本人小白，表示視頻一看就覺(jué)得會(huì)了，做起來(lái)老是出錯(cuò)，嚴(yán)重影響學(xué)習(xí)進(jìn)度，為糾正錯(cuò)誤我反復(fù)又把視頻看了很多遍，百度查了說(shuō)是跟主鍵生成方式有關(guān)，也按自己能理解的去做了，現(xiàn)在真是不知道錯(cuò)在哪兒了，下面貼出代碼，請(qǐng)大蝦高手前輩幫忙指點(diǎn)指點(diǎn)，感激不盡?。?！oralce數(shù)據(jù)庫(kù)建表語(yǔ)句： CREATE?TABLE?GRADE?(CID?NUMBER(20)?NOT?NULL?CONSTRAINT?PK_CLA?PRIMARY?KEY, CNAME?VARCHAR2(50), CDESC?VARCHAR2(200)); CREATE?TABLE?STUDENT?(SID?NUMBER(20)?NOT?NULL?CONSTRAINT?PK_STU?PRIMARY?KEY, SNAME?VARCHAR2(50), SAGE?NUMBER(2), SSEX?VARCHAR2(2), SPHONENO?VARCHAR2(15), CID?NUMBER(20)?NOT?NULL); ALTER?TABLE?STUDENT?ADD?CONSTRAINT?FK_STU?FOREIGN?KEY??(CID)?REFERENCES?GRADE(CID);hibernate運(yùn)行的控制臺(tái)信息：2017-5-11 19:46:17 org.hibernate.tool.hbm2ddl.TableMetadata <init>INFO: HHH000261: Table found: MKADMIN.GRADE2017-5-11 19:46:17 org.hibernate.tool.hbm2ddl.TableMetadata <init>INFO: HHH000037: Columns: [cdesc, cid, cname]2017-5-11 19:46:17 org.hibernate.tool.hbm2ddl.TableMetadata <init>INFO: HHH000108: Foreign keys: []2017-5-11 19:46:17 org.hibernate.tool.hbm2ddl.TableMetadata <init>INFO: HHH000126: Indexes: [pk_cla]2017-5-11 19:46:18 org.hibernate.tool.hbm2ddl.TableMetadata <init>INFO: HHH000261: Table found: MKADMIN.STUDENT2017-5-11 19:46:18 org.hibernate.tool.hbm2ddl.TableMetadata <init>INFO: HHH000037: Columns: [sid, sage, sphoneno, ssex, sname, cid]2017-5-11 19:46:18 org.hibernate.tool.hbm2ddl.TableMetadata <init>INFO: HHH000108: Foreign keys: [fk_stu]2017-5-11 19:46:18 org.hibernate.tool.hbm2ddl.TableMetadata <init>INFO: HHH000126: Indexes: [pk_stu]2017-5-11 19:46:18 org.hibernate.tool.hbm2ddl.SchemaUpdate executeINFO: HHH000232: Schema update completeHibernate:?? ? insert?? ? into? ? ? ? GRADE? ? ? ? (CNAME, CDESC, CID)?? ? values? ? ? ? (?, ?, ?)Hibernate:?? ? update? ? ? ? Student?? ? set? ? ? ? CID=??? ? where? ? ? ? SID=?這里為什么GRADE表是插入，學(xué)生表卻是更新呢？是不是錯(cuò)在這？JUNIT4 的錯(cuò)誤跟蹤信息：org.hibernate.StaleStateException: Batch update returned unexpected row count from update [0]; actual row count: 0; expected: 1 at org.hibernate.jdbc.Expectations$BasicExpectation.checkBatched(Expectations.java:81) at org.hibernate.jdbc.Expectations$BasicExpectation.verifyOutcome(Expectations.java:73) at org.hibernate.engine.jdbc.batch.internal.NonBatchingBatch.addToBatch(NonBatchingBatch.java:59) at org.hibernate.persister.collection.AbstractCollectionPersister.recreate(AbstractCollectionPersister.java:1256) at org.hibernate.persister.collection.OneToManyPersister.recreate(OneToManyPersister.java:183) at org.hibernate.action.internal.CollectionRecreateAction.execute(CollectionRecreateAction.java:58) at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:377) at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:369) at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:292) at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:339) at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:52) at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1234) at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:404) at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.beforeTransactionCommit(JdbcTransaction.java:101) at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.commit(AbstractTransactionImpl.java:175) at HbmTest.destory(HbmTest.java:31) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42) at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:36) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222) at org.junit.runners.ParentRunner.run(ParentRunner.java:300) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)配置文件hibernate.cfg.xml:<?xml?version="1.0"?encoding="UTF-8"?