JAVA之微信根据code获取openId

本是古典何须时尚 2022-12-03 08:59 214阅读 0赞

import com.alibaba.fastjson.JSON;
    import com.alibaba.fastjson.JSONObject;
    import org.junit.Test;
    
    public class myTest {
        @Test
        public void userInfoTest() {
            String appId = "";
            String secret = "";
            String code = "";
            String userInfo = getOpenIdByCode(appId, secret, code);
            System.out.println(userInfo);
        }
    
        /**
         * 微信根据code获取openId
         * HttpClientUtil请求工具类
         */
        private String getOpenIdByCode(String appId, String secret, String code) {
            String userInfo = "";
            //String accessUrl = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=" + appId + "&secret=" + secret + "&code=" + code + "&grant_type=authorization_code";
            String accessUrl = String.format("https://api.weixin.qq.com/sns/oauth2/access_token?appid=%s&secret=%s&code=%s&grant_type=authorization_code", appId, secret, code);
            String accessTokenStr = HttpClientUtil.httpGet(accessUrl);
            JSONObject jsonObject = JSON.parseObject(accessTokenStr);
            if (jsonObject.get("errcode") != null)
                System.out.println(jsonObject.get("errcode").toString() + ":" + jsonObject.get("errmsg"));
            String accessToken = jsonObject.getString("access_token");
            String openId = jsonObject.getString("openid");
            //根据openId和access_token获取用户头像和昵称
            String accessUrl2 = String.format("https://api.weixin.qq.com/sns/userinfo?access_token=%s&openid=%s&lang=zh_CN", accessToken, openId);
            String accessTokenStr2 = HttpClientUtil.httpGet(accessUrl2);
            JSONObject jsonObject2 = JSON.parseObject(accessTokenStr2);
            if (jsonObject2.get("errcode") != null)
                System.out.println(jsonObject.get("errcode").toString() + ":" + jsonObject.get("errmsg"));
            String nickname = jsonObject2.getString("nickname");
            String headimgurl = jsonObject2.getString("headimgurl");
            userInfo = "用户OpenId：" + openId + "用户昵称：" + nickname + "用户头像地址：" + headimgurl;
            return userInfo;
        }
    }