学习shiro——注解式授权和JSP标签授权
学习shiro——注解式授权和JSP标签授权
啊哈关关 发表于4个月前
学习shiro——注解式授权和JSP标签授权
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  • 注解式授权 (shiro官网地址:http://shiro.apache.org/authorization.html#Authorization-AnnotationbasedAuthorization)

@RequiresAuthentication 要求当前Subject已经在当前的session中被验证通过才能被访问或调用      

@RequiresAuthentication
public void updateAccount(Account userAccount) {
    //this method will only be invoked by a
    //Subject that is guaranteed authenticated
    ...
}
public void updateAccount(Account userAccount) {
    if (!SecurityUtils.getSubject().isAuthenticated()) {
        throw new AuthorizationException(...);
    }

    //Subject is guaranteed authenticated here
    ...
}

由上述例子可知,@RequiresAuthentication必须被验证通过后才能被访问或调用

2.RequiresGuest注解

@RequiresGuest要求当前的Subject是一个“guest”(访客的意思),也就是说,他们必须是在之前的session中没有被验证或被记住才能被访问或调用,

@RequiresGuest
public void signUp(User newUser) {
    //this method will only be invoked by a
    //Subject that is unknown/anonymous
    ...
}

public void signUp(User newUser) {
    Subject currentUser = SecurityUtils.getSubject();
    PrincipalCollection principals = currentUser.getPrincipals();
    if (principals != null && !principals.isEmpty()) {
        //known identity - not a guest:
        throw new AuthorizationException(...);
    }

    //Subject is guaranteed to be a 'guest' here
    ...
}


//以上两个方法的功能是一样的

 

3.RequiresPermissions["account:create"]注解

@RequiresPermissions["account:create"]要求当前的subject被允许一个或多个权限,以便执行注解的方法。

@RequiresPermissions("account:create")
public void createAccount(Account account) {
    //this method will only be invoked by a Subject
    //that is permitted to create an account
    ...
}



public void createAccount(Account account) {
    Subject currentUser = SecurityUtils.getSubject();
    if (!subject.isPermitted("account:create")) {
        throw new AuthorizationException(...);
    }

    //Subject is guaranteed to be permitted here
    ...
}



//以上两个方法的功能是一样的

 

4.@RequiresRoles注解

@RequiresRoles["administrator"]要求当前的subject拥有所有指定的角色,如果他们没有,则该方法将不会被执行,而且AuthorizationException异常将会被抛出

@RequiresRoles["administrator"]要求当前的subject拥有所有指定的角色,如果他们没有,则该方法将不会被执行,而且AuthorizationException异常将会被抛出

@RequiresRoles("administrator")
public void deleteUser(User user) {
    //this method will only be invoked by an administrator
    ...
}


public void deleteUser(User user) {
    Subject currentUser = SecurityUtils.getSubject();
    if (!subject.hasRole("administrator")) {
        throw new AuthorizationException(...);
    }

    //Subject is guaranteed to be an 'administrator' here
    ...
}


//以上两个方法是一样的功能

5.RequireUser注解

@RequiresUser注解需要当前的Subject是一个应用程序用户才能被注解的类/实例方法访问或调用

@RequiresUser
public void updateAccount(Account account) {
    //this method will only be invoked by a 'user'
    //i.e. a Subject with a known identity
    ...
}

public void updateAccount(Account account) {
    Subject currentUser = SecurityUtils.getSubject();
    PrincipalCollection principals = currentUser.getPrincipals();
    if (principals == null || principals.isEmpty()) {
        //no identity - they're anonymous, not allowed:
        throw new AuthorizationException(...);
    }

    //Subject is guaranteed to have a known identity here
    ...
}

//以上两种方法的功能是一样的

 

6.JSP标签授权(官网地址见:http://shiro.apache.org/web.html#web-taglibrary)

tag库配置,web页面需加上该行:

<%@ taglib prefix="shiro" uri="http://shiro.apache.org/tags" %>

 并要引入jar包:

<dependency>
    <groupId>org.apache.shiro</groupId>
    <artifactId>shiro-web</artifactId>
    <version>1.3.2</version>
</dependency>

guest标签:用户没有身份验证时显示的信息,即游客访问信息;

<shiro:guest>
    Hi there!  Please <a href="login.jsp">Login</a> or <a href="signup.jsp">Signup</a> today!
</shiro:guest>

user标签:用户已经身份验证/记住我登录后显示的信息;

<shiro:user>
    Welcome back John!  Not John? Click <a href="login.jsp">here<a> to login.
</shiro:user>

authenticated标签:用户已经身份验证通过,即subject login登录成功,不是记住我登录的。

<shiro:authenticated>
    <a href="updateAccount.jsp">Update your contact information</a>.
</shiro:authenticated>

notAuthenticated标签:用户没有身份验证通过,即没有调用subject login进行登录,包括记住我的也属于未进行身份验证

<shiro:notAuthenticated>
    Please <a href="login.jsp">login</a> in order to update your credit card information.
</shiro:notAuthenticated>

principal标签:显示用户身份信息,默认调用subject getPrincipal()获取,即primary principal

Hello, <shiro:principal/>, how are you today?



Hello, <%= SecurityUtils.getSubject().getPrincipal().toString() %>, how are you today?

hasRole标签:如果当前subject有角色将显示body体内容

<shiro:hasRole name="administrator">
    <a href="admin.jsp">Administer the system</a>
</shiro:hasRole>

lacksRole标签:如果当前subject没有角色将显示body体内容

<shiro:lacksRole name="administrator">
    Sorry, you are not allowed to administer the system.
</shiro:lacksRole>

hasAnyRoles标签:如果当前subject有任意一个角色(或的关系)将显示body体的内容

<shiro:hasAnyRoles name="developer, project manager, administrator">
    You are either a developer, project manager, or administrator.
</shiro:hasAnyRoles>

hasPermission标签:如果当前subject有权限将显示body体内容

<shiro:hasPermission name="user:create">
    <a href="createUser.jsp">Create a new User</a>
</shiro:hasPermission>

lacksPermissions标签:如果当前subject没有权限将显示body体内容

<shiro:lacksPermission name="user:delete">
    Sorry, you are not allowed to delete user accounts.
</shiro:lacksPermission>

 

标签: shiro jsp Authorization
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