Java提高——05-shiro-授权的简单判断

短命女 2021-07-25 12:27 266阅读 0赞

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## \#3 Shiro 的授权初步实现 ##

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# 3.1 判断角色 #

### 3.1.1 修改配置文件 ###

直接在密码后面添加用户包含的角色名即可。

[users]
    zhangsan=zs,role1,role2
    lisi=ls

## 3.1.2 添加代码 ##

hasRole()通过返回值判断用户是否具有指定角色。

if(subject.isAuthenticated){ 
     		System.out.println("登录成功");
     		boolean hasRoleResult = SecurityUtils.getSubject().hasRole("role1");
    		System.out.println("result:"+hasRoleResult);
    }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzNjA4MDAw_size_16_color_FFFFFF_t_70 2]  
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通过  subject 看是否 有角色

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# 3.2 判断权限 #

## 3.2.1 修改配置文件 ##

[users]
    zhangsan=zs,role1,role2
    lisi=ls
    [roles]
    role1=permission1,permission2

![在这里插入图片描述][2021011920554190.png]

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## 3.2.2 添加测试代码 ##

在认证成功之后授权  
通过是否出现 AuthenticationException 异常控制是否有指定权限。  
`SecurityUtils.getSubject().checkPermission("permission");`

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# 4 Realm 实现认证 #

### 4.1 使用 iniRealm ###

public class ShiroRun { 
     		public static void main(String[] args) { 
     
     			SecurityManager securityManager = new DefaultSecurityManager();
    			IniRealm iniRealm = new IniRealm("classpath:shiro.ini");
    			securityManager.setRealm(iniRealm);
     			SecurityUtils.setSecurityManager(securityManager);
     			Subject subject = SecurityUtils.getSubject();
     //web 项目时，用户名和密码是客户端表单传递过来的用户名和密码。
     AuthenticationToken token = new UsernamePasswordToken("admin", 
    "pwd");
     		try { 
     //login()方法没有返回值，只能通过是否有异常判断是否登录成功。
    				 subject.login(token);
    				 System.out.println("登录成功");
     			} catch (UnknownAccountException e) { 
     				System.out.println("账号不存在");
     			} catch (IncorrectCredentialsException e) { 
    				 System.out.println("密码错误");
     			} catch (AuthenticationException e) { 
    				 e.printStackTrace();
    			 }
     		} 		
     	}

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