Question

我会避免在JasperReport服务器中出现Out of Memory异常。拜托，帮助我。

编辑29/08/2015 我在Ubuntu 14.04，java 8上使用JasperReport服务器6.1 相同的结果---详情以下

我写了一个java代码，用于从我的JasperReport Server实例下载（存储在本地文件中）多个pdf报告。它适用于大约600个报告，之后产生错误500。在JasperServer日志文件中，我看到内存不足异常。

我的代码可能有错误吗？不这么认为。相反，我认为jasperReport服务器中存在内存泄漏。

在这里你可以看到我的java代码（类ga.system.jasperserver.ReportExtractor）

    for (ReportParameters aReportParams : listOfReportParameters)
    {
        String filename = "report-"+aReportParams.getParameter1()+ ".PDF";
        jasperreport_url = combineParamsIntoJasperserverUrl(aReportParams);
        URL website = new URL(jasperreport_url);
        ReadableByteChannel rbc = Channels.newChannel(website.openStream());
        FileOutputStream fos = new FileOutputStream(destPath+"/" +filename);
        fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
        fos.close();
        rbc.close();
    }

在这里你可以看到我得到的异常片段

java.io.IOException：服务器返回HTTP响应代码：500为URL：http://myjasperserverurl/jasperserver/rest_v2/reports/TestDir/TestReport.pdf?j_username=xxx&j_password=xxx&PARAMETER1=9734&PARAMETER2=0&PARAMETER3=815G21 at sun.net.www.protocol.http.HttpURLConnection.getInputStream0（Unknown Source） at sun.net.www.protocol.http.HttpURLConnection.getInputStream（Unknown Source）在java.net.URL.openStream（未知来源） at ga.system.jasperserver.ReportExtractor.extract（ReportExtractor.java:102） ... ... ...

在这里，您可以看到JasperReport Server（catalina.out片段）中的日志

 2015-08-17 18:16:17,091 ERROR RunReportServiceImpl,pool-5-thread-66:511 - caught Throwable exception: Java heap space
java.lang.OutOfMemoryError: Java heap space
        at java.util.Arrays.copyOf(Arrays.java:2271)
        at java.io.ByteArrayOutputStream.grow(ByteArrayOutputStream.java:113)
        at java.io.ByteArrayOutputStream.ensureCapacity(ByteArrayOutputStream.java:93)
        at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:140)
        at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
        at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
        at com.lowagie.text.pdf.OutputStreamCounter.flush(Unknown Source)
        at com.lowagie.text.DocWriter.close(Unknown Source)
        at com.lowagie.text.pdf.PdfWriter.close(Unknown Source)
        at com.lowagie.text.pdf.PdfDocument.close(Unknown Source)
        at com.lowagie.text.Document.close(Unknown Source)
        at net.sf.jasperreports.engine.export.JRPdfExporter.exportReportToStream(JRPdfExporter.java:815)
        at net.sf.jasperreports.engine.export.JRPdfExporter.exportReport(JRPdfExporter.java:513)
        at com.jaspersoft.jasperserver.api.engine.jasperreports.service.impl.EngineServiceImpl.exportToPdf(EngineServiceImpl.java:559)
        at com.jaspersoft.jasperserver.remote.exporters.PdfExporter.exportReport(PdfExporter.java:98)
        at com.jaspersoft.jasperserver.remote.services.impl.ReportExecutorImpl.exportReport(ReportExecutorImpl.java:177)
        at com.jaspersoft.jasperserver.remote.services.impl.RunReportServiceImpl.generateReportOutput(RunReportServiceImpl.java:478)
        at com.jaspersoft.jasperserver.remote.services.impl.RunReportServiceImpl.executeExport(RunReportServiceImpl.java:378)
        at com.jaspersoft.jasperserver.remote.services.impl.RunReportServiceImpl$2.run(RunReportServiceImpl.java:343)
        at com.jaspersoft.jasperserver.api.logging.util.LoggableExecutorService$1.run(LoggableExecutorService.java:59)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:724)

