Question

我有一个具有以下结构的JSON文件。

    [
   {
      "type":[
         "blog",
         "article",
         "pressrelease"
      ],
      "states":[
         "scheduled",
         "published"
      ],
      "roles":[
         "editor",
         "admin"
      ],
      "actions":[
         "review",
         "delete"
      ]
   },
   {
      "type":[
         "blog",
         "article",
         "pressrelease"
      ],
      "states":[
         "draft",
         "review"
      ],
      "roles":[
         "editor",
         "admin"
      ],
      "actions":[
         "submit",
         "delete"
      ]
   },
   {
      "type":[
         "blog",
         "article"
      ],
      "states":[
         "draft",
         "review"
      ],
      "roles":[
         "author"
      ],
      "actions":[
         "submit"
      ]
   },
   {
      "type":[
         "pressrelease"
      ],
      "states":[
         "draft",
         "review"
      ],
      "roles":[
         "pr",
         "prm"
      ],
      "actions":[
         "submit"
      ]
   },
   {
      "type":[
         "pressrelease"
      ],
      "states":[
         "scheduled",
         "published"
      ],
      "roles":[
         "prm"
      ],
      "actions":[
         "review",
         "delete"
      ]
   }
]

我需要编写一个方法，根据上面的json返回动作，例如。

getActions(type, state, role){
}

我计划使用GSON将json转换为Action类对象列表，然后使用key作为type.state.role构建一个静态映射，并通过使用少量for循环处理json来将值作为操作列表。我的地图将有

"blog.scheduled.editor" : ["review", "delete"]
"blog.scheduled.admin" : ["review", "delete"]
"blog.published.editor" : ["review", "delete"]

.....

"pressrelease.draft.pr" : ["submit"]

因此，在getActionas方法中，我可以通过从输入值创建键来轻松返回操作。

我不确定这是否是正确的实现，或者是否有实用工具。

Answer 1

你走在正确的轨道上，但我建议使用树而不是地图，因为这是这种数据的更自然的表现。

像这样构建你的树：

* [Root]
|___ blog
|   |___ published
|   |   |___ editor
|   |   |   |___ review
|   |   |   |___ delete
|   |   |
|   |   |___ admin
|   |   |   |___ review
|   |   |   |___ delete
|   |   |
|   |
|   |___ scheduled
|   |   |___ admin
|   |   |   |___ delete
|   |   |   |___ review
|   |   |
|   |   |___ editor
|   |   |   |___ review
|   |   |   |___ delete
|   |   |
|   |
|
|___ pressrelease
|   |___ scheduled
|   |   |___ admin
|   |   |   |___ delete
|   |   |   |___ review
(I spend far too much time on that ASCII tree ...)

然后你可以从节点到节点走三个“向下”并检查孩子们。

通过这种方式，您还可以检查博客条目上可能存在哪些状态（如果您以不同方式重新订购或创建树），您可以检查管理员可以对文章执行哪些操作。

在Java中将json字符串与数组转换为平键的最佳方法

1 个答案: