请问springboot+hibernate的项目，怎么通过hql调用存储过程和存储函数（mysql）。

Question

存储过程代码：

CREATE PROCEDURE getallid()
BEGIN
select sum(id) from user;
END

Java DAO层代码：

    @Override
    public int findAllId() {
        Query query = this.entityManager.createQuery("call getallid()");
        int i = (int)query.getSingleResult();
        return i;
    }

报错原因：
org.hibernate.hql.internal.ast.QuerySyntaxException: unexpected token: call near line 1, column 1 [call getallid()]

at org.hibernate.hql.internal.ast.QuerySyntaxException.convert(QuerySyntaxException.java:74) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
at org.hibernate.hql.internal.ast.ErrorCounter.throwQueryException(ErrorCounter.java:91) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.parse(QueryTranslatorImpl.java:291) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:186) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:141) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:115) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:77) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
at org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:153) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
at org.hibernate.internal.AbstractSharedSessionContract.getQueryPlan(AbstractSharedSessionContract.java:553) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:662) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
at org.hibernate.internal.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:23) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_144]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_144]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_144]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_144]

Answer 1

用session.createSQLQuery

       Query query = session.createSQLQuery(
            "CALL getallid()")
            .addEntity(Long.class);
                    
       long yourid= query.getSingleResult();

参考
http://www.mkyong.com/hiberna...

Answer 2

经过查询资料，使用createNativeQuery()方法是可行的。

    @Override
    public Integer findAllId() {
        Query query = this.entityManager.createNativeQuery("call getallid()");
        int i = Integer.parseInt(query.getSingleResult().toString());
        return i;
    }