestConfig config = RequestConfig.custom().setConnectionRequestTimeout(10000).setConnectTimeout(10000).setSocketTimeout(10000).build();
		CloseableHttpResponse response = null;
		post.setEntity(new StringEntity(json, ContentType.APPLICATION_JSON));
		post.setConfig(config);
		try {
			response = httpClient.execute(post);
			HttpEntity entity = response.getEntity();
			body = EntityUtils.toString(entity, "UTF-8");
		} catch (IOException e) {
			log.error(e.toString());
			e.printStackTrace();
		}
		log.debug("get response is {}", body);
		return body;
	}
	
	public static String postXML(String url, String data) {
		String body = null;
		CloseableHttpClient httpClient = HttpClients.createDefault();
		HttpPost post = new HttpPost(url);
		RequestConfig config = RequestConfig.custom().setConnectionRequestTimeout(10000).setConnectTimeout(10000).setSocketTimeout(10000).build();
		CloseableHttpResponse response = null;
		post.setEntity(new StringEntity(data, ContentType.APPLICATION_XML));
		post.setConfig(config);
		try {
			response = httpClient.execute(post);
			HttpEntity entity = response.getEntity();
			body = EntityUtils.toString(entity, "UTF-8");
		} catch (IOException e) {
			log.error(e.toString());
			e.printStackTrace();
		}
		log.debug("get response is {}", body);
		return body;
	}
}