无法创建jasperresponse

时间:2015-06-30 07:33:11

标签: java jasper-reports

我在windows中使用netbeans 8.0.2。

在netbeans中为create jasperreport执行我的程序时,执行会抛出此错误:

  

显示java.lang.NullPointerException       at net.sf.jasperreports.engine.JRPropertiesMap.readObject(JRPropertiesMap.java:185)       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)       at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)       在java.lang.reflect.Method.invoke(Method.java:497)       at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)       at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1896)       at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)       在java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)       at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1993)       at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1918)       at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)       在java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)       at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1707)       在java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1345)       at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1993)       at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1918)       at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)       在java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)       at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1993)       at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1918)       at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)       在java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)       at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)       at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:88)       at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:232)       在PckEtiGotta.PrintEngineModel.imprimirVectorEtiquetes(PrintEngineModel.java:832)       在PckEtiGotta.TreballadorSwing.doInBackground(TreballadorSwing.java:193)       在PckEtiGotta.TreballadorSwing.doInBackground(TreballadorSwing.java:16)       在javax.swing.SwingWorker $ 1.call(SwingWorker.java:295)       at java.util.concurrent.FutureTask.run(FutureTask.java:266)       在javax.swing.SwingWorker.run(SwingWorker.java:334)       在java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)       at java.util.concurrent.ThreadPoolExecutor $ Worker.run(ThreadPoolExecutor.java:617)       在java.lang.Thread.run(Thread.java:745)

我的代码更长,但我不会复制所有代码,我看到程序停在这里

try{
file = "C:\\example.jasper"
print=JasperFillManager.fillReport(file, map,con);
}catch(Exception e){
        e.printStackTrace();
         throw new EtiGottaException("PrintEngineModel: "+e.getMessage());}

抱歉我的英文。

1 个答案:

答案 0 :(得分:-1)

我解决了这个问题,我解释了其他用户遇到同样问题的解决方案。

- 转到:“C:\ Program files \ Jaspersoft \ iReport-x.x.x \ ireport \ modules \ ext”

在“C:\ Program files \ java \ jre1.x.x \ lib \ ext”和“C:\ Program files \ java \ jdk1.x.x \ jre \ lib \ ext”中复制此文件:

   •commons-beanutils-x.x
   •commons-collections-x.x
   •commons-digester-x.x
   •commons-javaflow-xxxxxxxx
   •commons-logging-x.x.x
   •jasperreports-x.x.x
   •itext-x.x.x