java开发微信端获取code和opendId，access_token,用户列表

第一步：页面授权获取code,去你的微信公众平台配置就行

https://open.weixin.qq.com/connect/oauth2/authorize?appid=Appid&redirect_uri=https://xxx/xxx/xxx.html&response_type=code&scope=snsapi_userinfo&state=123&connect_redirect=1#wechat_redirecthttps://open.wei