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hibernate異常

Exception in thread "main" java.lang.ExceptionInInitializerError
?at com.zjx.entity.Test1.add(Test1.java:32)
?at com.zjx.entity.Test1.main(Test1.java:17)
Caused by: org.hibernate.MappingException: Could not get constructor for org.hibernate.persister.entity.SingleTableEntityPersister
?at org.hibernate.persister.internal.PersisterFactoryImpl.create(PersisterFactoryImpl.java:185)
?at org.hibernate.persister.internal.PersisterFactoryImpl.createEntityPersister(PersisterFactoryImpl.java:135)
?at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:399)
?at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1857)
?at com.zjx.util.HibernateUtil.<clinit>(HibernateUtil.java:21)
?... 2 more
Caused by: org.hibernate.HibernateException: Unable to instantiate default tuplizer [org.hibernate.tuple.entity.PojoEntityTuplizer]
?at org.hibernate.tuple.entity.EntityTuplizerFactory.constructTuplizer(EntityTuplizerFactory.java:138)
?at org.hibernate.tuple.entity.EntityTuplizerFactory.constructDefaultTuplizer(EntityTuplizerFactory.java:188)
?at org.hibernate.tuple.entity.EntityMetamodel.<init>(EntityMetamodel.java:403)
?at org.hibernate.persister.entity.AbstractEntityPersister.<init>(AbstractEntityPersister.java:520)
?at org.hibernate.persister.entity.SingleTableEntityPersister.<init>(SingleTableEntityPersister.java:148)
?at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
?at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
?at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
?at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
?at org.hibernate.persister.internal.PersisterFactoryImpl.create(PersisterFactoryImpl.java:163)
?... 6 more
Caused by: java.lang.reflect.InvocationTargetException
?at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
?at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
?at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
?at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
?at org.hibernate.tuple.entity.EntityTuplizerFactory.constructTuplizer(EntityTuplizerFactory.java:135)
?... 15 more
Caused by: org.hibernate.PropertyNotFoundException: Could not find a getter for student in class com.zjx.entity.Grade
?at org.hibernate.property.BasicPropertyAccessor.createGetter(BasicPropertyAccessor.java:310)
?at org.hibernate.property.BasicPropertyAccessor.getGetter(BasicPropertyAccessor.java:304)
?at org.hibernate.mapping.Property.getGetter(Property.java:323)
?at org.hibernate.tuple.entity.PojoEntityTuplizer.buildPropertyGetter(PojoEntityTuplizer.java:411)
?at org.hibernate.tuple.entity.AbstractEntityTuplizer.<init>(AbstractEntityTuplizer.java:200)
?at org.hibernate.tuple.entity.PojoEntityTuplizer.<init>(PojoEntityTuplizer.java:80)
?... 20 more

這是什么問題啊

正在回答

3 回答

配置文件寫錯了

0 回復 有任何疑惑可以回復我~

public class Grade implements Serializable {

?private int gid;
?private String gname;
?private String gdesc;
?
?//在一方定義多方的集合
?private Set<Student> students = new HashSet<Student>();

?public Grade(){
??
?}
?public Grade(int gid, String gname, String gdesc, Set<Student> students) {
??super();
??this.gid = gid;
??this.gname = gname;
??this.gdesc = gdesc;
??this.students = students;
?}

?public Grade(String gname, String gdesc) {
??super();
??this.gname = gname;
??this.gdesc = gdesc;
?}
?public int getGid() {
??return gid;
?}

?public void setGid(int gid) {
??this.gid = gid;
?}

?public String getGname() {
??return gname;
?}

?public void setGname(String gname) {
??this.gname = gname;
?}

?public String getGdesc() {
??return gdesc;
?}

?public void setGdesc(String gdesc) {
??this.gdesc = gdesc;
?}

?public Set<Student> getStudents() {
??return students;
?}

?public void setStudents(Set<Student> students) {
??this.students = students;
?}
?
?
?
}

public class Student implements Serializable {

?private int sid;
?private String sname;
?private String sex;
?
?//在多方定義一方的引用
?private Grade grade;
?
?public Grade getGrade() {
??return grade;
?}

?public void setGrade(Grade grade) {
??this.grade = grade;
?}

?public Student() {
??
?}
?
?public Student(String sname, String sex) {
?
??this.sname = sname;
??this.sex = sex;
?}

?public int getSid() {
??return sid;
?}
?public void setSid(int sid) {
??this.sid = sid;
?}
?public String getSname() {
??return sname;
?}
?public void setSname(String sname) {
??this.sname = sname;
?}
?public String getSex() {
??return sex;
?}
?public void setSex(String sex) {
??this.sex = sex;
?}
?
?
?
}

0 回復 有任何疑惑可以回復我~

在你沒有貼源碼的前提下暫時判斷是某個entity實體缺少無參構造方法。

0 回復 有任何疑惑可以回復我~
#1

離鎖憂 提問者

我都有添加無參的構造方法啊
2015-10-15 回復 有任何疑惑可以回復我~

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Hibernate初探之一對多映射
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Hibernate中一對多關聯映射配置,以及cascade和inverse屬性作用

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hibernate異常

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