springboot集成微信和QQ第三方登录

一、首先去腾讯开放平台申请相应的appid等，完成后在yml文件配置如下：

constants:
    # QQ
    qqAppId: *****
    qqAppSecret: *****
    qqRedirectUrl: *****
    #WECHAT
    weChatAppId: *****
    weChatAppSecret: *****
    weChatRedirectUrl: *****

建立配置类Constants：

/**
 * 常量配置类
 */
@Configuration
@ConfigurationProperties(prefix = "constants")
public class Constants {

	@NotEmpty
	private String qqAppId;

	@NotEmpty
	private String qqAppSecret;

	@NotEmpty
	private String qqRedirectUrl;

	@NotEmpty
	private String weChatAppId;

	@NotEmpty
	private String weChatAppSecret;

	@NotEmpty
	private String weChatRedirectUrl;

	public String getQqAppId() {
		return qqAppId;
	}

	public void setQqAppId(String qqAppId) {
		this.qqAppId = qqAppId;
	}

	public String getQqAppSecret() {
		return qqAppSecret;
	}

	public void setQqAppSecret(String qqAppSecret) {
		this.qqAppSecret = qqAppSecret;
	}

	public String getQqRedirectUrl() {
		return qqRedirectUrl;
	}

	public void setQqRedirectUrl(String qqRedirectUrl) {
		this.qqRedirectUrl = qqRedirectUrl;
	}

	public String getWeChatAppId() {
		return weChatAppId;
	}

	public void setWeChatAppId(String weChatAppId) {
		this.weChatAppId = weChatAppId;
	}

	public String getWeChatAppSecret() {
		return weChatAppSecret;
	}

	public void setWeChatAppSecret(String weChatAppSecret) {
		this.weChatAppSecret = weChatAppSecret;
	}

	public String getWeChatRedirectUrl() {
		return weChatRedirectUrl;
	}

	public void setWeChatRedirectUrl(String weChatRedirectUrl) {
		this.weChatRedirectUrl = weChatRedirectUrl;
	}
}

二、返回前端登录调用地址：

根据不同的登录类型返回相应的地址，前端直接使用新窗口或者悬浮窗口打开：

public String getLoginUrl(User user) {
		if ("1".equals(user.getLoginType())) {
			// QQ
			return "https://graph.qq.com/oauth2.0/authorize?response_type=code&client_id="
					+ constants.getQqAppId()
					+ "&redirect_uri="
					+ constants.getQqRedirectUrl()
					+ "&state="
					+ user.getAddress();
		} else {
			// 微信
			try {
				return "https://open.weixin.qq.com/connect/qrconnect?appid="
						+ constants.getWeChatAppId()
						+ "&redirect_uri="
						+ constants.getWeChatRedirectUrl()
						+ "&response_type=code&scope=snsapi_login&state="
						+ URLEncoder.encode(
								URLEncoder.encode(user.getAddress(), "utf-8"),
								"utf-8") + "#wechat_redirect";
			} catch (UnsupportedEncodingException e) {
				e.printStackTrace();
				return null;
			}
		}
	}

三、前端打开后会出现登录的二维码等，扫描之后会跳转到我们配置的redirect_uri并在url后面返回code参数和我们自定义的state参数

四、根据code拿到accessToken和openid

这一步稍有区别，qq必须先通过code获取accesstoken,再通过accesstoken获取openid；微信则通过code直接获取accesstoken 和openid

qq:

public String getAccessToken(String code) {
		String url = "https://graph.qq.com/oauth2.0/token?grant_type=authorization_code&client_id="
				+ constants.getQqAppId()
				+ "&client_secret="
				+ constants.getQqAppSecret()
				+ "&code="
				+ code
				+ "&redirect_uri=" + constants.getQqRedirectUrl();
		String resp = RestTemplateUtil.getRestTemplate().getForObject(url,
				String.class);
		if (resp != null && resp.contains("access_token")) {
			Map map = RestTemplateUtil.getParam(resp);
			String access_token = map.get("access_token");
			return access_token;
		}
		return null;
	}

public String getOpenId(String accessToken) {
		String url = "https://graph.qq.com/oauth2.0/me?access_token="
				+ accessToken;
		String resp = RestTemplateUtil.getRestTemplate().getForObject(url,
				String.class);
		if (resp != null && resp.contains("openid")) {
			JSONObject jsonObject = RestTemplateUtil.convertToJson(resp);
			String openid = jsonObject.getString("openid");
			return openid;
		}
		return null;
	}

微信：

public AccessToken getAccessToken(String code) {
		String url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid="
				+ constants.getWeChatAppId() + "&secret="
				+ constants.getWeChatAppSecret() + "&code=" + code
				+ "&grant_type=authorization_code";
		String resp = RestTemplateUtil.getRestTemplate().getForObject(url,
				String.class);
		if (resp != null && resp.contains("access_token")) {
			AccessToken accessToken = JSON.parseObject(resp, AccessToken.class);
			return accessToken;
		}
		return null;
	}

AccessToken 对象为：

/**
	 * 接口调用凭证
	 */
	private String access_token;
	
	/**
	 * access_token接口调用凭证超时时间，单位（秒）
	 */
	private Integer expires_in;
	
	/**
	 * 用户刷新access_token
	 */
	private String refresh_token;
	
	/**
	 * 授权用户唯一标识
	 */
	private String openid;
	
	/**
	 * 用户授权的作用域，使用逗号（,）分隔
	 */
	private String scope;
	
	/**
	 * 当且仅当该网站应用已获得该用户的userinfo授权时，才会出现该字段。
	 */
	private String unionid;

五：根据accesstoken 和openid获取用户信息

qq:

public String getUserInfo(String accessToken, String openId) {
		String url = "https://graph.qq.com/user/get_user_info?access_token="
				+ accessToken + "&oauth_consumer_key=" + constants.getQqAppId()
				+ "&openid=" + openId;
		String resp = RestTemplateUtil.getRestTemplate().getForObject(url,
				String.class);
		return resp;
	}

微信：

/**
	 * 获取用户信息
	 * 
	 * @param accessToken
	 * @param openId
	 * @param lang
	 *            非必须（国家地区语言版本，zh_CN 简体，zh_TW 繁体，en 英语，默认为zh-CN）
	 * @return
	 */
	@Override
	public String getUserInfo(String accessToken, String openId, String lang) {
		String url = "https://api.weixin.qq.com/sns/userinfo?access_token="
				+ accessToken + "&openid=" + openId;
		if (lang != null && !"".equals(lang)) {
			url += "&lang=" + lang;
		}
		String resp = RestTemplateUtil.getRestTemplate().getForObject(url,
				String.class);
		return resp;
	}