1. 程式人生 > >從頭開始——SSM+Shiro實現登陸的安全認證

從頭開始——SSM+Shiro實現登陸的安全認證

Shiro功能概述:

 Shiro是一個功能強大且靈活的開源安全框架,可以清晰地處理身份驗證,授權,企業會話管理和加密。

  • 身份驗證有時也稱為“登入”,這是證明使用者是他們所說的人的行為。

  • 授權訪問控制的過程,即確定“誰”可以訪問“什麼”。

  • 會話管理即使在非Web或EJB應用程式中,也可以管理特定於使用者的會話。

  • 加密使用加密演算法保持資料安全,同時仍然易於使用。

Shiro的簡要概述:

我們傳統的登入認證方式是,從前端頁面獲取到使用者輸入的賬號和密碼之後,傳到後臺直接去資料庫查詢賬號和密碼是否匹配和存在,如果匹配和存在就登入成功,沒有就提示登陸失敗

而shiro的認證方式則是,從前端頁面獲取到使用者輸入的賬號和密碼之後,傳入給一個UsernamePasswordToken物件也就是令牌,

然後再把令牌傳給subject,subject會呼叫自定義的 realm,

realm做的事情就是用前端使用者輸入的使用者名稱,去資料庫查詢出一條記錄(只用使用者名稱去查,查詢拿到返回使用者名稱和密碼),然後再把兩個密碼進行對比,不一致就跑出異常

也就是說如果subject.login(token);沒有丟擲異常,就表示使用者名稱和密碼是匹配的,那麼就表示登入成功!

今天要做的就是在SSM專案中整合Shiro安全框架實現簡單的登陸認證!

廢話不多說,開幹!

第一步,先看看基本的專案結構(前臺頁面和靜態資源我已經匯入了,原始碼會放在最後)

然後新增maven依賴

<!--宣告版本-->
  <properties>
    <servlet.version>3.1.0</servlet.version>
    <jsp.version>2.3.1</jsp.version>
    <jstl.version>1.2</jstl.version>
    <mybatis.version>3.4.6</mybatis.version>
    <mybatis-spring.version>1.3.2</mybatis-spring.version>
    <spring.version>4.3.13.RELEASE</spring.version>
    <mysql.version>5.1.40</mysql.version>
    <log4j.version>1.2.17</log4j.version>
    <shiro.version>1.3.2</shiro.version>
  </properties>

  <dependencies>
     <!--新增shiro依賴-->
    <dependency>
      <groupId>org.apache.shiro</groupId>
      <artifactId>shiro-all</artifactId>
      <version>${shiro.version}</version>
    </dependency>

  <!-- 加入servlet的依賴 -->
  <dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>javax.servlet-api</artifactId>
    <version>${servlet.version}</version>
    <scope>provided</scope>
  </dependency>

  <!-- 加入jsp的依賴 -->
  <dependency>
    <groupId>javax.servlet.jsp</groupId>
    <artifactId>javax.servlet.jsp-api</artifactId>
    <version>${jsp.version}</version>
    <scope>provided</scope>
  </dependency>

  <!-- 加入jstl的依賴 -->
  <dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>jstl</artifactId>
    <version>${jstl.version}</version>
  </dependency>
  <!-- 加入mybtais的依賴 -->
  <dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis</artifactId>
    <version>${mybatis.version}</version>
  </dependency>

  <!-- 加入mybtais-spring的依賴 -->
  <dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis-spring</artifactId>
    <version>${mybatis-spring.version}</version>
  </dependency>
  <!-- 加入spring的依賴 -->
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-aspects</artifactId>
    <version>${spring.version}</version>
  </dependency>
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-aop</artifactId>
    <version>${spring.version}</version>
  </dependency>
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context</artifactId>
    <version>${spring.version}</version>
  </dependency>
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-core</artifactId>
    <version>${spring.version}</version>
  </dependency>
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-expression</artifactId>
    <version>${spring.version}</version>
  </dependency>
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-jdbc</artifactId>
    <version>${spring.version}</version>
  </dependency>
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-tx</artifactId>
    <version>${spring.version}</version>
  </dependency>
  <!-- 加入springmvc的依賴 -->
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</artifactId>
    <version>${spring.version}</version>
  </dependency>
  <!-- 加入mysql的依賴 -->
  <dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>${mysql.version}</version>
  </dependency>
  <!-- 加入log4j的依賴 -->
  <dependency>
    <groupId>log4j</groupId>
    <artifactId>log4j</artifactId>
    <version>${log4j.version}</version>
  </dependency>
  <dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpclient</artifactId>
    <version>4.5.3</version>
  </dependency>
  </dependencies>

