chenglijuan
110 lines
4.3 KiB
Java
110 lines
4.3 KiB
Java
package com.example.mini_program.service;
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import com.example.mini_program.config.WxMiniAppConfig;
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import com.example.mini_program.util.HttpUtil;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import lombok.RequiredArgsConstructor;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.stereotype.Service;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* 微信小程序订阅消息服务
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* 调用微信 /cgi-bin/message/subscribe/send 接口推送订阅消息
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* <p>
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* 模板字段映射：
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* name1 (姓名) → 访客姓名
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* thing3 (事物) → 来访事由
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* date8 (日期) → 预约时间
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* thing10 (事物) → 到访区域
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* phrase18 (短语) → 审批状态
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*/
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@Slf4j
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@Service
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@RequiredArgsConstructor
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public class WxSubscribeMessageService {
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private static final String GET_TOKEN_URL =
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"https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=%s&secret=%s";
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private static final String SEND_MSG_URL =
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"https://api.weixin.qq.com/cgi-bin/message/subscribe/send?access_token=%s";
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private final WxMiniAppConfig wxMiniAppConfig;
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private final ObjectMapper objectMapper;
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@Value("${wx.miniapp.subscribe-template-id:}")
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private String templateId;
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/**
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* 获取小程序 access_token
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*/
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public String getAccessToken() {
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String url = String.format(GET_TOKEN_URL, wxMiniAppConfig.getAppid(), wxMiniAppConfig.getSecret());
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try {
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Map<String, Object> resp = objectMapper.readValue(HttpUtil.get(url), Map.class);
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if (resp.containsKey("access_token")) {
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return (String) resp.get("access_token");
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}
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throw new RuntimeException("获取access_token失败: " + resp);
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} catch (Exception e) {
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throw new RuntimeException("获取access_token异常: " + e.getMessage(), e);
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}
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}
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/**
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* 发送订阅消息
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* 所有字段不允许为空字符串（微信返回47003），name类型不接受纯数字
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*/
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public void sendSubscribeMessage(String openid, String visitorName, String reason,
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String visitTime, String area, String status) {
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if (templateId == null || templateId.isEmpty()) {
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log.warn("未配置 subscribe-template-id，跳过订阅消息推送");
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return;
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}
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String accessToken = getAccessToken();
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String url = String.format(SEND_MSG_URL, accessToken);
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// name1 是 name 类型，纯数字会被微信拒绝，需加前缀兜底
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String safeName = blankToDefault(visitorName, "访客");
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if (safeName.matches("^\\d+$")) {
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safeName = "访客" + safeName;
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}
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Map<String, Object> data = new HashMap<>();
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data.put("name1", Map.of("value", safeName));
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data.put("thing3", Map.of("value", blankToDefault(reason, "来访")));
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data.put("date8", Map.of("value", blankToDefault(visitTime, "待定")));
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data.put("thing10", Map.of("value", blankToDefault(area, "未指定")));
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data.put("phrase18", Map.of("value", blankToDefault(status, "待审核")));
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Map<String, Object> body = new HashMap<>();
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body.put("touser", openid);
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body.put("template_id", templateId);
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//点击模板卡片后的跳转页面，仅限本小程序内的页面。
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body.put("page", "pages/records/records");
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body.put("data", data);
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//跳转小程序类型：developer为开发版；trial为体验版；formal为正式版；默认为正式版
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body.put("miniprogram_state", "formal");
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body.put("lang", "zh_CN");
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try {
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String json = objectMapper.writeValueAsString(body);
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Map<String, Object> resp = objectMapper.readValue(HttpUtil.postJson(url, json), Map.class);
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if ("0".equals(String.valueOf(resp.get("errcode")))) {
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log.info("订阅消息推送成功, openid={}", openid);
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} else {
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log.error("订阅消息推送失败: {}", resp);
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}
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} catch (Exception e) {
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log.error("订阅消息推送异常", e);
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}
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}
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private static String blankToDefault(String val, String def) {
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return (val != null && !val.isEmpty()) ? val : def;
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}
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}
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