我可以在运行时通过JSON动态创建Java对象吗? [英] Can I dynamically create a Java object in the run time via JSON?

问题描述

例如，我具有这样的JSON格式:

For example, I have a JSON format like this:

{"class":"MySpecialClass"，"attri1":"value1"，"attri2":"value2"}

{"class":"MySpecialClass", "attri1":"value1", "attri2":"value2"}

我想创建一个对象，它是一个MySpecialClass对象，并获得两个值为value1和value2的属性attri1和attri2.

I would like to create a Object, which is a MySpecialClass Object, and get two attribute, attri1 and attri2 with the value of value1 and value2.

这是要求:

1. 我有一个名为MySpecialClass的类文件，并且具有attri1和attri2，我可以创建该对象并在其中分配值吗?

1. I have a class file, named, MySpecialClass, and have attri1, and attri2, can I create this object, and assign the value in this?

我DONT'T有类文件MySpecialClass，我想在运行时生成它，这有可能吗?谢谢.

I DONT'T have the class file MySpecialClass, I would like to generate it on the runtime, is this possible to do so? Thanks.

推荐答案

使用任何Java/JSON解析器，第一种情况都是完全可行的.

Your first case is perfectly feasible using any Java/JSON parser.

您的第二种情况是可能的，但要努力.

Your second case is possible, but hard work.

您可以在运行时使用 bytecode engineering 构造类-例如使用 Apache BCEL .请注意，JSON仅包含字段，而不包含行为或类型.

You can construct classes at runtime using bytecode engineering - e.g. using Apache BCEL. Note that the JSON will contail fields only, and not behaviour nor type.

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