JasperReport iReport:JRException:从bean检索字段值时出错 [英] JasperReport iReport: JRException: Error retrieving field value from bean
问题描述
我试图了解iReport的工作原理以及如何创建简单的jrxml文件. 该报告具有标题和标题，并且数据应在表中.当我尝试使用预览按钮检查报告的外观时，可以看到标题和标题，但是看不到表格(请注意，我单击了所有字段的使用默认值").当我不使用默认值时，会出现此错误.
I'm trying to understand how iReport works and how to create a simple jrxml file. The report has a title and header and the data should be in a table. When I try to check how the report looks like using the preview button, I could see the title and header but not the table (Please note that I use that I clicked the "Use default value" for all fields). When I did not use the default value, I get this error.
填充打印错误... net.sf.jasperreports.engine.JRException:从bean中检索字段值时出错:名称 net.sf.jasperreports.engine.JRRuntimeException:net.sf.jasperreports.engine.JRException:从bean中检索字段值时出错:名称 在net.sf.jasperreports.engine.fill.JRFillSubreport.prepare(JRFillSubreport.java:809) 在net.sf.jasperreports.components.table.fill.FillTableSubreport.prepareSubreport(FillTableSubreport.java:156) 在net.sf.jasperreports.components.table.fill.FillTable.prepare(FillTable.java:400) 在net.sf.jasperreports.engine.fill.JRFillComponentElement.prepare(JRFillComponentElement.java:151) 导致原因:net.sf.jasperreports.engine.JRException:错误从bean中检索字段值:名称 在net.sf.jasperreports.engine.data.JRAbstractBeanDataSource.getBeanProperty(JRAbstractBeanDataSource.java:123) 在net.sf.jasperreports.engine.data.JRAbstractBeanDataSource.getFieldValue(JRAbstractBeanDataSource.java:96) 在net.sf.jasperreports.engine.data.JRBeanCollectionDataSource.getFieldValue(JRBeanCollectionDataSource.java:109) 导致原因:java.lang.NoSuchMethodException:类'java.lang.String'上的未知属性'name' 在org.apache.commons.beanutils.PropertyUtilsBean.getSimpleProperty(PropertyUtilsBean.java:1322) 在org.apache.commons.beanutils.PropertyUtilsBean.getNestedProperty(PropertyUtilsBean.java:770) 在org.apache.commons.beanutils.PropertyUtilsBean.getProperty(PropertyUtilsBean.java:846) 在org.apache.commons.beanutils.PropertyUtils.getProperty(PropertyUtils.java:426) 在net.sf.jasperreports.engine.data.JRAbstractBeanDataSource.getBeanProperty(JRAbstractBeanDataSource.java:111) ... 15更多打印件未填满.尝试使用EmptyDataSource ...
Error filling print... net.sf.jasperreports.engine.JRException: Error retrieving field value from bean : name net.sf.jasperreports.engine.JRRuntimeException: net.sf.jasperreports.engine.JRException: Error retrieving field value from bean : name at net.sf.jasperreports.engine.fill.JRFillSubreport.prepare(JRFillSubreport.java:809) at net.sf.jasperreports.components.table.fill.FillTableSubreport.prepareSubreport(FillTableSubreport.java:156) at net.sf.jasperreports.components.table.fill.FillTable.prepare(FillTable.java:400) at net.sf.jasperreports.engine.fill.JRFillComponentElement.prepare(JRFillComponentElement.java:151) Caused by: net.sf.jasperreports.engine.JRException: Error retrieving field value from bean : name at net.sf.jasperreports.engine.data.JRAbstractBeanDataSource.getBeanProperty(JRAbstractBeanDataSource.java:123) at net.sf.jasperreports.engine.data.JRAbstractBeanDataSource.getFieldValue(JRAbstractBeanDataSource.java:96) at net.sf.jasperreports.engine.data.JRBeanCollectionDataSource.getFieldValue(JRBeanCollectionDataSource.java:109) Caused by: java.lang.NoSuchMethodException: Unknown property 'name' on class 'class java.lang.String' at org.apache.commons.beanutils.PropertyUtilsBean.getSimpleProperty(PropertyUtilsBean.java:1322) at org.apache.commons.beanutils.PropertyUtilsBean.getNestedProperty(PropertyUtilsBean.java:770) at org.apache.commons.beanutils.PropertyUtilsBean.getProperty(PropertyUtilsBean.java:846) at org.apache.commons.beanutils.PropertyUtils.getProperty(PropertyUtils.java:426) at net.sf.jasperreports.engine.data.JRAbstractBeanDataSource.getBeanProperty(JRAbstractBeanDataSource.java:111) ... 15 more Print not filled. Try to use an EmptyDataSource...
