微信公众平台开发中使用Java如何实现获取用户的信息

package com.cuiyongzhi.wechat.common; import java.util.HashMap;import com.cuiyongzhi.web.util.GlobalConstants;import com.cuiyongzhi.wechat.util.HttpUtils; import net.sf.json.JSONObject; public class GetUseInfo {  public static HashMap<String, String> Openid_userinfo(String openid)  throws Exception { HashMap<String, String> params = new HashMap<String, String>(); params.put("access_token",  GlobalConstants.getInterfaceUrl("access_token")); //定时器中获取到的token params.put("openid", openid); //需要获取的用户的openid params.put("lang", "zh_CN"); String subscribers = HttpUtils.sendGet(  GlobalConstants.getInterfaceUrl("OpenidUserinfoUrl"), params); System.out.println(subscribers); params.clear(); //这里返回参数只取了昵称、头像、和性别 params.put("nickname",  JSONObject.fromObject(subscribers).getString("nickname")); //昵称 params.put("headimgurl",  JSONObject.fromObject(subscribers).getString("headimgurl")); //图像 params.put("sex", JSONObject.fromObject(subscribers).getString("sex")); //性别 return params; } }