急！！！在线等hibernate级联关系外键为null

2009-09-09 03:04:59 208 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

Hibernate DialectResolutionInfo为null的根源与修复 DialectResolutionInfo是Hibernate启动过程中用于数据库方言推断的核心服务，其为null并非配置项缺失的表象问题，而是StandardServiceRegistry构建失败的深层信号。该服务依赖JdbcEnvironment初始化，而后者又强依赖DataSource和正确注入的hibernate.dialect等元数据。当ServiceRegistry未完成applySettings()与build()流程，或存在版本不兼容（如Spring Boot 3.x与Hibernate 5 阅读详情

hibernate级联关系

如下配置strategy类
private Integer nmId;
private Set<TimesRule> timesRule ;

hbm.xml
<set name="TimesRule" inverse="true" cascade="all" >
<key column="nmStrategyId"/>
<one-to-many class="TimesRule"/>
</set>

timesRule类
private int nmId;
private int nmStrategyId;
private Strategy strategy;

hbm.xml
<many-to-one name="strategy" column="nmStrategyId" cascade="all" />

action类
HttpSession session = request.getSession();
TimesRule timesRule = new TimesRule();
timesRule.setDtEndDay(dtEndDay);
timesRule.setDtStartDay(dtStartDay);
timesRule.setStartTime(startTime);
timesRule.setEndTime(endTime);
timesRule.setBtIsInclude(btIsInclude);
timesRule.setTiType(tiType);
if (session.getAttribute("strategy") == null) {
strategy = new Strategy();
strategy.getTimesRule().add(timesRule);
session.setAttribute("strategy", strategy);

} else {
strategy = (Strategy) session.getAttribute("strategy");
strategy.getTimesRule().add(timesRule);
session.setAttribute("strategy", strategy);

}

public String saveStrag() throws Exception {
HttpSession session=request.getSession();
Strategy strategy = (Strategy) session.getAttribute("strategy");
if(getStragService().saveStrag(strategy)){
return SUCCESS;
}
return ERROR;
}

但是这样存储报The column nmStrategyId in table tbTimesRule does not allow null values.
说外键为空

...全文