旗开得胜

src/main/java/com/greenorange/promotion/service/wechat/WechatGetQrcodeService.java

@@ -0,0 +1,12 @@
+package com.greenorange.promotion.service.wechat;
+
+import com.greenorange.promotion.config.WxAccessToken;
+
+public interface WechatGetQrcodeService {
+
+    /**
+     * 获取微信token
+     */
+    WxAccessToken getAccessToken();
+
+}

src/main/java/com/greenorange/promotion/service/wechat/impl/WechatGetQrcodeServiceImpl.java

@@ -0,0 +1,54 @@
+package com.greenorange.promotion.service.wechat.impl;
+
+
+
+import cn.hutool.http.HttpUtil;
+import com.google.gson.Gson;
+import com.greenorange.promotion.config.WxAccessToken;
+import com.greenorange.promotion.service.wechat.WechatGetQrcodeService;
+import io.swagger.v3.oas.annotations.media.Schema;
+import jakarta.annotation.Resource;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.stereotype.Service;
+
+import java.util.concurrent.TimeUnit;
+
+@Service
+public class WechatGetQrcodeServiceImpl implements WechatGetQrcodeService {
+
+
+    private final static String ACCESS_TOKEN_KEY = "accessToken";
+
+    @Resource
+    private RedisTemplate<String, Object> redisTemplate;
+
+
+    @Schema(description = "小程序 appId")
+    @Value("${wx.mini.appId}")
+    private String appId;
+
+    @Schema(description = "小程序 appSecret")
+    @Value("${wx.mini.appSecret}")
+    private String appSecret;
+
+
+    /**
+     * 获取接口调用凭据
+     */
+    @Override
+    public WxAccessToken getAccessToken() {
+        String url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" + appId + "&secret=" + appSecret;
+        String response = null;
+        try {
+            response = HttpUtil.get(url);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        Gson gson = new Gson();
+        WxAccessToken wxAccessToken = gson.fromJson(response, WxAccessToken.class);
+        String access_token = wxAccessToken.getAccess_token();
+        redisTemplate.opsForValue().set(ACCESS_TOKEN_KEY, access_token, 7200, TimeUnit.SECONDS);
+        return wxAccessToken;
+    }
+}