這裏用的是SpringMVC-3.2.4和Shiro-1.2.2,示例代碼如下
首先是web.xml
- <?xml version="1.0" encoding="UTF-8"?>
- <web-app version="2.5"
- xmlns="http://java.sun.com/xml/ns/javaee"
- xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
- xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
- http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
- <!-- Web容器加載順序ServletContext--context-param--listener--filter--servlet -->
- <!-- 指定Spring的配置文件 -->
- <!-- 否則Spring會默認從WEB-INF下尋找配置文件,contextConfigLocation屬性是Spring內部固定的 -->
- <!-- 通過ContextLoaderListener的父類ContextLoader的第120行發現CONFIG_LOCATION_PARAM固定爲contextConfigLocation -->
- <context-param>
- <param-name>contextConfigLocation</param-name>
- <param-value>classpath:applicationContext.xml</param-value>
- </context-param>
- <!-- 防止發生java.beans.Introspector內存泄露,應將它配置在ContextLoaderListener的前面 -->
- <!-- 詳細描述見http://blog.csdn.net/jadyer/article/details/11991457 -->
- <listener>
- <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
- </listener>
- <!-- 實例化Spring容器 -->
- <!-- 應用啓動時,該監聽器被執行,它會讀取Spring相關配置文件,其默認會到WEB-INF中查找applicationContext.xml -->
- <!-- http://starscream.iteye.com/blog/1107036 -->
- <!-- http://www.davenkin.me/post/2012-10-18/40039948363 -->
- <!-- WebApplicationContextUtils.getWebApplicationContext() -->
- <listener>
- <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
- </listener>
- <!-- 解決亂碼問題 -->
- <!-- forceEncoding默認爲false,此時效果可大致理解爲request.setCharacterEncoding("UTF-8") -->
- <!-- forceEncoding=true後,可大致理解爲request.setCharacterEncoding("UTF-8")和response.setCharacterEncoding("UTF-8") -->
- <filter>
- <filter-name>SpringEncodingFilter</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>SpringEncodingFilter</filter-name>
- <url-pattern>/*</url-pattern>
- </filter-mapping>
- <!-- 配置Shiro過濾器,先讓Shiro過濾系統接收到的請求 -->
- <!-- 這裏filter-name必須對應applicationContext.xml中定義的<bean id="shiroFilter"/> -->
- <!-- 使用[/*]匹配所有請求,保證所有的可控請求都經過Shiro的過濾 -->
- <!-- 通常會將此filter-mapping放置到最前面(即其他filter-mapping前面),以保證它是過濾器鏈中第一個起作用的 -->
- <filter>
- <filter-name>shiroFilter</filter-name>
- <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
- <init-param>
- <!-- 該值缺省爲false,表示生命週期由SpringApplicationContext管理,設置爲true則表示由ServletContainer管理 -->
- <param-name>targetFilterLifecycle</param-name>
- <param-value>true</param-value>
- </init-param>
- </filter>
- <filter-mapping>
- <filter-name>shiroFilter</filter-name>
- <url-pattern>/*</url-pattern>
- </filter-mapping>
- <!-- SpringMVC核心分發器 -->
- <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:applicationContext.xml</param-value>
- </init-param>
- </servlet>
- <servlet-mapping>
- <servlet-name>SpringMVC</servlet-name>
- <url-pattern>/</url-pattern>
- </servlet-mapping>
- <!-- Session超時30分鐘(零或負數表示會話永不超時) -->
- <!--
- <session-config>
- <session-timeout>30</session-timeout>
- </session-config>
- -->
- <!-- 默認歡迎頁 -->
- <!-- Servlet2.5中可直接在此處執行Servlet應用,如<welcome-file>servlet/InitSystemParamServlet</welcome-file> -->
- <!-- 這裏使用了SpringMVC提供的<mvc:view-controller>標籤,實現了首頁隱藏的目的,詳見applicationContext.xml -->
- <!--
- <welcome-file-list>
- <welcome-file>login.jsp</welcome-file>
- </welcome-file-list>
- -->
- <error-page>
- <error-code>405</error-code>
- <location>/WEB-INF/405.html</location>
- </error-page>
- <error-page>
- <error-code>404</error-code>
- <location>/WEB-INF/404.jsp</location>
- </error-page>
- <error-page>
- <error-code>500</error-code>
- <location>/WEB-INF/500.jsp</location>
- </error-page>
- <error-page>
- <exception-type>java.lang.Throwable</exception-type>
- <location>/WEB-INF/500.jsp</location>
- </error-page>
- </web-app>
- <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
- <html>
- <head>
- <title>405.html</title>
- <meta http-equiv="content-type" content="text/html; charset=UTF-8">
- </head>
- <body>
- <font color="blue">
- Request method 'GET' not supported
- <br/><br/>
- The specified HTTP method is not allowed for the requested resource.
