在JPQL查询中使用数组

Question

如何在JPQL查询中使用数组列表？ 我想要这样的事情：我正在传递这个

private static final String[] MASKS = {"30109", "30111"};

成

public List<Account> findAccount(String[] Masks){
StringBuilder sb = new StringBuilder("from AccountTable a where SUBSTRING(a.Account,1,5) in :Masks ");
Query q = em.createQuery(sb.toString(), AccountTable.class)
                .setParameter("Masks",Masks);
}

目前，错误是

Encountered array-valued parameter binding, but was expecting [java.lang.String (n/a)]; nested exception is java.lang.IllegalArgumentException: Encountered array-valued parameter binding, but was expecting [java.lang.String (n/a)]

Answer 1

阅读这个网站似乎是可能的，但你的数组必须是一个Collection ，可能是这样的：

public List<Account> findAccount(String[] Masks){
    StringBuilder sb = new StringBuilder("from AccountTable a where SUBSTRING(a.Account,1,5) in :Masks ");
    Query q = em.createQuery(sb.toString(), AccountTable.class)
                .setParameter("Masks", Arrays.asList(MASKS));
}

应该帮助你。