我认为也许这个问题与我为List键入数据的方式有关.格式可能不正确.这就是我输入示例数据的方式
I thought that maybe that problem has something to do with how I typed the data for List. Probably the format is wrong. This is how I typed the sample data
(myName，5，马尼拉)
(myName, 5, Manila)
(基于屏幕截图，格式是否正确?我什至尝试将其括在方括号中，但仍然出现相同的错误.)
(Based on the screenshot, Is the format correct? I even tried enclosing it in a square bracket but I still get the same error.)
请注意，我有3列名称，年龄，地址.
please note that I have 3 columns Name , Age , Address.
但是在错误消息中，我注意到了
But in the error message I noticed this
Unknown property 'name' on class 'class java.lang.String'
这使我认为创建数据集时做错了什么. (对不起，如果我使用了错误的术语).
which makes me think that I did something wrong when I create the dataset. (Sorry if I used a wrong term).
无论如何，这是iReport生成的xml.
Anyway, here's the xml generated by iReport.
<?xml version="1.0" encoding="UTF-8"?>
<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="firstReport" language="groovy" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="597c0716-df6b-42ec-a7c8-863eb1b7174a">
<style name="table">
<box>
<pen lineWidth="1.0" lineColor="#000000"/>
</box>
</style>
<style name="table_TH" mode="Opaque" backcolor="#7FFFD4">
<box>
<pen lineWidth="0.5" lineColor="#000000"/>
</box>
</style>
<style name="table_CH" mode="Opaque" backcolor="#BFFFEA">
<box>
<pen lineWidth="0.5" lineColor="#000000"/>
</box>
</style>
<style name="table_TD" mode="Opaque" backcolor="#FFFFFF">
<box>
<pen lineWidth="0.5" lineColor="#000000"/>
</box>
</style>
<style name="table 1">
<box>
<pen lineWidth="1.0" lineColor="#000000"/>
</box>
</style>
<style name="table 1_TH" mode="Opaque" backcolor="#7FFFD4">
<box>
<pen lineWidth="0.5" lineColor="#000000"/>
</box>
</style>
<style name="table 1_CH" mode="Opaque" backcolor="#BFFFEA">
<box>
<pen lineWidth="0.5" lineColor="#000000"/>
</box>
</style>
<style name="table 1_TD" mode="Opaque" backcolor="#FFFFFF">
<box>
<pen lineWidth="0.5" lineColor="#000000"/>
</box>
</style>
<subDataset name="Table Dataset 2" uuid="208e382c-09df-484e-8d2d-a4eb4f4e48ba">
<field name="name" class="java.lang.String"/>
<field name="age" class="java.lang.String"/>
<field name="address" class="java.lang.String"/>
</subDataset>
<parameter name="companyName" class="java.lang.String"/>
<parameter name="date" class="java.util.Date"/>
<parameter name="bean" class="java.util.List"/>
<background>
<band splitType="Stretch"/>
</background>
<title>
<band height="32" splitType="Stretch">
<staticText>
<reportElement x="182" y="0" width="184" height="25" uuid="fe64d4b4-efb1-4ed2-ae06-772728fc8b65"/>
<textElement>
<font fontName="Bookman Old Style" size="15" isBold="true"/>
</textElement>
<text><![CDATA[Chart Of Account List]]></text>
</staticText>
</band>
</title>
<pageHeader>
<band height="58" splitType="Stretch">
<staticText>
<reportElement x="13" y="0" width="100" height="20" uuid="52ae4669-b47e-408c-aabc-e8f470a1d92b"/>
<text><![CDATA[Company]]></text>
</staticText>
<staticText>
<reportElement x="13" y="38" width="100" height="20" uuid="a27fe0e1-9fe6-423f-a006-46c51c7e3e5e"/>
<text><![CDATA[Date Exported]]></text>
</staticText>
<textField>
<reportElement x="113" y="0" width="100" height="20" uuid="1d600fa2-9de4-4999-9222-98a8bcb484f9"/>
<textFieldExpression><![CDATA[$P{companyName}]]></textFieldExpression>
