SSH框架问题——node to traverse cannot be null!报错问题

Struts Problem Report

Struts has detected an unhandled exception:

Messages:

node to traverse cannot be null!

File: org/hibernate/hql/ast/util/NodeTraverser.java

Line number: 55

Stacktraces

java.lang.IllegalArgumentException: node to traverse cannot be null!

org.hibernate.hql.ast.util.NodeTraverser.traverseDepthFirst(NodeTraverser.java:55)

org.hibernate.hql.ast.QueryTranslatorImpl.parse(QueryTranslatorImpl.java:280)

org.hibernate.hql.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:182)

org.hibernate.hql.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:136)

org.hibernate.engine.query.HQLQueryPlan.(HQLQueryPlan.java:101)

org.hibernate.engine.query.HQLQueryPlan.(HQLQueryPlan.java:80)

org.hibernate.engine.query.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:94)

org.hibernate.impl.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:156)

org.hibernate.impl.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:135)

org.hibernate.impl.SessionImpl.createQuery(SessionImpl.java:1651)

…………………………………………………………

这个错误一般是sql、hql语句有问题，比如关键字书写问题，语法问题等，本人犯了一个低级错误，使用update的时候，给多个属性赋值需要使用“，”（逗号）隔开。