Question

我正在尝试使用hibernate在oracle中执行存储过程。当我从hibernate调用过程时，进程被调用但是之后它显示异常

ERROR: Cannot perform fetch on a PLSQL statement: next

这是我在oracle中的存储过程：

create or replace PROCEDURE GETREGISTRATIONRECORDS 
(
  REGID IN NUMBER 
) 
AS 
MY_CURSER SYS_REFCURSOR;
BEGIN
OPEN MY_CURSER FOR
SELECT * FROM REGISTRATION
WHERE ID = REGID;
END GETREGISTRATIONRECORDS;

在hibernate中我调用了这个过程，如下所示：

Registration.java

@NamedNativeQueries({
@NamedNativeQuery(
        name="callRegistrationProcedure",
        query="call GETREGISTRATIONRECORDS(:regID)",
        resultClass=Registration.class)
})
@Entity
public class Registration { 
......
}

并在 RegistrationDao.java 我有以下功能

@SuppressWarnings("unchecked")
public List<Registration> getFirstName(int id)
{

    Query query = SQLFactory.getSession().getNamedQuery("callRegistrationProcedure").setParameter("regID", id);
    List<Registration> result = query.list();
    for(int i=0; i<result.size(); i++){
        Registration stock = (Registration)result.get(i);
        System.out.println(stock.getFirstName());
        System.out.println(stock.getLastName());

    }

    return result;
}

但是当我执行我的应用程序时，我得到以下错误：

Hibernate: call GETREGISTRATIONRECORDS(?)
Apr 09, 2015 10:45:24 AM org.hibernate.engine.jdbc.spi.SqlExceptionHelper   logExceptions
WARN: SQL Error: 17166, SQLState: null
Apr 09, 2015 10:45:24 AM org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions
ERROR: Cannot perform fetch on a PLSQL statement: next
Apr 09, 2015 10:45:24 AM org.apache.catalina.core.StandardWrapperValve invoke 
SEVERE: Servlet.service() for servlet [dispatcher] in context with path [/SpringHibernateWebApplication] threw exception [Request processing failed; nested exception is org.hibernate.exception.GenericJDBCException: Cannot perform fetch on a PLSQL statement: next] with root cause
java.sql.SQLException: Cannot perform fetch on a PLSQL statement: next
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146)
at oracle.jdbc.driver.OracleResultSetImpl.next(OracleResultSetImpl.java:192)

我已经浏览了这些链接，但我找不到解决方案

java.sql.SQLException: Cannot perform fetch on a PLSQL statement: next. In Hibernate

Hibernate 4.2.18 Stored procedure call on oracle 11g with ojdbc6(11.2.0.2) gives Cannot perform fetch on a PLSQL statement: next

所以请帮我解决问题。

Answer 1

我得到了解决方案。以下代码中所做的更改

oracle中的存储过程：

create or replace PROCEDURE GETREGISTRATIONRECORDS 
(
   MY_CURSER OUT SYS_REFCURSOR,
   REGID IN NUMBER 
) AS 
BEGIN
OPEN MY_CURSER FOR
SELECT * FROM REGISTRATION
WHERE ID=REGID;
END GETREGISTRATIONRECORDS;

Registration.java

中的

@NamedNativeQuery(
    name="callRegistrationProcedure",
    query="call GETREGISTRATIONRECORDS(?,:regID)",
    callable=true,
    resultClass=Registration.class)
@Entity
public class Registration { 
......
}

无需对RegistrationDao.java进行任何更改我得到了所需的output.Records从oracle数据库中成功获取。

java.sql.SQLException：无法对PLSQL语句执行fetch：next

1 个答案: