java - Jasper 报告 - 数字格式问题

Question

我在 Jaspersoft Studio 6.11.0 + Java lib net.sf.jasperreports 6.11.0 上遇到一个奇怪的问题

我正在测试一份简单的报告，从 Studio 生成的报告没问题，但从 Java 生成的报告则不行。

这是由 Jaspersoft Studio 生成的

这是由 Java 代码生成的

Java 生成

在 Java 代码中，Pojo 实例填充了数据，使用 Jackson 进行编码，使用 JRXmlUtils 解析为 org.w3c.dom.Document，然后作为 PARAMETER_XML_DATA_DOCUMENT 发送到 Jasper。

    JasperReport jasperReport = JasperReportUtils.generateJasperReportInstance(dataModel);

    StringWriter writer = new StringWriter();

    JAXBContext context = JAXBContext.newInstance(ContoEconomicoReport.class);
    context.createMarshaller().marshal(dataModel, writer);

    String str = writer.toString();

    System.out.println(str);

    Document document = JRXmlUtils.parse(new ByteArrayInputStream(str.getBytes()));

    parameters.put(JRXPathQueryExecuterFactory.PARAMETER_XML_DATA_DOCUMENT, document);

    JasperPrint jPrint = JasperFillManager.fillReport(jasperReport, parameters);

执行上述代码将生成报告，其中打印的数字(BigDecimal)格式错误(左移 2 位数字)。

Jaspersoft 报告生成

从上面的代码来看，用syso打印的字符串是

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<report>
    <object>
        <controvalore>2564894.01</controvalore>
    </object>
    <object>
        <controvalore>25648946.21</controvalore>
    </object>
    <object>
        <controvalore>25648.01</controvalore>
    </object>
</report>

如果它采用该字符串，将其放入 xml 文件中并将其用作 Jaspersoft Studio 中的数据适配器，则生成的报告将显示预期值。

我已经检查了区域设置，Java 和 Studio 都使用相同的区域设置。

这是报告:

