無法使用JasperReports生成PDF報告

這個錯誤讓我不知所措，所以任何幫助表示感謝。因此，我正在處理一個使用JSF的Web應用程序，在那裏需要生成一個報告，以便用戶可以下載它。但是，每當我嘗試生成報告時，我都會得到這個堆棧跟蹤：無法使用JasperReports生成PDF報告

java.lang.NoClassDefFoundError: Could not initialize class net.sf.jasperreports.engine.util.JRStyledTextParser 
    net.sf.jasperreports.engine.fill.JRBaseFiller.<init>(JRBaseFiller.java:110) 
    net.sf.jasperreports.engine.fill.JRVerticalFiller.<init>(JRVerticalFiller.java:69) 
    net.sf.jasperreports.engine.fill.JRVerticalFiller.<init>(JRVerticalFiller.java:57) 
    net.sf.jasperreports.engine.fill.JRFiller.createBandReportFiller(JRFiller.java:200) 
    net.sf.jasperreports.engine.fill.JRFiller.createReportFiller(JRFiller.java:215) 
    net.sf.jasperreports.engine.fill.JRFiller.fill(JRFiller.java:84) 
    net.sf.jasperreports.engine.JasperFillManager.fill(JasperFillManager.java:456) 
    net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:863) 
    br.com.ead.jasper.RelatorioUtil.geraRelatorio(RelatorioUtil.java:43) 
    br.com.ead.web.RelatorioBean.gerarRelatorio(RelatorioBean.java:31) 
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    java.lang.reflect.Method.invoke(Method.java:498) 
    javax.el.BeanELResolver.invoke(BeanELResolver.java:158) 
    javax.el.CompositeELResolver.invoke(CompositeELResolver.java:79) 
    org.apache.el.parser.AstValue.getValue(AstValue.java:159) 
    org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:184) 
    com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109) 
    org.primefaces.component.filedownload.FileDownloadActionListener.processAction(FileDownloadActionListener.java:53) 
    javax.faces.event.ActionEvent.processListener(ActionEvent.java:88) 
    javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:813) 
    javax.faces.component.UICommand.broadcast(UICommand.java:300) 
    javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790) 
    javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1282) 
    com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81) 
    com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) 
    com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198) 
    javax.faces.webapp.FacesServlet.service(FacesServlet.java:646) 
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) 
    org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393) 
    br.com.ead.filter.CharsetFilter.doFilter(CharsetFilter.java:26) 
    br.com.ead.filter.ConexaoHibernateFilter.doFilter(ConexaoHibernateFilter.java:42) 
    br.com.ead.filter.LoginFilterProfessor.doFilter(LoginFilterProfessor.java:35)

錯誤似乎相當直接。看起來像這個類class net.sf.jasperreports.engine.util.JRStyledTextParser丟失，但它實際上是在我的類路徑。我無法找到一種方法來完成這項工作！我使用Maven作爲依賴管理器，所以這裏是我的依賴關係：

<dependencies> 

     <!-- https://mvnrepository.com/artifact/joda-time/joda-time --> 
     <dependency> 
      <groupId>joda-time</groupId> 
      <artifactId>joda-time</artifactId> 
      <version>2.8</version> 
     </dependency> 


     <!-- https://mvnrepository.com/artifact/org.primefaces/primefaces --> 
     <dependency> 
      <groupId>org.primefaces</groupId> 
      <artifactId>primefaces</artifactId> 
      <version>5.0</version> 
     </dependency> 


     <!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-core --> 
     <dependency> 
      <groupId>org.hibernate</groupId> 
      <artifactId>hibernate-core</artifactId> 
      <version>4.3.11.Final</version> 
     </dependency> 
     <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java --> 
     <dependency> 
      <groupId>mysql</groupId> 
      <artifactId>mysql-connector-java</artifactId> 
      <version>5.1.23</version> 
     </dependency> 
     <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api --> 
     <dependency> 
      <groupId>javax.servlet</groupId> 
      <artifactId>javax.servlet-api</artifactId> 
      <version>3.0.1</version> 
      <scope>provided</scope> 
     </dependency> 

     <!-- https://mvnrepository.com/artifact/net.sf.jasperreports/jasperreports --> 
     <dependency> 
      <groupId>net.sf.jasperreports</groupId> 
      <artifactId>jasperreports</artifactId> 
      <version>5.0.0</version> 
     </dependency> 


     <dependency> 
      <groupId>com.sun.faces</groupId> 
      <artifactId>jsf-api</artifactId> 
      <version>2.2.9</version> 
     </dependency> 

     <!-- https://mvnrepository.com/artifact/com.itextpdf/itext-pdfa --> 
     <dependency> 
      <groupId>com.itextpdf</groupId> 
      <artifactId>itext-pdfa</artifactId> 
      <version>5.5.11</version> 
     </dependency> 


