JasperReports Scriptlet 在预览中工作，但在编译时不工作

问题描述 投票：0回答：2

过去几周我一直在使用 JasperReports，尽管我遵循了教程，但我无法实现 Scriptlet（例如 https://community.jaspersoft.com/blog/scriptlet-example-jaspersoft- 6x-begineers-hello-world-sample-example) 到牙齿。

我有一个名为 ImageFormatterScriptlet 的 scriptlet，现在我只想运行它。它在预览中执行，但在使用 java 代码编译时则不然。

我总是收到以下错误：

net.sf.jasperreports.engine.JRException: Errors were encountered when compiling report expressions class file:
C:\develop\eclipse-installations\integration1\eclipse\rm_requirementsTypes_1554205368772_548397.java:272: error: package enco.sox2.cdo.server.reports.internal.scriptlets does not exist
                value = ((enco.sox2.cdo.server.reports.internal.scriptlets.ImageFormatterScriptlet)parameter_ImageFormatterScriptlet_SCRIPTLET.getValue()).extractImagesAndSave(); //$JR_EXPR_ID=23$
                                                                          ^
C:\develop\eclipse-installations\integration1\eclipse\rm_requirementsTypes_1554205368772_548397.java:410: error: package enco.sox2.cdo.server.reports.internal.scriptlets does not exist
                value = ((enco.sox2.cdo.server.reports.internal.scriptlets.ImageFormatterScriptlet)parameter_ImageFormatterScriptlet_SCRIPTLET.getValue()).extractImagesAndSave(); //$JR_EXPR_ID=23$
                                                                          ^
C:\develop\eclipse-installations\integration1\eclipse\rm_requirementsTypes_1554205368772_548397.java:548: error: package enco.sox2.cdo.server.reports.internal.scriptlets does not exist
                value = ((enco.sox2.cdo.server.reports.internal.scriptlets.ImageFormatterScriptlet)parameter_ImageFormatterScriptlet_SCRIPTLET.getValue()).extractImagesAndSave(); //$JR_EXPR_ID=23$
                                                                          ^
3 errors
.
Filling out enco/sox2/rm/master_report.jrxml

