跪求个微信扫码登陆的代码实例！如果有支付的话感激不尽

[qqw6789567]

新手草鸟！！！！！！！！！！！！！！！

[scott_129]

//appid,secret就是你在开放平台上申请的appid和secret.
//我这里就没有把我的填上了。另外你在申请的时候，需要要你填写一个回调域
//这个地址必须是外网可以访问的地址，你可以通过修改电脑的host配置文件，映射到你本地。
//你在页面上给个a标签先访问loginWechat.do，由于这是公司的项目，所有只能给你看这一部分。
//调试的时候，最好不要用firefox，因为firefox会将外网映射到本地的地址给屏蔽掉，所以一直会出现会先访问不到。
@RequestMapping("/loginWechat.do")
	public void loginWeChat(HttpServletRequest request, HttpServletResponse response) {
		response.setContentType("text/html;charset=utf-8");
		try {
			String state = request.getSession().getId();
			int i = new Random().nextInt();
			state = MD5Util.MD5(state + "" + i);
			response.sendRedirect("https://open.weixin.qq.com/connect/qrconnect?appid=appid&redirect_uri=回调域/wechat/afterLoginWechat&response_type=code&scope=snsapi_login&state="
					+ state + "#wechat_redirect");
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

@RequestMapping("/afterLoginWechat")
	public String AfterLoginRedirect(HttpServletRequest request, HttpServletResponse response, RedirectAttributes attr) {
		response.setContentType("text/html;charset=utf-8");
		String code = request.getParameter("code");
		HttpURLConnection conn = null;
		InputStream is = null;
		BufferedReader br = null;
		try {
			// 通过code获取access_token
			URL url = new URL(
					"https://api.weixin.qq.com/sns/oauth2/access_token?appid=appid&secret=secret&code="
							+ code + "&grant_type=authorization_code");
			conn = (HttpURLConnection) url.openConnection();
			conn.connect();
			is = conn.getInputStream();
			br = new BufferedReader(new InputStreamReader(is));
			StringBuilder sb = new StringBuilder();
			while (br.read() != -1) {
				sb.append(br.readLine());
			}
			sb.insert(0, "{");
			WechatDto wechatDto = JsonUtils.jsonToObject(sb.toString(), WechatDto.class);

			// 通过access_token,openid获取用户信息
			url = new URL("https://api.weixin.qq.com/sns/userinfo?access_token=" + wechatDto.getAccess_token()
					+ "&openid=" + wechatDto.getOpenid());
			conn = (HttpURLConnection) url.openConnection();
			conn.connect();
			is = conn.getInputStream();
			br = new BufferedReader(new InputStreamReader(is));
			sb = new StringBuilder();
			while (br.read() != -1) {
				sb.append(br.readLine());
			}
			
		} catch (MalformedURLException e) {
			LOG.error(e.getMessage(), e);
		} catch (IOException e) {
			LOG.error(e.getMessage(), e);
		} finally {
			try {
				if (is != null)
					is.close();
				if (br != null)
					br.close();
			} catch (IOException e) {
				LOG.error(e.getMessage(), e);
			}
		}
		return "redirect:/user/outRegisterAndLogin.html";
	}

[qqw6789567]

相当感谢！！！！

[二当家的素材网]

楼主大神啊，最近刚做的用到了，源码演示下载：http://www.erdangjiade.com/php/1034.html