然後開始建立對應的介面和類

(關於專案中的實體類和mapper檔案還有mapping檔案的自動生成方法參見這裡)

首先在realm中建立一個UserRealm繼承AuthorizingRealm並重新它的兩個方法

package com.sixmac.realm;

import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;

public class UserRealm extends AuthorizingRealm {

    /**
     * 認證的時候回撥
     * @param authenticationToken
     * @return
     * @throws AuthenticationException
     */
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
        return null;
    }




    /**
     * 授權的時候回撥
     * @param principalCollection
     * @return
     */
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        return null;
    }


}

然後是shiro的配置檔案application-shiro.xml:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:mvc="http://www.springframework.org/schema/mvc"
	xsi:schemaLocation="http://www.springframework.org/schema/beans 
	http://www.springframework.org/schema/beans/spring-beans.xsd
	http://www.springframework.org/schema/context
	http://www.springframework.org/schema/context/spring-context.xsd
	http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">

	<!-- 掃描realm -->
	<context:component-scan
		base-package="com.sixmac.realm"></context:component-scan>
	<!-- 建立憑證管理器 -->

	<!--MD5加密-->
	<!--<bean id="credentialsMatcher"
		class="org.apache.shiro.authc.credential.HashedCredentialsMatcher">
		&lt;!&ndash;<property name="hashAlgorithmName" value="MD5"></property>
		<property name="hashIterations" value="2"></property>&ndash;&gt;
	</bean>-->

	<!-- 建立 userRealm -->
	<bean id="userRealm" class="com.sixmac.realm.UserRealm">
		<!--<property name="credentialsMatcher" ref="credentialsMatcher"></property>-->
	</bean>

	<!-- securityManager安全管理器 -->
	<bean id="securityManager"
		class="org.apache.shiro.web.mgt.DefaultWebSecurityManager">
		<property name="realm" ref="userRealm"></property>
	</bean>




	<!-- Shiro 的Web過濾器 id必須和web.xml裡面的shiroFilter的 targetBeanName的值一樣 -->
	<bean id="shiroFilter"
		class="org.apache.shiro.spring.web.ShiroFilterFactoryBean">
		<!-- Shiro的核心安全介面,這個屬性是必須的 -->
		<property name="securityManager" ref="securityManager" />
		<!-- 要求登入時的連結(登入頁面地址),非必須的屬性,預設會自動尋找Web工程根目錄下的"/login.jsp"頁面 -->
		<property name="loginUrl" value="/login/toLogin" />
		<!-- 登入成功後要跳轉的連線(本例中此屬性用不到,因為登入成功後的處理邏輯在UserController裡硬編碼) -->
		<!-- <property name="successUrl" value="/success.action"/> -->
		<!-- 使用者訪問未對其授權的資源時,所顯示的連線 -->
		<property name="unauthorizedUrl" value="/refuse.jsp" />
		<!-- 過慮器鏈定義,從上向下順序執行,一般將/**放在最下邊 -->
		<property name="filterChainDefinitions">
			<value>
				<!-- /** = authc 所有url都必須認證通過才可以訪問 -->
				/index.jsp*=anon
				/login/toLogin*=anon
				/login/login*=anon
				<!-- 如果使用者訪問user/logout就使用Shiro登出session -->
				/login/logout = logout
				<!-- /** = anon所有url都不可以匿名訪問 -->
				<!-- /** = authc -->
				<!-- /*/* = authc -->
				<!-- /** = authc所有url都不可以匿名訪問 必須放到最後面 -->
				/** = authc
			</value>
		</property>
	</bean>



