对于与表映射的持久对象。映射类应该是具有普通旧 Java 对象所有规则的 POJO。它的setter和getter不应该有任何其他对象初始化的代码。
public class Cat {
String id;
String name;
Type type;
/**
* @return the id
*/
public String getId() {
return id;
}
/**
* @param id the id to set
*/
public void setId(String id) {
if(id != null) {
type = new Type(); //This will cause in exception org.hibernate.exception.GenericJDBCException: Could not execute JDBC batch update
//ERROR 2017-03-07 00:37:30,253 [tomcat-http--22] - ERROR: cannot execute UPDATE in a read-only transaction
}
this.id = id;
}
/**
* @return the name
*/
public String getName() {
return name;
}
/**
* @param name the name to set
*/
public void setName(String name) {
this.name = name;
}
异常(exception)是:-
WARN 2017-03-07 00:37:30,253 [tomcat-http--22] - SQL Error: 0, SQLState: 25006
ERROR 2017-03-07 00:37:30,253 [tomcat-http--22] - ERROR: cannot execute UPDATE in a read-only transaction
ERROR 2017-03-07 00:37:30,254 [tomcat-http--22] - Could not synchronize database state with session
org.hibernate.exception.GenericJDBCException: Could not execute JDBC batch update
at org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.java:103)
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:91)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:253)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:266)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:168)
at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
为什么hibernate只期望有严格规则的POJO？ hibernate 有这方面的指导吗？
如果我从方法 setId 中删除代码，则它可以工作，只保留 Id 的分配。
最佳答案
看起来您在某处将方法标记为 @Transactional(readonly=true)
关于java - Hibernate 使用普通 POJO，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/42667257/