> <!DOCTYPE?hibernate-configuration?PUBLIC "-//Hibernate/Hibernate?Configuration?DTD?3.0//EN" "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"> <hibernate-configuration> <session-factory> <property?name="javax.persistence.validation.mode">none</property> <property?name="hibernate.connection.driver_class">oracle.jdbc.driver.OracleDriver</property> <property?name="hibernate.connection.url">jdbc:oracle:thin:@localhost:1521:orcl</property> <property?name="hibernate.connection.username">MKADMIN</property> <property?name="hibernate.connection.password">MK123456</property> <property?name="dialect">org.hibernate.dialect.Oracle10gDialect</property> <property?name="show_sql">true</property> <property?name="format_sql">true</property> <property?name="hbm2ddl.auto">update</property> <property?name="current_session_context_class">thread</property> <mapping?resource="Grade.hbm.xml"/> <mapping?resource="Student.hbm.xml"/> </session-factory> </hibernate-configuration>映射文件：Grade.hbm.xml<?xml?version="1.0"?encoding="UTF-8"?> <!DOCTYPE?hibernate-mapping?PUBLIC? ????"-//Hibernate/Hibernate?Mapping?DTD?3.0//EN" ????"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd"> <hibernate-mapping> <!--?dynamic-update?列動(dòng)態(tài)更新，那列變化更新那個(gè)?--> <class?name="po.Grade"?table="GRADE"?dynamic-update="true"> <id?name="cId"?type="java.lang.Integer"> <column?name="CID"?length="20"/> <generator?class="assigned"/> </id> <property?name="cName"?type="java.lang.String"> <column?name="CNAME"?length="50"/> </property> <property?name="cDesc"?type="java.lang.String"> <column?name="CDESC"?length="200"/> </property> <set?name="students"?table="student"> <key?column="CID"/> <one-to-many?class="po.Student"/> </set> </class> </hibernate-mapping>映射文件：Student.hbm.xml<?xml?version="1.0"?encoding="UTF-8"?> <!DOCTYPE?hibernate-mapping?PUBLIC? ????"-//Hibernate/Hibernate?Mapping?DTD?3.0//EN" ????"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd"> <hibernate-mapping> <!--?dynamic-update?字段動(dòng)態(tài)更新，那個(gè)變化更新那個(gè)?--> <class?name="po.Student"?table="Student"?dynamic-update="true"> <id?name="sId"?type="java.lang.Integer"> <column?name="SID"?length="20"/> <generator?class="assigned"/> </id> <property?name="sName"?type="java.lang.String"> <column?name="SNAME"?length="50"/> </property> <property?name="sPhoneNo"?type="java.lang.String"> <column?name="SPHONENO"?length="15"/> </property> <property?name="sSex"?type="java.lang.String"> <column?name="SSEX"?length="2"/> </property> <property?name="sAge"?type="java.lang.Integer"> <column?name="SAGE"?length="2"/> </property> </class> </hibernate-mapping>測(cè)試類代碼：因?yàn)閷?shí)體類主要是屬性和構(gòu)造方法，就不貼了import?java.util.HashSet; import?java.util.Set; import?org.hibernate.Session; import?org.hibernate.SessionFactory; import?org.hibernate.Transaction; import?org.hibernate.cfg.Configuration; import?org.hibernate.service.ServiceRegistry; import?org.hibernate.service.ServiceRegistryBuilder; import?org.junit.After; import?org.junit.Before; import?org.junit.Test; import?po.Grade; import?po.Student; public?class?HbmTest?{ private?SessionFactory?sf=null; private?Session?session=null; private?Transaction?tran=null; @Before public?void?init(){ Configuration?cfg=new?Configuration().configure(); ServiceRegistry?sr=new?ServiceRegistryBuilder().applySettings(cfg.getProperties()).buildServiceRegistry(); sf=cfg.buildSessionFactory(sr); session=sf.getCurrentSession(); tran=session.beginTransaction(); } @After public?void?destory(){ tran.commit(); sf.close(); } @Test public?void?test(){ Grade?c1=new?Grade(1,"java1班","java軟件開(kāi)發(fā)一班"); Student?s1=new?Student(1,"黃三","07913356566","男",15); Student?s2=new?Student(2,"王五","07913300000","女",18); Set<Student>students=new?HashSet<Student>(); students.add(s1); students.add(s2); c1.setStudents(students); session.save(c1); } }