- </font>
- </body>
- </html>
- <%@ page language="java" pageEncoding="UTF-8"%>
- <script type="text/javascript">
- <!--
- function reloadVerifyCode(){
- document.getElementById('verifyCodeImage').setAttribute('src', '${pageContext.request.contextPath}/mydemo/getVerifyCodeImage');
- }
- //-->
- </script>
- <div style="color:red; font-size:22px;">${message_login}</div>
- <form action="<%=request.getContextPath()%>/mydemo/login" method="POST">
- 姓名:<input type="text" name="username"/><br/>
- 密碼:<input type="text" name="password"/><br/>
- 驗證:<input type="text" name="verifyCode"/>
-
- <img id="verifyCodeImage" onclick="reloadVerifyCode()" src="<%=request.getContextPath()%>/mydemo/getVerifyCodeImage"/><br/>
- <input type="submit" value="確認"/>
- </form>
- <%@ page language="java" pageEncoding="UTF-8"%>
- 普通用戶可訪問<a href="<%=request.getContextPath()%>/mydemo/getUserInfo" target="_blank">用戶信息頁面</a>
- <br/>
- <br/>
- 管理員可訪問<a href="<%=request.getContextPath()%>/admin/listUser.jsp" target="_blank">用戶列表頁面</a>
- <br/>
- <br/>
- <a href="<%=request.getContextPath()%>/mydemo/logout" target="_blank">Logout</a>
- <%@ page language="java" pageEncoding="UTF-8"%>
- This is listUser.jsp
- <br/>
- <br/>
- <a href="<%=request.getContextPath()%>/mydemo/logout" target="_blank">Logout</a>
- <%@ page language="java" pageEncoding="UTF-8"%>
- 當前登錄的用戶爲${currUser}
- <br/>
- <br/>
- <a href="<%=request.getContextPath()%>/mydemo/logout" target="_blank">Logout</a>
- #use Root for GobalConfig
- log4j.rootLogger=DEBUG,CONSOLE
- log4j.logger.java.sql=DEBUG
- log4j.logger.org.apache.shiro=DEBUG
- log4j.logger.org.apache.commons=DEBUG
- log4j.logger.org.springframework=DEBUG
- #use ConsoleAppender for ConsoleOut
- log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
- log4j.appender.CONSOLE.Threshold=DEBUG
- log4j.appender.CONSOLE.Target=System.out
- log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
- log4j.appender.CONSOLE.layout.ConversionPattern=[%d{yyyyMMdd HH:mm:ss}][%t][%C{1}.%M]%m%n
- <?xml version="1.0" encoding="UTF-8"?>
- <beans xmlns="http://www.springframework.org/schema/beans"
- xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
- xmlns:mvc="http://www.springframework.org/schema/mvc"
- xmlns:context="http://www.springframework.org/schema/context"
- xsi:schemaLocation="http://www.springframework.org/schema/beans
- http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
- http://www.springframework.org/schema/mvc
- http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
- http://www.springframework.org/schema/context
- http://www.springframework.org/schema/context/spring-context-3.2.xsd">
- <!-- 它背後註冊了很多用於解析註解的處理器,其中就包括<context:annotation-config/>配置的註解所使用的處理器 -->
- <!-- 所以配置了<context:component-scan base-package="">之後,便無需再配置<context:annotation-config> -->
- <context:component-scan base-package="com.jadyer"/>
- <!-- 啓用SpringMVC的註解功能,它會自動註冊HandlerMapping、HandlerAdapter、ExceptionResolver的相關實例 -->
- <mvc:annotation-driven/>
- <!-- 配置SpringMVC的視圖解析器 -->
- <!-- 其viewClass屬性的默認值就是org.springframework.web.servlet.view.JstlView -->
- <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