我的服务器中使用的Virtualizer（applicationContext.xml片段）

<bean id="fileVirtualizerFactory" class="com.jaspersoft.jasperserver.api.engine.common.service.impl.FileVirtualizerFactory">
    <property name="maxSize" value="3000"></property>
    <property name="directory" value="${java.io.tmpdir}"></property>
</bean>

我在Ubuntu 14.04上使用JasperReport服务器5.6.0（可靠），java 8

编辑29/08/2015 在Ubuntu 14.04，java 8上使用JasperReport服务器6.1的新测试同样的结果，新安装的服务器，在生成580 pdf后服务器挂起显示此消息（读取最后一行：＆＃34;引起：java.lang.OutOfMemoryError：Java堆空间＆＃34;）：

org.hibernate.exception.GenericJDBCException：无法初始化懒惰的属性： [com.jaspersoft.jasperserver.api.metadata.common.service.impl.hibernate.persistent.RepoFileResource＃8448] 在 org.hibernate.exception.SQLStateConverter.handledNonSpecificException（SQLStateConverter.java:126）在 org.hibernate.exception.SQLStateConverter.convert（SQLStateConverter.java:114）在 org.hibernate.exception.JDBCExceptionHelper.convert（JDBCExceptionHelper.java:66）在 org.hibernate.persister.entity.AbstractEntityPersister.initializeLazyPropertiesFromDatastore（AbstractEntityPersister.java:831）在 org.hibernate.persister.entity.AbstractEntityPersister.initializeLazyProperty（AbstractEntityPersister.java:771）在 org.hibernate.intercept.AbstractFieldInterceptor.intercept（AbstractFieldInterceptor.java:97）在 org.hibernate.intercept.cglib.FieldInterceptorImpl.readObject（FieldInterceptorImpl.java:98）在 com.jaspersoft.jasperserver.api.metadata.common.service.impl.hibernate.persistent.RepoFileResource。$ cglib_read_data（未知来源）at com.jaspersoft.jasperserver.api.metadata.common.service.impl.hibernate.persistent.RepoFileResource.getData（未知来源）at com.jaspersoft.jasperserver.api.metadata.common.service.impl.hibernate.persistent.RepoFileResource.copyData（未知来源）at com.jaspersoft.jasperserver.api.metadata.common.service.impl.hibernate.HibernateRepositoryServiceImpl $ 22.execute（HibernateRepositoryServiceImpl.java:1420）在 com.jaspersoft.jasperserver.api.metadata.common.service.impl.HibernateDaoImpl.executeCallback（HibernateDaoImpl.java:56）在 com.jaspersoft.jasperserver.api.metadata.common.service.impl.hibernate.HibernateRepositoryServiceImpl.getResourceData（HibernateRepositoryServiceImpl.java:1414）在sun.reflect.GeneratedMethodAccessor337.invoke（未知来源）at sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）在java.lang.reflect.Method.invoke（Method.java:606）at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection（AopUtils.java:319）在 org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint（ReflectiveMethodInvocation.java:183）在 org.springframework.aop.framework.ReflectiveMethodInvocation.proceed（ReflectiveMethodInvocation.java:150）在 org.springframework.transaction.interceptor.TransactionInterceptor.invoke（TransactionInterceptor.java:110）在 org.springframework.aop.framework.ReflectiveMethodInvocation.proceed（ReflectiveMethodInvocation.java:172）在 org.springframework.aop.framework.JdkDynamicAopProxy.invoke（JdkDynamicAopProxy.java:202）在com.sun.proxy。