JAVA实现QQ第三方登录

首先在QQ互联： https://connect.qq.com/manage.html 申请账号，并且进行资料审核，同时创建应用（设置回调地址）

申请应用完后，会有app_ID、app_KEY等参数

官方JAVA SDK demo下载：https://pan.xunlew.com/s86815

官方文档：https://wiki.connect.qq.com/%E5%87%86%E5%A4%87%E5%B7%A5%E4%BD%9C_oauth2-0

引入jar包 Sdk4J.jar

或者maven

<dependency>
            <groupId>net.gplatform</groupId>
            <artifactId>Sdk4J</artifactId>
            <version>2.0</version>
        </dependency>

把qqconnectconfig.properties 放在项目资源目录下

配置三个参数

点击QQ跳转第三方请求后台代码（官方demo代码）

/**
    * 第三方登录 授权
    *
    * @return
    */
   @RequestMapping(value = "/to_qq")
   public void toLogin(HttpServletRequest request, HttpServletResponse response) {
       response.setContentType("text/html;charset=utf-8");
       try {
           response.sendRedirect(new Oauth().getAuthorizeURL(request));
       } catch (Exception e) {
           e.printStackTrace();
       }
   }

回调地址代码（官方demo代码）

@RequestMapping(value = "/to_third_login/callback")
    public void loginBack(HttpServletRequest request, HttpServletResponse response) {
        response.setContentType("text/html; charset=utf-8");
 
 
        try {
            PrintWriter out = response.getWriter();
            AccessToken accessTokenObj = (new Oauth()).getAccessTokenByRequest(request);
 
            String accessToken = null,
                    openID = null;
            long tokenExpireIn = 0L;
 
 
            if (accessTokenObj.getAccessToken().equals("")) {
//                我们的网站被CSRF攻击了或者用户取消了授权
//                做一些数据统计工作
                System.out.print("没有获取到响应参数");
            } else {
                accessToken = accessTokenObj.getAccessToken();
                tokenExpireIn = accessTokenObj.getExpireIn();
 
                request.getSession().setAttribute("demo_access_token", accessToken);
                request.getSession().setAttribute("demo_token_expirein", String.valueOf(tokenExpireIn));
 
                // 利用获取到的accessToken 去获取当前用的openid -------- start
                OpenID openIDObj = new OpenID(accessToken);
                openID = openIDObj.getUserOpenID();
 
                out.println("欢迎你，代号为 " + openID + " 的用户!");
                request.getSession().setAttribute("demo_openid", openID);
                out.println("<a href=" + "/shuoshuoDemo.html" + " target=\"_blank\">去看看发表说说的demo吧</a>");
                // 利用获取到的accessToken 去获取当前用户的openid --------- end
 
 
                out.println("<p> start -----------------------------------利用获取到的accessToken,openid 去获取用户在Qzone的昵称等信息 ---------------------------- start </p>");
                UserInfo qzoneUserInfo = new UserInfo(accessToken, openID);
                UserInfoBean userInfoBean = qzoneUserInfo.getUserInfo();
                out.println("<br/>");
                if (userInfoBean.getRet() == 0) {
                    out.println(userInfoBean.getNickname() + "<br/>");
                    out.println(userInfoBean.getGender() + "<br/>");
                    out.println("<image src=" + userInfoBean.getAvatar().getAvatarURL30() + "/><br/>");
                    out.println("<image src=" + userInfoBean.getAvatar().getAvatarURL50() + "/><br/>");
                    out.println("<image src=" + userInfoBean.getAvatar().getAvatarURL100() + "/><br/>");
                } else {
                    out.println("很抱歉，我们没能正确获取到您的信息，原因是： " + userInfoBean.getMsg());
                }
                out.println("<p> end -----------------------------------利用获取到的accessToken,openid 去获取用户在Qzone的昵称等信息 ---------------------------- end </p>");
 
 
            }
        } catch (Exception e) {
        }
    }