shiro学习（4）-授权

概念

授权，又称作为访问控制，是对资源的访问管理的过程，即对于认证通过的用户，授予他可以访问某些资源的权限。

授权流程图

 

 

 

简单授权实现

在shiro-permession.ini文件中设置

[users]
#用户admin的密码是123456，此用户具有role2角色
coco=123456,role1
admin=123456,role1,role2

[roles]
#角色role1对资源user拥有create、update、delete权限
role1=user:create,user:update,user:delete
#角色role2对资源user拥有create权限
role2=user:create
#角色role3对资源user拥有select权
role3=user:select

验证角色和权限

@Test
	public void demoTree(){
		// 装入 INI 配置
		Factory<SecurityManager> factory = new IniSecurityManagerFactory("classpath:shiro-permession.ini");
		//创建SecurityManager对象
		SecurityManager instance = factory.getInstance();
		//使SecurityManager可以访问
		SecurityUtils.setSecurityManager(instance);
		//接受提交的用户名和密码： 
		UsernamePasswordToken tooken = new UsernamePasswordToken("admin","123456");
		//获取当前主体
		Subject subject = SecurityUtils.getSubject();
		try {
			subject.login(tooken);
		} catch (UnknownAccountException e) {
			System.out.println("用户名错误！");
		}
		 catch (IncorrectCredentialsException e) {
				System.out.println("密码错误！");
			}
		System.out.println("是否认证成功：" + subject.isAuthenticated());
		//粗颗粒度授权 ===> 角色验证
		System.out.println(subject.getPrincipal()+" 是否具有role1角色====> "+subject.hasRole("role1"));
		System.out.println(subject.getPrincipal()+" 是否具有role2角色====> "+subject.hasRole("role2"));
		System.out.println(subject.getPrincipal()+" 是否具有role3角色====> "+subject.hasRole("role3"));
		System.out.println(subject.getPrincipal()+" 是否具有role1和role2角色====> "+subject.hasAllRoles(Arrays.asList("role1","role2")));
		//subject.checkRole("role1");
		//细颗粒度授权 ===> 资源验证
		System.out.println(subject.getPrincipal()+" 是否具有user:create资源权限====> "+subject.isPermitted("user:create"));
		System.out.println(subject.getPrincipal()+" 是否具有user:delete资源权限====> "+subject.isPermitted("user:delete"));
		System.out.println(subject.getPrincipal()+" 是否具有user:delete,user:update资源权限====> "+subject.isPermittedAll("user:delete","user:update"));
		
	}

输出结果

是否认证成功：true
admin 是否具有role1角色====> true
admin 是否具有role2角色====> true
admin 是否具有role3角色====> false
admin 是否具有role1和role2角色====> true
admin 是否具有user:create资源权限====> true
admin 是否具有user:delete资源权限====> true
admin 是否具有user:delete,user:update资源权限====> true

注意

subject.checkRole("role1");
subject.checkPermission("user:create");

检查是否存在该角色和权限，如果不存在则会抛异常

自定义Realm授权

重写授权的方法

注意：这里认证方法中采用的是明文认证

public class ShiroRealmsOne extends AuthorizingRealm{
	/**
	 * 认证
	 */
	@Override
	protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
		String username =(String)token.getPrincipal();
		if(!"admin".equals(username)){
			return null;
		}
		//String pwd = "123456"; 密码
		//String salt = "copy"; 盐值
		//  acd1b8d62a8369c3d6278ea6f663407b  两次迭代加密后的密码
		String salt = "copy";
		ByteSource saltByte = ByteSource.Util.bytes(salt);
		String password = "123456";
		SimpleAuthenticationInfo info = new SimpleAuthenticationInfo(username,password,this.getName());
		return info;
	}

	/**
	 * 授权
	 */
	@Override
	protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
		String username = (String)principals.getPrimaryPrincipal();
		List<String> list = new ArrayList<String>();
		list.add("project:create");
		list.add("user:delete");
		SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
		info.addStringPermissions(list);
		return info;
	}

	

}

 shiro-realms.ini文件

[main]
shiroUserRealm=com.sumeng.shiro.ShiroRealmsOne
securityManager.realms=$shiroUserRealm

测试

@Test
	public void demoTree(){
		// 装入 INI 配置
		Factory<SecurityManager> factory = new IniSecurityManagerFactory("classpath:shiro-realms.ini");
		//创建SecurityManager对象
		SecurityManager instance = factory.getInstance();
		//使SecurityManager可以访问
		SecurityUtils.setSecurityManager(instance);
		//接受提交的用户名和密码： 
		UsernamePasswordToken tooken = new UsernamePasswordToken("admin","123456");
		//获取当前主体
		Subject subject = SecurityUtils.getSubject();
		try {
			subject.login(tooken);
		} catch (UnknownAccountException e) {
			System.out.println("用户名错误！");
		}
		 catch (IncorrectCredentialsException e) {
				System.out.println("密码错误！");
			}
		System.out.println("是否认证成功：" + subject.isAuthenticated());
		//细颗粒度授权 ===> 资源验证
		System.out.println(subject.getPrincipal()+" 是否具有user:create资源权限====> "+subject.isPermitted("user:create"));
		System.out.println(subject.getPrincipal()+" 是否具有user:delete资源权限====> "+subject.isPermitted("user:delete"));
		System.out.println(subject.getPrincipal()+" 是否具有project:create资源权限====> "+subject.isPermitted("project:create"));
		System.out.println(subject.getPrincipal()+" 是否具有user:delete,project:create资源权限====> "+subject.isPermittedAll("user:delete","project:create"));
		
	}

输出结果

是否认证成功：true
admin 是否具有user:create资源权限====> false
admin 是否具有user:delete资源权限====> true
admin 是否具有project:create资源权限====> true
admin 是否具有user:delete,project:create资源权限====> true