Exception in thread "main" java.lang.NoSuchMethodError: org.hibernate.hql.antlr.HqlBaseParser.recover(Lantlr/RecognitionException;Lantlr/collections/impl/BitSet;)V at org.hibernate.hql.antlr.HqlBaseParser.alias(HqlBaseParser.java:2070) at org.hibernate.hql.antlr.HqlBaseParser.asAlias(HqlBaseParser.java:684)
	at org.hibernate.hql.antlr.HqlBaseParser.fromClassOrOuterQueryPath(HqlBaseParser.java:1887)
	at org.hibernate.hql.antlr.HqlBaseParser.fromRange(HqlBaseParser.java:1564)
	at org.hibernate.hql.antlr.HqlBaseParser.fromClause(HqlBaseParser.java:1408)
	at org.hibernate.hql.antlr.HqlBaseParser.selectFrom(HqlBaseParser.java:1130)
	at org.hibernate.hql.antlr.HqlBaseParser.queryRule(HqlBaseParser.java:702)
	at org.hibernate.hql.antlr.HqlBaseParser.selectStatement(HqlBaseParser.java:296)
	at org.hibernate.hql.antlr.HqlBaseParser.statement(HqlBaseParser.java:159)
	at org.hibernate.hql.ast.QueryTranslatorImpl.parse(QueryTranslatorImpl.java:274)
	at org.hibernate.hql.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:182)
	at org.hibernate.hql.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:136)
	at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:101)
	at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:80)
	at org.hibernate.engine.query.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:94)
	at org.hibernate.impl.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:156)
	at org.hibernate.impl.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:135)
	at org.hibernate.impl.SessionImpl.createQuery(SessionImpl.java:1651)

原因：hibernate3与struts2中分别包含了  antlr-2.7.2.jar和anltr-2.7.6.jar。 是版本冲突报错。将struts2中的anltr-2.7.2.jar包删除即可，问题解决 。