HttpClient_httpclient 4.3.1 post get的工具类

package com.ryx.util;

import java.util.ArrayList;

import java.util.List;

import java.util.Map;

import org.apache.commons.lang.StringUtils;

import org.apache.http.HttpEntity;

import org.apache.http.NameValuePair;

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.impl.client.CloseableHttpClient;

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

import org.apache.http.message.BasicNameValuePair;

import org.apache.http.util.EntityUtils;

/**

 * 基于 httpclient 4.3.1版本的 http工具类

 * @author mcSui

 *

 */

public class HttpTookit {

    private static final CloseableHttpClient httpClient;

    public static final String CHARSET = "UTF-8";

    static {

        RequestConfig config = RequestConfig.custom().setConnectTimeout(60000).setSocketTimeout(15000).build();

        httpClient = HttpClientBuilder.create().setDefaultRequestConfig(config).build();

    }

    public static String doGet(String url, Map<String, String> params){

        return doGet(url, params,CHARSET);

    }

    public static String doPost(String url, Map<String, String> params){

        return doPost(url, params,CHARSET);

    }

    /**

     * HTTP Get 获取内容

     * @param url  请求的url地址 ?之前的地址

     * @param params 请求的参数

     * @param charset    编码格式

     * @return    页面内容

     */

    public static String doGet(String url,Map<String,String> params,String charset){

        if(StringUtils.isBlank(url)){

            return null;

        }

        try {

            if(params != null && !params.isEmpty()){

                List<NameValuePair> pairs = new ArrayList<NameValuePair>(params.size());

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

                    String value = entry.getValue();

                    if(value != null){

                        pairs.add(new BasicNameValuePair(entry.getKey(),value));

                    }

                }

                url += "?" + EntityUtils.toString(new UrlEncodedFormEntity(pairs, charset));

            }

            HttpGet httpGet = new HttpGet(url);

            CloseableHttpResponse response = httpClient.execute(httpGet);

            int statusCode = response.getStatusLine().getStatusCode();

            if (statusCode != 200) {

                httpGet.abort();

                throw new RuntimeException("HttpClient,error status code :" + statusCode);

            }

            HttpEntity entity = response.getEntity();

            String result = null;

            if (entity != null){

                result = EntityUtils.toString(entity, "utf-8");

            }

            EntityUtils.consume(entity);

            response.close();

            return result;

        } catch (Exception e) {

            e.printStackTrace();

        }

        return null;

    }

    /**

     * HTTP Post 获取内容

     * @param url  请求的url地址 ?之前的地址

     * @param params 请求的参数

     * @param charset    编码格式

     * @return    页面内容

     */

    public static String doPost(String url,Map<String,String> params,String charset){

        if(StringUtils.isBlank(url)){

            return null;

        }

        try {

            List<NameValuePair> pairs = null;

            if(params != null && !params.isEmpty()){

                pairs = new ArrayList<NameValuePair>(params.size());

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

                    String value = entry.getValue();

                    if(value != null){

                        pairs.add(new BasicNameValuePair(entry.getKey(),value));

                    }

                }

            }

            HttpPost httpPost = new HttpPost(url);

            if(pairs != null && pairs.size() > 0){

                httpPost.setEntity(new UrlEncodedFormEntity(pairs,CHARSET));

            }

            CloseableHttpResponse response = httpClient.execute(httpPost);

            int statusCode = response.getStatusLine().getStatusCode();

            if (statusCode != 200) {

                httpPost.abort();

                throw new RuntimeException("HttpClient,error status code :" + statusCode);

            }

            HttpEntity entity = response.getEntity();

            String result = null;

            if (entity != null){

                result = EntityUtils.toString(entity, "utf-8");

            }

            EntityUtils.consume(entity);

            response.close();

            return result;

        } catch (Exception e) {

            e.printStackTrace();

        }

        return null;

    }

    public static void main(String []args){

        String getData = doGet("http://www.oschina.net/",null);

        System.out.println(getData);

        System.out.println("----------------------分割线-----------------------");

        String postData = doPost("http://www.oschina.net/",null);

        System.out.println(postData);

    }

}