pdm

estateagents.pdman.json

               "name": "img_id",
               "type": "Integer",
               "remark": "",
-              "chnname": "图片id"
+              "chnname": "图片id",
+              "pk": true,
+              "notNull": true,
+              "autoIncrement": true
             },
             {
               "name": "img_url",