在 Java 类中工作时，使用 JSON 的脚本化数据源无法与 BIRT 一起使用

Question

我将用几句话来谈论抛出代码行，在露天，我需要使用其以 JSON 形式响应的工作流程 API 创建一个报告，我在此链接中找到了使用 JSON 作为数据源的解决方案（这将是完整的参考）了解我的问题）：

http://www.birt-exchange.org/org/devshare/designing-birt-reports/1053-scripted-data-source-using-json/

我下载了源代码，然后我了解它是如何工作的，最后我遇到了一个问题“身份验证问题”并通过编辑源文件“JSONParser.java”解决了它，无论如何我现在还有另一个问题，我在 Java 中有以下代码可以工作：

package com.actuate.json.test;
import java.io.IOException;
import com.actuate.json.JSONParser;
public class TestJSONParse_OutBound {
    public static void main(String[] args) {
        try{
            JSONParser theParser = new JSONParser();
            theParser.loadData("http://localhost:8080/alfresco/service/api/workflow-definitions/activiti$CS-Outbound-WFPD:5:403/workflow-instances?state=active&format=json","admin","admin");
            System.out.println("Number of jobs found: " + theParser.getChildCount("data") + "\n");
            for(int i = 0; i < theParser.getChildCount("data"); i++){
                System.out.println(String.valueOf(i + 1) + ")  " + theParser.getValue("data", "description", i));
                System.out.println("\tID: " + theParser.getValue("data", "id", i));
                System.out.println("\tURL: " + theParser.getValue("data", "url", i));
                System.out.println("\tUsername: " + theParser.getValue("data", "initiator/firstName", i));
            }
        }catch (IOException ioe) {
            // TODO: handle exception
        }catch(Exception ex){

        }
    }
}

结果：

Number of jobs found: 2

1)  CS-Outbound-WFPD
    ID: activiti$499
    URL: api/workflow-instances/activiti$499
    Username: Administrator
2)  CS-Outbound-WFPD
    ID: activiti$404
    URL: api/workflow-instances/activiti$404
    Username: Administrator

---

但在 Eclipse IDE 的 BIRT 报告中，运气不佳 1，在脚本数据源中，我输入：

count = 0;
controller = new Packages.com.actuate.json.JSONParser();
controller.loadData(params["JSONURL"],params["USERNAME"],params["PASSWORD"]);
totalCount = controller.getChildCount("data");

并在数据集表中获取行，例如：

if(count < totalCount){
    row["id"] = controller.getValue("data", "id", count);
    row["url"] = controller.getValue("data", "url", count);

    count++;
    return true;
}
return false

但仍然给我只有标题标题的白页，空单元格!!。

为了获得例外，我将其上传到与 BIRT 集成的 Alfresco，然后我得到：

WARNING: Fail to execute script in function __bm_OPEN(). Source:
------
" + count = 0;
controller = new Packages.com.actuate.json.JSONParser();
controller.loadData(params["JSONURL"],params["USERNAME"],params["PASSWORD"]);
totalCount = controller.getChildCount("data"); + "
-----
A BIRT exception occurred. See next exception for more information.
Error evaluating Javascript expression. Script engine error: TypeError: [JavaPackage com.actuate.json.JSONParser] is not a function, it is object. (/report/data-sources/script-data-source[@id="8"]/method[@name="open"]#2)
 Script source: /report/data-sources/script-data-source[@id="8"]/method[@name="open"], line: 0, text:
__bm_OPEN()
org.eclipse.birt.data.engine.core.DataException: Fail to execute script in function __bm_OPEN(). Source:
------
" + count = 0;
controller = new Packages.com.actuate.json.JSONParser();
controller.loadData(params["JSONURL"],params["USERNAME"],params["PASSWORD"]);
totalCount = controller.getChildCount("data"); + "
-----
A BIRT exception occurred. See next exception for more information.
Error evaluating Javascript expression. Script engine error: TypeError: [JavaPackage com.actuate.json.JSONParser] is not a function, it is object. (/report/data-sources/script-data-source[@id="8"]/method[@name="open"]#2)
 Script source: /report/data-sources/script-data-source[@id="8"]/method[@name="open"], line: 0, text:
__bm_OPEN()
    at org.eclipse.birt.data.engine.script.JSMethodRunner.runScript(JSMethodRunner.java:147)
.
.
.
Caused by: org.mozilla.javascript.EcmaError: TypeError: [JavaPackage com.actuate.json.JSONParser] is not a function, it is object. (/report/data-sources/script-data-source[@id="8"]/method[@name="open"]#2)
.
.
.

真的，我不知道问题是什么，也不知道如何解决，如果有人对此有任何想法，我花了大约 1 周的时间，但没有解决方案...