Java MappingException:外键:category[category_ID])必须';vesame作为引用主键的列数(类别[股票ID,类别ID])
我真的在解决下面的错误请帮我解决这个问题 我正在开发许多关系示例Java MappingException:外键:category[category_ID])必须';vesame作为引用主键的列数(类别[股票ID,类别ID]),java,hibernate,Java,Hibernate,我真的在解决下面的错误请帮我解决这个问题 我正在开发许多关系示例 Initial SessionFactory creation failed.org.hibernate.MappingException: Foreign key (FK302BCFEEB260666:category [CATEGORY_ID])) must have same number of columns as the referenced primary key (category [STOCK_ID,CATEGOR
Initial SessionFactory creation failed.org.hibernate.MappingException: Foreign key (FK302BCFEEB260666:category [CATEGORY_ID])) must have same number of columns as the referenced primary key (category [STOCK_ID,CATEGORY_ID])
Exception in thread "main" java.lang.ExceptionInInitializerError
at com.mkyong.util.HibernateUtil.buildSessionFactory(HibernateUtil.java:17)
at com.mkyong.util.HibernateUtil.<clinit>(HibernateUtil.java:8)
at com.mkyong.App.main(App.java:13)
Caused by: org.hibernate.MappingException: Foreign key (FK302BCFEEB260666:category [CATEGORY_ID])) must have same number of columns as the referenced primary key (category [STOCK_ID,CATEGORY_ID])
at org.hibernate.mapping.ForeignKey.alignColumns(ForeignKey.java:112)
at org.hibernate.mapping.ForeignKey.alignColumns(ForeignKey.java:95)
at org.hibernate.cfg.Configuration.secondPassCompileForeignKeys(Configuration.java:1808)
at org.hibernate.cfg.Configuration.originalSecondPassCompile(Configuration.java:1729)
at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1396)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1829)
at com.mkyong.util.HibernateUtil.buildSessionFactory(HibernateUtil.java:13)
... 2 more
App.java
public class App {
public static void main(String[] args) {
System.out.println("Hibernate many to many (Annotation)");
Session session = HibernateUtil.getSessionFactory().openSession();
session.beginTransaction();
Stock stock = new Stock();
stock.setStockCode("7052");
stock.setStockName("PADINI");
Category category1 = new Category("CONSUMER", "CONSUMER COMPANY");
Category category2 = new Category("INVESTMENT", "INVESTMENT COMPANY");
Set<Category> categories = new HashSet<Category>();
categories.add(category1);
categories.add(category2);
stock.setCategories(categories);
session.save(stock);
session.getTransaction().commit();
System.out.println("Done");
}
}
编辑-1:
现在我的错误率已降至最低?
Exception in thread "main" org.hibernate.exception.SQLGrammarException: Could not execute JDBC batch update
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:92)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:275)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:268)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:188)
at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:321)
at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:51)
at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1216)
at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:383)
at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:133)
at com.mkyong.App.main(App.java:31)
Caused by: java.sql.BatchUpdateException: Table 'test.stock_category' doesn't exist
at com.mysql.jdbc.PreparedStatement.executeBatchSerially(PreparedStatement.java:2024)
at com.mysql.jdbc.PreparedStatement.executeBatch(PreparedStatement.java:1449)
at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:70)
at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:268)
... 8 more
联接表的名称假定为
连接在一起的关联主表(拥有方优先)
使用下划线
在这种情况下,联接表是stock\u类别
@JoinTable(name = "stock_category",
joinColumns = { @JoinColumn(name = "STOCK_ID", nullable = false, updatable = false) },
inverseJoinColumns = { @JoinColumn(name = "CATEGORY_ID")})
public class App {
public static void main(String[] args) {
System.out.println("Hibernate many to many (Annotation)");
Session session = HibernateUtil.getSessionFactory().openSession();
session.beginTransaction();
Stock stock = new Stock();
stock.setStockCode("7052");
stock.setStockName("PADINI");
Category category1 = new Category("CONSUMER", "CONSUMER COMPANY");
Category category2 = new Category("INVESTMENT", "INVESTMENT COMPANY");
Set<Category> categories = new HashSet<Category>();
categories.add(category1);
categories.add(category2);
stock.setCategories(categories);
session.save(stock);
session.getTransaction().commit();
System.out.println("Done");
}
}
create table stock(
stock_id BIGINT(10) NOT NULL AUTO_INCREMENT,
stock_code VARCHAR(50),
stock_name VARCHAR(50),
PRIMARY KEY (`stock_id`)
);
create table Category(
stock_id BIGINT(10) NOT NULL AUTO_INCREMENT,
category_id VARCHAR(50),
name VARCHAR(50),
description VARCHAR(50),
PRIMARY KEY (`stock_id`)
)
Exception in thread "main" org.hibernate.exception.SQLGrammarException: Could not execute JDBC batch update
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:92)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:275)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:268)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:188)
at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:321)
at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:51)
at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1216)
at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:383)
at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:133)
at com.mkyong.App.main(App.java:31)
Caused by: java.sql.BatchUpdateException: Table 'test.stock_category' doesn't exist
at com.mysql.jdbc.PreparedStatement.executeBatchSerially(PreparedStatement.java:2024)
at com.mysql.jdbc.PreparedStatement.executeBatch(PreparedStatement.java:1449)
at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:70)
at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:268)
... 8 more
@JoinTable(name = "stock_category",
joinColumns = { @JoinColumn(name = "STOCK_ID", nullable = false, updatable = false) },
inverseJoinColumns = { @JoinColumn(name = "CATEGORY_ID")})