Question

可能重复：
java.util.ConcurrentModificationException in JasperReports

我有问题...... 我在java中有这个源代码：

HashMap<BigDecimal ,JRBeanCollectionDataSource> MyHasMap = .......
parameters.put("MyHasMap ", MyHasMap );

JRBeanCollectionDataSource有一个bean列表。

JasperFillManager.fillReport(............. , parameters, ..............);

在我的报告中，我有这个......

报告“父亲”：

<parameter name="MyHasMap " class="java.util.Map" isForPrompting="false"/>

<band height="25">
            <subreport runToBottom="true">
                <reportElement x="0" y="0" width="555" height="25"/>
                <subreportParameter name="MyHasMap ">
                    <subreportParameterExpression><![CDATA[$P{MyHasMap }]]></subreportParameterExpression>
                </subreportParameter>
                <connectionExpression><![CDATA[$P{REPORT_CONNECTION}]]></connectionExpression>
                <subreportExpression class="java.lang.String"><![CDATA[$P{SUBREPORT_DIR}+
"SUBREPORT1.jasper"]]/>
            </subreport>
</band>

SUBREPORT 1：

<parameter name="MyHasMap " class="java.util.Map" isForPrompting="false"/>

<group name="G_HOJA" isStartNewPage="true">
        <groupExpression><![CDATA[$F{X}]]></groupExpression>
        <groupFooter>
            <band height="33">
                <subreport>
                    <reportElement positionType="Float" x="10" y="14" width="535" height="15"/>
                    <dataSourceExpression><![CDATA[$P{totalProducciones}.get($F{X})]]></dataSourceExpression>
                    <subreportExpression class="java.lang.String"><![CDATA[$P{SUBREPORT_DIR} +
"SUBREPOR2.jasper"]]></subreportExpression>
                </subreport>
            </band>
        </groupFooter>
    </group>

字段X是我在报告中获得查询的字段。

SUBREPORT 2：我绘制了我的豆田

......
....
<textFieldExpression class="java.math.BigDecimal"><![CDATA[$F{FIELD1}]]></textFieldExpression>
...
...

当我有一个字段X的记录都可以，但是当查询返回更多记录时...我有下一个例外：

java.util.ConcurrentModificationException
    at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:372)
    at java.util.AbstractList$Itr.next(AbstractList.java:343)
    at net.sf.jasperreports.engine.data.JRBeanCollectionDataSource.next(JRBeanCollectionDataSource.java:87)
    at net.sf.jasperreports.engine.fill.JRFillDataset.advanceDataSource(JRFillDataset.java:861)
    at net.sf.jasperreports.engine.fill.JRFillDataset.next(JRFillDataset.java:779)
    at net.sf.jasperreports.engine.fill.JRBaseFiller.next(JRBaseFiller.java:1448)
    at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:108)
    at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:923)
    at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:845)
    at net.sf.jasperreports.engine.fill.JRFillSubreport.fillSubreport(JRFillSubreport.java:561)
    at net.sf.jasperreports.engine.fill.JRSubreportRunnable.run(JRSubreportRunnable.java:59)
    at net.sf.jasperreports.engine.fill.JRThreadSubreportRunner.run(JRThreadSubreportRunner.java:205)
    at java.lang.Thread.run(Thread.java:619)

我使用的是jasperrepots - 3.7.0。有人有任何想法???

由于

报告java.util.ConcurrentModificationException

0 个答案: