shiro入门小案例

素颜马尾好姑娘i 2022-06-11 09:44 197阅读 0赞

shiro是一个Java权限框架，具体详情请查看Apache里面的官方文档。  
这里写第一个shiro 的Java项目，首先是下载shiro 的jar包，还需要下载org.slf4j的jar包。  
在项目下面新建一个ini文件，用于存放用户和规则。  
src/shiro.ini

# =============================================================================
    # Tutorial INI configuration
    #
    # Usernames/passwords are based on the classic Mel Brooks' film "Spaceballs" :)
    # =============================================================================
    
    # -----------------------------------------------------------------------------
    # Users and their (optional) assigned roles
    # username = password, role1, role2, ..., roleN
    # -----------------------------------------------------------------------------
    [users]
    root = secret, admin
    guest = guest, guest
    presidentskroob = 12345, president
    darkhelmet = ludicrousspeed, darklord, schwartz
    lonestarr = vespa, goodguy, schwartz
    
    # -----------------------------------------------------------------------------
    # Roles with assigned permissions
    # roleName = perm1, perm2, ..., permN
    # -----------------------------------------------------------------------------
    [roles]
    admin = *
    schwartz = lightsaber:*
    goodguy = winnebago:drive:eagle5

src /com/demo/Tutorial.java

package com.demo;
    import org.apache.shiro.SecurityUtils;
    import org.apache.shiro.authc.*;
    import org.apache.shiro.config.IniSecurityManagerFactory;
    import org.apache.shiro.mgt.SecurityManager;
    import org.apache.shiro.session.Session;
    import org.apache.shiro.subject.Subject;
    import org.apache.shiro.util.Factory;
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    
    public class Tutorial { 
    
        private static final transient Logger log = LoggerFactory.getLogger(Tutorial.class);
    
        public static void main(String[] args) {
            log.info("My First Apache Shiro Application");
    
            Factory<SecurityManager> factory = new IniSecurityManagerFactory("classpath:shiro.ini");
            SecurityManager securityManager = factory.getInstance();
            SecurityUtils.setSecurityManager(securityManager);
    
            // get the currently executing user:
            Subject currentUser = SecurityUtils.getSubject();
    
            // Do some stuff with a Session (no need for a web or EJB container!!!)
            Session session = currentUser.getSession();
            session.setAttribute("someKey", "aValue");
            String value = (String) session.getAttribute("someKey");
            if (value.equals("aValue")) {
                log.info("Retrieved the correct value! [" + value + "]");
            }
    
            // let's login the current user so we can check against roles and permissions:
            if (!currentUser.isAuthenticated()) {
                UsernamePasswordToken token = new UsernamePasswordToken("lonestarr", "vespa");
                token.setRememberMe(true);
                try {
                    currentUser.login(token);
                } catch (UnknownAccountException uae) {
                    log.info("There is no user with username of " + token.getPrincipal());
                } catch (IncorrectCredentialsException ice) {
                    log.info("Password for account " + token.getPrincipal() + " was incorrect!");
                } catch (LockedAccountException lae) {
                    log.info("The account for username " + token.getPrincipal() + " is locked. " +
                            "Please contact your administrator to unlock it.");
                }
                // ... catch more exceptions here (maybe custom ones specific to your application?
                catch (AuthenticationException ae) {
                    //unexpected condition? error?
                }
            }
    
            //say who they are:
            //print their identifying principal (in this case, a username):
            log.info("User [" + currentUser.getPrincipal() + "] logged in successfully.");
    
            //test a role:
            if (currentUser.hasRole("schwartz")) {
                log.info("May the Schwartz be with you!");
            } else {
                log.info("Hello, mere mortal.");
            }
    
            //test a typed permission (not instance-level)
            if (currentUser.isPermitted("lightsaber:weild")) {
                log.info("You may use a lightsaber ring. Use it wisely.");
            } else {
                log.info("Sorry, lightsaber rings are for schwartz masters only.");
            }
    
            //a (very powerful) Instance Level permission:
            if (currentUser.isPermitted("winnebago:drive:eagle5")) {
                log.info("You are permitted to 'drive' the winnebago with license plate (id) 'eagle5'. " +
                        "Here are the keys - have fun!");
            } else {
                log.info("Sorry, you aren't allowed to drive the 'eagle5' winnebago!");
            }
    
            //all done - log out!
            currentUser.logout();
    
            System.exit(0);
        }
    }