</beans>

然後是配置檔案:application-dao.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
	xsi:schemaLocation="http://www.springframework.org/schema/beans 
	http://www.springframework.org/schema/beans/spring-beans.xsd
	http://www.springframework.org/schema/context
	http://www.springframework.org/schema/context/spring-context.xsd
	http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">


	<!-- 解析db.properties 因為 db.properties裡面有username=root 如果在下面的資料來源中使用${username}它取到的是當前系統的登陸名 
		如果要使用db.properties裡面的username必須加system-properties-mode="FALLBACK"這個屬性 -->
	<context:property-placeholder location="classpath:db.properties"
		system-properties-mode="FALLBACK" />

	<!-- 配置資料來源 -->
	<bean id="dataSource"
		class="org.springframework.jdbc.datasource.DriverManagerDataSource">
		<property name="driverClassName" value="${driver}" />
		<property name="url" value="${url}" />
		<property name="username" value="${username}" />
		<property name="password" value="${password}" />
	</bean>

	<!-- 配置sqlSessinoFactory -->
	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
		<property name="dataSource" ref="dataSource"></property>
		<!--mybatis的配置檔案 -->
		<property name="configLocation" value="classpath:mybatis.cfg.xml" />
		<!--掃描 XXXmapper.xml對映檔案,配置掃描的路徑 這個不配置也可以,但是不配置的話,下面dao和xxxMapper.xml必須放在同一個包下面 -->
		<property name="mapperLocations">
			<array>
				<value>classpath:com/sixmac/mapping/*.xml</value>
			</array>
		</property>
	</bean>

	<!-- Mapper介面所在包名,Spring會自動查詢之中的類 -->
	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<!-- 以下的配置只能指向一個包 如果配置多個呢 就在包的中間加, -->
		<property name="basePackage" value="com.sixmac.mapper" />
		<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
	</bean>

</beans>

然後是application-service.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
	xmlns:aop="http://www.springframework.org/schema/aop" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans 
	http://www.springframework.org/schema/beans/spring-beans.xsd
	http://www.springframework.org/schema/context
	http://www.springframework.org/schema/context/spring-context.xsd
	http://www.springframework.org/schema/tx
	http://www.springframework.org/schema/tx/spring-tx.xsd
	http://www.springframework.org/schema/aop
	http://www.springframework.org/schema/aop/spring-aop.xsd">


	<!-- 掃描service -->
	<context:component-scan base-package="com.sixmac.service.impl"></context:component-scan>


	<!-- 1,配置事務 -->
	<bean id="transactionManager"
		class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource"></property>
	</bean>

	<!-- 2 宣告事務切面 -->
	<tx:advice id="txAdvice" transaction-manager="transactionManager">
		<tx:attributes>
			<tx:method name="add*" propagation="REQUIRED" />
			<tx:method name="insert*" propagation="REQUIRED" />
			<tx:method name="save*" propagation="REQUIRED" />
			<tx:method name="start*" propagation="REQUIRED" />
			<tx:method name="delete*" propagation="REQUIRED" />
			<tx:method name="update*" propagation="REQUIRED" />
			<tx:method name="load*" propagation="REQUIRED" read-only="true" />
			<tx:method name="get*" propagation="REQUIRED" read-only="true" />
			<tx:method name="*" propagation="REQUIRED" read-only="true" />
		</tx:attributes>
	</tx:advice>

	<!-- 進行aop的配置 -->
	<aop:config>
		<!-- 宣告切入點 -->
		<aop:pointcut expression="execution(* com.sixmac.service.impl.*.*(..))" id="pc1" />
		<!--<aop:pointcut expression="execution(* com.sixmac.service.impl.*.*(..))" id="pc2" />-->
		<aop:advisor advice-ref="txAdvice" pointcut-ref="pc1" />
		<!--<aop:advisor advice-ref="txAdvice" pointcut-ref="pc2" />-->
	</aop:config>