     <dependency> 
      <groupId>com.sun.faces</groupId> 
      <artifactId>jsf-impl</artifactId> 
      <version>2.2.9</version> 
     </dependency> 

     <!-- https://mvnrepository.com/artifact/org.primefaces.extensions/all-themes --> 
     <dependency> 
      <groupId>org.primefaces.extensions</groupId> 
      <artifactId>all-themes</artifactId> 
      <version>1.0.8</version> 
     </dependency> 


     <!-- https://mvnrepository.com/artifact/javax.servlet.jsp.jstl/javax.servlet.jsp.jstl-api --> 
     <dependency> 
      <groupId>javax.servlet.jsp.jstl</groupId> 
      <artifactId>javax.servlet.jsp.jstl-api</artifactId> 
      <version>1.2.1</version> 
     </dependency> 

     <dependency> 
      <groupId>org.springframework</groupId> 
      <artifactId>spring-core</artifactId> 
      <version>4.2.6.RELEASE</version> 
     </dependency> 


     <!-- https://mvnrepository.com/artifact/commons-logging/commons-logging --> 
     <dependency> 
      <groupId>commons-logging</groupId> 
      <artifactId>commons-logging</artifactId> 
      <version>1.2</version> 
     </dependency> 

     <!-- https://mvnrepository.com/artifact/commons-beanutils/commons-beanutils --> 
     <dependency> 
      <groupId>commons-beanutils</groupId> 
      <artifactId>commons-beanutils</artifactId> 
      <version>1.9.3</version> 
     </dependency> 


     <!-- https://mvnrepository.com/artifact/commons-collections/commons-collections --> 
     <dependency> 
      <groupId>commons-collections</groupId> 
      <artifactId>commons-collections</artifactId> 
      <version>3.2.2</version> 
     </dependency> 

     <!-- https://mvnrepository.com/artifact/commons-digester/commons-digester --> 
     <dependency> 
      <groupId>commons-digester</groupId> 
      <artifactId>commons-digester</artifactId> 
      <version>2.1</version> 
     </dependency> 

     <!-- https://mvnrepository.com/artifact/com.itextpdf/itextpdf --> 
     <dependency> 
      <groupId>com.itextpdf</groupId> 
      <artifactId>itextpdf</artifactId> 
      <version>5.5.11</version> 
     </dependency> 




     <!-- https://mvnrepository.com/artifact/org.apache.tomcat/tomcat-servlet-api --> 
     <dependency> 
      <groupId>org.apache.tomcat</groupId> 
      <artifactId>tomcat-servlet-api</artifactId> 
      <version>9.0.0.M26</version> 
     </dependency> 

     <dependency> 
      <groupId>xml-apis</groupId> 
      <artifactId>xml-apis</artifactId> 
      <version>1.4.01</version> 
     </dependency> 



     <dependency> 
      <groupId>javax</groupId> 
      <artifactId>javaee-web-api</artifactId> 
      <version>7.0</version> 
      <scope>provided</scope> 
     </dependency> 
    </dependencies>

再次，任何幫助表示讚賞。

來源

2017-08-16 Jefferson Tavares

NoClassDefFoundError通常由於缺少類的依賴關係（例如，無法解析的導入）而無法加載類，而不是類本身不存在。我的意思是，可能不是JRStylesTextParser不在類路徑中，而是依賴於它所依賴的另一個類缺失。我會把拋出的調試斷點放在該類的後面，或者查看該類的源代碼來檢查它的所有類依賴關係是否也存在於類路徑中。 –

嘿，感謝您花時間回答。我查看了JRStyleTextParser的源代碼，並且可以解析所有的導入。我甚至在我的代碼中複製並粘貼它們以確保。任何其他想法如何解決這個問題？ –

你試過調試嗎？你有沒有嘗試從簡單的應用程序運行相同的代碼（例如，使用靜態主類的簡單類）？ –

因此，基於您的pom，您正在使用Jasper Reports 5.0.0版本。根據所討論類的this version，導致此錯誤的靜態塊不會記錄或打印靜態初始化期間可能拋出的任何錯誤。

你有兩個選擇：

看看源我聯繫，看看您是否能確定什麼可能在靜態初始化塊拋出一個異常，修復它，然後繼續
升級你的碧玉報告版本至至少 6.3.0。從該類的this version開始，他們至少已經開始打印潛在問題的堆棧跟蹤。這應該讓您更好地瞭解實際的錯誤。

來源

2017-08-16 20:21:57 rmlan

升級每一個依賴項，並添加一些沒有在Jasper Reports官方文檔中列出的新項目爲我修復:) –

無法使用JasperReports生成PDF報告

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