準備工作

1.云服務器

2.備案的域名

3.本地調試需要修改hosts文件，將域名映射到127.0.0.1

一、申請QQ互聯，并成為開發者

QQ互聯：https://connect.qq.com/index.html

登錄后，點擊頭像，進入認證頁面，填寫信息，等待審核。

?審核通過后，點擊創建應用

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審核通過后，就可以使用APP ID 和 APP Key

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二、編寫java代碼

github:https://github.com/sansheng741/QQLogin

項目結構

yml配置

server:port: 80qq:oauth:http: //QQ互聯中填寫的網站地址

導入pom依賴

<!--httpclient--> <dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpclient</artifactId><version>4.5.6</version> </dependency> <!--阿里 JSON--> <dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.2.47</version> </dependency>

QQController

package com.ck.blog.controller;import com.alibaba.fastjson.JSONObject; import com.ck.blog.exception.StateErrorException; import com.ck.blog.utils.QQHttpClient; import org.springframework.beans.factory.annotation.Value; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.GetMapping;import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpSession; import java.net.URLEncoder; import java.util.UUID;/*** @author ck* @create 2019-05-18 20:32*/ @Controller public class QQController {@Value("${qq.oauth.http}")private String http;/*** 發起請求* @param session* @return*/@GetMapping("/qq/oauth")public String qq(HttpSession session){//QQ互聯中的回調地址String backUrl = http + "/qq/callback";//用于第三方應用防止CSRF攻擊String uuid = UUID.randomUUID().toString().replaceAll("-","");session.setAttribute("state",uuid);//Step1：獲取Authorization CodeString url = "https://graph.qq.com/oauth2.0/authorize?response_type=code"+"&client_id=" + QQHttpClient.APPID +"&redirect_uri=" + URLEncoder.encode(backUrl) +"&state=" + uuid;return "redirect:" + url;}/*** QQ回調* @param request* @return*/@GetMapping("/qq/callback")public String qqcallback(HttpServletRequest request) throws Exception {HttpSession session = request.getSession();//qq返回的信息：http://graph.qq.com/demo/index.jsp?code=9A5F************************06AF&state=testString code = request.getParameter("code");String state = request.getParameter("state");String uuid = (String) session.getAttribute("state");if(uuid != null){if(!uuid.equals(state)){throw new StateErrorException("QQ,state錯誤");}}//Step2：通過Authorization Code獲取Access TokenString backUrl = http + "/qq/callback";String url = "https://graph.qq.com/oauth2.0/token?grant_type=authorization_code"+"&client_id=" + QQHttpClient.APPID +"&client_secret=" + QQHttpClient.APPKEY +"&code=" + code +"&redirect_uri=" + backUrl;String access_token = QQHttpClient.getAccessToken(url);//Step3: 獲取回調后的 openid 值url = "https://graph.qq.com/oauth2.0/me?access_token=" + access_token;String openid = QQHttpClient.getOpenID(url);//Step4：獲取QQ用戶信息url = "https://graph.qq.com/user/get_user_info?access_token=" + access_token +"&oauth_consumer_key="+ QQHttpClient.APPID +"&openid=" + openid;JSONObject jsonObject = QQHttpClient.getUserInfo(url);//也可以放到Redis和mysql中session.setAttribute("openid",openid); //openid,用來唯一標識qq用戶session.setAttribute("nickname",(String)jsonObject.get("nickname")); //QQ名session.setAttribute("figureurl_qq_2",(String)jsonObject.get("figureurl_qq_2")); //大小為100*100像素的QQ頭像URLreturn "redirect:/home";}}

?QQHttpClient?

package com.ck.blog.utils;import com.alibaba.fastjson.JSONObject; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.client.methods.HttpGet; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClients; import org.apache.http.util.EntityUtils;import java.io.IOException;/*** @author ck* @create 2019-05-18 20:32* QQ工具類（主要用于解析QQ返回的信息）*/ public class QQHttpClient {//QQ互聯中提供的 appid 和 appkeypublic static final String APPID = "xxxxxxxx";public static final String APPKEY = "xxxxxxxxxx";private static JSONObject parseJSONP(String jsonp){int startIndex = jsonp.indexOf("(");int endIndex = jsonp.lastIndexOf(")");String json = jsonp.substring(startIndex + 1,endIndex);return JSONObject.parseObject(json);}//qq返回信息：access_token=FE04************************CCE2&expires_in=7776000&refresh_token=88E4************************BE14public static String getAccessToken(String url) throws IOException {CloseableHttpClient client = HttpClients.createDefault();String token = null;HttpGet httpGet = new HttpGet(url);HttpResponse response = client.execute(httpGet);HttpEntity entity = response.getEntity();if(entity != null){String result = EntityUtils.toString(entity,"UTF-8");if(result.indexOf("access_token") >= 0){String[] array = result.split("&");for (String str : array){if(str.indexOf("access_token") >= 0){token = str.substring(str.indexOf("=") + 1);break;}}}}httpGet.releaseConnection();return token;}//qq返回信息：callback( {"client_id":"YOUR_APPID","openid":"YOUR_OPENID"} ); 需要用到上面自己定義的解析方法parseJSONPpublic static String getOpenID(String url) throws IOException {JSONObject jsonObject = null;CloseableHttpClient client = HttpClients.createDefault();HttpGet httpGet = new HttpGet(url);HttpResponse response = client.execute(httpGet);HttpEntity entity = response.getEntity();if(entity != null){String result = EntityUtils.toString(entity,"UTF-8");jsonObject = parseJSONP(result);}httpGet.releaseConnection();if(jsonObject != null){return jsonObject.getString("openid");}else {return null;}}//qq返回信息：{ "ret":0, "msg":"", "nickname":"YOUR_NICK_NAME", ... }，為JSON格式，直接使用JSONObject對象解析public static JSONObject getUserInfo(String url) throws IOException {JSONObject jsonObject = null;CloseableHttpClient client = HttpClients.createDefault();HttpGet httpGet = new HttpGet(url);HttpResponse response = client.execute(httpGet);HttpEntity entity = response.getEntity();if(entity != null){String result = EntityUtils.toString(entity,"UTF-8");jsonObject = JSONObject.parseObject(result);}httpGet.releaseConnection();return jsonObject;} }

IndexController?

package com.ck.blog.controller;import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.GetMapping;import javax.servlet.http.HttpSession;/*** @author ck* @create 2019-05-18 20:31*/ @Controller public class IndexController {@GetMapping("/index")public String index(){return "index";}@GetMapping("/home")public String home(HttpSession session, Model model){String openid = (String) session.getAttribute("openid");String nickname = (String) session.getAttribute("nickname");String figureurl_qq_2 = (String) session.getAttribute("figureurl_qq_2");model.addAttribute("openid",openid);model.addAttribute("nickname",nickname);model.addAttribute("figureurl_qq_2",figureurl_qq_2);return "home";} }

index.html

<!DOCTYPE html> <html lang="en" xmlns:th="http://www.thymeleaf.org"> <head><meta charset="UTF-8"><title>登錄頁</title> </head> <body> <a href="/qq/oauth">QQ授權登錄</a> </body> </html>

home.html

<!DOCTYPE html> <html lang="en" xmlns:th="http://www.thymeleaf.org"> <head><meta charset="UTF-8"><title>QQ授權成功</title> </head> <body> <div>openid:[[${openid}]] </div> <div>nickName:[[${nickname}]] </div> <div><img th:src="${figureurl_qq_2}"> </div> </body> </html>

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?效果圖

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總結

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