catch error in middleware

@@ -9,7 +9,7 @@
 const cartModel = require('../models/cart');
 const _ = require('lodash');
 
-exports.index = (req, res) => {
+exports.index = (req, res, next) => {
     const shoppingKey = req.cookies._SPK || null;
     const uid = req.user.uid || null;
 
@@ -28,14 +28,12 @@ exports.index = (req, res) => {
             // code 500
             res.send(result);
         }
-    }).catch((err) => {
-        res.send(err);
-    });
+    }).catch(next);
 };
 
 
 // 修改数量
-exports.changeProductNum = (req, res) => {
+exports.changeProductNum = (req, res, next) => {
     const changeType = req.body.changeType;
 
     // const changeTo = req.body.changeTo;
@@ -52,7 +50,7 @@ exports.changeProductNum = (req, res) => {
             sku,
             goodTpye
         }).then(result => {
-            console.log('changeProductNum-INCREASE-result:', result);
+            //console.log('changeProductNum-INCREASE-result:', result);
             if (result.code === 200) {
                 cartModel.getCartData(shoppingKey, uid).then(cartData => {
                     res.json(_.merge(
@@ -63,7 +61,7 @@ exports.changeProductNum = (req, res) => {
             } else {
                 res.json(result);
             }
-        });
+        }).catch(next);
 
     } else if (changeType === 'DECREASE') {
         cartModel.modifyProductNum({
@@ -73,7 +71,7 @@ exports.changeProductNum = (req, res) => {
             sku,
             goodTpye
         }).then(result => {
-            console.log('changeProductNum-DECREASE-result:', JSON.stringify(result));
+            //console.log('changeProductNum-DECREASE-result:', JSON.stringify(result));
             if (result.code === 200) {
                 cartModel.getCartData(shoppingKey, uid).then(cartData => {
                     res.json(_.merge(
@@ -84,12 +82,12 @@ exports.changeProductNum = (req, res) => {
             } else {
                 res.json(result);
             }
-        });
+        }).catch(next);
     }
 };
 
 // 删除商品
-exports.removeProduct = (req, res) => {
+exports.removeProduct = (req, res, next) => {
     const params = {};
     const uid = req.user.uid;
     const shoppingKey = req.cookies._SPK;
@@ -107,16 +105,16 @@ exports.removeProduct = (req, res) => {
         _.merge(params, {product_sku_list: productSkuList});
     }
 
-    console.log('remove---params:', params);
+    //console.log('remove---params:', params);
 
     cartModel.removeGoods(params).then(result => {
-        console.log('remove-result:', result);
+        //console.log('remove-result:', result);
         res.json(_.merge(cartModel.filterCartData(result, uid), {code: result.code, message: result.message}));
-    });
+    }).catch(next);
 };
 
 // 收藏商品
-exports.sendToFavorite = (req, res) => {
+exports.sendToFavorite = (req, res, next) => {
     const params = {};
     const uid = req.user.uid;
     const productSkuList = req.body.skuList;
@@ -134,7 +132,7 @@ exports.sendToFavorite = (req, res) => {
     cartModel.transferToFavorite(params).then(result => {
         console.log('transferToFavorite-result:', result);
         res.json(_.merge(cartModel.filterCartData(result, uid), {code: result.code, message: result.message}));
-    });
+    }).catch(next);
 };
 
 // 编辑商品颜色和尺寸
@@ -158,7 +156,7 @@ exports.editProduct = (req, res) => {
 };
 
 // 添加商品到购物车
-exports.addToCart = (req, res) => {
+exports.addToCart = (req, res, next) => {
     const productSku = req.body.productSku;
     const buyNumber = req.body.buyNumber;
 
@@ -170,11 +168,11 @@ exports.addToCart = (req, res) => {
     }).then((result) => {
         res.cookie('_SPK', result.data.shopping_key, { maxAge: 1000 * 60 * 60 * 24 * 365, httpOnly: true, path: '/'});
         res.json(result);
-    });
+    }).catch(next);
 };
 
 // 购物车商品选择与取消选择
-exports.toggleSelectGoods = (req, res) => {
+exports.toggleSelectGoods = (req, res, next) => {
     const params = {};
     const uid = req.user.uid;
     const shoppingKey = req.cookies._SPK;
@@ -201,23 +199,23 @@ exports.toggleSelectGoods = (req, res) => {
 
     cartModel.toggleSelectGoods(params).then(result => {
         res.json(_.merge(cartModel.filterCartData(result, uid), {code: result.code, message: result.message}));
-    });
+    }).catch(next);
 };
 
 
 // 去结算检查库存
-exports.checkStorage = (req, res) => {
+exports.checkStorage = (req, res, next) => {
     const shoppingKey = req.cookies._SPK || null;
     const uid = req.user.uid || null;
 
     cartModel.getCartData(shoppingKey, uid).then((result) => {
         // console.log('Cart current Data:', JSON.stringify(result, '', 4))
         res.json(_.merge(cartModel.filterCartData(result, uid), {code: result.code, message: result.message}));
-    });
+    }).catch(next);
 };
 
 // 修改购物车商品颜色和尺寸
-exports.modifyProduct = (req, res) => {
+exports.modifyProduct = (req, res, next) => {
     const uid = req.user && req.user.uid;
     const shoppingKey = req.cookies._SPK;
 
@@ -238,7 +236,7 @@ exports.modifyProduct = (req, res) => {
         } else {
             res.json(result);
         }
-    });
+    }).catch(next);
 };