用JsonSlurper读取扁平JSON

Question

尝试读取和转换输入文件具有以下内容的JSON文件：

{
  "id": “A9”,
  "roles": [
  {"title": “A”, “type”: “alpha” },
  {"title": “B”, “type”: “beta” },
  ]
},

{
  "id": “A10”,
  "roles": [
  {"title": “D”, “type”: “delta” },
  ]
}, 

但是，需要对一个库进行转换，该库要求相同级别的值：

{
  "roles": [
  {"id": “A9”, "title": “A”, “type”: “alpha” },
  {"id": “A9”, "title": “B”, “type”: “beta” },
  ]
},

{
  "roles": [
  {"id": “A10”, "title": “D”, “type”: “delta” },
  ]
}, 

我能够用JsonSlurper读取输入，但仍然坚持如何去修饰它。

Answer 1

使用这个data.json (注意，我必须清除后面的逗号，因为Groovy的JSON解析器将不接受它们)：

{
  "records":[{
    "id": "A9",
    "roles": [
      {"title": "A", "type": "alpha" },
      {"title": "B", "type": "beta" }
    ]
  },
  {
    "id": "A10",
    "roles": [
      {"title": "D", "type": "delta" }
    ]
  }]
}

你可以这样做：

def parsed = new groovy.json.JsonSlurper().parse(new File("data.json"))
def records = parsed.records
records.each { record ->
  record.roles.each { role ->
    role.id = record.id
  }
  record.remove('id')
}