Java . lang . nosuchmethodexception:未知属性“activePackage”

Question

我将ireport中的Fieldname作为实体类中的属性名。但我遇到了以下异常。

java.lang.NoSuchMethodException: Unknown property 'activePackage'
    at org.apache.commons.beanutils.PropertyUtilsBean.getSimpleProperty(PropertyUtilsBean.java:1122)
    at org.apache.commons.beanutils.PropertyUtilsBean.getNestedProperty(PropertyUtilsBean.java:686)
    at org.apache.commons.beanutils.PropertyUtilsBean.getProperty(PropertyUtilsBean.java:715)
    at org.apache.commons.beanutils.PropertyUtils.getProperty(PropertyUtils.java:290)
    at net.sf.jasperreports.engine.data.JRAbstractBeanDataSource.getBeanProperty(JRAbstractBeanDataSource.java:111)
    at net.sf.jasperreports.engine.data.JRAbstractBeanDataSource.getFieldValue(JRAbstractBeanDataSource.java:96)
    at net.sf.jasperreports.engine.data.JRBeanCollectionDataSource.getFieldValue(JRBeanCollectionDataSource.java:100)
    at net.sf.jasperreports.engine.fill.JRFillDataset.setOldValues(JRFillDataset.java:895)
    at net.sf.jasperreports.engine.fill.JRFillDataset.next(JRFillDataset.java:860)
    at net.sf.jasperreports.engine.fill.JRFillDataset.next(JRFillDataset.java:837)
    at net.sf.jasperreports.engine.fill.JRBaseFiller.next(JRBaseFiller.java:1434)
    at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:126)
    at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:836)
    at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:765)
    at net.sf.jasperreports.engine.fill.JRFiller.fillReport(JRFiller.java:84)
    at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:624)
    at org.springframework.web.servlet.view.jasperreports.AbstractJasperReportsView.fillReport(AbstractJasperReportsView.java:669)
    at org.springframework.web.servlet.view.jasperreports.AbstractJasperReportsView.renderMergedOutputModel(AbstractJasperReportsView.java:559)
    at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
    at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1047)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:817)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:560)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:368)
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109)
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:97)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
    at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:100)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:78)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
    at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:35)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
    at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:177)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
    at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:187)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:79)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:169)
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:309)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
    at java.lang.Thread.run(Thread.java:722)

以下是我的jrxml代码

<?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="report1" language="groovy" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20">
    <field name="activePackage" class="java.lang.String">
        <fieldDescription><![CDATA[activePackage]]></fieldDescription>
    </field>
    <background>
        <band splitType="Stretch"/>
    </background>
    <title>
        <band height="79" splitType="Stretch"/>
    </title>
    <pageHeader>
        <band height="35" splitType="Stretch"/>
    </pageHeader>
    <columnHeader>
        <band height="27" splitType="Stretch">
            <staticText>
                <reportElement x="0" y="0" width="100" height="20"/>
                <textElement/>
                <text><![CDATA[activePackage]]></text>
            </staticText>
        </band>
    </columnHeader>
    <detail>
        <band height="26" splitType="Stretch">
            <textField>
                <reportElement x="0" y="0" width="100" height="20"/>
                <textElement/>
                <textFieldExpression><![CDATA[$F{activePackage}]]></textFieldExpression>
            </textField>
        </band>
    </detail>
    <columnFooter>
        <band height="45" splitType="Stretch"/>
    </columnFooter>
    <pageFooter>
        <band height="54" splitType="Stretch"/>
    </pageFooter>
    <summary>
        <band height="42" splitType="Stretch"/>
    </summary>
</jasperReport>

下面是我的实体类代码：

@Entity
@JsonAutoDetect
@Table(name = "ra_bdr_rating")
public class RaBdrRating extends BaseModel {
@Column(name="active_package")
    private String activePackage;
 public String getActivePackage() {
        return activePackage;
    }
 public void setActivePackage(String activePackage) {
        this.activePackage = activePackage;
    }
}

这是我的控制器类中的代码

public ModelAndView generateHtmlReport(@ModelAttribute("reports") RaReports     model,ModelAndView modelAndView) throws Exception{

    Map<String,Object> parameterMap = new HashMap<String,Object>();

    List<RaBdrRating> packagesList = reportsDao.retrieveAllPackages(model);

    JRDataSource JRdataSource = new JRBeanCollectionDataSource(packagesList);

    parameterMap.put("datasource", JRdataSource);

    //htmlReport bean has ben declared in the jasper-views.xml file
    modelAndView = new ModelAndView("htmlReport", parameterMap);

    return modelAndView;

} 

这里activePackage我在我的实体类中声明为字符串类型的私有变量。所以在我的jrxml中，我给出了与字段描述相同的名称。如果我在iReport中单击预览，我也会遇到同样的问题。我使用的是iReport 4.5.0。这里检索包（模型）有一个jpa查询，它检索所有的包，并以RaBdrRating类型的列表的形式返回。RaBdrRting是我的实体类，我之前发布的那个。我正在将该列表传递给JRBeanGrou的数据源，并将数据源放在映射中。现在我想在我的报告中显示该列表。所以我在iReport中设计了一个报告，这样字段名称必须与实体类中的属性名称匹配。我想现在你会对此有所了解。

Answer 1

添加这个“错误”对我有效

JRDataSource JRdataSource = new JRBeanCollectionDataSource(packagesList, **false**);

Answer 2

从字段中删除文件描述

<fieldDescription><![CDATA[activePackage]]></fieldDescription>