我认为可能是： 无法解析为 Jaspersoft Studio 类型

但事实并非如此。

我导入 jar，创建 scriptlet，但它总是抛出此异常！该类位于所述文件夹中，由于它在预览中工作，所以我完全傻眼了。

我正在使用 Windows 7、JasperReports Plugin for Eclipse、6.1.1（我知道，它很旧）

编辑：有时重新启动后会抛出此异常：

[ERROR] net.sf.jasperreports.engine.JRException: Error loading scriptlet class: enco.sox2.workspace.ImageFormatterScriptlet.
enco.sox2.reportmanager.ReportException: net.sf.jasperreports.engine.JRException: Error loading scriptlet class: enco.sox2.workspace.ImageFormatterScriptlet.
    at enco.sox2.reportmanager.ReportCommand.fillReport(ReportCommand.java:110)
    at enco.sox2.reportmanager.ReportCommand.export(ReportCommand.java:165)
    at enco.sox2.reportmanager.ReportCommand.export(ReportCommand.java:159)
    at enco.sox2.reportmanager.ReportManager.generateReportToStream(ReportManager.java:175)
    at enco.sox2.cdo.server.reports.service.CdoReportService.generateReportToStream(CdoReportService.java:87)
    at enco.sox2.workspace.cdo.server.internal.CreateReportIndication.responding(CreateReportIndication.java:103)
    at org.eclipse.emf.cdo.server.internal.net4j.protocol.CDOServerIndicationWithMonitoring.responding(CDOServerIndicationWithMonitoring.java:177)
    at org.eclipse.net4j.signal.IndicationWithMonitoring.responding(IndicationWithMonitoring.java:93)
    at org.eclipse.net4j.signal.IndicationWithResponse.doExtendedOutput(IndicationWithResponse.java:106)
    at org.eclipse.net4j.signal.Signal.doOutput(Signal.java:346)
    at org.eclipse.net4j.signal.IndicationWithResponse.execute(IndicationWithResponse.java:75)
    at org.eclipse.net4j.signal.IndicationWithMonitoring.execute(IndicationWithMonitoring.java:66)
    at org.eclipse.net4j.signal.Signal.runSync(Signal.java:283)
    at org.eclipse.net4j.signal.Signal.run(Signal.java:162)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Caused by: net.sf.jasperreports.engine.JRException: Error loading scriptlet class: enco.sox2.workspace.ImageFormatterScriptlet.
    at net.sf.jasperreports.engine.scriptlets.DefaultScriptletFactory.getScriptlet(DefaultScriptletFactory.java:115)
    at net.sf.jasperreports.engine.scriptlets.DefaultScriptletFactory.getScriplets(DefaultScriptletFactory.java:90)
    at net.sf.jasperreports.engine.fill.JRFillDataset.createScriptlets(JRFillDataset.java:512)
    at net.sf.jasperreports.engine.fill.JRFillDataset.setParameterValues(JRFillDataset.java:631)
    at net.sf.jasperreports.engine.fill.BaseReportFiller.setParameters(BaseReportFiller.java:436)
    at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:523)
    at net.sf.jasperreports.parts.subreport.SubreportFillPart.fill(SubreportFillPart.java:174)
    at net.sf.jasperreports.engine.part.FillPart.fill(FillPart.java:77)
    at net.sf.jasperreports.engine.fill.PartReportFiller.fillPart(PartReportFiller.java:406)
    at net.sf.jasperreports.engine.fill.PartReportFiller.fillParts(PartReportFiller.java:385)
    at net.sf.jasperreports.engine.fill.PartReportFiller.fillDetail(PartReportFiller.java:337)
    at net.sf.jasperreports.engine.fill.PartReportFiller.fillReport(PartReportFiller.java:280)
    at net.sf.jasperreports.engine.fill.PartReportFiller.fill(PartReportFiller.java:214)
    at net.sf.jasperreports.engine.fill.BaseReportFiller.fill(BaseReportFiller.java:396)
    at net.sf.jasperreports.engine.fill.JRFiller.fill(JRFiller.java:91)
    at net.sf.jasperreports.engine.JasperFillManager.fill(JasperFillManager.java:456)
    at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:863)
    at enco.sox2.reportmanager.ReportCommand.fillReport(ReportCommand.java:97)
    ... 16 more
Caused by: java.lang.ClassNotFoundException: enco.sox2.workspace.ImageFormatterScriptlet cannot be found by enco.sox2.jasperreports_1.0.0.qualifier
    at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:484)
    at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:395)
    at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:387)
    at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:150)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:348)
    at net.sf.jasperreports.engine.util.JRClassLoader.loadClassForRealName(JRClassLoader.java:174)
    at net.sf.jasperreports.engine.util.JRClassLoader.loadClassForName(JRClassLoader.java:114)
    at net.sf.jasperreports.engine.scriptlets.DefaultScriptletFactory.getScriptlet(DefaultScriptletFactory.java:110)
    ... 33 more

