怎么把Java Pojo转换成Nashorn Json? [英] How to convert Java Pojo to Nashorn Json?

问题描述

我有一个Java对象，我想将其转换为json对象并传递给Nashorn javascript引擎.谷歌为此很难找到答案！有人可以告诉我该怎么做吗?

I have a Java object that I want to turn into a json object and pass to the Nashorn javascript engine. It is surprisingly difficult to google an answer for this! Can someone tell me how to do it?

我尝试过:

ObjectMapper mapper = new ObjectMapper();
String inputModelAsString = mapper.writeValueAsString(inputModel);

然后将字符串json传递给函数:

And then passing the string json to the function:

result = invocable.invokeFunction(PROGRAM_FUNCTION, moduleName, inputModelAsString);

但是它是作为字符串而不是作为json传递的.

But it was passed as a string, not as a json.

推荐答案

您可以通过

ScriptEngine engine = new ScriptEngineManager().getEngineByName("nashorn");
ScriptObjectMirror json = (ScriptObjectMirror) engine.eval("("+inputModelAsString+")");

然后您可以在代码中传递json对象

Then you can pass the json object in you code

result = invocable.invokeFunction(PROGRAM_FUNCTION, moduleName, json);

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