Question

ireport + jsp 内存溢出 找不到原因

javax.servlet.ServletException: Filter execution threw an exception
org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:112
root cause
java.lang.OutOfMemoryError: PermGen space
com.lowagie.text.pdf.PdfWriter.<clinit>(Unknown Source)
net.sf.jasperreports.engine.export.JRPdfExporter.exportReportToStream(JRPdfExporter.java:438)
net.sf.jasperreports.engine.export.JRPdfExporter.exportReport(JRPdfExporter.java:362)
org.apache.struts2.views.jasperreports.JasperReportsResult.exportReportToBytes(JasperReportsResult.java:488)
org.apache.struts2.views.jasperreports.JasperReportsResult.doExecute(JasperReportsResult.java:393)
org.apache.struts2.dispatcher.StrutsResultSupport.execute(StrutsResultSupport.java:186)
com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:362)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:266)
com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:165)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:252)
org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:122)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept

Answer 1

java.lang.OutOfMemoryError: PermGen space

重点看上句，和用什么技术无关，需要调整PermGen区域大小

Answer 2

java.lang.OutOfMemoryError: PermGen space 重新调整一下区域就OK啦