无法创建 jasperresponse

Question

我在 windows 中使用 netbeans 8.0.2。

当在 netbeans 中执行我的程序以创建 jasperreport 时，执行抛出此错误：

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) at 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) at 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) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351) at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1707) at 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) at 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) at 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) at PckEtiGotta.PrintEngineModel.imprimirVectorEtiquetes(PrintEngineModel.java:832) at PckEtiGotta.TreballadorSwing.doInBackground(TreballadorSwing.java:193) at PckEtiGotta.TreballadorSwing.doInBackground(TreballadorSwing.java:16) at javax.swing.SwingWorker.call(SwingWorker.java:295) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at javax.swing.SwingWorker.run(SwingWorker.java:334) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)

我的代码比较长，但是我没有复制所有代码，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());}

对不起我的英语。

Answer 1

我解决了这个问题，我为其他有同样问题的用户解释解决方案。

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

-将此文件复制到 "C:\Program files\java\jre1.x.x\lib\ext" 和 "C:\Program files\java\jdk1.x.x\jre\lib\ext":

   •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

无法创建 jasperresponse

Can't create jasperresponse

java

jasper-reports