java.lang.NoClassDefFoundError：org/apache/commons/collections/ReferenceMap

Question

真的很新鮮，在java中，講西班牙語的人，所以，盡我所能讓你瞭解我:)。我製作了一個程序，管理一個用於存儲客戶端的mysql數據庫，關於客戶端的信息等。並生成（或嘗試......）報告。我從Eclipse Market安裝了JasperReports（順便說一下，使用Eclipse Kepler）。遵循一些教程，我創造了通過參數創建報告的方式。它只是識別一個客戶端的一個參數。那不是問題。問題是當我點擊我的按鈕，生成報告，其中包含下面的代碼：

JButton btnOk = new JButton("OK"); 
    btnOk.addActionListener(new ActionListener() { 
     public void actionPerformed(ActionEvent arg0) { 
      String doc = jftxtDni.getText(); 
      String sql; 
      boolean respuesta = false; 
      ConexionBaseDatos cc = new ConexionBaseDatos(); 

      sql = "SELECT * FROM clientes WHERE DNI = '"+doc+"'"; 

      rs = cc.Consultar(sql); 

       try 
       { 
        while (rs.next()) 
        { 
        respuesta = true; 
        } 
       } 
       catch (SQLException e) 
       { 
        JOptionPane.showMessageDialog(null, "error sql: "+e.getMessage()); 
       }  

       if (respuesta) 
       { 
        ConexionBaseDatos cd = new ConexionBaseDatos(); 
        Connection cn = cd.Conectar(); 
        JasperReport jr = null; 
        String archivo = "src/reportes/Tree.jasper"; 
        try 
        { 
         HashMap<String, Object> parametro = new HashMap<String, Object>(); 
         parametro.put("dni", doc); 
         jr = (JasperReport) JRLoader.loadObjectFromFile(archivo); 
         JasperPrint jp = JasperFillManager.fillReport(jr,parametro,cn); 
         JasperViewer jv = new JasperViewer(jp); 
         jv.setVisible(true); 
         jv.setTitle("Informe de cliente"); 

        } 
        catch (JRException e) 
        { 
         JOptionPane.showMessageDialog(null, "error Jasper: "+e.getMessage());; 
        } 

       } 
       else 
       { 
        JOptionPane.showMessageDialog(null, "No existe el cliente en la base de datos, verifique."); 
       } 

       } 
      } 
     ) 

其中儘管變量西班牙語名字，抓由用戶輸入的變量，連接到數據庫，檢查這樣的存在用戶通過其「dni」，如果存在，生成報告，否則，消息錯誤。 當我第一次執行它時，找不到apache.commons.logging，我解決了導入apache commons庫的問題。但之後，錯誤是我題爲這個主題的那個。我說：簡單的蛋糕，下載的Apache公共收藏品，進口的罐子...就是這樣！我以爲......但沒辦法..我得到：

Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: org/apache/commons/collections/ReferenceMap 
at net.sf.jasperreports.extensions.DefaultExtensionsRegistry.<init>(DefaultExtensionsRegistry.java:97) 
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) 
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) 
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) 
at java.lang.reflect.Constructor.newInstance(Unknown Source) 
at java.lang.Class.newInstance(Unknown Source) 
at net.sf.jasperreports.engine.util.ClassUtils.instantiateClass(ClassUtils.java:59) 
at net.sf.jasperreports.extensions.ExtensionsEnvironment.createDefaultRegistry(ExtensionsEnvironment.java:82) 
at net.sf.jasperreports.extensions.ExtensionsEnvironment.<clinit>(ExtensionsEnvironment.java:69) 
at net.sf.jasperreports.engine.util.JRStyledTextParser.<clinit>(JRStyledTextParser.java:83) 
at net.sf.jasperreports.engine.fill.JRBaseFiller.<init>(JRBaseFiller.java:123) 
at net.sf.jasperreports.engine.fill.JRVerticalFiller.<init>(JRVerticalFiller.java:88) 
at net.sf.jasperreports.engine.fill.JRVerticalFiller.<init>(JRVerticalFiller.java:103) 
at net.sf.jasperreports.engine.fill.JRVerticalFiller.<init>(JRVerticalFiller.java:61) 
at net.sf.jasperreports.engine.fill.JRFiller.createFiller(JRFiller.java:179) 
at net.sf.jasperreports.engine.fill.JRFiller.fill(JRFiller.java:81) 
at net.sf.jasperreports.engine.JasperFillManager.fill(JasperFillManager.java:446) 
at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:849) 
at formularios.ImprimirCliente$2.actionPerformed(ImprimirCliente.java:143) 
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source) 
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source) 
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source) 
at javax.swing.DefaultButtonModel.setPressed(Unknown Source) 
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source) 
at java.awt.Component.processMouseEvent(Unknown Source) 
at javax.swing.JComponent.processMouseEvent(Unknown Source) 
at java.awt.Component.processEvent(Unknown Source) 
at java.awt.Container.processEvent(Unknown Source) 
at java.awt.Component.dispatchEventImpl(Unknown Source) 
at java.awt.Container.dispatchEventImpl(Unknown Source) 
at java.awt.Component.dispatchEvent(Unknown Source) 
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source) 
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source) 
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source) 
at java.awt.Container.dispatchEventImpl(Unknown Source) 
at java.awt.Window.dispatchEventImpl(Unknown Source) 
at java.awt.Component.dispatchEvent(Unknown Source) 
at java.awt.EventQueue.dispatchEventImpl(Unknown Source) 
at java.awt.EventQueue.access$200(Unknown Source) 
at java.awt.EventQueue$3.run(Unknown Source) 
at java.awt.EventQueue$3.run(Unknown Source) 
at java.security.AccessController.doPrivileged(Native Method) 
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source) 
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source) 
at java.awt.EventQueue$4.run(Unknown Source) 
at java.awt.EventQueue$4.run(Unknown Source) 
at java.security.AccessController.doPrivileged(Native Method) 
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source) 
at java.awt.EventQueue.dispatchEvent(Unknown Source) 
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) 
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) 
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) 
at java.awt.EventDispatchThread.pumpEvents(Unknown Source) 
at java.awt.EventDispatchThread.pumpEvents(Unknown Source) 
at java.awt.EventDispatchThread.run(Unknown Source) 
Caused by: java.lang.ClassNotFoundException: org.apache.commons.collections.ReferenceMap 
at java.net.URLClassLoader$1.run(Unknown Source) 
at java.net.URLClassLoader$1.run(Unknown Source) 
at java.security.AccessController.doPrivileged(Native Method) 
at java.net.URLClassLoader.findClass(Unknown Source) 
at java.lang.ClassLoader.loadClass(Unknown Source) 
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) 
at java.lang.ClassLoader.loadClass(Unknown Source) 
... 55 more 

... SOOOOO ......我仔細檢查了該庫是確定的，並且它的存在，但由於某些原因，它看起來像日食或Java ，或某種外星人，找不到它..無論如何，我在互聯網上進行了全面研究，發現這個錯誤，這主要是通過導入公共收藏品來解決的......不是我的情況。 Eclipse kepler，java 7和apache commons 4.0。任何模糊的想法..？非常感謝您花時間閱讀，對不起我的英文，並等待一些光..：D

Answer 1

好了，問題解決了！我只需將集合降級到3.2.1，並且工作得很好，部分原因是因爲我一直存在有關其他類（joda-time，commons-digester和javax-servlet）的錯誤。在某些情況下，下載最新版本並不奏效，只需下載一個。所以，之後我的報告完美無瑕。非常感謝您的幫助！！ :)

Answer 2

我下載了一個不同的.jar文件進行常見的收集，它解決了這個問題。 你可以在這裏下載：http://www.java2s.com/Code/Jar/o/Downloadorgapachecommonscollectionsjar.htm