在beans.xml配置文件（applicationContext.xml）中将

<property name="mappingResources">
<list>
<value>cw/test/bean/Employee.hbm.xml</value>
</list>
</property>

的映射关系删除，改成：

<property name="annotatedClasses">
<list><value>cw.test.bean.Employee</value></list>
</property>

其中cw.test.bean.Employee为实体类

具体的实体类改成如下形式，加入注解：

@Entity
@Table(name="employee")
public class Employee implements java.io.Serializable{
@Id
@Column(name="username")
private String username;

@Column(name="password")
private String password;

@Enumerated(EnumType.STRING)
private Gender gender = Gender.MAN;

public Employee(){}

public Employee(String username,String password){
this.username = username;
this.password = password;
}

public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public Gender getGender() {
return gender;
}
public void setGender(Gender gender) {
this.gender = gender;
}

}

需要注意的是如果某个字段是用的枚举类型，那么需要用到Enumerated注解，并且在实体类上要实现java.io.Serializable类。