[英]Can't getApplicationContext. because java.lang.NullPointerException
[英]java.lang.NullPointerException because I don't have permission to access the table
我在Java EE中有一个项目。 当我从数据库访问表时,它返回错误,这是HQL查询:
select b from Blacklist b inner join fetch b.users u where b.type ilike :type order by b.date desc
这是错误消息:
18:18:10,694 ERROR [STDERR] java.lang.NullPointerException
18:18:10,694 ERROR [STDERR] at org.hibernate.engine.query.QueryPlanCache$HQLQueryPlanKey.<init>(QueryPlanCache.java:193)
18:18:10,694 ERROR [STDERR] at org.hibernate.engine.query.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:87)
18:18:10,694 ERROR [STDERR] at org.hibernate.impl.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:156)
18:18:10,694 ERROR [STDERR] at org.hibernate.impl.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:135)
18:18:10,694 ERROR [STDERR] at org.hibernate.impl.SessionImpl.createQuery(SessionImpl.java:1650)
18:18:10,694 ERROR [STDERR] at org.hibernate.ejb.AbstractEntityManagerImpl.createQuery(AbstractEntityManagerImpl.java:93)
18:18:10,694 ERROR [STDERR] at org.jboss.jpa.tx.TransactionScopedEntityManager.createQuery(TransactionScopedEntityManager.java:139)
18:18:10,694 ERROR [STDERR] at doku.edp.trasactions.Eds2UtilityBean.getFieldDataFromBlacklist(Eds2UtilityBean.java:325)
18:18:10,694 ERROR [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
18:18:10,695 ERROR [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
18:18:10,695 ERROR [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
18:18:10,695 ERROR [STDERR] at java.lang.reflect.Method.invoke(Method.java:597)
18:18:10,695 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeTarget(MethodInvocation.java:122)
18:18:10,695 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:111)
18:18:10,695 ERROR [STDERR] at org.jboss.ejb3.EJBContainerInvocationWrapper.invokeNext(EJBContainerInvocationWrapper.java:69)
18:18:10,695 ERROR [STDERR] at org.jboss.ejb3.interceptors.aop.InterceptorSequencer.invoke(InterceptorSequencer.java:73)
18:18:10,695 ERROR [STDERR] at org.jboss.ejb3.interceptors.aop.InterceptorSequencer.aroundInvoke(InterceptorSequencer.java:59)
18:18:10,695 ERROR [STDERR] at sun.reflect.GeneratedMethodAccessor522.invoke(Unknown Source)
18:18:10,695 ERROR [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
18:18:10,695 ERROR [STDERR] at java.lang.reflect.Method.invoke(Method.java:597)
18:18:10,695 ERROR [STDERR] at org.jboss.aop.advice.PerJoinpointAdvice.invoke(PerJoinpointAdvice.java:174)
18:18:10,695 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
18:18:10,695 ERROR [STDERR] at org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor.fillMethod(InvocationContextInterceptor.java:72)
18:18:10,695 ERROR [STDERR] at org.jboss.aop.advice.org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor_z_fillMethod_405857447.invoke(InvocationContextInterceptor_z_fillMethod_405857447.java)
18:18:10,695 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
18:18:10,695 ERROR [STDERR] at org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor.setup(InvocationContextInterceptor.java:88)
18:18:10,695 ERROR [STDERR] at org.jboss.aop.advice.org.jboss.ejb3.interceptors.aop.InvocationContextInterceptor_z_setup_405857447.invoke(InvocationContextInterceptor_z_setup_405857447.java)
18:18:10,695 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
18:18:10,695 ERROR [STDERR] at org.jboss.ejb3.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:62)
我在对表执行SELECT
查询时看到了Postgres DB,然后收到警告:
关系白名单拒绝了渗透。
Postgres上的警告是否是导致此错误的原因?
仅假设您尚未发布任何Java代码,但看起来像您的NullPointer(可能是不包含任何结果的ResultSet)是因为您没有正确的权限来读写关系“白名单”。 我将检查您用于登录数据库的用户名和jdbc连接所使用的用户名。
如果您发布Java代码,我们可以看到NullPointer是由于您试图处理的结果集为空还是其他原因。
我已经回答的第一个问题很抱歉,如果它罗word的话。
从堆栈中,我们可以说您创建的查询出了点问题。 可以肯定的是,我会添加as
并select
删除ilike
和select
子句。
from Blacklist as b inner join fetch b.users as u where b.type like :type order by b.date desc
ilike运算符确实存在于Expression中 ,但是我不了解HQL尝试执行有关查询的操作。
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