- <property name="prefix" value="/"/>
- <property name="suffix" value=".jsp"/>
- </bean>
- <!-- 默認訪問跳轉到登錄頁面(即定義無需Controller的url<->view直接映射) -->
- <mvc:view-controller path="/" view-name="forward:/login.jsp"/>
- <!-- 由於web.xml中設置是:由SpringMVC攔截所有請求,於是在讀取靜態資源文件的時候就會受到影響(說白了就是讀不到) -->
- <!-- 經過下面的配置,該標籤的作用就是:所有頁面中引用"/js/**"的資源,都會從"/resources/js/"裏面進行查找 -->
- <!-- 我們可以訪問http://IP:8080/xxx/js/my.css和http://IP:8080/xxx/resources/js/my.css對比出來 -->
- <mvc:resources mapping="/js/**" location="/resources/js/"/>
- <mvc:resources mapping="/css/**" location="/resources/css/"/>
- <mvc:resources mapping="/WEB-INF/**" location="/WEB-INF/"/>
- <!-- SpringMVC在超出上傳文件限制時,會拋出org.springframework.web.multipart.MaxUploadSizeExceededException -->
- <!-- 該異常是SpringMVC在檢查上傳的文件信息時拋出來的,而且此時還沒有進入到Controller方法中 -->
- <bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">
- <property name="exceptionMappings">
- <props>
- <!-- 遇到MaxUploadSizeExceededException異常時,自動跳轉到/WEB-INF/error_fileupload.jsp頁面 -->
- <prop key="org.springframework.web.multipart.MaxUploadSizeExceededException">WEB-INF/error_fileupload</prop>
- <!-- 處理其它異常(包括Controller拋出的) -->
- <prop key="java.lang.Throwable">WEB-INF/500</prop>
- </props>
- </property>
- </bean>
- <!-- 繼承自AuthorizingRealm的自定義Realm,即指定Shiro驗證用戶登錄的類爲自定義的ShiroDbRealm.java -->
- <bean id="myRealm" class="com.jadyer.realm.MyRealm"/>
- <!-- Shiro默認會使用Servlet容器的Session,可通過sessionMode屬性來指定使用Shiro原生Session -->
- <!-- 即<property name="sessionMode" value="native"/>,詳細說明見官方文檔 -->
- <!-- 這裏主要是設置自定義的單Realm應用,若有多個Realm,可使用'realms'屬性代替 -->
- <bean id="securityManager" class="org.apache.shiro.web.mgt.DefaultWebSecurityManager">
- <property name="realm" ref="myRealm"/>
- </bean>
- <!-- Shiro主過濾器本身功能十分強大,其強大之處就在於它支持任何基於URL路徑表達式的、自定義的過濾器的執行 -->
- <!-- Web應用中,Shiro可控制的Web請求必須經過Shiro主過濾器的攔截,Shiro對基於Spring的Web應用提供了完美的支持 -->
- <bean id="shiroFilter" class="org.apache.shiro.spring.web.ShiroFilterFactoryBean">
- <!-- Shiro的核心安全接口,這個屬性是必須的 -->
- <property name="securityManager" ref="securityManager"/>
- <!-- 要求登錄時的鏈接(可根據項目的URL進行替換),非必須的屬性,默認會自動尋找Web工程根目錄下的"/login.jsp"頁面 -->
- <property name="loginUrl" value="/"/>
- <!-- 登錄成功後要跳轉的連接(本例中此屬性用不到,因爲登錄成功後的處理邏輯在LoginController裏硬編碼爲main.jsp了) -->
- <!-- <property name="successUrl" value="/system/main"/> -->
- <!-- 用戶訪問未對其授權的資源時,所顯示的連接 -->
- <!-- 若想更明顯的測試此屬性可以修改它的值,如unauthor.jsp,然後用[玄玉]登錄後訪問/admin/listUser.jsp就看見瀏覽器會顯示unauthor.jsp -->
- <property name="unauthorizedUrl" value="/"/>
- <!-- Shiro連接約束配置,即過濾鏈的定義 -->
- <!-- 此處可配合我的這篇文章來理解各個過濾連的作用http://blog.csdn.net/jadyer/article/details/12172839 -->
- <!-- 下面value值的第一個'/'代表的路徑是相對於HttpServletRequest.getContextPath()的值來的 -->
- <!-- anon:它對應的過濾器裏面是空的,什麼都沒做,這裏.do和.jsp後面的*表示參數,比方說login.jsp?main這種 -->
- <!-- authc:該過濾器下的頁面必須驗證後才能訪問,它是Shiro內置的一個攔截器org.apache.shiro.web.filter.authc.FormAuthenticationFilter -->
- <property name="filterChainDefinitions">
- <value>
- /mydemo/login=anon
- /mydemo/getVerifyCodeImage=anon
- /main**=authc
- /user/info**=authc
- /admin/listUser**=authc,perms[admin:manage]
- </value>
- </property>
- </bean>
- <!-- 保證實現了Shiro內部lifecycle函數的bean執行 -->
- <bean id="lifecycleBeanPostProcessor" class="org.apache.shiro.spring.LifecycleBeanPostProcessor"/>
- <!-- 開啓Shiro的註解(如@RequiresRoles,@RequiresPermissions),需藉助SpringAOP掃描使用Shiro註解的類,並在必要時進行安全邏輯驗證 -->
- <!-- 配置以下兩個bean即可實現此功能 -->
- <!-- Enable Shiro Annotations for Spring-configured beans. Only run after the lifecycleBeanProcessor has run -->
- <!-- 由於本例中並未使用Shiro註解,故註釋掉這兩個bean(個人覺得將權限通過註解的方式硬編碼在程序中,查看起來不是很方便,沒必要使用) -->
- <!--
- <bean class="org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator" depends-on="lifecycleBeanPostProcessor"/>
- <bean class="org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor">
- <property name="securityManager" ref="securityManager"/>
- </bean>
- -->
- </beans>
- package com.jadyer.realm;
- import org.apache.commons.lang3.builder.ReflectionToStringBuilder;
- import org.apache.commons.lang3.builder.ToStringStyle;
- import org.apache.shiro.SecurityUtils;
- import org.apache.shiro.authc.AuthenticationException;
- import org.apache.shiro.authc.AuthenticationInfo;
- import org.apache.shiro.authc.AuthenticationToken;
- import org.apache.shiro.authc.SimpleAuthenticationInfo;
- import org.apache.shiro.authc.UsernamePasswordToken;
- import org.apache.shiro.authz.AuthorizationInfo;
- import org.apache.shiro.authz.SimpleAuthorizationInfo;
- import org.apache.shiro.realm.AuthorizingRealm;
- import org.apache.shiro.session.Session;
- import org.apache.shiro.subject.PrincipalCollection;
- import org.apache.shiro.subject.Subject;
- /**
- * 自定義的指定Shiro驗證用戶登錄的類
- * @see 在本例中定義了2個用戶:jadyer和玄玉,jadyer具有admin角色和admin:manage權限,玄玉不具有任何角色和權限
- * @create Sep 29, 2013 3:15:31 PM
- * @author 玄玉<http://blog.csdn.net/jadyer>
- */
- public class MyRealm extends AuthorizingRealm {
- /**
- * 爲當前登錄的Subject授予角色和權限
- * @see 經測試:本例中該方法的調用時機爲需授權資源被訪問時
- * @see 經測試:並且每次訪問需授權資源時都會執行該方法中的邏輯,這表明本例中默認並未啓用AuthorizationCache
- * @see 個人感覺若使用了Spring3.1開始提供的ConcurrentMapCache支持,則可靈活決定是否啓用AuthorizationCache
- * @see 比如說這裏從數據庫獲取權限信息時,先去訪問Spring3.1提供的緩存,而不使用Shior提供的AuthorizationCache
- */
- @Override
- protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals){
- //獲取當前登錄的用戶名,等價於(String)principals.fromRealm(this.getName()).iterator().next()
- String currentUsername = (String)super.getAvailablePrincipal(principals);
- // List<String> roleList = new ArrayList<String>();
- // List<String> permissionList = new ArrayList<String>();
- // //從數據庫中獲取當前登錄用戶的詳細信息
- // User user = userService.getByUsername(currentUsername);
- // if(null != user){
- // //實體類User中包含有用戶角色的實體類信息
- // if(null!=user.getRoles() && user.getRoles().size()>0){
- // //獲取當前登錄用戶的角色
- // for(Role role : user.getRoles()){
- // roleList.add(role.getName());
- // //實體類Role中包含有角色權限的實體類信息
- // if(null!=role.getPermissions() && role.getPermissions().size()>0){
- // //獲取權限
- // for(Permission pmss : role.getPermissions()){
- // if(!StringUtils.isEmpty(pmss.getPermission())){
- // permissionList.add(pmss.getPermission());
- // }
- // }
- // }
- // }
- // }
- // }else{
- // throw new AuthorizationException();
- // }
- // //爲當前用戶設置角色和權限
- // SimpleAuthorizationInfo simpleAuthorInfo = new SimpleAuthorizationInfo();