$ Proxy32.getResourceData（未知来源）at sun.reflect.GeneratedMethodAccessor337.invoke（未知来源）at sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）在java.lang.reflect.Method.invoke（Method.java:606）at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection（AopUtils.java:319）在 org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint（ReflectiveMethodInvocation.java:183）在 org.springframework.aop.framework.ReflectiveMethodInvocation.proceed（ReflectiveMethodInvocation.java:150）在 com.jaspersoft.jasperserver.api.metadata.user.service.impl.PermissionsPrefetcher.invoke（PermissionsPrefetcher.java:79）在 org.springframework.aop.framework.ReflectiveMethodInvocation.proceed（ReflectiveMethodInvocation.java:172）在 com.jaspersoft.jasperserver.api.metadata.user.service.impl.PermissionsPrefetcher.invoke（PermissionsPrefetcher.java:79）在 org.springframework.aop.framework.ReflectiveMethodInvocation.proceed（ReflectiveMethodInvocation.java:172）在 org.springframework.security.intercept.method.aopalliance.MethodSecurityInterceptor.invoke（MethodSecurityInterceptor.java:66）在 org.springframework.aop.framework.ReflectiveMethodInvocation.proceed（ReflectiveMethodInvocation.java:172）在 org.springframework.security.intercept.method.aopalliance.MethodSecurityInterceptor.invoke（MethodSecurityInterceptor.java:66）在 org.springframework.aop.framework.ReflectiveMethodInvocation.proceed（ReflectiveMethodInvocation.java:172）在 org.springframework.aop.framework.JdkDynamicAopProxy.invoke（JdkDynamicAopProxy.java:202）在com.sun.proxy。$ Proxy38.getResourceData（未知来源）at com.jaspersoft.jasperserver.api.engine.jasperreports.util.repo.RepositoryConnection.getInputStream（RepositoryConnection.java:114）在java.net.URL.openStream（URL.java:1037）at net.sf.jasperreports.engine.util.JRLoader.getInputStream（JRLoader.java:298）在 net.sf.jasperreports.repo.DefaultRepositoryService.getInputStream（DefaultRepositoryService.java:100）在 net.sf.jasperreports.repo.InputStreamPersistenceService.load（InputStreamPersistenceService.java:48）在 net.sf.jasperreports.repo.DefaultRepositoryService.getResource（DefaultRepositoryService.java:155）在 net.sf.jasperreports.repo.RepositoryUtil.findInputStream（RepositoryUtil.java:176）在 net.sf.jasperreports.repo.RepositoryUtil.getBytesFromLocation（RepositoryUtil.java:192）在 net.sf.jasperreports.engine.RenderableUtil.getRenderable（RenderableUtil.java:121）在 net.sf.jasperreports.engine.fill.JRFillImage.evaluateImage（JRFillImage.java:536）在 net.sf.jasperreports.engine.fill.JRFillImage.evaluate（JRFillImage.java:472）在 net.sf.jasperreports.engine.fill.JRFillElementContainer.evaluate（JRFillElementContainer.java:259）在 net.sf.jasperreports.engine.fill.JRFillBand.evaluate（JRFillBand.java:456）在 net.sf.jasperreports.engine.fill.JRVerticalFiller.fillBackground（JRVerticalFiller.java:1846）在 net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReportStart（JRVerticalFiller.java:288）在 net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport（JRVerticalFiller.java:152）在 net.sf.jasperreports.engine.fill.JRBaseFiller.fill（JRBaseFiller.java:963）在 net.sf.jasperreports.engine.fill.BaseFillHandle $ ReportFiller.run（BaseFillHandle.java:120）在 com.jaspersoft.jasperserver.api.engine.jasperreports.service.impl.EngineServiceImpl $ SynchronousExecutor.execute（EngineServiceImpl.java:886）在 net.sf.jasperreports.engine.fill.BaseFillHandle.startFill（BaseFillHandle.java:165）在 com.jaspersoft.jasperserver.api.engine.jasperreports.service.impl.EngineServiceImpl.fillReport（EngineServiceImpl.java:1804）在 