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我正在尝试使用JasperReports生成PDF。

第一次尝试时，我收到此错误：

ERROR [net.sf.jasperreports.extensions.DefaultExtensionsRegistry] Error instantiating extensions registry for chart.theme 
from vfszip:My-App.ear/lib/jasperreports-chart-themes-4.7.0.jar/jasperreports_extension.properties
org.springframework.beans.factory.parsing.BeanDefinitionParsingException: Configuration problem: 
Failed to import bean definitions from relative location [defaultChartPropertiesBean.xml]
Offending resource: URL 
[My-App.ear/lib/jasperreports-chart-themes-4.7.0.jar/net/sf/jasperreports/chartthemes/spring/beans/chartThemesBeans.xml];
nested exception is org.springframework.beans.factory.parsing.BeanDefinitionParsingException: Configuration problem: 
Failed to import bean definitions from relative location [chartConstantsBean.xml]
Offending resource: URL 
[My-App.ear/lib/jasperreports-chart-themes-4.7.0.jar/net/sf/jasperreports/chartthemes/spring/beans/defaultChartPropertiesBean.xml]; 
nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Unexpected exception parsing XML document from URL 
[My-App.ear/lib/jasperreports-chart-themes-4.7.0.jar/net/sf/jasperreports/chartthemes/spring/beans/chartConstantsBean.xml];
nested exception is org.springframework.beans.FatalBeanException: 
Class [org.springframework.beans.factory.xml.UtilNamespaceHandler] for namespace 
[http://www.springframework.org/schema/util] does not implement the [org.springframework.beans.factory.xml.NamespaceHandler] interface
at org.springframework.beans.factory.parsing.FailFastProblemReporter.error(FailFastProblemReporter.java:68)
at org.springframework.beans.factory.parsing.ReaderContext.error(ReaderContext.java:85)
at org.springframework.beans.factory.parsing.ReaderContext.error(ReaderContext.java:76)
at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.importBeanDefinitionResource(DefaultBeanDefinitionDocumentReader.java:219)
at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseDefaultElement(DefaultBeanDefinitionDocumentReader.java:148)
at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:133)
at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.registerBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:93)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.registerBeanDefinitions(XmlBeanDefinitionReader.java:493)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:390)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:334)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:302)
at org.springframework.beans.factory.xml.XmlBeanFactory.<init>(XmlBeanFactory.java:73)
at org.springframework.beans.factory.xml.XmlBeanFactory.<init>(XmlBeanFactory.java:61)
at net.sf.jasperreports.extensions.SpringExtensionsRegistryFactory.getBeanFactory(SpringExtensionsRegistryFactory.java:101)

但是，生成PDF时没有任何问题。

另外，下次我尝试生成一个PDF时，不会再出现错误。这只发生在第一代。

原因是什么？以及如何避免此错误？

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1 回答 1

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OK 问题解决了。

我在类路径中包含了 jasperreports-chart-themes-4.7.0.jar。但是，这个罐子不再使用了。我只使用了 jasper 的默认主题。

从 .ear 中删除这个 jar，一切正常。

不管怎么说，还是要谢谢你

于 2012-10-24T15:43:02.567 回答