</textField>
<textField>
<reportElement x="113" y="38" width="100" height="20" uuid="1147b818-90ae-4b41-a757-19a590db41d7"/>
<textFieldExpression><![CDATA[$P{date}]]></textFieldExpression>
</textField>
</band>
</pageHeader>
<columnHeader>
<band height="61" splitType="Stretch"/>
</columnHeader>
<detail>
<band height="125" splitType="Stretch">
<componentElement>
<reportElement key="table 1" style="table 1" x="13" y="0" width="270" height="50" uuid="652523bf-b666-47bc-a1aa-fc20fb9e489a"/>
<jr:table xmlns:jr="http://jasperreports.sourceforge.net/jasperreports/components" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports/components http://jasperreports.sourceforge.net/xsd/components.xsd">
<datasetRun subDataset="Table Dataset 2" uuid="6fcb9950-2d3f-4752-b56d-df7bff1e6991">
<dataSourceExpression><![CDATA[new net.sf.jasperreports.engine.data.JRBeanCollectionDataSource($P{bean})]]></dataSourceExpression>
</datasetRun>
<jr:column width="90" uuid="ee62967c-3669-49fe-a70d-a588ae47439d">
<jr:columnHeader style="table 1_CH" height="30" rowSpan="1">
<staticText>
<reportElement x="0" y="0" width="90" height="30" uuid="a0973bfe-815a-498e-8b25-c3320cfe0f62"/>
<text><![CDATA[Name]]></text>
</staticText>
</jr:columnHeader>
<jr:detailCell style="table 1_TD" height="20" rowSpan="1">
<textField>
<reportElement x="0" y="0" width="90" height="20" uuid="61d8309e-dd7d-4978-b171-9ae9144e2f5c"/>
<textFieldExpression><![CDATA[$F{name}]]></textFieldExpression>
</textField>
</jr:detailCell>
</jr:column>
<jr:column width="90" uuid="76a9e313-d134-420e-898b-7f5f444c4efb">
<jr:columnHeader style="table 1_CH" height="30" rowSpan="1">
<staticText>
<reportElement x="0" y="0" width="90" height="30" uuid="f79fdf71-a673-4d3a-8e10-b986d99b8e9b"/>
<text><![CDATA[Age]]></text>
</staticText>
</jr:columnHeader>
<jr:detailCell style="table 1_TD" height="20" rowSpan="1">
<textField>
<reportElement x="0" y="0" width="90" height="20" uuid="e4342bed-af9c-4541-9e57-a24485d0a94d"/>
<textFieldExpression><![CDATA[$F{age}]]></textFieldExpression>
</textField>
</jr:detailCell>
</jr:column>
<jr:column width="90" uuid="5c38c250-d74e-440c-93cb-3fef8ad38157">
<jr:columnHeader style="table 1_CH" height="30" rowSpan="1">
<staticText>
<reportElement x="0" y="0" width="90" height="30" uuid="4656a074-f345-483a-971b-b00c95746ec0"/>
<text><![CDATA[Address]]></text>
</staticText>
</jr:columnHeader>
<jr:detailCell style="table 1_TD" height="20" rowSpan="1">
<textField>
<reportElement x="0" y="0" width="90" height="20" uuid="f2cc3d1c-97ef-48c1-b6e4-a12acc4e67ad"/>
<textFieldExpression><![CDATA[$F{address}]]></textFieldExpression>
</textField>
</jr:detailCell>
</jr:column>
</jr:table>
</componentElement>
</band>
</detail>
</jasperReport>
1)我制作的jrxml有什么问题?我是否向表格提供了错误的格式化数据?还是我的报告方式有问题?
1) What is wrong with the jrxml that I made? Did I supply a wrong formatted data to the table? Or there's just something wrong with how I did the report?
推荐答案
此问题已通过在数据源表达式中添加"new"关键字来解决.右键单击报表检查器中的表格，您将看到数据源表达式. 编辑表数据源"
This was fixed by adding "new" keyword in the datasource expression. You will see datasource expression by right clicking table in the Report Inspector. "edit Table Datasource"
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