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<a  class="qq" href="<%=path%>/qqLogin"><img alt="QQ登录" title="QQ登录" src="img/QQ.png"></a>

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/**

     * QQ登录

     */

    @RequestMapping("/qqLogin")

    public void qqLogin(HttpServletRequest request, HttpServletResponse response) {

        try {

            response.setContentType("text/html;charset=utf-8");

            response.sendRedirect(new Oauth().getAuthorizeURL(request));

        } catch (QQConnectException e) {

            e.printStackTrace();

        } catch (IOException e) {

            e.printStackTrace();

        }

    }

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/**

     * 登录回调

     */

    @RequestMapping("回调路由")

    public String qqCallBack(HttpSession session, HttpServletRequest request, HttpServletResponse response) {

        response.setContentType("text/html;charset=utf-8");

        try {

            AccessToken accessTokenObj = (new Oauth()).getAccessTokenByRequest(request);

            String accessToken = null, openID = null;

            long tokenExpireIn = 0L;

            if (accessTokenObj.getAccessToken().equals("")) {

                return "404";

            }

            accessToken = accessTokenObj.getAccessToken();

            tokenExpireIn = accessTokenObj.getExpireIn();

            // 利用获取到的accessToken 去获取当前用的openid

            OpenID openIDObj = new OpenID(accessToken);

            openID = openIDObj.getUserOpenID();

            String icon = null, nickName = null, sex = null;

            // 去获取用户在Qzone的昵称等信息

            com.qq.connect.api.qzone.UserInfo qzoneUserInfo =

                new com.qq.connect.api.qzone.UserInfo(accessToken, openID);

            UserInfoBean userInfoBean = qzoneUserInfo.getUserInfo();

            if (userInfoBean.getRet() == 0) {

                nickName = userInfoBean.getNickname();

                sex = userInfoBean.getGender();

                if (userInfoBean.getAvatar().getAvatarURL100() == null) {

                    icon = userInfoBean.getAvatar().getAvatarURL50();

                }

                icon = userInfoBean.getAvatar().getAvatarURL100();

                // userInfoBean.getAvatar().getAvatarURL50();

                // userInfoBean.getAvatar().getAvatarURL100();

            }

            // 自己网站的用户实体类，根据openId查询是否已存在

            UserInfo userInfo = new UserInfo();

            userInfo.setOpenId(openID);

            UserInfo localUser = userInfoService.selectByOpenId(userInfo);

            if (localUser != null) {

                // 老用户处理

                //你需要的业务操作

            } else {

                // 新用户处理

                UserInfo userInfos = new UserInfo();

                userInfos.setUserId(Tools.getUniqueId());

                userInfos.setUserName(nickName);

                userInfos.setSex(sex);

                userInfoService.save(userInfos);

                //你需要的业务操作

            }

        } catch (QQConnectException e) {

            e.printStackTrace();

        }

        return "redirect:/index";

    }