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Spring安全角色分配

[英]Spring security role assignment

JEE容器通常提供一种机制,该机制使用专有的部署描述符将外部用户角色映射到内部用户角色。 也就是说,应用程序在web.xml中声明并使用内部角色,并且有一个文件(例如,用于weblogic的weblogic.xml)将分配给用户的实际角色映射到内部角色。

使用Spring Security时如何实现这种映射? 我正在使用Spring Security3.0.x。

Spring Security3.0.x。 不提供开箱即用的映射。

但是,您可以通过扩展用于身份验证方法的身份验证提供程序来自己实现它。

如果使用DaoAuthenticationProvider (内部使用UserDetailsService ),则可以重写addCustomAuthorities(String username, List<GrantedAuthority> authorities)方法,以根据已经授予的角色添加新角色/映射角色。

例如Extended UserDetailsService

...
@Override
protected void addCustomAuthorities(String username, List<GrantedAuthority> authorities) {
    super.addCustomAuthorities(username, authorities);

    List<GrantedAuthority> additional = new ArrayList<GrantedAuthority>();
    for (GrantedAuthority role : authorities) {
        additional .addAll(vourMappingService.getAdditionalForRole(role));
    }
    authorities.addAll(additional );
}

使用YourMappingService映射角色(通过将新角色添加到现有角色一次)

public class YourMappingService


 /**
     * Property bases mapping of roles to privileges.
     * Every role is one line, the privileges are comma separated.
     */
    private Properties roleToPrivileges;

    public YourMappingService(Properties roleToPrivileges) {
        if (roleToPrivileges == null) {
            throw new IllegalArgumentException("roleToPrivileges must not be null");
        }
        this.roleToPrivileges = roleToPrivileges;
    }

    @Override
    public Collection<? extends GrantedAuthority> getAdditionalForRole(GrantedAuthority role) {

        String authority = role.getAuthority();
        if(authority != null) {
            String commaSeparatedPrivileges = roleToPrivileges.getProperty(role.getAuthority());
            if (commaSeparatedPrivileges != null) {
                List<GrantedAuthority> privileges = new ArrayList<GrantedAuthority>();
                for(String privilegeName : StringUtils.commaDelimitedListToSet(commaSeparatedPrivileges)) {
                    privileges.add(new GrantedAuthorityImpl(privilegeName.trim()));
                }                
                return privileges;
            } else {
                return Collections.emptyList();
            }
        } else {
            return Collections.emptyList();
        }
    }   
}

组态:

<bean id="myUserDetailsService" class="de.humanfork.springsecurityroles.impl.JdbcDaoPrivilegesImpl">
    <constructor-arg ref="yourMappingService"/>
    <property name="dataSource" ref="dataSource"/>
    <property name="usersByUsernameQuery" value="SELECT login,encryptedPassword,loginEnabled FROM user WHERE login = ?"/>
    <property name="enableAuthorities" value="true"/>
    <property name="authoritiesByUsernameQuery" value="SELECT u.login, r.securityRoles FROM user u, user2security_roles r WHERE u.login= ? AND u.id = r. User_fk;"/>
</bean>


  <bean id="yourMappingService" class="ZourMappingService">
    <constructor-arg>
        <props>
        <prop key="ROLE_ADMIN">
                ROLE_backend_access,
                ROLE_user_mngt,
                ROLE_passwordLostRequest_mngt,
                ROLE_log_mngt
            </prop>
            <prop key="ROLE_USER">
            </prop>
        </props>
    </constructor-arg>
</bean>

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