微信获取openid和网页授权

获取openid 
1.引入依赖weixin-java-mp
2.构造网页授权
 @GetMapping("/authorize")
    public String authorize(@RequestParam("returnUrl") String returnUrl) {
        //1. 配置WxMpService
        //2. 调用方法
        String url = projectUrlConfig.getWechatMpAuthorize() + "/sell/wechat/userInfo";
        String redirectUrl = wxMpService.oauth2buildAuthorizationUrl(url, WxConsts.OAUTH2_SCOPE_BASE, URLEncoder.encode(returnUrl));
        return "redirect:" + redirectUrl;
    }

    @GetMapping("/userInfo")
    public String userInfo(@RequestParam("code") String code,
                         @RequestParam("state") String returnUrl) {
        WxMpOAuth2AccessToken wxMpOAuth2AccessToken = new WxMpOAuth2AccessToken();
        try {
            wxMpOAuth2AccessToken = wxMpService.oauth2getAccessToken(code);
        } catch (WxErrorException e) {
            log.error("【微信网页授权】{}", e);
            throw new SellException(ResultEnum.WECHAT_MP_ERROR.getCode(), e.getError().getErrorMsg());
        }
  //拿到openid
        String openId = wxMpOAuth2AccessToken.getOpenId();

        return "redirect:" + returnUrl + "?openid=" + openId;
    }
微信网页授权
访问项目的时候会重定向到wechat/authorize(在前端项目中需要配置项目地址...sell.com和获取openid的地址...wechat/authorize)
成功的话会提示请在微信客户端打开链接
电脑可以直接访问sell.com(有相应配置host,域名直接指向了虚拟机)
手机要访问sell.com的话,要在手机上配置http代理,填写电脑的ip(在无线局域网中),端口8888

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转载自blog.csdn.net/shijiaolong0/article/details/85101670