java - com.fasterxml.jackson.databind.node.IntNode 无法转换为 com.fasterxml.jackson.databind.node.ObjectNode

Question

我正在尝试学习 DynamoDb 并尝试使用示例将数据从 json 加载到表中 Amazon developer guide但我遇到了以下异常:

com.fasterxml.jackson.databind.node.IntNode cannot be cast to com.fasterxml.jackson.databind.node.ObjectNode

在下面一行:

 currentNode = (ObjectNode) iter.next();

你能告诉我我在这里做错了什么吗？

您还可以告诉我有什么方法可以使用 GUI 来查看我的表格内容吗？我在项目中使用 DynamoDbLocal 使用 maven。

谢谢

Answer 1

我的 json 文件中存在问题。我在输入文件中使用 json，如下所示:

{ 
"year" : "2013",
"title" : "Turn It Down, Or Else!",
"info" : {
    "directors" : [
        "Alice Smith",
        "Bob Jones"
    ],
    "release_date" : "2013-01-18T00:00:00Z",
    "rating" : "6.2",
    "genres" : [
        "Comedy",
        "Drama"
    ],
    "image_url" : "http://ia.media-imdb.com/images/N/O9ERWAU7FS797AJ7LU8HN09AMUP908RLlo5JF90EWR7LJKQ7@@._V1_SX400_.jpg",
    "plot" : "A rock band plays their music at high volumes, annoying the neighbors.",
    "rank" : "11",
    "running_time_secs" : "5215",
    "actors" : [
        "David Matthewman",
        "Ann Thomas",
        "Jonathan G. Neff"
   ]
 }
}

虽然我的代码期望这样:

[
{  
"year" : "2013",
"title" : "Turn It Down, Or Else!",
"info" : {
    "directors" : [
        "Alice Smith",
        "Bob Jones"
    ],
    "release_date" : "2013-01-18T00:00:00Z",
    "rating" : "6.2",
    "genres" : [
        "Comedy",
        "Drama"
    ],
    "image_url" : "http://ia.media-imdb.com/images/N/O9ERWAU7FS797AJ7LU8HN09AMUP908RLlo5JF90EWR7LJKQ7@@._V1_SX400_.jpg",
    "plot" : "A rock band plays their music at high volumes, annoying the neighbors.",
    "rank" : "11",
    "running_time_secs" : "5215",
    "actors" : [
        "David Matthewman",
        "Ann Thomas",
        "Jonathan G. Neff"
   ]
  }
 }
]