- // simpleAuthorInfo.addRoles(roleList);
- // simpleAuthorInfo.addStringPermissions(permissionList);
- SimpleAuthorizationInfo simpleAuthorInfo = new SimpleAuthorizationInfo();
- //實際中可能會像上面註釋的那樣從數據庫取得
- if(null!=currentUsername && "jadyer".equals(currentUsername)){
- //添加一個角色,不是配置意義上的添加,而是證明該用戶擁有admin角色
- simpleAuthorInfo.addRole("admin");
- //添加權限
- simpleAuthorInfo.addStringPermission("admin:manage");
- System.out.println("已爲用戶[jadyer]賦予了[admin]角色和[admin:manage]權限");
- return simpleAuthorInfo;
- }else if(null!=currentUsername && "玄玉".equals(currentUsername)){
- System.out.println("當前用戶[玄玉]無授權");
- return simpleAuthorInfo;
- }
- //若該方法什麼都不做直接返回null的話,就會導致任何用戶訪問/admin/listUser.jsp時都會自動跳轉到unauthorizedUrl指定的地址
- //詳見applicationContext.xml中的<bean id="shiroFilter">的配置
- return null;
- }
- /**
- * 驗證當前登錄的Subject
- * @see 經測試:本例中該方法的調用時機爲LoginController.login()方法中執行Subject.login()時
- */
- @Override
- protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authcToken) throws AuthenticationException {
- //獲取基於用戶名和密碼的令牌
- //實際上這個authcToken是從LoginController裏面currentUser.login(token)傳過來的
- //兩個token的引用都是一樣的,本例中是org.apache.shiro.authc.UsernamePasswordToken@33799a1e
- UsernamePasswordToken token = (UsernamePasswordToken)authcToken;
- System.out.println("驗證當前Subject時獲取到token爲" + ReflectionToStringBuilder.toString(token, ToStringStyle.MULTI_LINE_STYLE));
- // User user = userService.getByUsername(token.getUsername());
- // if(null != user){
- // AuthenticationInfo authcInfo = new SimpleAuthenticationInfo(user.getUsername(), user.getPassword(), user.getNickname());
- // this.setSession("currentUser", user);
- // return authcInfo;
- // }else{
- // return null;
- // }
- //此處無需比對,比對的邏輯Shiro會做,我們只需返回一個和令牌相關的正確的驗證信息
- //說白了就是第一個參數填登錄用戶名,第二個參數填合法的登錄密碼(可以是從數據庫中取到的,本例中爲了演示就硬編碼了)
- //這樣一來,在隨後的登錄頁面上就只有這裏指定的用戶和密碼才能通過驗證
- if("jadyer".equals(token.getUsername())){
- AuthenticationInfo authcInfo = new SimpleAuthenticationInfo("jadyer", "jadyer", this.getName());
- this.setSession("currentUser", "jadyer");
- return authcInfo;
- }else if("玄玉".equals(token.getUsername())){
- AuthenticationInfo authcInfo = new SimpleAuthenticationInfo("玄玉", "xuanyu", this.getName());
- this.setSession("currentUser", "玄玉");
- return authcInfo;
- }
- //沒有返回登錄用戶名對應的SimpleAuthenticationInfo對象時,就會在LoginController中拋出UnknownAccountException異常
- return null;
- }
- /**
- * 將一些數據放到ShiroSession中,以便於其它地方使用
- * @see 比如Controller,使用時直接用HttpSession.getAttribute(key)就可以取到
- */
- private void setSession(Object key, Object value){
- Subject currentUser = SecurityUtils.getSubject();
- if(null != currentUser){
- Session session = currentUser.getSession();
- System.out.println("Session默認超時時間爲[" + session.getTimeout() + "]毫秒");
- if(null != session){
- session.setAttribute(key, value);
- }
- }
- }
- }
- package com.jadyer.controller;
- import java.awt.Color;
- import java.awt.image.BufferedImage;
- import java.io.IOException;
- import javax.imageio.ImageIO;
- import javax.servlet.http.HttpServletRequest;
- import javax.servlet.http.HttpServletResponse;
- import org.apache.commons.lang3.StringUtils;
- import org.apache.commons.lang3.builder.ReflectionToStringBuilder;