!ENTRY enco.sox2.cdo.server.reports 4 0 2019-04-02 15:13:16.794
!MESSAGE net.sf.jasperreports.engine.JRException: Error loading scriptlet class: enco.sox2.workspace.ImageFormatterScriptlet.
!STACK 0
enco.sox2.reportmanager.ReportException: net.sf.jasperreports.engine.JRException: Error loading scriptlet class: enco.sox2.workspace.ImageFormatterScriptlet.
    at enco.sox2.reportmanager.ReportCommand.fillReport(ReportCommand.java:110)
    at enco.sox2.reportmanager.ReportCommand.export(ReportCommand.java:165)
    at enco.sox2.reportmanager.ReportCommand.export(ReportCommand.java:159)
    at enco.sox2.reportmanager.ReportManager.generateReportToStream(ReportManager.java:175)
    at enco.sox2.cdo.server.reports.service.CdoReportService.generateReportToStream(CdoReportService.java:87)
    at enco.sox2.workspace.cdo.server.internal.CreateReportIndication.responding(CreateReportIndication.java:103)
    at org.eclipse.emf.cdo.server.internal.net4j.protocol.CDOServerIndicationWithMonitoring.responding(CDOServerIndicationWithMonitoring.java:177)
    at org.eclipse.net4j.signal.IndicationWithMonitoring.responding(IndicationWithMonitoring.java:93)
    at org.eclipse.net4j.signal.IndicationWithResponse.doExtendedOutput(IndicationWithResponse.java:106)
    at org.eclipse.net4j.signal.Signal.doOutput(Signal.java:346)
    at org.eclipse.net4j.signal.IndicationWithResponse.execute(IndicationWithResponse.java:75)
    at org.eclipse.net4j.signal.IndicationWithMonitoring.execute(IndicationWithMonitoring.java:66)
    at org.eclipse.net4j.signal.Signal.runSync(Signal.java:283)
    at org.eclipse.net4j.signal.Signal.run(Signal.java:162)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Caused by: net.sf.jasperreports.engine.JRException: Error loading scriptlet class: enco.sox2.workspace.ImageFormatterScriptlet.
    at net.sf.jasperreports.engine.scriptlets.DefaultScriptletFactory.getScriptlet(DefaultScriptletFactory.java:115)
    at net.sf.jasperreports.engine.scriptlets.DefaultScriptletFactory.getScriplets(DefaultScriptletFactory.java:90)
    at net.sf.jasperreports.engine.fill.JRFillDataset.createScriptlets(JRFillDataset.java:512)
    at net.sf.jasperreports.engine.fill.JRFillDataset.setParameterValues(JRFillDataset.java:631)
    at net.sf.jasperreports.engine.fill.BaseReportFiller.setParameters(BaseReportFiller.java:436)
    at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:523)
    at net.sf.jasperreports.parts.subreport.SubreportFillPart.fill(SubreportFillPart.java:174)
    at net.sf.jasperreports.engine.part.FillPart.fill(FillPart.java:77)
    at net.sf.jasperreports.engine.fill.PartReportFiller.fillPart(PartReportFiller.java:406)
    at net.sf.jasperreports.engine.fill.PartReportFiller.fillParts(PartReportFiller.java:385)
    at net.sf.jasperreports.engine.fill.PartReportFiller.fillDetail(PartReportFiller.java:337)
    at net.sf.jasperreports.engine.fill.PartReportFiller.fillReport(PartReportFiller.java:280)
    at net.sf.jasperreports.engine.fill.PartReportFiller.fill(PartReportFiller.java:214)
    at net.sf.jasperreports.engine.fill.BaseReportFiller.fill(BaseReportFiller.java:396)
    at net.sf.jasperreports.engine.fill.JRFiller.fill(JRFiller.java:91)
    at net.sf.jasperreports.engine.JasperFillManager.fill(JasperFillManager.java:456)
    at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:863)
    at enco.sox2.reportmanager.ReportCommand.fillReport(ReportCommand.java:97)
    ... 16 more
Caused by: java.lang.ClassNotFoundException: enco.sox2.workspace.ImageFormatterScriptlet cannot be found by enco.sox2.jasperreports_1.0.0.qualifier
    at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:484)
    at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:395)
    at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:387)
    at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:150)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:348)
    at net.sf.jasperreports.engine.util.JRClassLoader.loadClassForRealName(JRClassLoader.java:174)
    at net.sf.jasperreports.engine.util.JRClassLoader.loadClassForName(JRClassLoader.java:114)
    at net.sf.jasperreports.engine.scriptlets.DefaultScriptletFactory.getScriptlet(DefaultScriptletFactory.java:110)
    ... 33 more

我该如何解决这个问题？

提前致谢。

java jasper-reports classnotfoundexception scriptlet
2个回答
1
投票

当你提到“我导入jar”时，你的意思是把jar放在你的jasperserver目录下吗？如果没有，您必须这样做，即您将需要，

  • 创建你的类的 jar
  • 然后将 jar 添加到“.. pache-tomcat\webapps\jasperserver-pro\WEB-INF\lib”目录下
  • 重新启动服务器（如果它已经在运行）

此处提供了一个示例：https://community.jaspersoft.com/blog/scriptlet-example-jaspersoft-6x-begineers-hello-world-sample-example

0
投票

就我而言，我发现

Error loading Scriptlet class
是通过添加jar文件解决的，参考error-loading-scriptlet-class和JRAbstractScriptlet。

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