92 lines
4.2 KiB
Markdown
92 lines
4.2 KiB
Markdown
- [Apache Shiro Quick Start](#apache-shiro-quick-start)
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- [Apache Shiro常用API](#apache-shiro常用api)
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- [获取当前用户](#获取当前用户)
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- [设置用户Session](#设置用户session)
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- [通过用户名和密码对用户进行身份认证](#通过用户名和密码对用户进行身份认证)
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- [对身份认证失败的情况进行异常处理](#对身份认证失败的情况进行异常处理)
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- [对已经登录的用户进行role检验](#对已经登录的用户进行role检验)
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- [检测某用户是否具有某项特定权限](#检测某用户是否具有某项特定权限)
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- [在实例级别对用户的权限进行检测](#在实例级别对用户的权限进行检测)
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- [用户登出](#用户登出)
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# Apache Shiro Quick Start
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## Apache Shiro常用API
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### 获取当前用户
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在任何环境中,都可以通过如下代码来获取当前执行的用户:
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```java
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Subject currentUser = SecurityUtils.getSubject();
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```
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### 设置用户Session
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可以通过如下代码获取用户的Shiro Session,并可以向Session中设置属性和值,设置的值在用户会话期间内都可以使用。
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**Shiro Session在使用时并不要求当前位于HTTP环境下**
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```java
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Session session = currentUser.getSession();
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session.setAttribute( "someKey", "aValue" );
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```
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> 如果当前应用部署于Web环境下,那么Shiro Session默认会使用HttpSession,但是如果当前应用部署在非Web环境下时,Shiro Session会使用其Enterprise Session Management。
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### 通过用户名和密码对用户进行身份认证
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通过如下代码,可以通过UsernamePasswordToken来对未认证的用户进行身份认证。
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```java
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if ( !currentUser.isAuthenticated() ) {
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//collect user principals and credentials in a gui specific manner
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//such as username/password html form, X509 certificate, OpenID, etc.
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//We'll use the username/password example here since it is the most common.
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//(do you know what movie this is from? ;)
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UsernamePasswordToken token = new UsernamePasswordToken("lonestarr", "vespa");
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//this is all you have to do to support 'remember me' (no config - built in!):
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token.setRememberMe(true);
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currentUser.login(token);
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}
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```
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### 对身份认证失败的情况进行异常处理
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如果在身份认证的过程中失败,可以通过如下代码捕获认证失败抛出的异常,并对异常进行异常处理
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```java
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try {
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currentUser.login( token );
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//if no exception, that's it, we're done!
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} catch ( UnknownAccountException uae ) {
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//username wasn't in the system, show them an error message?
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} catch ( IncorrectCredentialsException ice ) {
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//password didn't match, try again?
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} catch ( LockedAccountException lae ) {
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//account for that username is locked - can't login. Show them a message?
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}
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... more types exceptions to check if you want ...
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} catch ( AuthenticationException ae ) {
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//unexpected condition - error?
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}
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```
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### 对已经登录的用户进行role检验
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如果用户已经登录,如果要检测该用户是否被授予某role权限,可以通过如下代码进行检验
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```java
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if ( currentUser.hasRole( "schwartz" ) ) {
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log.info("May the Schwartz be with you!" );
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} else {
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log.info( "Hello, mere mortal." );
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}
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```
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### 检测某用户是否具有某项特定权限
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如果要对已经登录的用户执行检测,检测其是否被授予某项特定的前线,可以通过如下方式进行检测。
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```java
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if ( currentUser.isPermitted( "lightsaber:wield" ) ) {
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log.info("You may use a lightsaber ring. Use it wisely.");
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} else {
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log.info("Sorry, lightsaber rings are for schwartz masters only.");
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}
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```
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### 在实例级别对用户的权限进行检测
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在Shiro中,可以检测用户是否对某实例具有特定权限,通过如下代码:
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```java
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if ( currentUser.isPermitted( "winnebago:drive:eagle5" ) ) {
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log.info("You are permitted to 'drive' the 'winnebago' with license plate (id) 'eagle5'. " +
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"Here are the keys - have fun!");
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} else {
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log.info("Sorry, you aren't allowed to drive the 'eagle5' winnebago!");
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}
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```
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### 用户登出
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如果已经登录的用户想要执行登出操作,可以通过如下代码进行登录:
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```java
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currentUser.logout();
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``` |