BIRT csv发射器插件错误-

Question

我正试图使用这个众所周知的插件和文档中的示例从报告中获得CSV，但它抛出了一个异常。我不知道为什么，因为我只是从文档中复制了大部分代码。

我的代码是:

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.util.logging.Level;
import org.eclipse.birt.core.exception.BirtException;
import org.eclipse.birt.core.framework.Platform;
import org.eclipse.birt.report.engine.api.EngineConfig;
import org.eclipse.birt.report.engine.emitter.csv.CSVRenderOption;
import org.eclipse.birt.report.engine.api.IReportEngine;
import org.eclipse.birt.report.engine.api.IReportEngineFactory;
import org.eclipse.birt.report.engine.api.IReportRunnable;
import org.eclipse.birt.report.engine.api.IRunAndRenderTask;
public class RunReport {
    static void runReport() throws FileNotFoundException, BirtException {
        String resourcePath = "C:\Users\hpsa\workspace\My Reports\";
        FileInputStream fs = new FileInputStream(resourcePath + "new_report_1.rptdesign");
        IReportEngine engine = null;
        EngineConfig config = new EngineConfig();
        config.setEngineHome("C:\birtre\birt-runtime-4_3_2\");
        config.setLogConfig("C:\birtre\", Level.FINE);
        config.setResourcePath(resourcePath);
        Platform.startup(config);
        IReportEngineFactory factory = (IReportEngineFactory) Platform.createFactoryObject(IReportEngineFactory.EXTENSION_REPORT_ENGINE_FACTORY);
        engine = factory.createReportEngine(config);
        engine.changeLogLevel(Level.FINE);
        IReportRunnable design = engine.openReportDesign(fs);
        IRunAndRenderTask task = engine.createRunAndRenderTask(design);
        CSVRenderOption csvOption = new CSVRenderOption();
        String format = CSVRenderOption.OUTPUT_FORMAT_CSV;
        csvOption.setOutputFormat(format);
        csvOption.setOutputFileName("newBIRTcsv.csv");
        csvOption.setShowDatatypeInSecondRow(true);
        csvOption.setExportTableByName("SecondTable");
        csvOption.setDelimiter("t");
        csvOption.setReplaceDelimiterInsideTextWith("-");
        task.setRenderOption(csvOption); 
        task.setEmitterID("org.eclipse.birt.report.engine.emitter.csv");
        task.run();
        task.close();
        Platform.shutdown();
        System.out.println("Report Generated Sucessfully!!");   
    }
    public static void main(String[] args) {
        try {
            runReport();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }  
}

我得到了异常:

    Exception in thread "main" java.lang.NoClassDefFoundError: org/eclipse/core/runtime/CoreException
    at org.eclipse.birt.core.framework.Platform.createPlatformLauncher(Platform.java:115)
    at org.eclipse.birt.core.framework.Platform.startup(Platform.java:74)
    at com.demshin.birttest.RunReport.runReport(RunReport.java:26)
    at com.demshin.birttest.RunReport.main(RunReport.java:55)
Caused by: java.lang.ClassNotFoundException: org.eclipse.core.runtime.CoreException
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
    ... 4 more

我找到了包org.eclipse.core.runtime并在构建路径中注册，但随后我得到了相同的异常。实际上，org.eclipse.core.runtime包中没有任何coreexception .类。我做错了什么?

Answer 1

不推荐将引擎设置为home，大多数情况下它会阻止平台启动，就像您的情况一样。删除这一行:

config.setEngineHome("C:\birtre\birt-runtime-4_3_2\");

您只需要确保birt运行时4.3.2位于上下文的类路径中。此外，我建议您先尝试生成一个本机格式，如pdf，然后再尝试使用csv格式。

Answer 2

我尝试了很多导入不同jar的变体，但最后我发现这里有一个奇怪的决定:

转到项目资源管理器，右键单击属性为项目，转到Java构建路径，点击外部jar按钮，然后选择下面的所有库C: birt_runtime birt-runtime-2_1_0 ReportEngine lib 文件夹

这引起了混乱，但至少开始了。