通过微信公众号获取用户信息(java版)
最近由于公司业务,就开始研究微信开发的流程,说实话,这东西刚开始看到时候和看天书的一样,总算,看了一天的文档,测试代码终于出来了。
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,测试号必须关注微信公众号,正式的不用,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/oauth2/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)
1 package net.itraf.controller; 2 3 import java.io.IOException; 4 import java.io.InputStream; 5 import java.io.PrintWriter; 6 import java.net.HttpURLConnection; 7 import java.net.MalformedURLException; 8 import java.net.URL; 9 10 import javax.servlet.http.HttpServletResponse; 11 12 import org.springframework.stereotype.Controller; 13 import org.springframework.web.bind.annotation.RequestMapping; 14 import org.springframework.web.bind.annotation.ResponseBody; 15 16 import com.alibaba.fastjson.JSONObject; 17 18 @Controller 19 @RequestMapping("/open") 20 public class OpenController { 21 @RequestMapping("/toOpenId") 22 public @ResponseBody String getOpenId(String code,String echostr,HttpServletResponse res) throws IOException{ 23 if(echostr==null){ 24 String url="https://api.weixin.qq.com/sns/oauth2/access_token?appid=wx24d47d2080f54c5b&secret=95011ac70909e8cca2786217dd80ee3f&code="+code+"&grant_type=authorization_code"; 25 System.out.println(code); 26 String openId=""; 27 try { 28 URL getUrl=new URL(url); 29 HttpURLConnection http=(HttpURLConnection)getUrl.openConnection(); 30 http.setRequestMethod("GET"); 31 http.setRequestProperty("Content-Type","application/x-www-form-urlencoded"); 32 http.setDoOutput(true); 33 http.setDoInput(true); 34 35 36 http.connect(); 37 InputStream is = http.getInputStream(); 38 int size = is.available(); 39 byte[] b = new byte[size]; 40 is.read(b); 41 42 43 String message = new String(b, "UTF-8"); 44 45 JSONObject json = JSONObject.parseObject(message); 46 openId = json.getString("openid"); 47 } catch (MalformedURLException e) { 48 e.printStackTrace(); 49 } catch (IOException e) { 50 e.printStackTrace(); 51 } 52 return openId; 53 }else{ 54 PrintWriter out = res.getWriter(); 55 out.print(echostr); 56 return null; 57 } 58 } 59 //做服务器校验 60 @RequestMapping("/tovalid") 61 public void valid(String echostr,HttpServletResponse res) throws IOException{ 62 PrintWriter out = res.getWriter(); 63 out.print(echostr); 64 } 65 }
第二种
(1)https://open.weixin.qq.com/connect/oauth2/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 Oauth2Action { @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/oauth2/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("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">"); out.println("<HTML>"); out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>"); out.println(" <BODY>"); 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("<img src=/" + user_headimgurl + "/"); out.println(">"); out.println(" </BODY>"); out.println("</HTML>"); out.flush(); out.close(); }else{ PrintWriter out = response.getWriter(); out.print(echostr); } } }
1 package net.itraf.controller; 2 3 import java.io.IOException; 4 import java.io.InputStream; 5 import java.net.HttpURLConnection; 6 import java.net.MalformedURLException; 7 import java.net.URL; 8 9 public class HttpsGetUtil { 10 public static String doHttpsGetJson(String Url) 11 { 12 String message = ""; 13 try 14 { 15 System.out.println("doHttpsGetJson");//TODO:dd 16 URL urlGet = new URL(Url); 17 HttpURLConnection http = (HttpURLConnection) urlGet.openConnection(); 18 http.setRequestMethod("GET"); //必须是get方式请求 24 19 http.setRequestProperty("Content-Type","application/x-www-form-urlencoded"); 20 http.setDoOutput(true); 21 http.setDoInput(true); 22 System.setProperty("sun.net.client.defaultConnectTimeout", "30000");//连接超时30秒28 23 System.setProperty("sun.net.client.defaultReadTimeout", "30000"); //读取超时30秒29 30 24 http.connect(); 25 InputStream is =http.getInputStream(); 26 int size =is.available(); 27 byte[] jsonBytes =new byte[size]; 28 is.read(jsonBytes); 29 message=new String(jsonBytes,"UTF-8"); 30 } 31 catch (MalformedURLException e) 32 { 33 e.printStackTrace(); 34 } 35 catch (IOException e) 36 { 37 e.printStackTrace(); 38 } 39 return message; 40 } 41 }
到此,两种方式都介绍完了,拿到用户信息后那就是你自己的事了。。。。。。