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httpClient实现微信公众号消息群发

2026-06-01 3 花语

本文内容纲要:

1、实现功能

向关注了微信公众号的微信用户群发消息。(可以是所有的用户,也可以是提供了微信openid的微信用户集合)

2、基本步骤

前提:

****已经有认证的公众号或者测试公众账号

发送消息步骤:

发送一个请求微信去获取access_token 发送一个请求去请求微信发送消息

相关微信接口的信息可以查看:http://www.cnblogs.com/0201zcr/p/5866296.html有测试账号的申请+获取access_token和发送微信消息的url和相关的参数需求。各个参数的意义等。

3、实践

这里通过HttpClient发送请求去微信相关的接口。

1)maven依赖

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

2)httpClient使用方法

使用HttpClient发送请求、接收响应很简单,一般需要如下几步即可。

创建HttpClient对象。 创建请求方法的实例,并指定请求URL。如果需要发送GET请求,创建HttpGet对象;如果需要发送POST请求,创建HttpPost对象。 如果需要发送请求参数,可调用HttpGet、HttpPost共同的setParams(HetpParamsparams)方法来添加请求参数;对于HttpPost对象而言,也可调用setEntity(HttpEntityentity)方法来设置请求参数。 调用HttpClient对象的execute(HttpUriRequestrequest)发送请求,该方法返回一个HttpResponse。 调用HttpResponse的getAllHeaders()、getHeaders(Stringname)等方法可获取服务器的响应头;调用HttpResponse的getEntity()方法可获取HttpEntity对象,该对象包装了服务器的响应内容。程序可通过该对象获取服务器的响应内容。 释放连接。无论执行方法是否成功,都必须释放连接——这里使用了连接池,可以交给连接池去处理

