[英]Jackson JsonNode Serialization
I'm using AWS Lambda with a Java 8 function. 我正在将AWS Lambda与Java 8函数一起使用。 Lambda has a builtin Jackson Serializer so when your method returns an object it serializes it to a JSON representation. Lambda具有内置的Jackson序列化器,因此当您的方法返回一个对象时,它将其序列化为JSON表示形式。
I have an onject that is made up of the following properties: 我有一个由以下属性组成的对象:
private String name;
private JsonNode model;
private JsonNode field;
I've omitted all the rest of the class for simplicity but it has getters / setters etc. 为了简单起见,我省略了所有其他类,但是它具有getters / setters等。
Normally when I run this in my native application it works perfectly. 通常,当我在本机应用程序中运行它时,它可以完美运行。 The JsonNode
Tree structure is rendered as a JSON. JsonNode
树结构呈现为JSON。 For example: 例如:
{
"name": "example",
"model": {
"key": "ipAddress",
"type": "input",
"templateOptions": {
"label": "IP",
"placeholder": "Something",
"description": "The IP address.",
"required": true
}
},
"field": {
"key": "pro",
"type": "input",
"templateOptions": {
"label": "Pro",
"placeholder": "Something",
"description": "Pro Example",
"required": false
}
}
}
However, for some unknown reason when I run this in Lambda the actual JsonNode object itself (not the tree but the wrapper object) is serialized. 但是,由于某种未知的原因,当我在Lambda中运行此代码时,实际的JsonNode对象本身(而不是树,而是包装对象)已被序列化。 So I'm getting this instead: 所以我得到这个代替:
{
"name": "example",
"model": {
"nodeType": "NULL",
"array": false,
"null": true,
"valueNode": true,
"containerNode": false,
"missingNode": false,
"object": false,
"pojo": false,
"number": false,
"integralNumber": false,
"floatingPointNumber": false,
"short": false,
"int": false,
"long": false,
"float": false,
"double": false,
"bigDecimal": false,
"bigInteger": false,
"textual": false,
"boolean": false,
"binary": false
},
"fields": {
"nodeType": "ARRAY",
"array": true,
"null": false,
"valueNode": false,
"containerNode": true,
"missingNode": false,
"object": false,
"pojo": false,
"number": false,
"integralNumber": false,
"floatingPointNumber": false,
"short": false,
"int": false,
"long": false,
"float": false,
"double": false,
"bigDecimal": false,
"bigInteger": false,
"textual": false,
"boolean": false,
"binary": false
},
"schedule": "0 0/1 * 1/1 * ? *"
}
Does anybody have any insight as to why this is happening and any suggestions for solutions / workarounds? 是否有人对此有何见解以及对解决方案/解决方法的任何建议?
UPDATE: 更新:
I'm specifically using a JsonNode because the model
and field
are dynamic and are provided at runtime. 我特别使用JsonNode,因为model
和field
是动态的,并且在运行时提供。 So I wont know the structure ahead of time. 所以我不会提前知道结构。
Provided that "model" and "field" will always be objects, and not arrays, you could use a Map<String, Object>
for them. 假设“模型”和“字段”始终是对象,而不是数组,则可以为它们使用Map<String, Object>
。 For child objects, simply add other maps as the value. 对于子对象,只需添加其他映射作为值。
private String name;
private Map<String, Object> model;
private Map<String, Object> field;
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