java EclipseLink问题编译查询和状态字段路径无法解析为有效类型

Question

当点击我的发票页面时，有时我会出现这个错误。表在数据库中，JPA实体已设置，查询有效

如果我在大部分时间清理并重启服务器，它会神奇地工作，但一旦我更改servlet中的任何内容，它就会在重启服务器后再次抛出此错误

我在互联网上到处搜索，找不到为什么会发生这种情况的答案

如果你有任何想法，请告诉我

Feb 10, 2014 9:49:49 AM org.apache.catalina.core.StandardWrapperValve invoke SEVERE: Servlet.service() for servlet [default] in context with path [##290] threw exception [javax.servlet.ServletException: javax.servlet.jsp.JspException: org.apache.jasper.el.JspELException: /####/###/###/invoices.jsp(16,1) '${ti.teacherInvoiceList}' Error reading 'teacherInvoiceList' on type uk.org.mfsf.dao.TeacherInvoiceLists] with root cause Local Exception Stack: Exception [EclipseLink-0] (Eclipse Persistence Services - 2.6.0.v20140201-f85d864): org.eclipse.persistence.exceptions.JPQLException Exception Description: Problem compiling [SELECT i FROM Invoice i WHERE i.invoice.id = :id ]. [14, 32] The abstract schema type 'Invoice' is unknown. [41, 61] The state field path 'm.invoice.id' cannot be resolved to a valid type. at org.eclipse.persistence.internal.jpa.jpql.HermesParser.buildException(HermesParser.java:155) at org.eclipse.persistence.internal.jpa.jpql.HermesParser.validate(HermesParser.java:347) at org.eclipse.persistence.internal.jpa.jpql.HermesParser.populateQueryImp(HermesParser.java:278) at org.eclipse.persistence.internal.jpa.jpql.HermesParser.buildQuery(HermesParser.java:163) at org.eclipse.persistence.internal.jpa.EJBQueryImpl.buildEJBQLDatabaseQuery(EJBQueryImpl.java:142) at org.eclipse.persistence.internal.jpa.EJBQueryImpl.buildEJBQLDatabaseQuery(EJBQueryImpl.java:116) at org.eclipse.persistence.internal.jpa.EJBQueryImpl.(EJBQueryImpl.java:102) at org.eclipse.persistence.internal.jpa.EJBQueryImpl.(EJBQueryImpl.java:86) at org.eclipse.persistence.internal.jpa.EntityManagerImpl.createQuery(EntityManagerImpl.java:1614) at org.eclipse.persistence.internal.jpa.EntityManagerImpl.createQuery(EntityManagerImpl.java:1636) at uk.org.mfsf.dao.TeacherInvoiceLists.getTeacherInvoiceList(TeacherInvoiceLists.java:33) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at javax.el.BeanELResolver.getValue(BeanELResolver.java:87) at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:67) at org.apache.el.parser.AstValue.getValue(AstValue.java:169) at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:189) at org.apache.jasper.el.JspValueExpression.getValue(JspValueExpression.java:106) at org.apache.jsp.content.page.page_002dtemplates.invoices_jsp._jspx_meth_c_005fset_005f1(invoices_jsp.java:418) at org.apache.jsp.content.page.page_002dtemplates.invoices_jsp._jspx_meth_c_005fif_005f0(invoices_jsp.java:392) at org.apache.jsp.content.page.page_002dtemplates.invoices_jsp._jspService(invoices_jsp.java:103) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:433) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:333) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684) at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:593) at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:530) at org.apache.taglibs.standard.tag.common.core.ImportSupport.acquireString(ImportSupport.java:314) at org.apache.taglibs.standard.tag.common.core.ImportSupport.doEndTag(ImportSupport.java:171) at org.apache.jsp.content.page.index_jsp._jspx_meth_c_005fimport_005f0(index_jsp.java:229) at org.apache.jsp.content.page.index_jsp._jspx_meth_c_005fwhen_005f0(index_jsp.java:174) at org.apache.jsp.content.page.index_jsp._jspService(index_jsp.java:98) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:433) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:333) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176) at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145) at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:381) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:471) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:402) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:329) at org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:213) at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:171) at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145) at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:381) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:405) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:964) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:515) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:304) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source)