如何序列化Map< String，List< Object>>使用FlexJSON [英] How to serialize Map<String, List<Object>> with FlexJSON

问题描述

我有一个想要序列化为JSON的对象。此对象是包含特定对象列表的地图。这与它类似：

I have a object which I want to serialize to JSON. This object is a map with list of a specific objects. This looks similar to it:

Map<String, List<Object>> map = new Map<String, List<Object>>();

我正在使用FlexJSON。我只能使用 flexjson.JSONSerializer 。有我的尝试：

I am using FlexJSON. I can work only with flexjson.JSONSerializer. There are my tries:

JSONSerializer jsonSerializer = new JSONSerializer();
//        jsonSerializer.include("map");
//        jsonSerializer.include("map.myList.object");
jsonSerializer.transform(new MapTransformer(), "map");
jsonSerializer.exclude("*.class");

正如您所看到的，我正在尝试使用 Transformer 课程，但我没有成功。正如我想的那样，如果我的 List< Object> 具有自己的名称，例如 myList ，则注释行将起作用。但它没有自己的名字，因为我的地图是值。

As you can see I am trying now with Transformer classes but I haven't succeeded. The commented lines will work, as I suppose, if my List<Object> has own name for example myList. But it doesn't haven own name, because it is values of my map.

我如何序列化这样的使用FlexJSON反对JSON？

How can I serialize such object to JSON with FlexJSON?

推荐答案

Quoi是正确的，很可能是您想要使用的答案。但是，为了让您可以了解它的工作原理，您可以这样做：

Quoi is correct, and most likely the answer you want to use. However, just so you can learn more about how it works you could do this:

new JSONSerializer().include("values.values").serialize( myMap );

地图和列表是容器，包含其中包含的元素的特殊表达式。如果要讨论容器值的路径，请在路径中使用值表达式。 Map的两个特殊表达式keys和values。其他收藏集具有值。

Maps and Lists are containers and have special expressions for the elements contained within them. When you want to talk about the path of the values of a container you use "values" expression in the path. Map's two special expressions "keys" and "values". Other Collections have "values".

另一种选择是使用通配符，如下所示：

Another option is to use wildcards like so:

   new JSONSerializer().include("values.*").serialize( myMap );

您可以在Quoi的答案中看到用于排除类属性的通配符。

You can see wildcards used in Quoi's answer as well to exclude the class property.

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