您好我在使用iReport设计器表报告元素时收到以下错误消息：
Error filling print... java.lang.String cannot be cast to java.lang.Boolean
java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Boolean
at net.sf.jasperreports.components.table.fill.FillTable.toPrintColumn(FillTable.java:116)
at net.sf.jasperreports.components.table.fill.FillTable$FillColumnEvaluator.visitColumn(FillTable.java:143)
at net.sf.jasperreports.components.table.fill.FillTable$FillColumnEvaluator.visitColumn(FillTable.java:130)
at net.sf.jasperreports.components.table.StandardColumn.visitColumn(StandardColumn.java:73)
at net.sf.jasperreports.components.table.fill.FillTable.evaluateColumns(FillTable.java:205)
at net.sf.jasperreports.components.table.fill.FillTable.evaluate(FillTable.java:98)
at net.sf.jasperreports.engine.fill.JRFillComponentElement.evaluate(JRFillComponentElement.java:88)
at net.sf.jasperreports.engine.fill.JRFillElementContainer.evaluate(JRFillElementContainer.java:257)
at net.sf.jasperreports.engine.fill.JRFillBand.evaluate(JRFillBand.java:473)
at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillColumnBand(JRVerticalFiller.java:2021)
at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillGroupHeader(JRVerticalFiller.java:616)
at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillGroupHeaders(JRVerticalFiller.java:538)
at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReportStart(JRVerticalFiller.java:263)
at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:128)
at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:836)
at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:746)
at net.sf.jasperreports.engine.fill.JRFiller.fillReport(JRFiller.java:58)
at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:417)
at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:247)
at com.jaspersoft.ireport.designer.compiler.IReportCompiler.run(IReportCompiler.java:879)
at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572)
at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997)
我正在使用存储过程将光标作为输出返回。
我已将此表格报告元素放在我的一个群组标题中。
提前致谢
Meeza
答案 0 :(得分：1)
如果使用String进行评估，请检查您的样式条件。为了确保一切正常，请使用new Boolean( ... )围绕所有样式条件。