微信公众号授权及获取用户信息

1、映射配置文件

@Data
@Component
@ConfigurationProperties(prefix = "wx.mp")
public class WxMpProperties {
    /**
     * 设置微信公众号的appid
     */
    private String appId;
    /**
     * 设置微信公众号的app secret
     */
    private String secret;
    /**
     * 设置微信公众号的token
     */
    private String token;
    /**
     * 设置微信公众号的EncodingAESKey
     */
    private String aesKey;
}

2、微信配置信息

@Configuration
@Slf4j
public class WxConfig {
    @Autowired
    private WxMpProperties wxMpProperties;
    @Autowired
    private RedisTemplate redisTemplate;

    @Bean
    public WxMpService wxMpService() {
        RedisConnectionFactory factory = redisTemplate.getConnectionFactory();
        WxRedisOps redisOps = new RedisTemplateWxRedisOps(new StringRedisTemplate(factory));
        WxMpRedisConfigImpl configStorage = new WxMpRedisConfigImpl(redisOps, Redis.getProjectName());
        configStorage.setAppId(wxMpProperties.getAppId());
        configStorage.setSecret(wxMpProperties.getSecret());
        configStorage.setToken(wxMpProperties.getToken());
        configStorage.setAesKey(wxMpProperties.getAesKey());
        WxMpService service = new WxMpServiceImpl();
        service.setWxMpConfigStorage(configStorage);
        log.info("微信公众号初始化完成...");
        return service;
    }
}

3、授权获取code

 参考微信官方文档 

let flag = confirm("该功能需要获取您的头像、昵称信息、openId");
if (flag) {
      let href = window.location.href;
      let redirect = href.indexOf("?") ? href.split("?")[0] : href;
      let appid = "**************";
      let api = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=" + appid + "&redirect_uri=" + encodeURIComponent(redirect) + "&response_type=code&scope=snsapi_userinfo&state=STATE#wechat_redirect";
      window.location.href = api;
}

$(function () {
    let code = getQueryString('code');
})

//获取url中的参数
function getQueryString(name) {
    let reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");
    let r = window.location.search.substr(1).match(reg);
    return r == null ? '' : unescape(r[2])
}

4、通过code获取用户基本信息

 WxOAuth2AccessToken accessToken = wxMpService.getOAuth2Service().getAccessToken(code);
 WxOAuth2UserInfo userInfo = wxMpService.getOAuth2Service().getUserInfo(accessToken, "zh_CN");
 通过userInfo可以获取用户openid、图像等基本信息
 userInfo.getOpenid()；//获取oopenid
 Base64.getEncoder().encodeToString(userInfo.getNickname().getBytes())；//获取昵称
 userInfo.getHeadImgUrl()；//获取图像