Jasper Report编译报错：字符串字面量未正确闭合双引号

错误日志 #

SEVERE: Servlet.service() for servlet [dispatcher] in context with path [/myapp] threw exception [Request processing failed; nested exception is com.openpayment.api.service.ApplicationException: net.sf.jasperreports.engine.JRException: 编译报表表达式类文件时遇到错误：
1. 字符串字面量未通过双引号正确闭合
                value = ((net.sf.jasperreports.engine.JasperReport)parameter_subreportA5.getValue())";; //$JR_EXPR_ID=15$
                                                                                                    <------------------>

问题定位 #

错误根源是JRXML中<subreportExpression>标签内的CDATA表达式多了一个未匹配的双引号，导致编译时字符串字面量无法正确闭合。

错误代码片段：

<subreportExpression><![CDATA[$P{subreportA5}"]]></subreportExpression>

修复方案 #

移除多余的双引号，修改为：

<subreportExpression><![CDATA[$P{subreportA5}]]></subreportExpression>

完整修复后的<subreport>节点代码：

<subreport>
    <reportElement x="0" y="0" width="420" height="595" uuid="b96f6247-8f25-40be-b361-d70f8dd8db5a">
        <property name="com.jaspersoft.studio.unit.width" value="px"/>
        <property name="com.jaspersoft.studio.unit.height" value="px"/>
    </reportElement>
    <subreportParameter name="name">
        <subreportParameterExpression><![CDATA[$P{name}]]></subreportParameterExpression>
    </subreportParameter>
    <subreportParameter name="url">
        <subreportParameterExpression><![CDATA[$P{url}]]></subreportParameterExpression>
    </subreportParameter>
    <subreportParameter name="account">
        <subreportParameterExpression><![CDATA[$P{account}]]></subreportParameterExpression>
    </subreportParameter>
    <dataSourceExpression><![CDATA[new net.sf.jasperreports.engine.JREmptyDataSource()]]></dataSourceExpression>
    <subreportExpression><![CDATA[$P{subreportA5}]]></subreportExpression>
</subreport>

内容的提问来源于stack exchange，提问作者Eljah