- import org.apache.commons.lang3.builder.ToStringStyle;
- import org.apache.shiro.SecurityUtils;
- import org.apache.shiro.authc.AuthenticationException;
- import org.apache.shiro.authc.ExcessiveAttemptsException;
- import org.apache.shiro.authc.IncorrectCredentialsException;
- import org.apache.shiro.authc.LockedAccountException;
- import org.apache.shiro.authc.UnknownAccountException;
- import org.apache.shiro.authc.UsernamePasswordToken;
- import org.apache.shiro.subject.Subject;
- import org.apache.shiro.web.util.WebUtils;
- import org.springframework.stereotype.Controller;
- import org.springframework.web.bind.annotation.RequestMapping;
- import org.springframework.web.bind.annotation.RequestMethod;
- import org.springframework.web.servlet.view.InternalResourceViewResolver;
- import com.jadyer.util.VerifyCodeUtil;
- /**
- * 本例中用到的jar文件如下
- * @see aopalliance.jar
- * @see commons-lang3-3.1.jar
- * @see commons-logging-1.1.2.jar
- * @see log4j-1.2.17.jar
- * @see shiro-all-1.2.2.jar
- * @see slf4j-api-1.7.5.jar
- * @see slf4j-log4j12-1.7.5.jar
- * @see spring-aop-3.2.4.RELEASE.jar
- * @see spring-beans-3.2.4.RELEASE.jar
- * @see spring-context-3.2.4.RELEASE.jar
- * @see spring-core-3.2.4.RELEASE.jar
- * @see spring-expression-3.2.4.RELEASE.jar
- * @see spring-jdbc-3.2.4.RELEASE.jar
- * @see spring-oxm-3.2.4.RELEASE.jar
- * @see spring-tx-3.2.4.RELEASE.jar
- * @see spring-web-3.2.4.RELEASE.jar
- * @see spring-webmvc-3.2.4.RELEASE.jar
- * @create Sep 30, 2013 11:10:06 PM
- * @author 玄玉<http://blog.csdn.net/jadyer>
- */
- @Controller
- @RequestMapping("mydemo")
- public class LoginController {
- /**
- * 獲取驗證碼圖片和文本(驗證碼文本會保存在HttpSession中)
- */
- @RequestMapping("/getVerifyCodeImage")
- public void getVerifyCodeImage(HttpServletRequest request, HttpServletResponse response) throws IOException {
- //設置頁面不緩存
- response.setHeader("Pragma", "no-cache");
- response.setHeader("Cache-Control", "no-cache");
- response.setDateHeader("Expires", 0);
- String verifyCode = VerifyCodeUtil.generateTextCode(VerifyCodeUtil.TYPE_NUM_ONLY, 4, null);
- //將驗證碼放到HttpSession裏面
- request.getSession().setAttribute("verifyCode", verifyCode);
- System.out.println("本次生成的驗證碼爲[" + verifyCode + "],已存放到HttpSession中");
- //設置輸出的內容的類型爲JPEG圖像
- response.setContentType("image/jpeg");
- BufferedImage bufferedImage = VerifyCodeUtil.generateImageCode(verifyCode, 90, 30, 3, true, Color.WHITE, Color.BLACK, null);
- //寫給瀏覽器
- ImageIO.write(bufferedImage, "JPEG", response.getOutputStream());
- }
- /**
- * 用戶登錄
- */
- @RequestMapping(value="/login", method=RequestMethod.POST)
- public String login(HttpServletRequest request){
- String resultPageURL = InternalResourceViewResolver.FORWARD_URL_PREFIX + "/";
- String username = request.getParameter("username");
- String password = request.getParameter("password");
- //獲取HttpSession中的驗證碼
- String verifyCode = (String)request.getSession().getAttribute("verifyCode");
- //獲取用戶請求表單中輸入的驗證碼
- String submitCode = WebUtils.getCleanParam(request, "verifyCode");
- System.out.println("用戶[" + username + "]登錄時輸入的驗證碼爲[" + submitCode + "],HttpSession中的驗證碼爲[" + verifyCode + "]");
