每当我尝试将列表设置为在 IN 表达式中使用的参数时,都会出现非法参数异常。互联网上的各种帖子似乎表明这是可能的,但它肯定不适合我。我正在使用带有 Toplink 的 Glassfish V2.1。
有没有其他人能够让这个工作,如果可以,如何?
这里有一些示例代码:
List<String> logins = em.createQuery("SELECT a.accountManager.loginName " +
"FROM Account a " +
"WHERE a.id IN (:ids)")
.setParameter("ids",Arrays.asList(new Long(1000100), new Long(1000110)))
.getResultList();
以及堆栈跟踪的相关部分:
java.lang.IllegalArgumentException: You have attempted to set a value of type class java.util.Arrays$ArrayList for parameter accountIds with expected type of class java.lang.Long from query string SELECT a.accountManager.loginName FROM Account a WHERE a.id IN (:accountIds). at oracle.toplink.essentials.internal.ejb.cmp3.base.EJBQueryImpl.setParameterInternal(EJBQueryImpl.java:663) at oracle.toplink.essentials.internal.ejb.cmp3.EJBQueryImpl.setParameter(EJBQueryImpl.java:202) at com.corenap.newtDAO.ContactDaoBean.getNotificationAddresses(ContactDaoBean.java:437) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.sun.enterprise.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1011) at com.sun.enterprise.security.SecurityUtil.invoke(SecurityUtil.java:175) at com.sun.ejb.containers.BaseContainer.invokeTargetBeanMethod(BaseContainer.java:2920) at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:4011) at com.sun.ejb.containers.EJBObjectInvocationHandler.invoke(EJBObjectInvocationHandler.java:203) ... 67 more
最佳答案
您的 JPQL 无效,请去掉括号
List<String> logins = em.createQuery("SELECT a.accountManager.loginName " +
"FROM Account a " +
"WHERE a.id IN :ids")
.setParameter("ids",Arrays.asList(new Long(1000100), new Long(1000110)))
.getResultList();
关于java - 将参数设置为 IN 表达式的列表,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/1557085/