com.jaspersoft.jasperserver.api.engine.jasperreports.service.impl.EngineServiceImpl $ SynchronousReportFiller.fillReport（EngineServiceImpl.java:790）在 com.jaspersoft.jasperserver.api.engine.jasperreports.service.impl.EngineServiceImpl.fillReport（EngineServiceImpl.java:1731）在 com.jaspersoft.jasperserver.api.engine.jasperreports.service.impl.EngineServiceImpl $ ReportFill.runWithDataSource（EngineServiceImpl.java:1086）在 com.jaspersoft.jasperserver.api.engine.jasperreports.service.impl.EngineServiceImpl $ ReportFill.runReport（EngineServiceImpl.java:1015）在 com.jaspersoft.jasperserver.api.engine.jasperreports.service.impl.EngineServiceImpl $ ReportRunnable.run（EngineServiceImpl.java:908）在 com.jaspersoft.jasperserver.api.engine.jasperreports.service.impl.EngineServiceImpl $ SynchronousExecutor.execute（EngineServiceImpl.java:886）在 com.jaspersoft.jasperserver.api.engine.jasperreports.service.impl.EngineServiceImpl.fillReport（EngineServiceImpl.java:607）在 com.jaspersoft.jasperserver.api.engine.jasperreports.service.impl.EngineServiceImpl.executeReportUnitRequest（EngineServiceImpl.java:1937）在 com.jaspersoft.jasperserver.api.engine.jasperreports.domain.impl.ReportUnitRequest.execute（ReportUnitRequest.java:67）在 com.jaspersoft.jasperserver.api.engine.jasperreports.service.impl.EngineServiceImpl.execute（EngineServiceImpl.java:497）在 com.jaspersoft.jasperserver.remote.services.impl.ReportExecutorImpl $ GenericRunReportStrategy.runReport（ReportExecutorImpl.java:225）在 com.jaspersoft.jasperserver.remote.services.impl.ReportExecutorImpl.runReport（ReportExecutorImpl.java:127）在 com.jaspersoft.jasperserver.remote.services.impl.RunReportServiceImpl $ 1.run（RunReportServiceImpl.java:230）在 com.jaspersoft.jasperserver.api.logging.util.LoggableExecutorService $ 1.run（LoggableExecutorService.java:59）在 java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1145）在 java.util.concurrent.ThreadPoolExecutor中的$ Worker.run（ThreadPoolExecutor.java:615）在java.lang.Thread.run（Thread.java:724）引起： org.postgresql.util.PSQLException：精美的memoria scaricando我risultati 德拉查询。在 org.postgresql.core.v3.QueryExecutorImpl.processResults（QueryExecutorImpl.java:1816）在 org.postgresql.core.v3.QueryExecutorImpl.execute（QueryExecutorImpl.java:255）在 org.postgresql.jdbc2.AbstractJdbc2Statement.execute（AbstractJdbc2Statement.java:510）在 org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags（AbstractJdbc2Statement.java:386）在 org.postgresql.jdbc2.AbstractJdbc2Statement.executeQuery（AbstractJdbc2Statement.java:271）at org.apache.tomcat.dbcp.dbcp.DelegatingPreparedStatement.executeQuery（DelegatingPreparedStatement.java:96）在 org.apache.tomcat.dbcp.dbcp.DelegatingPreparedStatement.executeQuery（DelegatingPreparedStatement.java:96）在 org.hibernate.persister.entity.AbstractEntityPersister.initializeLazyPropertiesFromDatastore（AbstractEntityPersister.java:802） ......还有73个引起：java.lang.OutOfMemoryError：Java堆空间

随时询问您需要的详细信息！请帮忙感谢

Answer 1

内存管理是Jasper的常见问题。您希望使用Jasper Virtualizer来减少堆负载。

Answer 2

我遇到了完全相同的问题。大量快速运行的小报告最终消灭了内存。 Eclipse MAT说到GC Root的最短路径是：

Answer 3

最终，这被证明是一个损坏的.jasper文件。重新生成主报表和所有子报表的jasper文件为我解决了问题。

jasperreports在大量报告之后内存不足

3 个答案: