BIRT如何使用rest api接口获取json做报表

[

    {

        "id": 1000,

        "content": "It is too hot",

        "comment": [

            {

                "author": "joe",

                "score": 3,

                "comment": "just so so!"

            },

            {

                "author": "jimmy",

                "score": 5,

                "comment": "cool! Good!"

            }

        ]

}

...

]

...

importPackage(Packages.java.io);

importPackage(Packages.java.net);

var param= params["industryname"].value;

var inStream = new URL("Http://yourapi/endpoint/" + param).openStream();

var inStreamReader = new InputStreamReader(inStream);

var bufferedReader = new BufferedReader(inStreamReader);

var line;

var result = "";

while ((line = bufferedReader.readLine()) != null)

result += line;

inStream.close();

var json = JSON.parse(result);

vars["htmlJSON"] = json;

logger.warning (result);

...

A