</beans>

applicationContext.xml:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
	xsi:schemaLocation="http://www.springframework.org/schema/beans 
	http://www.springframework.org/schema/beans/spring-beans.xsd
	http://www.springframework.org/schema/context
	http://www.springframework.org/schema/context/spring-context.xsd
	http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">
	<!-- 引入application-dao.xml application-service.xml -->
	<import resource="classpath:application-dao.xml" />
	<import resource="classpath:application-service.xml" />
	<import resource="classpath:application-shiro.xml"/>
</beans>

springmvc.xml:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
	xsi:schemaLocation="http://www.springframework.org/schema/beans 
	http://www.springframework.org/schema/beans/spring-beans.xsd
	http://www.springframework.org/schema/context
	http://www.springframework.org/schema/context/spring-context.xsd
	http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">

	<!-- 掃描controller -->
	<context:component-scan base-package="com.sixmac.controller"></context:component-scan>
	<!-- 配置對映器和介面卡 -->
	<mvc:annotation-driven></mvc:annotation-driven>
	
	<!-- 配置檢視解析器 -->
	<bean
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/WEB-INF/jsp/"></property>
		<property name="suffix" value=".jsp"></property>
	</bean>

	<!-- 攔截器 -->
	<!-- <mvc:interceptors>
		<mvc:interceptor>
			<mvc:mapping path="/**" />
			<mvc:exclude-mapping path="/user/toLogin*" />
			<mvc:exclude-mapping path="/user/login*" />
			<bean class="com.sixmac.interceptor.LoginInterceptor"></bean>
		</mvc:interceptor>
	</mvc:interceptors> -->

	<!-- 過濾靜態資源 -->
	<mvc:default-servlet-handler />

</beans>

mybatis.cfg.xml:

<?xml version="1.0" encoding="UTF-8"?>
<!-- 導標頭檔案 -->
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">

<!-- mybatis的核心配置檔案 -->
<configuration>
	<!-- 配置日誌的輸出方式 -->
	<settings>
		<setting name="logImpl" value="LOG4J" />
	</settings>
	<!-- 別外優化 -->
	<typeAliases>
		<package name="com.sixmac.domain"/>
	</typeAliases>
	<!--&lt;!&ndash; 分頁外掛 &ndash;&gt;
	<plugins>
		<plugin interceptor="com.github.pagehelper.PageInterceptor"></plugin>
	</plugins>-->
</configuration>

dp.properties:

driver=com.mysql.jdbc.Driver
url=jdbc\:mysql\://localhost\:3306/manager
username=root
password=root

web.xml:

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://java.sun.com/xml/ns/javaee"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
         id="WebApp_ID" version="3.0">
  <display-name>erp1</display-name>

  <!-- 編碼過濾器開始 -->
  <filter>
    <filter-name>encodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
      <param-name>encoding</param-name>
      <param-value>UTF-8</param-value>
    </init-param>
    <init-param>
      <param-name>forceEncoding</param-name>
      <param-value>true</param-value>
    </init-param>
  </filter>

  <filter-mapping>
    <filter-name>encodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
  <!-- 編碼過濾器結束 -->

  <!--過濾靜態資源,一定要放在Spring的Dispatcher的前面-->
  <servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>/resources/*</url-pattern>
  </servlet-mapping>


  <!-- shiro整合開始 -->
  <!-- shiro過慮器,DelegatingFilterProxy通過代理模式將spring容器中的bean和filter關聯起來 -->
  <filter>
    <filter-name>shiroFilter</filter-name>
    <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
    <!-- 設定true由servlet容器控制filter的生命週期 -->
    <init-param>
      <param-name>targetFilterLifecycle</param-name>
      <param-value>true</param-value>
    </init-param>
    <!-- 設定spring容器filter的bean id,如果不設定則找與filter-name一致的bean -->
    <init-param>
      <param-name>targetBeanName</param-name>
      <param-value>shiroFilter</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>shiroFilter</filter-name>
    <!-- 代表訪問springmvc【是springmvc的前端控制器的servlet的名字】這個Servlet時就啟用shiro的認證和授權 -->
    <servlet-name>springmvc</servlet-name>
    <!-- 攔截所有的url  包括 css js   image 等等 -->
    <!-- <url-pattern>/*</url-pattern> -->
  </filter-mapping>
  <!-- shiro整合結束 -->

