java实现QQ互联登录

准备工作

1.云服务器

2.备案的域名

3.本地调试需要修改hosts文件，将域名映射到127.0.0.1

一、申请QQ互联，并成为开发者
QQ互联：https://connect.qq.com/index.html

登录后，点击头像，进入认证页面，填写信息，等待审核。

审核通过后，点击创建应用

审核通过后，就可以使用APP ID 和 APP Key

二、编写java代码

项目结构

yml配置

server:port: 80qq:oauth:http: //QQ互联中填写的网站地址

导入pom依赖

<!--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;/*** 发起请求* @param session* @return*/@GetMapping("/qq/oauth")public String qq(HttpSession session){//QQ互联中的回调地址String backUrl = http + "/qq/callback";//用于第三方应用防止CSRF攻击String uuid = UUID.randomUUID().toString().replaceAll("-","");session.setAttribute("state",uuid);//Step1：获取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回调* @param request* @return*/@GetMapping("/qq/callback")public String qqcallback(HttpServletRequest request) throws Exception {HttpSession session = request.getSession();String 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错误");}}//Step2：通过Authorization Code获取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: 获取回调后的 openid 值url = "https://graph.qq.com/oauth2.0/me?access_token=" + access_token;String openid = QQHttpClient.getOpenID(url);//Step4：获取QQ用户信息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,用来唯一标识qq用户session.setAttribute("nickname",(String)jsonObject.get("nickname")); //QQ名session.setAttribute("figureurl_qq_2",(String)jsonObject.get("figureurl_qq_2")); //大小为100*100像素的QQ头像URLreturn "redirect:/home";}}

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";}
}

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工具类（主要用于解析QQ返回的信息）*/
public class QQHttpClient {//QQ互联中提供的 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);}public 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;}public 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;}}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;}
}

index.html

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head><meta charset="UTF-8"><title>登录页</title>
</head>
<body>
<a href="/qq/oauth">QQ授权登录</a>
</body>
</html>

home.html

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

效果图

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