Java 为Liferay输入日期的自定义查询
我在使用日期输入执行自定义查询时遇到问题。 以下是我的sql:Java 为Liferay输入日期的自定义查询,java,sql,database,liferay,Java,Sql,Database,Liferay,我在使用日期输入执行自定义查询时遇到问题。 以下是我的sql: <sql id="MyEntityFinder.findByIns"> <![CDATA[ SELECT {EX_MyEntity.*} FROM EX_MyEntity WHERE (EX_MyEntity.myDate >= ? AND EX_MyEntity.myDate <= ?) ]]> </sql>
<sql
id="MyEntityFinder.findByIns">
<![CDATA[
SELECT {EX_MyEntity.*}
FROM EX_MyEntity
WHERE
(EX_MyEntity.myDate >= ? AND EX_MyEntity.myDate <= ?)
]]>
</sql>
= ? 和exu MyEntity.myDate
这是我的发现者MyEntityFinderImpl:
public class MyEntityFinderImpl extends BasePersistenceImpl<MyEntity> implements MyEntityFinder{
public static final String FIND_BY_INS = "MyEntityFinder.findByIns";
public List<MyEntity> findByIns(Date from, Date to, int begin, int end) throws SystemException{
Session session = null;
try {
session = openSession();
String sql = CustomSQLUtil.get(FIND_BY_INS);
SQLQuery q = session.createSQLQuery(sql);
q.setCacheable(false);
q.addEntity("EX_MyEntity", MyEntityImpl.class);
QueryPos qPos = QueryPos.getInstance(q);
qPos.add("%"+from+"%");
qPos.add("%"+to+"%");
return (List<MyEntity>) QueryUtil.list(q, getDialect(), begin, end);
} catch (Exception e) {
throw new SystemException(e);
} finally {
closeSession(session);
}
}
公共类MyEntityFinderImpl扩展BasePersistenceImpl实现MyEntityFinder{
公共静态最终字符串FIND_BY_INS=“MyEntityFinder.findByIns”;
公共列表findByIns(日期从、日期到、整数开始、整数结束)引发系统异常{
会话=空;
试一试{
session=openSession();
字符串sql=CustomSQLUtil.get(通过\u-INS查找\u);
SQLQuery q=session.createSQLQuery(sql);
q、 可设置缓存(假);
q、 附录(“EX_MyEntity”,MyEntityImpl.class);
QueryPos qPos=QueryPos.getInstance(q);
qPos.add(“%”+from+“%”);
qPos.添加(“%”到+“%”);
return(List)QueryUtil.List(q,getdialogue(),begin,end);
}捕获(例外e){
抛出新的系统异常(e);
}最后{
闭门会议(会议);
}
}
}
下面是我如何从jsp页面调用它:
Calendar aMonthAgo = Calendar.getInstance();
aMonthAgo.set(Calendar.MONTH, aMonthAgo.get(Calendar.MONTH) - 1);
Calendar now = Calendar.getInstance();
List<MyEntity> monthly = MyEntityLocalServiceUtil.findByIns(
new java.sql.Date(aMonthAgo.getTimeInMillis()),
new java.sql.Date(now.getTimeInMillis()), 0,
MyEntityLocalServiceUtil.getMyEntitysCount());
Calendar aMonthAgo=Calendar.getInstance();
aMonthAgo.set(Calendar.MONTH,aMonthAgo.get(Calendar.MONTH)-1);
Calendar now=Calendar.getInstance();
List monthly=MyEntityLocalServiceUtil.findByIns(
新的java.sql.Date(aMonthAgo.getTimeInMillis()),
新java.sql.Date(now.getTimeInMillis()),0,
MyEntityLocalServiceUtil.getMyEntityScont());
在尝试执行查询时,我得到了“java.sql.SQLException:data exception:invalid datetime format”,但我不明白原因。请尝试以下操作: 在jsp中:
Timestamp Timestamp=新的时间戳(aMonthAgo.getTimeInMillis())代码>
在查找器中:
qPos.add(时间戳)代码>
此外,在sql查询中,我将在以下两种情况之间使用:
日期(EX_MyEntity.myDate)介于?还有?
非常感谢您的帮助!