微信公众号开发中使用Java如何实现获取用户的信息
微信公众号开发中使用Java如何实现获取用户的信息?针对这个问题,这篇文章详细介绍了相对应的分析和解答,希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。
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1、首先需要到微信网站去设置一下,我是直接用的微信测试号。
接口配置信息必须要填写的,所以说必须能将自己的服务发布出去
到此微信配置完毕,接下来就是直接上代码了
2、获取用户信息的方式一共是两种,前提都是用户关注微信公众号,一种是静默获取(snsapi_base,这种方式只能获取openid),另一种是授权获取(snsapi_userinfo,可以获取用户的详细信息)。
先说第一种
(1)首先需要先访问微信的链接
https://open.weixin.qq.com/connect/oauth3/authorize?appid=xxxxxxxxxxxxxxxx&redirect_uri=http://xxxxxx/open/openid&response_type=code&scope=snsapi_base
这里的 uri就是直接回掉我们的服务地址,一定要记住,服务校验的判断,我是按照来判断的echostr(第二种方式也是这样)
package net.itraf.controller; import java.io.IOException; import java.io.InputStream; import java.io.PrintWriter; import java.net.HttpURLConnection; import java.net.MalformedURLException; import java.net.URL; import javax.servlet.http.HttpServletResponse; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import com.alibaba.fastjson.JSONObject; @Controller @RequestMapping("/open") public class OpenController { @RequestMapping("/toOpenId") public @ResponseBody String getOpenId(String code,String echostr,HttpServletResponse res) throws IOException{ if(echostr==null){ String url="https://api.weixin.qq.com/sns/oauth3/access_token?appid=wx24d47d2080f54c5b&secret=95011ac70909e8cca2786217dd80ee3f&code="+code+"&grant_type=authorization_code"; System.out.println(code); String openId=""; try { URL getUrl=new URL(url); HttpURLConnection http=(HttpURLConnection)getUrl.openConnection(); http.setRequestMethod("GET"); http.setRequestProperty("Content-Type","application/x-www-form-urlencoded"); http.setDoOutput(true); http.setDoInput(true); http.connect(); InputStream is = http.getInputStream(); int size = is.available(); byte[] b = new byte[size]; is.read(b); String message = new String(b, "UTF-8"); JSONObject json = JSONObject.parseObject(message); openId = json.getString("openid"); } catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return openId; }else{ PrintWriter out = res.getWriter(); out.print(echostr); return null; } } //做服务器校验 @RequestMapping("/tovalid") public void valid(String echostr,HttpServletResponse res) throws IOException{ PrintWriter out = res.getWriter(); out.print(echostr); } }
第二种
(1)
https://open.weixin.qq.com/connect/oauth3/authorize?appid=xxxxxxxx&redirect_uri=http:// 域名
/open/openid&response_type=code&scope=snsapi_userinfo&state=1&connect_redirect=1#wechat_redirect
package net.itraf.controller; import java.io.IOException; import java.io.PrintWriter; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import net.sf.json.JSONObject; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; @Controller @RequestMapping("/weixin") public class Oauth3Action { @RequestMapping("/oauth") public void auth(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String echostr = request.getParameter("echostr"); if(echostr==null){ String appId = "wx24d47d2080f54c5b"; String appSecret = "95011ac70909e8cca2786217dd80ee3f"; //拼接 String get_access_token_url = "https://api.weixin.qq.com/sns/oauth3/access_token?" + "appid=" + appId + "&secret=" + appSecret + "&code=CODE&grant_type=authorization_code"; String get_userinfo = "https://api.weixin.qq.com/sns/userinfo?access_token=ACCESS_TOKEN&openid=OPENID&lang=zh_CN"; request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); String code = request.getParameter("code"); System.out.println("******************code=" + code); get_access_token_url = get_access_token_url.replace("CODE", code); String json = HttpsGetUtil.doHttpsGetJson(get_access_token_url); JSONObject jsonObject = JSONObject.fromObject(json); String access_token = jsonObject.getString("access_token"); String openid = jsonObject.getString("openid"); get_userinfo = get_userinfo.replace("ACCESS_TOKEN", access_token); get_userinfo = get_userinfo.replace("OPENID", openid); String userInfoJson = HttpsGetUtil.doHttpsGetJson(get_userinfo); JSONObject userInfoJO = JSONObject.fromObject(userInfoJson); String user_openid = userInfoJO.getString("openid"); String user_nickname = userInfoJO.getString("nickname"); String user_sex = userInfoJO.getString("sex"); String user_province = userInfoJO.getString("province"); String user_city = userInfoJO.getString("city"); String user_country = userInfoJO.getString("country"); String user_headimgurl = userInfoJO.getString("headimgurl"); response.setContentType("text/html; charset=utf-8"); PrintWriter out = response.getWriter(); out.println(""); out.println(""); out.println("A Servlet "); out.println(" "); out.print(" This is "); out.print(this.getClass()); out.println(", using the POST method \n"); out.println("openid:" + user_openid + "\n\n"); out.println("nickname:" + user_nickname + "\n\n"); out.println("sex:" + user_sex + "\n\n"); out.println("province:" + user_province + "\n\n"); out.println("city:" + user_city + "\n\n"); out.println("country:" + user_country + "\n\n"); out.println(""); out.println(" "); out.println(""); out.flush(); out.close(); }else{ PrintWriter out = response.getWriter(); out.print(echostr); } } }
package net.itraf.controller; import java.io.IOException; import java.io.InputStream; import java.net.HttpURLConnection; import java.net.MalformedURLException; import java.net.URL; public class HttpsGetUtil { public static String doHttpsGetJson(String Url) { String message = ""; try { System.out.println("doHttpsGetJson");//TODO:dd URL urlGet = new URL(Url); HttpURLConnection http = (HttpURLConnection) urlGet.openConnection(); http.setRequestMethod("GET"); //必须是get方式请求 24 http.setRequestProperty("Content-Type","application/x-www-form-urlencoded"); http.setDoOutput(true); http.setDoInput(true); System.setProperty("sun.net.client.defaultConnectTimeout", "30000");//连接超时30秒28 System.setProperty("sun.net.client.defaultReadTimeout", "30000"); //读取超时30秒29 30 http.connect(); InputStream is =http.getInputStream(); int size =is.available(); byte[] jsonBytes =new byte[size]; is.read(jsonBytes); message=new String(jsonBytes,"UTF-8"); } catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return message; } }
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