Wechat send template message - implement public method through reflection and generics
In actual business, multiple template messages will be sent, and the number of fields in each template message is inconsistent. To send multiple different templates, you need to modify the code or add new methods to achieve it.
Every time you write overtime, you are inseparable, and the workers swear not to work overtime! ! !
Write once and call many times through reflection and generics.
package ;
import cn.hutool.http.HttpUtil;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.jetbrains.annotations.NotNull;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;
import java.lang.reflect.Field;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;
/**
* @author shiyi on 2022/3/22 9:32
*/
@Slf4j
@Component
public class WechatMessage<T> {
public static final String TEMPLATE_URL = "https://api.weixin.qq.com/cgi-bin/message/template/send?access_token=";
@Autowired
private RedisTemplate<String, Object> redisTemplate;
/**
* 微信模板消息，通用
*/
public void sendPublicMessage(String templateId, String openId, T t) {
// 获取access_token
String accessToken = getAccessToken();
// 设置模板消息基本参数
Map<String, Object> map = getStringObjectMap(templateId, openId);
// 获取实例
Class<?> tClass = t.getClass();
try {
sendMessage(WechatMessage.TEMPLATE_URL + accessToken, tClass, map, t);
} catch (IllegalAccessException | InstantiationException e) {
log.error("发送模板消息异常:{}", e.getMessage());
e.printStackTrace();
}
}
@NotNull
private Map<String, Object> getStringObjectMap(String templateId, String openId) {
Map<String, Object> map = new HashMap<>();
map.put("touser", openId);
map.put("template_id", templateId);
map.put("appid", "xxx");
map.put("url", "http://www.tshuide.com/wechatyy/");
return map;
}
/**
* 发送消息
* @param url 微信模板消息url
*/
private void sendMessage(String url, Class<?> aClass, Map<String, Object> map, T t) throws IllegalAccessException, InstantiationException {
// 通过反射拿到多个参数设置，然后发送模板消息
Map<String, Object> valueBean = new HashMap<>();
Field[] fields = aClass.getDeclaredFields();
for (Field field : fields) {
field.setAccessible(true);
String name = field.getName();
Map<Object, Object> colorBean = new HashMap<>();
colorBean.put("color","#009100");
colorBean.put("value",field.get(t));
valueBean.put(name, colorBean);
}
map.put("data", valueBean);
String msg = JSON.toJSONString(map);
log.error("发送模板消息体：{}", msg);
String post = HttpUtil.post(url, msg);
log.error("发送结果:{}", post);
}
/**
* 获取微信access_token
*/
private String getAccessToken() {
Map<String, Object> map = new HashMap<>();
map.put("appid", "xxx");
map.put("secret", "xxx");
String accessToken = (String) redisTemplate.opsForValue().get("access_token");
if (StringUtils.isEmpty(accessToken)) {
String s = HttpUtil.get("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential", map);
JSONObject jsonObject = JSONObject.parseObject(s);
accessToken = (String) jsonObject.get("access_token");
redisTemplate.opsForValue().set("access_token", accessToken, 30, TimeUnit.MINUTES);
}
return accessToken;
}
}
Call example.
1. Create a template message entity.
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
/**
* @author shiyi on 2022/3/22 11:17
*/
@Data
@NoArgsConstructor
@AllArgsConstructor
public class OperationTempVO {
private String first;
private String keyword1;
private String keyword2;
private String keyword3;
private String remark;
}
2. Call the public method of sending messages.
OperationTempVO tempVO = new OperationTempVO("您好，您有一个运维订单状态更新", entity.getOperationId(),entity.getReview() == 1 ? "通过" : "驳回",DateHelper.dateToString(new Date()), rejecteReason);
wechatMessage.sendPublicMessage("755BWMFm_6f73yWwdt94LRzO", "o8g6Ww_GQmaoS", tempVO);
Different templates only need to create different template entity classes and call public methods.
I am amnesia, an Internet migrant worker who has worked in Internet development for three years and has five years of work experience. If it helps you, please like and comment
