httpClient實現微信公眾號訊息群發，httpclient公眾

httpClient實現公眾號訊息群發，httpclient公眾

1、實現功能　

　　向關注了公眾號的使用者群發訊息。（可以是所有的使用者，也可以是提供了openid的使用者集合）

2、基本步驟

前提：

　　已經有認證的公眾號或者測試公眾帳號

發送訊息步驟：

相關介面的資訊可以查看：http://www.cnblogs.com/0201zcr/p/5866296.html 有測試帳號的申請 + 擷取access_token和發送訊息的url和相關的參數需求。各個參數的意義等。

3、實踐

　　這裡通過HttpClient發送請求去相關的介面。

1）maven依賴

<dependency>    <groupId>org.apache.httpcomponents</groupId>    <artifactId>httpclient</artifactId>    <version>4.3.1</version></dependency>

2）httpClient使用方法

使用HttpClient發送請求、接收響應很簡單，一般需要如下幾步即可。

 3）執行個體

1、發送請求的類

import com.alibaba.druid.support.json.JSONUtils;import com.alibaba.druid.support.logging.Log;import com.alibaba.druid.support.logging.LogFactory;import com.alibaba.fastjson.JSON;import com.alibaba.fastjson.JSONObject;import com.seewo.core.util.json.JsonUtils;import org.apache.commons.collections.map.HashedMap;import org.apache.commons.lang.StringUtils;import org.apache.http.HttpHost;import org.apache.http.NameValuePair;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.HttpClient;import org.apache.http.client.ResponseHandler;import org.apache.http.client.methods.HttpGet;import org.apache.http.client.methods.HttpPost;import org.apache.http.conn.params.ConnRoutePNames;import org.apache.http.conn.scheme.Scheme;import org.apache.http.conn.ssl.SSLSocketFactory;import org.apache.http.entity.StringEntity;import org.apache.http.impl.client.BasicResponseHandler;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.impl.conn.PoolingClientConnectionManager;import org.apache.http.message.BasicNameValuePair;import org.springframework.http.HttpHeaders;import org.springframework.http.MediaType;import javax.net.ssl.SSLContext;import javax.net.ssl.X509TrustManager;import javax.security.cert.CertificateException;import javax.security.cert.X509Certificate;import java.io.IOException;import java.text.MessageFormat;import java.util.ArrayList;import java.util.List;import java.util.Map;/** * Created by zhengcanrui on 16/9/20. */public class WechatAPIHander {        /**         * 擷取token介面         */        private String getTokenUrl = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={0}&secret={1}";        /**         * 拉使用者資訊介面         */        private String getUserInfoUrl = "https://api.weixin.qq.com/cgi-bin/user/info?access_token={0}&openid={1}";        /**         * 主動推送資訊介面(群發)         */        private String sendMsgUrl = "https://api.weixin.qq.com/cgi-bin/message/mass/sendall?access_token={0}";        private HttpClient webClient;        private Log log = LogFactory.getLog(getClass());        public void initWebClient(String proxyHost, int proxyPort){            this.initWebClient();            if(webClient != null && !StringUtils.isEmpty(proxyHost)){                HttpHost proxy = new HttpHost(proxyHost, proxyPort);                webClient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy);            }        }        /**         * @desc 初始化建立 WebClient         */        public void initWebClient() {            log.info("initWebClient start....");            try {                PoolingClientConnectionManager tcm = new PoolingClientConnectionManager();                tcm.setMaxTotal(10);                SSLContext ctx = SSLContext.getInstance("TLS");                X509TrustManager tm = new X509TrustManager() {                    @Override                    public void checkClientTrusted(java.security.cert.X509Certificate[] x509Certificates, String s) throws java.security.cert.CertificateException {                    }                    @Override                    public void checkServerTrusted(java.security.cert.X509Certificate[] x509Certificates, String s) throws java.security.cert.CertificateException {                    }                    @Override                    public java.security.cert.X509Certificate[] getAcceptedIssuers() {                        return new java.security.cert.X509Certificate[0];                    }                };                ctx.init(null, new X509TrustManager[] { tm }, null);                SSLSocketFactory ssf = new SSLSocketFactory(ctx, SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);                Scheme sch = new Scheme("https", 443, ssf);                tcm.getSchemeRegistry().register(sch);                webClient = new DefaultHttpClient(tcm);            } catch (Exception ex) {                log.error("initWebClient exception", ex);            } finally {                log.info("initWebClient end....");            }        }        /**         * @desc 擷取授權token         * @param appid         * @param secret         * @return         */        public String getAccessToken(String appid, String secret) {            String accessToken = null;            try {                log.info("getAccessToken start.{appid=" + appid + ",secret:" + secret + "}");                String url = MessageFormat.format(this.getTokenUrl, appid, secret);                String response = executeHttpGet(url);                Map map = JsonUtils.jsonToMap(response);                accessToken = (String) map.get("access_token");               /* Object Object = JSONUtils.parse(response);                accessToken = jsonObject.getString("access_token");*///                accessToken = JsonUtils.read(response, "access_token");            } catch (Exception e) {                log.error("get access toekn exception", e);            }            return accessToken;        }        /**         * @desc 推送資訊         * @param token         * @param msg         * @return         */        public String sendMessage(String token,String msg){            try{                log.info("\n\nsendMessage start.token:"+token+",msg:"+msg);                String url = MessageFormat.format(this.sendMsgUrl, token);                HttpPost post = new HttpPost(url);                ResponseHandler<?> responseHandler = new BasicResponseHandler();                //這裡必須是一個合法的json格式資料,每個欄位的意義可以查看上面串連的說明,content後面的test是要發送給使用者的資料,這裡是群發給所有人                msg = "{\"filter\":{\"is_to_all\":true},\"text\":{\"content\":\"test\"},\"msgtype\":\"text\"}\"";                //設定發送訊息的參數                StringEntity entity = new StringEntity(msg);                //解決中文亂碼的問題                entity.setContentEncoding("UTF-8");                entity.setContentType("application/json");                post.setEntity(entity);                //發送請求                String response = (String) this.webClient.execute(post, responseHandler);                log.info("return response=====start======");                log.info(response);                log.info("return response=====end======");                return response;            }catch (Exception e) {                log.error("get user info exception", e);                return null;            }        }        /**         * @desc 發起HTTP GET請求返回資料         * @param url         * @return         * @throws IOException         * @throws ClientProtocolException         */        private String executeHttpGet(String url) throws IOException, ClientProtocolException {            ResponseHandler<?> responseHandler = new BasicResponseHandler();            String response = (String) this.webClient.execute(new HttpGet(url), responseHandler);            log.info("return response=====start======");            log.info(response);            log.info("return response=====end======");            return response;        }}

 2、Controller和Service層調用

  @RequestMapping(value = "/testHttpClient", method = RequestMethod.GET)    public DataMap test() {        WechatAPIHander wechatAPIHander = new WechatAPIHander();        //擷取access_token
　　　　　　//第一個參數是你appid，第二個參數是你的秘鑰，需要根據你的具體情況換        String accessToken = wechatAPIHander.getAccessToken("appid","scerpt");         //發送訊息        wechatAPIHander.sendMessage(accessToken, "測試資料");               return new DataMap().addAttribute("DATA",accessToken);    }    

 3、結果

　　假如你關注了公眾號中看到你剛剛發送的test訊息。

HttpClient學習文檔：https://pan.baidu.com/s/1miO1eOg

 致謝：感謝您的閱讀