    <?xml version="1.0" encoding="UTF-8"?>
<!-- Created with Jaspersoft Studio version 6.11.0.final using JasperReports Library version 6.11.0-0c4056ccaa4d25a5a8c45672d2f764ea3498bebb  -->
<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="CONTO_ECONOMICO" pageWidth="842" pageHeight="595" orientation="Landscape" columnWidth="802" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" isSummaryNewPage="true" uuid="ec42ac74-05f9-4eeb-988b-cb92c2bd1e27">
    <property name="com.jaspersoft.studio.data.defaultdataadapter" value="ReportDataAdapter"/>
    <property name="com.jaspersoft.studio.unit." value="pixel"/>
    <property name="com.jaspersoft.studio.unit.pageHeight" value="pixel"/>
    <property name="com.jaspersoft.studio.unit.pageWidth" value="pixel"/>
    <property name="com.jaspersoft.studio.unit.topMargin" value="pixel"/>
    <property name="com.jaspersoft.studio.unit.bottomMargin" value="pixel"/>
    <property name="com.jaspersoft.studio.unit.leftMargin" value="pixel"/>
    <property name="com.jaspersoft.studio.unit.rightMargin" value="pixel"/>
    <property name="com.jaspersoft.studio.unit.columnWidth" value="pixel"/>
    <property name="com.jaspersoft.studio.unit.columnSpacing" value="pixel"/>
    <subDataset name="ListDataset" uuid="3b446c0b-520e-494d-97e6-0118bad0afb6">
        <property name="com.jaspersoft.studio.data.defaultdataadapter" value="ReportDataAdapter"/>
        <queryString language="XPath">
            <![CDATA[/report/object]]>
        </queryString>
        <field name="controvalore" class="java.math.BigDecimal">
            <property name="net.sf.jasperreports.xpath.field.expression" value="controvalore"/>
            <fieldDescription><![CDATA[controvalore]]></fieldDescription>
        </field>
    </subDataset>
    <parameter name="XML_DATA_DOCUMENT" class="org.w3c.dom.Document" isForPrompting="false"/>
    <parameter name="XML_INPUT_STREAM" class="java.io.InputStream" isForPrompting="false"/>
    <parameter name="XML_FILE" class="java.io.File" isForPrompting="false"/>
    <parameter name="net.sf.jasperreports.xml.source" class="java.lang.String" isForPrompting="false"/>
    <parameter name="XML_DATE_PATTERN" class="java.lang.String" isForPrompting="false"/>
    <parameter name="XML_NUMBER_PATTERN" class="java.lang.String" isForPrompting="false"/>
    <parameter name="XML_LOCALE" class="java.util.Locale" isForPrompting="false"/>
    <parameter name="XML_TIME_ZONE" class="java.util.TimeZone" isForPrompting="false"/>
    <queryString language="xPath">
        <![CDATA[/report]]>
    </queryString>
    <background>
        <band splitType="Stretch"/>
    </background>
    <detail>
        <band height="348" splitType="Stretch">
            <property name="com.jaspersoft.studio.layout" value="com.jaspersoft.studio.editor.layout.FreeLayout"/>
            <componentElement>
                <reportElement x="70" y="0" width="170" height="50" uuid="52daaff5-b717-469a-b917-dea9d70a05e0">
                    <property name="com.jaspersoft.studio.unit.height" value="px"/>
                    <property name="com.jaspersoft.studio.layout" value="com.jaspersoft.studio.editor.layout.FreeLayout"/>
                    <property name="com.jaspersoft.studio.unit.width" value="px"/>
                </reportElement>
                <jr:list xmlns:jr="http://jasperreports.sourceforge.net/jasperreports/components" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports/components http://jasperreports.sourceforge.net/xsd/components.xsd" printOrder="Vertical">
                    <datasetRun subDataset="ListDataset" uuid="0e9f5f26-3550-44fd-b1c3-bc3417de86e6">
                        <datasetParameter name="XML_DATA_DOCUMENT">
                            <datasetParameterExpression><![CDATA[$P{XML_DATA_DOCUMENT}]]></datasetParameterExpression>
                        </datasetParameter>
                        <datasetParameter name="XML_INPUT_STREAM">
                            <datasetParameterExpression><![CDATA[$P{XML_INPUT_STREAM}]]></datasetParameterExpression>
                        </datasetParameter>
                        <datasetParameter name="XML_FILE">
                            <datasetParameterExpression><![CDATA[$P{XML_FILE}]]></datasetParameterExpression>
                        </datasetParameter>
                        <datasetParameter name="net.sf.jasperreports.xml.source">
                            <datasetParameterExpression><![CDATA[$P{net.sf.jasperreports.xml.source}]]></datasetParameterExpression>
                        </datasetParameter>
                        <datasetParameter name="XML_DATE_PATTERN">
                            <datasetParameterExpression><![CDATA[$P{XML_DATE_PATTERN}]]></datasetParameterExpression>
                        </datasetParameter>
                        <datasetParameter name="XML_NUMBER_PATTERN">
                            <datasetParameterExpression><![CDATA[$P{XML_NUMBER_PATTERN}]]></datasetParameterExpression>
                        </datasetParameter>
                        <datasetParameter name="XML_LOCALE">
                            <datasetParameterExpression><![CDATA[$P{XML_LOCALE}]]></datasetParameterExpression>
                        </datasetParameter>
                        <datasetParameter name="XML_TIME_ZONE">
                            <datasetParameterExpression><![CDATA[$P{XML_TIME_ZONE}]]></datasetParameterExpression>
                        </datasetParameter>
                        <connectionExpression><![CDATA[$P{REPORT_CONNECTION}]]></connectionExpression>
                    </datasetRun>
                    <jr:listContents height="50" width="170">
                        <rectangle>
                            <reportElement x="0" y="0" width="170" height="50" backcolor="rgba(255, 255, 255, 0.0)" uuid="0f5160ff-c98b-470e-b70e-a8a04ac36dd7">
                                <property name="com.jaspersoft.studio.unit.x" value="px"/>
                                <property name="com.jaspersoft.studio.unit.y" value="px"/>
                            </reportElement>
                        </rectangle>
                        <textField pattern="#,##0.00">
                            <reportElement x="0" y="0" width="170" height="50" uuid="09c367e3-c63f-4e1c-9602-080e5fe20049"/>
                            <textElement textAlignment="Right" verticalAlignment="Middle"/>
                            <textFieldExpression><![CDATA[$F{controvalore}]]></textFieldExpression>
                        </textField>
                    </jr:listContents>
                </jr:list>
            </componentElement>
        </band>
    </detail>
</jasperReport>

Answer 1

我回答了我自己的问题，因为我找到了解决问题的方法:)

我很确定这与区域设置相关，因为在意大利默认的小数分隔符是逗号而不是点，但甚至强制

parameters.put(JRParameter.REPORT_LOCALE, Locale.US)

没有解决任何问题。

然后我发现，因为我通过发送数据

JRXPathQueryExecuterFactory.PARAMETER_XML_DATA_DOCUMENT

我还需要设置

JRXPathQueryExecuterFactory.XML_LOCALE

为了让报告以预期的方式评估输入数据，现在它就像一个魅力:D

遵循固定代码片段

JasperReport jasperReport = JasperReportUtils.generateJasperReportInstance(dataModel);

StringWriter writer = new StringWriter();

JAXBContext context = JAXBContext.newInstance(ContoEconomicoReport.class);
context.createMarshaller().marshal(dataModel, writer);

String str = writer.toString();

Document document = JRXmlUtils.parse(new ByteArrayInputStream(str.getBytes()));

parameters.put(JRXPathQueryExecuterFactory.PARAMETER_XML_DATA_DOCUMENT, document);
parameters.put(JRXPathQueryExecuterFactory.XML_LOCALE, Locale.US);

JasperPrint jPrint = JasperFillManager.fillReport(jasperReport, parameters);