fix 5712 5714

@@ -37,7 +37,8 @@ let guardStep = function(step) {
             if (req.xhr) {
                 return res.json({
                     code: 400,
-                    refer: '/reg.html'
+                    refer: '/reg.html',
+                    message: '页面失效'
                 });
             } else {
                 return res.redirect('/reg.html');

@@ -13,6 +13,8 @@ const back = require(cRoot + '/back');
 const bind = require(cRoot + '/bind');
 const reg = require(cRoot + '/reg');
 
+const disableBFCahce = require('../../doraemon/middleware/disable-BFCache');
+
 const smsLogin = require(cRoot + '/sms');
 const update = require(cRoot + '/update');
 const agreement = require(cRoot + '/app-agreement');
@@ -21,7 +23,7 @@ const router = express.Router(); // eslint-disable-line
 
 // 兼容老的路由
 router.get('/signin.html', login.common.beforeLogin, login.local.loginPage);
-router.get('/reg.html', reg.index);
+router.get('/reg.html', disableBFCahce, reg.index);
 router.get('/login.html', login.common.beforeLogin, login.local.international);
 router.get('/phoneback.html', back.indexMobilePage);
 router.get('/emailback.html', back.indexEmailPage);
@@ -85,6 +87,7 @@ router.post('/passport/bind/changeMobile', bind.changeMobile);
 /**
  * 注册
  */
+router.use('/passport/reg/*', disableBFCahce);
 router.get('/passport/reg/index', reg.index);
 router.get('/passport/reg/captcha.png', reg.genCaptcha);
 router.post('/passport/reg/verifymobile', reg.sendCodeBusyBoy, reg.verifyMobile);

+/**
+ *  disable Back forward cache
+ */
+module.exports = (req, res, next) => {
+    res.set({
+        'Cache-Control': 'no-cache, max-age=0, must-revalidate, no-store',
+        Pragma: 'no-cache',
+        Expires: 0
+    });
+    next();
+};

@@ -41,6 +41,8 @@ module.exports = () => {
                 res.removeHeader('Expires');
             } else if (req.get('X-Requested-With') === 'XMLHttpRequest') {
                 res.set('Cache-Control', 'no-cache');
+            } else if (res.get('Cache-Control')) { // 业务代码里设了cache， 中断下面的判断
+                // nothing
             } else {
                 res.set({
                     'Cache-Control': 'no-cache',

@@ -68,9 +68,11 @@ module.exports = function(useInRegister, useForBind, useForRelate) {
                 if (data.code === 200) {
                     location.href = data.data;
                 } else {
-
                     // 验证码不正确，显示提示
                     showErrTip(data.message);
+                    if (data.refer) {
+                        location.href = data.refer;
+                    }
                 }
 
             }