https://open.weixin.qq.com/connect/oauth2/authorize?appid=wx520c15f417810387&redirect_uri=https%3A%2F%2Fchong.qq.com%2Fphp%2Findex.php%3Fd%3D%26c%3DwxAdapter%26m%3DmobileDeal%26showwxpaytitle%3D1%26vb2ctag%3D4_2030_5_1194_60&response_type=code&scope=snsapi_base&state=123#wechat_redirect

https://open.weixin.qq.com/connect/oauth2/authorize?appid=wxf0e81c3bee622d60&redirect_uri=http%3A%2F%2Fnba.bluewebgame.com%2Foauth_response.php&response_type=code&scope=snsapi_userinfo&state=STATE#wechat_redirect

{ "type":"view", "name":"会员中心", "url":"https://open.weixin.qq.com/connect/oauth2/authorize?appid=你的appid&redirect_uri=你配置接收微信认证的地址?response_type=code&scope=snsapi_base&state=1#wechat_redirect" },

//类上的配置
@Controller
@RequestMapping("/wechat")
public class WeChatController{
  @RequestMapping(value = "/redirect", method = RequestMethod.GET)
  public String weixinRedirect(HttpServletRequest request, HttpServletResponse response) {
    return "redirect:https://open.weixin.qq.com/connect/oauth2/authorize?appid=你的appid&redirect_uri=你的服务器处理地址?response_type=code&scope=snsapi_base&state=1&connect_redirect=1#wechat_redirect";
    }
}

@RequestMapping(value = "/oauth", method = RequestMethod.GET)
  public String weixinOAuth(HttpServletRequest request, HttpServletResponse response, Model model) {
    //得到code
    String CODE = request.getParameter("code");
    String APPID = "你的APPID";
    String SECRET = "你的SECRET";
    //换取access_token 其中包含了openid
    String URL = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=APPID&secret=SECRET&code=CODE&grant_type=authorization_code".replace("APPID", APPID).replace("SECRET", SECRET).replace("CODE", CODE);
    //URLConnectionHelper是一个模拟发送http请求的类
    String jsonStr = URLConnectionHelper.sendGet(URL);
    //System.out.println(jsonStr);
    //out.print(jsonStr);
    JSONObject jsonObj = new JSONObject(jsonStr);
    String openid = jsonObj.get("openid").toString();
    //有了用户的opendi就可以的到用户的信息了
    //地址为https://api.weixin.qq.com/sns/userinfo?access_token=ACCESS_TOKEN&openid=OPENID&lang=zh_CN
    //得到用户信息之后返回到一个页面
    model.addAttribute("user", wechatUser);
    return "vip/userInfo";
  }