1 Authenticator 简介
1.1 层次结构图
1.2 作用
职责是验证用户帐号,是ShiroAPI中身份验证核心的入口点;接口中声明的authenticate方法就是用来实现认证逻辑的。
1.3 源代码
1.4 authenticate
》该方法是实现认证逻辑的。
》如果验证成功,将返回AuthenticationInfo验证信息;此信息中包含了身份及凭证;如果验证失败将抛出相应的 AuthenticationException 实现。
2 ModularRealmAuthenticator
2.1 关系图
2.2 作用
认证策略接口,自定义认证策略时只需要继承该类即可(PS:一般使用默认的三种策略即可)
2.3 三种策略
》FirstSuccessfulStrategy:只要有一个Realm验证成功即可,只返回第一个Realm身份验证 成功的认证信息,其他的忽略;
》AtLeastOneSuccessfulStrategy:只要有一个Realm验证成功即可,和FirstSuccessfulStrategy 不同,返回所有 Realm 身份验证成功的认证信息;
》AllSuccessfulStrategy:所有Realm验证成功才算成功,且返回所有Realm身份验证成功的 认证信息,如果有一个失败就失败了。
》注意:ModularRealmAuthenticator 默认使用 AtLeastOneSuccessfulStrategy 策略。
3 代码实现
3.1 环境搭建
创建一个Maven项目,并引入shiro、junit相关依赖
<dependency> <groupId>org.apache.shiro</groupId> <artifactId>shiro-core</artifactId> <version>1.4.0</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> </dependency>
3.2 自定义Realm
》实现Realm接口即可
》MyRealm01
package com.xunyji.shirotest.realm; import org.apache.shiro.authc.*; import org.apache.shiro.realm.Realm; /** * @author AltEnter * @create 2019-01-21 16:21 * @desc 简易Realm01 **/ public class MyRealm01 implements Realm { /** 用户名 */ public static final String USERNAME = "fury1"; /** 用户密码 */ public static final String PASSWORD = "111111"; public String getName() { return "MyRealm01"; } public boolean supports(AuthenticationToken token) { if (token instanceof UsernamePasswordToken) { return true; } return false; } public AuthenticationInfo getAuthenticationInfo(AuthenticationToken token) throws AuthenticationException { String username = (String) token.getPrincipal(); String password = new String((char[]) token.getCredentials()); if (USERNAME.equals(username) && PASSWORD.equals(password)) { return new SimpleAuthenticationInfo(username, password, getName()); } else { throw new RuntimeException("MyRealm01 - 用户名或者密码错误"); } } }
》MyRealm02
package com.xunyji.shirotest.realm; import org.apache.shiro.authc.*; import org.apache.shiro.realm.Realm; /** * @author AltEnter * @create 2019-01-21 16:21 * @desc 简易Realm01 **/ public class MyRealm02 implements Realm { /** 用户名 */ public static final String USERNAME = "fury2"; /** 用户密码 */ public static final String PASSWORD = "222222"; public String getName() { return "MyRealm02"; } public boolean supports(AuthenticationToken token) { if (token instanceof UsernamePasswordToken) { return true; } return false; } public AuthenticationInfo getAuthenticationInfo(AuthenticationToken token) throws AuthenticationException { String username = (String) token.getPrincipal(); String password = new String((char[]) token.getCredentials()); if (USERNAME.equals(username) && PASSWORD.equals(password)) { return new SimpleAuthenticationInfo(username, password, getName()); } else { throw new RuntimeException("MyRealm02 - 用户名或者密码错误"); } } }
3.3 思路
》实例化Realm
》实例化SecurityManager
》实例化ModularRealmAuthenticator
》实例化FirstSuccessfulStrategy
》给ModularRealmAuthenticator对象设置认证策略
》给SecurityManager设置认证对象
》给SecurityManager设置Realm对象
》注意:SecurityManager必须先设置Authenticator再设置Realm,否则会报错
3.4 源代码
package com.xunyji.shirotest.autenticatedemo; import com.xunyji.shirotest.realm.MyRealm01; import com.xunyji.shirotest.realm.MyRealm02; import org.apache.shiro.SecurityUtils; import org.apache.shiro.authc.UsernamePasswordToken; import org.apache.shiro.authc.pam.AllSuccessfulStrategy; import org.apache.shiro.authc.pam.AtLeastOneSuccessfulStrategy; import org.apache.shiro.authc.pam.FirstSuccessfulStrategy; import org.apache.shiro.authc.pam.ModularRealmAuthenticator; import org.apache.shiro.mgt.DefaultSecurityManager; import org.apache.shiro.realm.Realm; import org.apache.shiro.subject.Subject; import org.junit.Test; import java.util.Collections; import java.util.HashSet; import java.util.Set; /** * @author AltEnter * @create 2019-01-21 16:26 * @desc **/ public class TestDemo { @Test public void test01() { // 01 获取Realm对象 MyRealm01 myRealm01 = new MyRealm01(); MyRealm02 myRealm02 = new MyRealm02(); // 02 获取SecurityManager对象 DefaultSecurityManager defaultSecurityManager = new DefaultSecurityManager(); // 03 设置SecurityManager对象的认证策略 ModularRealmAuthenticator modularRealmAuthenticator = new ModularRealmAuthenticator(); modularRealmAuthenticator.setAuthenticationStrategy(new FirstSuccessfulStrategy()); // modularRealmAuthenticator.setAuthenticationStrategy(new AllSuccessfulStrategy()); defaultSecurityManager.setAuthenticator(modularRealmAuthenticator); // 04 设置SecurityManager的Realm // defaultSecurityManager.setRealm(myRealm01); // defaultSecurityManager.setRealm(myRealm02); Set<Realm> realmHashSet = new HashSet<Realm>(); realmHashSet.add(myRealm01); realmHashSet.add(myRealm02); defaultSecurityManager.setRealms(realmHashSet); SecurityUtils.setSecurityManager(defaultSecurityManager); Subject subject = SecurityUtils.getSubject(); UsernamePasswordToken token = new UsernamePasswordToken("fury1", "111111"); // UsernamePasswordToken token = new UsernamePasswordToken("fury2", "222222"); subject.login(token); System.out.println(String.format("认证结果为:%s", subject.isAuthenticated())); subject.logout(); System.out.println(String.format("认证结果为:%s", subject.isAuthenticated())); } }