迭代Angular JS Controller中的复杂JSON数组并显示特定值

{
   "products":[
      {
         "recommendation":{
            "currentLevel":79,
            "maxLevel":100
         },
         "items":[
            {
               "id":"10600",
               "title":"Hampton Cookset - 8 Piece",
               "category":"STAINLESS STEEL",
               "imageUrl": "https://localhost/img/001.jpg",
               "unitsInCartons": 10,
               "unitCost":4.52,
               "packSize":10,
               "secondaryCategory":"Chairs"
            }
         ]
      },
      {
         "recommendation":{  
            "currentLevel":79,
            "maxLevel":100
         },
         "items":[  
            {  
               "id":"10870",
               "title":"MELAMINE BOWL",
               "category":"BOWLS",
               "imageUrl":"https://localhost/img/001.jpg",
               "unitsInCartons":6,
               "unitCost":0.93,
               "packSize":5,
               "secondaryCategory":"Kids Home"
            },
            {  
               "id":"10820",
               "title":"PP YUM YUM CUP",
               "category":"CUPS/MUGS",
               "imageUrl":"https://localhost/img/002.jpg",
               "unitsInCartons":12,
               "unitCost":0.7,
               "packSize":25,
               "secondaryCategory":"Kids Home"
            }
         ]
      }
   ]
}
{
   "products":[
      {
         "recommendat