ksql报错了

yant

2019-01-22 11:23:06 excute stream action, params:{"accept":"application/json","action":"getDriver","actionFlag":"__action_0__","activity":"listActivity","contentType":"json","executeContext":"","executor":"","parameters":{"CarNo":"111"},"process":"/SPICSD/COMP/process/UseCar/useCarProcess"}
java.lang.reflect.InvocationTargetException
        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 com.justep.system.action.Engine.invokeActions(Native Method)
        at com.justep.system.action.Engine.invokeActions(Unknown Source)
        at com.justep.business.server.BusinessServer.doAction(Unknown Source)
        at com.justep.business.server.BusinessServer.doExcute(Unknown Source)
        at com.justep.business.server.BusinessServer.excute(Unknown Source)
        at com.justep.business.server.BusinessServer.excute(Unknown Source)
        at com.justep.business.server.BusinessServerServlet.execService(Unknown Source)
        at com.justep.business.server.BusinessServerServlet.service(Unknown Source)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
        at com.justep.x.bs.BusinessServerServlet.service(Unknown Source)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:606)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
        at java.lang.Thread.run(Thread.java:745)
Caused by: com.justep.exception.BusinessException: 编码: JUSTEP150210; 提示: 执行KSQL出错, KSQL: select DriverName from  CarConfig t where t.CarNo ='111'
--> sql:
--> binds: []
        at com.justep.exception.BusinessException.create(Unknown Source)
        at com.justep.system.data.impl.TableUtilsImplement.ksqlSelect(Unknown Source)
        at com.justep.system.data.impl.TableUtilsImplement.ksqlSelect(Unknown Source)
        at com.justep.system.data.impl.TableUtilsImplement.ksqlSelect(Unknown Source)
        at com.justep.system.data.KSQL.select(Unknown Source)
        at COMP.getDriver(COMP.java:284)
        ... 27 more
Caused by: java.lang.NullPointerException
        at com.justep.system.ksql.visitor.QueryVisitor.createInfo(Unknown Source)
        at com.justep.system.ksql.visitor.QueryVisitor.visit(Unknown Source)
        at com.justep.system.ksql.node.SelectListNode.accept(Unknown Source)
        at com.justep.system.ksql.visitor.SQLVisitor.visitChildren(Unknown Source)
        at com.justep.system.ksql.visitor.SQLVisitor.visit(Unknown Source)
        at com.justep.system.ksql.node.SelectSentenceNode.accept(Unknown Source)
        at com.justep.system.ksql.visitor.SQLVisitor.visitChildren(Unknown Source)
        at com.justep.system.ksql.visitor.QueryVisitor.visit(Unknown Source)
        at com.justep.system.ksql.node.QuerySentence.accept(Unknown Source)
        ... 32 more

yant

select DriverName from  CarConfig t where t.CarNo ='111'     要加别名   t.DriverName,找了好久原因