Java实现微信公众号模板消息推送给用户

创建消息模板实体对象

package com.htdz.ydkx.wxModelMsg.entity;public class Content {private String value;//消息内容private String color;//内容颜色public String getValue() {return value;}public void setValue(String value) {this.value = value;}public String getColor() {return color;}public void setColor(String color) {this.color = color;}
}

package com.htdz.ydkx.wxModelMsg.entity;public class MsgData {private  Content first;private  Content keyword1;private  Content keyword2;private  Content keyword3;private  Content keyword4;private  Content keyword5;private  Content remark;public Content getFirst() {return first;}public void setFirst(Content first) {this.first = first;}public Content getKeyword1() {return keyword1;}public void setKeyword1(Content keyword1) {this.keyword1 = keyword1;}public Content getKeyword2() {return keyword2;}public void setKeyword2(Content keyword2) {this.keyword2 = keyword2;}public Content getKeyword3() {return keyword3;}public void setKeyword3(Content keyword3) {this.keyword3 = keyword3;}public Content getKeyword4() {return keyword4;}public void setKeyword4(Content keyword4) {this.keyword4 = keyword4;}public Content getKeyword5() {return keyword5;}public void setKeyword5(Content keyword5) {this.keyword5 = keyword5;}public Content getRemark() {return remark;}public void setRemark(Content remark) {this.remark = remark;}
}

package com.htdz.ydkx.wxModelMsg.entity;public class TemplateMsg {//用户openidprivate String touser;//模板消息IDprivate String template_id;//详情跳转页面private String url;//模板数据封装实体private MsgData data;public String getTouser() {return touser;}public void setTouser(String touser) {this.touser = touser;}public String getTemplate_id() {return template_id;}public void setTemplate_id(String template_id) {this.template_id = template_id;}public String getUrl() {return url;}public void setUrl(String url) {this.url = url;}public MsgData getData() {return data;}public void setData(MsgData data) {this.data = data;}
}

消息模板

先获取用于发送消息模板的access_token，创建HttpClientService.java

//因为微信的access_token的有效期是2小时，所以用一个全局变量保存
//可以设置一个定时job，每隔1个半小时更新一次access_token
private static String ACCESS_TOKEN = "";/**
通过https get请求获取access_token
*/
public void sendHttpGetRequest(){String url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=APPID&secret=APPSECRET";try{//替换url中的参数url = url.replace("APPID","公众号的appid");url = url.replace("APPSECRET","公众号的appsecret");//创建默认的httpclient客户端CloseableHttpClient client = HttpClients.createDefault();//通过请求的url初始化一个HttpGet请求HttpGet httpGet = new HttpGet(url);//通过客户端来执行请求CloseableHttpResponse response = client.execute(httpGet);//处理返回的结果//获得响应行 200:响应成功if(response.getStatusLine().getStatusCode() == 200){//获得响应体HttpEntity httpEntity = response.getEntity();String content = EntityUtils.toString(httpEntity,"utf-8");JSONObject jsonObject = JSONObject.parseObject(content);ACCESS_TOKEN = jsonObject.getString("access_token");}}catch (Exception e){e.printStackTrace();}}

发送模板消息方法（HttpClientService.java）

/*** 微信模板消息推送请求 http post 请求* @return*/public static JSONObject sendWXMsgRequest(String url,String data){JSONObject jsonObject = null;try {//创建默认的httpClient客户端CloseableHttpClient client = HttpClients.createDefault();//通过请求的url初始化一个httpPostHttpPost httpPost = new HttpPost(url);//参数设置httpPost.addHeader("Content-Type","application/json;charset=UTF-8");httpPost.addHeader("Accept","application/json");// 参数设置JSONObject obj = JSONObject.parseObject(data);// 解决中文乱码问题StringEntity stringEntity = new StringEntity(obj.toString(), "UTF-8");stringEntity.setContentEncoding("UTF-8");httpPost.setEntity(stringEntity);CloseableHttpResponse response = client.execute(httpPost);//获得响应行 200:响应成功if(response.getStatusLine().getStatusCode() == 200){//获得响应体HttpEntity httpEntity = response.getEntity();String content = EntityUtils.toString(httpEntity,"utf-8");logger.info("content:"+content);jsonObject = JSONObject.parseObject(content);}}catch (Exception e){e.printStackTrace();}return jsonObject;}

 /*** 获取微信token* @return*/public static String getToken(){return ACCESS_TOKEN;}

创建TemplateSendImpl.java类，调用sendWXMsgRequest()方法

package com.htdz.ydkx.wxModelMsg.service.impl;import com.alibaba.fastjson.JSONObject;
import com.htdz.ydkx.wxModelMsg.entity.Content;
import com.htdz.ydkx.wxModelMsg.entity.MsgData;
import com.htdz.ydkx.wxModelMsg.entity.TemplateMsg;
import com.htdz.ydkx.wxModelMsg.service.TemplateSendI;
import com.htdz.ydkx.wxModelMsg.util.HttpClientService;
import org.apache.log4j.Logger;
import org.springframework.stereotype.Service;@Service("templateSend")
public class TemplateSendImpl implements TemplateSendI {private static final Logger logger = Logger.getLogger(TemplateSendImpl.class);@Overridepublic String sendTemplateMsg(String content) {String url = "https://api.weixin.qq.com/cgi-bin/message/template/send?access_token=ACCESS_TOKEN";String access_token = HttpClientService.getToken();String returnMsg = "";try{url = url.replace("ACCESS_TOKEN",access_token);//调用微信微信模板推送接口JSONObject jsonObject = HttpClientService.sendWXMsgRequest(url,content);Integer errorCode = jsonObject.getInteger("errcode");if(null != jsonObject){if(errorCode == 0){returnMsg = "模板推送成功!";}else{returnMsg = "模板推送失败!";}}else{returnMsg = "模板推送失败!";}}catch (Exception e){e.printStackTrace();}return returnMsg;}
}

设置定时任务，生成access_token

package com.htdz.ydkx.job;import com.htdz.ydkx.wxModelMsg.util.HttpClientService;
import org.apache.log4j.Logger;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;@Component
public class TemplateMsgSendJob {private static final Logger logger = Logger.getLogger(TemplateMsgSendJob.class);@Scheduled(cron="0 30 */1 * * ?")public void test(){logger.info("开始调用获取微信token方法TemplateMsgSendJob");try{HttpClientService httpClientService = new HttpClientService();httpClientService.sendHttpGetRequest();}catch (Exception e){e.printStackTrace();}logger.info("结束调用获取微信token方法");}}

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