attempted to assign id from null one-to-one property:

 java.lang.String cannot be cast to java.lang.Long

在hbm.xml文件里面：

    把long改成string就好了。

   <property name="homeNumber" column="homeNumber" type="long"></property>
   <property name="workNumber" column="workNumber" type="string"></property>
   <property name="mobileNumber" column="mobileNumber" type="string"></property>
   <property name="linkmanNumber" column="linkmanNumber" type="string"></property>

 

attempted to assign id from null one-to-one property:

Customer ss = new Customer(200,"man32","广州");
  Number number1 = new Number("34234","","54545","345335");
  ss.setNumber(number1);//这里两个对象要互相插入，只有其中一个是不行的。
  number1.setCustomer(ss);

  session.save(ss);//保存的顺序也有影响，因为Numer是把Customer的主键当自己的外键，从而建立自己的主键的值，所以应该先保存Customer的值再保存Number.
  session.save(number1);