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./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 .HttpURLConnection; 7 import .MalformedURLException; 8 import .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 @Controller19 @RequestMapping("/open")20 public class OpenController {21@RequestMapping("/toOpenId")22public @ResponseBody String getOpenId(String code,String echostr,HttpServletResponse res) throws IOException{23 if(echostr==null){24 String url="https://api./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);343536 http.connect();37 InputStream is = http.getInputStream(); 38 int size = is.available(); 39 byte[] b = new byte[size];40 is.read(b);414243 String message = new String(b, "UTF-8");4445 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")61public 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./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./sns/oauth2/access_token?"+ "appid="+ appId+ "&secret="+ appSecret+ "&code=CODE&grant_type=authorization_code";String get_userinfo = "https://api./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 .HttpURLConnection; 6 import .MalformedURLException; 7 import .URL; 8 9 public class HttpsGetUtil {10public static String doHttpsGetJson(String Url)11{12 String message = "";13 try14 {15 System.out.println("doHttpsGetJson");//TODO:dd16 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(".client.defaultConnectTimeout", "30000");//连接超时30秒2823 System.setProperty(".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 {33e.printStackTrace();34 }35 catch (IOException e)36 {37e.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。。。。。。
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