Hibernate异常：Unable to locate appropriate constructor on class

时间 2019-11-24

标签 hibernate 异常 unable locate appropriate constructor class 栏目 Hibernate 繁體版

原文原文链接

　　异常信息：org.hibernate.hql.ast.QuerySyntaxException: Unable to locate appropriate constructor on classjava

org.hibernate.hql.ast.QuerySyntaxException: Unable to locate appropriate constructor on class [com.vrv.cems.assets.domain.Device] [select new Device(d.id,d.diskSize,d.diskSerial,d.registerTime) from com.vrv.cems.assets.domain.Device as d where d.matherBoard=:matherBoard] at org.hibernate.hql.ast.QuerySyntaxException.convert(QuerySyntaxException.java:54) at org.hibernate.hql.ast.QuerySyntaxException.convert(QuerySyntaxException.java:47) at org.hibernate.hql.ast.ErrorCounter.throwQueryException(ErrorCounter.java:82) at org.hibernate.hql.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:263) at org.hibernate.hql.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:187) at org.hibernate.hql.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:138) at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:101) at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:80)

　　缘由：Device类里面没有对应的构造方法app

　　注意：构造方法的参数都得对应才行。此外参数不能是Timestamp类型，有Timestamp类型的参数，也会报此错。dom

　　解决方案：加上对应的构造参数便可。this

public Device(String id,Integer diskSize ,String diskSerial) { super(); this.id = id; this.diskSize = diskSize; this.diskSerial = diskSerial; }

public List<Device> queryByMatherBoardId(String matherBoardId) { String hql = "select new Device(d.id,d.diskSize,d.diskSerial) from Device as d where d.matherBoard=:matherBoard"; return this.getSession().createQuery(hql) .setParameter("matherBoard", matherBoardId).list(); }