3)实例

1、发送请求的类

importcom.alibaba.druid.support.json.JSONUtils; importcom.alibaba.druid.support.logging.Log; importcom.alibaba.druid.support.logging.LogFactory; importcom.alibaba.fastjson.JSON; importcom.alibaba.fastjson.JSONObject; importcom.seewo.core.util.json.JsonUtils; importorg.apache.commons.collections.map.HashedMap; importorg.apache.commons.lang.StringUtils; importorg.apache.http.HttpHost; importorg.apache.http.NameValuePair; importorg.apache.http.client.ClientProtocolException; importorg.apache.http.client.HttpClient; importorg.apache.http.client.ResponseHandler; importorg.apache.http.client.methods.HttpGet; importorg.apache.http.client.methods.HttpPost; importorg.apache.http.conn.params.ConnRoutePNames; importorg.apache.http.conn.scheme.Scheme; importorg.apache.http.conn.ssl.SSLSocketFactory; importorg.apache.http.entity.StringEntity; importorg.apache.http.impl.client.BasicResponseHandler; importorg.apache.http.impl.client.DefaultHttpClient; importorg.apache.http.impl.conn.PoolingClientConnectionManager; importorg.apache.http.message.BasicNameValuePair; importorg.springframework.http.HttpHeaders; importorg.springframework.http.MediaType; importjavax.net.ssl.SSLContext; importjavax.net.ssl.X509TrustManager; importjavax.security.cert.CertificateException; importjavax.security.cert.X509Certificate; importjava.io.IOException; importjava.text.MessageFormat; importjava.util.ArrayList; importjava.util.List; importjava.util.Map; /** *Createdbyzhengcanruion16/9/20. */ publicclassWechatAPIHander{ /** *获取token接口 */ privateStringgetTokenUrl="https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={0}&secret={1}"; /** *拉微信用户信息接口 */ privateStringgetUserInfoUrl="https://api.weixin.qq.com/cgi-bin/user/info?access_token={0}&openid={1}"; /** *主动推送信息接口(群发) */ privateStringsendMsgUrl="https://api.weixin.qq.com/cgi-bin/message/mass/sendall?access_token={0}"; privateHttpClientwebClient; privateLoglog=LogFactory.getLog(getClass()); publicvoidinitWebClient(StringproxyHost,intproxyPort){ this.initWebClient(); if(webClient!=null&&!StringUtils.isEmpty(proxyHost)){ HttpHostproxy=newHttpHost(proxyHost,proxyPort); webClient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY,proxy); } } /** *@desc初始化创建WebClient */ publicvoidinitWebClient(){ log.info("initWebClientstart...."); try{ PoolingClientConnectionManagertcm=newPoolingClientConnectionManager(); tcm.setMaxTotal(10); SSLContextctx=SSLContext.getInstance("TLS"); X509TrustManagertm=newX509TrustManager(){ @Override publicvoidcheckClientTrusted(java.security.cert.X509Certificate[]x509Certificates,Strings)throwsjava.security.cert.CertificateException{ } @Override publicvoidcheckServerTrusted(java.security.cert.X509Certificate[]x509Certificates,Strings)throwsjava.security.cert.CertificateException{ } @Override publicjava.security.cert.X509Certificate[]getAcceptedIssuers(){ returnnewjava.security.cert.X509Certificate[0]; } }; ctx.init(null,newX509TrustManager[]{tm},null); SSLSocketFactoryssf=newSSLSocketFactory(ctx,SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER); Schemesch=newScheme("https",443,ssf); tcm.getSchemeRegistry().register(sch); webClient=newDefaultHttpClient(tcm); }catch(Exceptionex){ log.error("initWebClientexception",ex); }finally{ log.info("initWebClientend...."); } } /** *@desc获取授权token *@paramappid *@paramsecret *@return */ publicStringgetAccessToken(Stringappid,Stringsecret){ StringaccessToken=null; try{ log.info("getAccessTokenstart.{appid="+appid+",secret:"+secret+"}"); Stringurl=MessageFormat.format(this.getTokenUrl,appid,secret); Stringresponse=executeHttpGet(url); Mapmap=JsonUtils.jsonToMap(response); accessToken=(String)map.get("access_token"); /*ObjectObject=JSONUtils.parse(response); accessToken=jsonObject.getString("access_token");*/ //accessToken=JsonUtils.read(response,"access_token"); }catch(Exceptione){ log.error("getaccesstoeknexception",e); } returnaccessToken; } /** *@desc推送信息 *@paramtoken *@parammsg *@return */ publicStringsendMessage(Stringtoken,Stringmsg){ try{ log.info("\n\nsendMessagestart.token:"+token+",msg:"+msg); Stringurl=MessageFormat.format(this.sendMsgUrl,token); HttpPostpost=newHttpPost(url); ResponseHandler<?>responseHandler=newBasicResponseHandler(); //这里必须是一个合法的json格式数据,每个字段的意义可以查看上面连接的说明,content后面的test是要发送给用户的数据,这里是群发给所有人 msg="{\"filter\":{\"is_to_all\":true},\"text\":{\"content\":\"test\"},\"msgtype\":\"text\"}\""; //设置发送消息的参数 StringEntityentity=newStringEntity(msg); //解决中文乱码的问题 entity.setContentEncoding("UTF-8"); entity.setContentType("application/json"); post.setEntity(entity); //发送请求 Stringresponse=(String)this.webClient.execute(post,responseHandler); log.info("returnresponse=====start======"); log.info(response); log.info("returnresponse=====end======"); returnresponse; }catch(Exceptione){ log.error("getuserinfoexception",e); returnnull; } } /** *@desc发起HTTPGET请求返回数据 *@paramurl *@return *@throwsIOException *@throwsClientProtocolException */ privateStringexecuteHttpGet(Stringurl)throwsIOException,ClientProtocolException{ ResponseHandler<?>responseHandler=newBasicResponseHandler(); Stringresponse=(String)this.webClient.execute(newHttpGet(url),responseHandler); log.info("returnresponse=====start======"); log.info(response); log.info("returnresponse=====end======"); returnresponse; } }

2、Controller和Service层调用

@RequestMapping(value="/testHttpClient",method=RequestMethod.GET) publicDataMaptest(){ WechatAPIHanderwechatAPIHander=newWechatAPIHander(); //获取access_token //第一个参数是你appid,第二个参数是你的秘钥,需要根据你的具体情况换 StringaccessToken=wechatAPIHander.getAccessToken("appid","scerpt"); //发送消息 wechatAPIHander.sendMessage(accessToken,"测试数据"); returnnewDataMap().addAttribute("DATA",accessToken); }

3、结果

假如你关注了微信公众号中看到你刚刚发送的test消息。

HttpClient学习文档:https://pan.baidu.com/s/1miO1eOg

致谢:感谢您的阅读

本文内容总结:

原文链接:https://www.cnblogs.com/0201zcr/p/5893600.html