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2009-1-4, 10:31 AM
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用jsp:forward访问birt报表
由于报表中有自定义的参数whdwdm，我在jsp页面中用用jsp:forward访问birt报表，代码为：
代码:
<jsp:forward page="/frameset"> <jsp:param name="_report" value="reports/sbml_report.rptdesign"/> <jsp:param name="_format" value="HTML"/> <jsp:param name="whdwdm" value="420684"/> </jsp:forward> 严重: Servlet.service() for servlet jsp threw exception java.lang.NullPointerException at org.eclipse.birt.report.service.BirtViewerReportService.getParameterDefinitionTask(Unknown Source) at org.eclipse.birt.report.service.BirtViewerReportService.getParameterDefinitions(Unknown Source) at org.eclipse.birt.report.presentation.aggregation.dialog.ParameterDialogFragment.doService(Unknown Source) at org.eclipse.birt.report.presentation.aggregation.AbstractBaseFragment.service(Unknown Source) at org.eclipse.birt.report.presentation.aggregation.AbstractBaseFragment.callBack(Unknown Source) 但用a标签可以正常访问 <a href="<%= path+"/frameset?__report=reports/sbml_report.rptdesign&__format=HTML&whdwdm=420684"%>">View Report (reports/new_report.rptdesign)</a> 请专家指点 此帖于 2009-1-4 04:01 PM 被 Tianli 编辑. 
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