- if (StringUtils.isEmpty(submitCode) || !StringUtils.equals(verifyCode, submitCode.toLowerCase())){
- request.setAttribute("message_login", "驗證碼不正確");
- return resultPageURL;
- }
- UsernamePasswordToken token = new UsernamePasswordToken(username, password);
- token.setRememberMe(true);
- System.out.println("爲了驗證登錄用戶而封裝的token爲" + ReflectionToStringBuilder.toString(token, ToStringStyle.MULTI_LINE_STYLE));
- //獲取當前的Subject
- Subject currentUser = SecurityUtils.getSubject();
- try {
- //在調用了login方法後,SecurityManager會收到AuthenticationToken,並將其發送給已配置的Realm執行必須的認證檢查
- //每個Realm都能在必要時對提交的AuthenticationTokens作出反應
- //所以這一步在調用login(token)方法時,它會走到MyRealm.doGetAuthenticationInfo()方法中,具體驗證方式詳見此方法
- System.out.println("對用戶[" + username + "]進行登錄驗證..驗證開始");
- currentUser.login(token);
- System.out.println("對用戶[" + username + "]進行登錄驗證..驗證通過");
- resultPageURL = "main";
- }catch(UnknownAccountException uae){
- System.out.println("對用戶[" + username + "]進行登錄驗證..驗證未通過,未知賬戶");
- request.setAttribute("message_login", "未知賬戶");
- }catch(IncorrectCredentialsException ice){
- System.out.println("對用戶[" + username + "]進行登錄驗證..驗證未通過,錯誤的憑證");
- request.setAttribute("message_login", "密碼不正確");
- }catch(LockedAccountException lae){
- System.out.println("對用戶[" + username + "]進行登錄驗證..驗證未通過,賬戶已鎖定");
- request.setAttribute("message_login", "賬戶已鎖定");
- }catch(ExcessiveAttemptsException eae){
- System.out.println("對用戶[" + username + "]進行登錄驗證..驗證未通過,錯誤次數過多");
- request.setAttribute("message_login", "用戶名或密碼錯誤次數過多");
- }catch(AuthenticationException ae){
- //通過處理Shiro的運行時AuthenticationException就可以控制用戶登錄失敗或密碼錯誤時的情景
- System.out.println("對用戶[" + username + "]進行登錄驗證..驗證未通過,堆棧軌跡如下");
- ae.printStackTrace();
- request.setAttribute("message_login", "用戶名或密碼不正確");
- }
- //驗證是否登錄成功
- if(currentUser.isAuthenticated()){
- System.out.println("用戶[" + username + "]登錄認證通過(這裏可以進行一些認證通過後的一些系統參數初始化操作)");
- }else{
- token.clear();
- }
- return resultPageURL;
- }
- /**
- * 用戶登出
- */
- @RequestMapping("/logout")
- public String logout(HttpServletRequest request){
- SecurityUtils.getSubject().logout();
- return InternalResourceViewResolver.REDIRECT_URL_PREFIX + "/";
- }
- }
- package com.jadyer.controller;
- import javax.servlet.http.HttpServletRequest;
- import org.springframework.stereotype.Controller;
- import org.springframework.web.bind.annotation.RequestMapping;
- @Controller
- @RequestMapping("mydemo")
- public class UserController {
- @RequestMapping(value="/getUserInfo")
- public String getUserInfo(HttpServletRequest request){
- String currentUser = (String)request.getSession().getAttribute("currentUser");
- System.out.println("當前登錄的用戶爲[" + currentUser + "]");
- request.setAttribute("currUser", currentUser);
- return "/user/info";
- }
- }
- package com.jadyer.util;
- import java.awt.Color;
- import java.awt.Font;
- import java.awt.Graphics;
- import java.awt.image.BufferedImage;
- import java.util.Random;
- /**
- * 驗證碼生成器
- * @see --------------------------------------------------------------------------------------------------------------
- * @see 可生成數字、大寫、小寫字母及三者混合類型的驗證碼
