角色和权限Hibernate实体映射配置

来源：互联网发布：清华大学网络教育编辑：程序博客网时间：2024/06/05 07:59

角色实体

package cn.itcast.oa.domain;import java.util.HashSet;import java.util.Set;/** * 岗位 *  * @author tyg *  */public class Role {    private Long id;    private String name;    private String description;    private Set<User> users = new HashSet<User>();    private Set<Privilege> privileges = new HashSet<Privilege>();    public Long getId() {        return id;    }    public void setId(Long id) {        this.id = id;    }    public Set<User> getUsers() {        return users;    }    public void setUsers(Set<User> users) {        this.users = users;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public String getDescription() {        return description;    }    public void setDescription(String description) {        this.description = description;    }    public Set<Privilege> getPrivileges() {        return privileges;    }    public void setPrivileges(Set<Privilege> privileges) {        this.privileges = privileges;    }}

权限实体

package cn.itcast.oa.domain;import java.util.HashSet;import java.util.Set;/** * 权限 *  * @author tyg *  */public class Privilege {    private Long id;    private String url;    private String name; // 权限名称    private Set<Role> roles = new HashSet<Role>();    private Privilege parent; // 上级权限    private Set<Privilege> children = new HashSet<Privilege>(); // 下级权限    public Privilege() {    }    public Privilege(String name, String url, Privilege parent) {        this.name = name;        this.url = url;        this.parent = parent;    }    public Long getId() {        return id;    }    public void setId(Long id) {        this.id = id;    }    public String getUrl() {        return url;    }    public void setUrl(String url) {        this.url = url;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public Set<Role> getRoles() {        return roles;    }    public void setRoles(Set<Role> roles) {        this.roles = roles;    }    public Privilege getParent() {        return parent;    }    public void setParent(Privilege parent) {        this.parent = parent;    }    public Set<Privilege> getChildren() {        return children;    }    public void setChildren(Set<Privilege> children) {        this.children = children;    }}

两者映射

<?xml version="1.0"?><!DOCTYPE hibernate-mapping PUBLIC        "-//Hibernate/Hibernate Mapping DTD 3.0//EN"        "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"><hibernate-mapping package="cn.itcast.oa.domain">    <class name="Role" table="itcast_role">        <id name="id">            <generator class="native"/>        </id>        <property name="name" />        <property name="description" />                        <!-- users属性，本类与User的多对多 -->        <set name="users" table="itcast_user_role">            <key column="roleId"></key>            <many-to-many class="User" column="userId"></many-to-many>        </set>                        <!-- privileges属性，本类与Privilege的多对多 -->        <set name="privileges" table="itcast_role_privilege" lazy="false">            <key column="roleId"></key>            <many-to-many class="Privilege" column="privilegeId"></many-to-many>        </set>                </class>    </hibernate-mapping>

<?xml version="1.0"?><!DOCTYPE hibernate-mapping PUBLIC        "-//Hibernate/Hibernate Mapping DTD 3.0//EN"        "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"><hibernate-mapping package="cn.itcast.oa.domain">    <class name="Privilege" table="itcast_privilege">        <id name="id">            <generator class="native"/>        </id>        <property name="url" />        <property name="name" />                        <!-- roles属性，本类与Role的多对多-->        <set name="roles" table="itcast_role_privilege">            <key column="privilegeId"></key>            <many-to-many class="Role" column="roleId"></many-to-many>        </set>        <!-- parent属性，本类与Privilege（上级）的多对一-->        <many-to-one name="parent" class="Privilege" column="parentId"></many-to-one>        <!-- children属性，本类与Privilege（下级）的一对多-->        <set name="children" lazy="false">            <key column="parentId"></key>            <one-to-many class="Privilege"/>        </set>            </class>    </hibernate-mapping>

Hibernate实体映射总结

格式：？属性，本类与？的？
?1   属性名
?2   关联对类型
?3   关系

   多对一：
       <many-to-one name="" class="" column=""></many-to-one>
   一对多（Set）：
       <set name="">
           <key column=""></key>
           <one-to-many class=""/>
       </set>
   多对多（Set）：
       <set name="" table="">
           <key column=""></key>
           <many-to-many class="" column=""></many-to-many>
       </set>

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