Java實現(xiàn)的微信公眾號獲取微信用戶信息示例

public class WeChatUserInfoTest {
  public static void main(String[] args) {
    String accessToken = "";//測試accessToken寫死 真實環(huán)境不應該寫死
    String openId = "";//測試openId寫死 真實環(huán)境不應該寫死
    Map<String, String> params = new HashMap<>();
    params.put("access_token", accessToken);
    params.put("openid", openId);
    params.put("lang", "zh_CN");
    String url = "https://api.weixin.qq.com/cgi-bin/user/info";
    String response = HttpClientUtil.doGet(url, params);
    JSONObject object = JSONObject.parseObject(response);
    /**
     * 移動應用、網(wǎng)站應用和公眾帳號關聯(lián)到同一個微信開放平臺帳號時，unionid是唯一的，
     * 如果需要打通移動應用、網(wǎng)站應用和公眾帳號或者以后要打通，很有必要存儲unionId
     */
    String unionId = object.getString("unionid");
    /**
     * nickName很可能是一些古怪的符號，因此實際場景需要對nickName做處理，可以使用emoji-java的工具類去處理
     */
    String nickName = object.getString("nickname");
    String avatarUrl = object.getString("headimgurl");
  }
}

public class WeChatUserInfoTest {
  public static String getOpenId(String code, String appId, String appSecret) {
    Map<String, String> params = new HashMap<>();
    params.put("appid", appId);
    params.put("secret", appSecret);
    params.put("code", code);
    params.put("grant_type", "authorization_code");
    String url = "https://api.weixin.qq.com/sns/oauth3/access_token";
    String response = HttpClientUtil.doGet(url, params);
    JSONObject object = JSONObject.parseObject(response);
    String openId = object.getString("openid");
    return openId;
  }
  public static void main(String[] args) {
    String appId = "";//對應的appId
    String appSecret = "";//對應的appSecret
    String code = "";//前端獲取到的用戶code
    String openId = getOpenId(appId, appSecret, code);
    System.out.println(openId);
  }
}