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hibernate异常

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

这是什么问题啊

离锁忧

2015-10-15

源自：Hibernate初探之一对多映射 2-6

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3 回答

离锁忧提问者
2015-10-16

配置文件写错了

0 回复有任何疑惑可以回复我~

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离锁忧提问者
2015-10-15

public class Grade implements Serializable {

private int gid;
private String gname;
private String gdesc;

//在一方定义多方的集合
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;

//在多方定义一方的引用
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;
}

}