  <!-- 配置spring的監聽器開始 -->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>
  <!-- 配置spring的監聽器結束 -->

  <!-- 配置前端控制器開始 -->
  <servlet>
    <servlet-name>springmvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:springmvc.xml</param-value>
    </init-param>
    <!--用來標記是否在專案啟動時就加在此Servlet,0或正數表示容器在應用啟動時就載入這個Servlet, 當是一個負數時或者沒有指定時,則指示容器在該servlet被選擇時才載入.正數值越小啟動優先值越高 -->
    <load-on-startup>1</load-on-startup>
  </servlet>
  <!--為DispatcherServlet建立對映 -->
  <servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <!-- 攔截所有請求,千萬注意是(/)而不是(/*) -->
    <url-pattern>/</url-pattern>
  </servlet-mapping>
  <!-- 配置前端控制器結束 -->

</web-app>

配置檔案沒問題的話就建立controller,設定頁面跳轉路徑與登陸請求路徑

package com.sixmac.controller;

import com.sixmac.domain.User;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.subject.Subject;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.servlet.http.HttpSession;

@Controller
@RequestMapping("login")
public class LoginController {


    @RequestMapping("toLogin")
    public String toLogin(){
        return "login.jsp";
    }

    @RequestMapping("login")
    public String login(String loginname, String password, Model model, HttpSession session){
        UsernamePasswordToken token = new UsernamePasswordToken(loginname, password);
        // 得到認證主體
        Subject subject = SecurityUtils.getSubject();

        try {
            //這裡會載入自定義的realm
            subject.login(token); //把令牌放到login裡面進行查詢,如果查詢賬號和密碼時候匹配,如果匹配就把user物件獲取出來,失敗就拋異常
            System.out.println("認證成功!");
            User user = (User) subject.getPrincipal();//獲取登入成功的使用者物件(以前是直接去service裡呼叫方法面查)
            session.setAttribute("user",user);//放入session
            return "/system/index.jsp";

        }catch (Exception e){
            model.addAttribute("error","使用者名稱密碼不匹配!");
            return "login.jsp";
        }

    }
}

然後在自定義的realm裡寫shiro登陸認證的方法

package com.sixmac.realm;

import com.sixmac.domain.User;
import com.sixmac.service.LoginService;
import org.apache.shiro.authc.*;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

@Component
public class UserRealm extends AuthorizingRealm {

    @Autowired
    private LoginService loginService;

    /**
     * 認證的時候回撥
     * @param token
     * @return
     * @throws AuthenticationException
     */
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
        UsernamePasswordToken userToken = (UsernamePasswordToken) token;//獲取令牌(裡面存放new UsernamePasswordToken的時候放入的賬號和密碼)
        String loginname = userToken.getUsername();
        User user = loginService.login(loginname);//去資料庫查詢使用者名稱是否存在,如果存在返回物件(賬號和密碼都有的物件)
        if (user!=null){
            //引數1.使用者認證的物件(Controller中subject.getPrincipal()方法返回的物件),
            //引數2.從資料庫根據使用者名稱查詢到的使用者密碼
            //引數3.把當前自定義的realm物件傳給SimpleAuthenticationInfo,在配置檔案需要注入
            SimpleAuthenticationInfo info = new SimpleAuthenticationInfo(user, user.getPassword(), this.getName());
            return info;
        }else {
            return null;
        }
    }

    /**
     * 授權的時候回撥
     * @param principalCollection
     * @return
     */
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        return null;
    }


}

到這裡基本上就完成了shiro的登陸認證,核心程式碼其實就只有這麼多,當然這只是最簡單的一部分,shiro還有很多其他強大的功能,這裡就不細說了

The end!!!