通过接口

https://api.weixin.qq.com/cgi-bin/user/info?access_token=xxxxxxx&lang=zh_CN

返回的数据如下：

前提是必须绑定 微信开放平台

token如何获取呢

代码如下：

String tokenUrl = "https://api.weixin.qq.com/cgi-bin/token";    //get请求
		String grant_type = "client_credential";
		String appid = "xxxxxxxxx";
		String secret = "xxxxxxxxx";
		//获取token
		StringBuilder sb = new StringBuilder();
		sb.append(tokenUrl);
		sb.append("?grant_type=" + grant_type);
		sb.append("&appid=" + appid);
		sb.append("&secret=" + secret);
		HttpRequest httpRequest = HttpRequest.get(sb.toString());
		JsonNode jsonNode = httpRequest.execute().asJsonNode();
		String  accessToken = jsonNode.get("access_token").asText();
		System.out.println("获取的accessToken为：" + accessToken);

对于unionid的作用