- * @see 支持自定義驗證碼字符數量,支持自定義驗證碼圖片的大小,支持自定義需排除的特殊字符,支持自定義干擾線的數量,支持自定義驗證碼圖文顏色
- * @see --------------------------------------------------------------------------------------------------------------
- * @see 另外,給Shiro加入驗證碼有多種方式,也可以通過繼承修改FormAuthenticationFilter類,通過Shiro去驗證驗證碼
- * @see 而這裏既然使用了SpringMVC,也爲了簡化操作,就使用此工具生成驗證碼,並在Controller中處理驗證碼的校驗
- * @see --------------------------------------------------------------------------------------------------------------
- * @create Sep 29, 2013 4:23:13 PM
- * @author 玄玉<http://blog.csdn.net/jadyer>
- */
- public class VerifyCodeUtil {
- /**
- * 驗證碼類型爲僅數字,即0~9
- */
- public static final int TYPE_NUM_ONLY = 0;
- /**
- * 驗證碼類型爲僅字母,即大小寫字母混合
- */
- public static final int TYPE_LETTER_ONLY = 1;
- /**
- * 驗證碼類型爲數字和大小寫字母混合
- */
- public static final int TYPE_ALL_MIXED = 2;
- /**
- * 驗證碼類型爲數字和大寫字母混合
- */
- public static final int TYPE_NUM_UPPER = 3;
- /**
- * 驗證碼類型爲數字和小寫字母混合
- */
- public static final int TYPE_NUM_LOWER = 4;
- /**
- * 驗證碼類型爲僅大寫字母
- */
- public static final int TYPE_UPPER_ONLY = 5;
- /**
- * 驗證碼類型爲僅小寫字母
- */
- public static final int TYPE_LOWER_ONLY = 6;
- private VerifyCodeUtil(){}
- /**
- * 生成隨機顏色
- */
- private static Color generateRandomColor() {
- Random random = new Random();
- return new Color(random.nextInt(255), random.nextInt(255), random.nextInt(255));
- }
- /**
- * 生成圖片驗證碼
- * @param type 驗證碼類型,參見本類的靜態屬性
- * @param length 驗證碼字符長度,要求大於0的整數
- * @param excludeString 需排除的特殊字符
- * @param width 圖片寬度(注意此寬度若過小,容易造成驗證碼文本顯示不全,如4個字符的文本可使用85到90的寬度)
- * @param height 圖片高度
- * @param interLine 圖片中干擾線的條數
- * @param randomLocation 每個字符的高低位置是否隨機
- * @param backColor 圖片顏色,若爲null則表示採用隨機顏色
- * @param foreColor 字體顏色,若爲null則表示採用隨機顏色
- * @param lineColor 干擾線顏色,若爲null則表示採用隨機顏色
- * @return 圖片緩存對象
- */
- public static BufferedImage generateImageCode(int type, int length, String excludeString, int width, int height, int interLine, boolean randomLocation, Color backColor, Color foreColor, Color lineColor){
- String textCode = generateTextCode(type, length, excludeString);
- return generateImageCode(textCode, width, height, interLine, randomLocation, backColor, foreColor, lineColor);
- }
- /**
- * 生成驗證碼字符串
- * @param type 驗證碼類型,參見本類的靜態屬性
- * @param length 驗證碼長度,要求大於0的整數
- * @param excludeString 需排除的特殊字符(無需排除則爲null)
- * @return 驗證碼字符串
- */
- public static String generateTextCode(int type, int length, String excludeString){
- if(length <= 0){
- return "";
- }
- StringBuffer verifyCode = new StringBuffer();
- int i = 0;
- Random random = new Random();
- switch(type){
- case TYPE_NUM_ONLY:
- while(i < length){
- int t = random.nextInt(10);
- //排除特殊字符
- if(null==excludeString || excludeString.indexOf(t+"")<0) {
- verifyCode.append(t);
- i++;
- }
- }
- break;
- case TYPE_LETTER_ONLY:
- while(i < length){
- int t = random.nextInt(123);
- if((t>=97 || (t>=65&&t<=90)) && (null==excludeString||excludeString.indexOf((char)t)<0)){
- verifyCode.append((char)t);
- i++;
- }
- }
- break;
- case TYPE_ALL_MIXED:
- while(i < length){
- int t = random.nextInt(123);
- if((t>=97 || (t>=65&&t<=90) || (t>=48&&t<=57)) && (null==excludeString||excludeString.indexOf((char)t)<0)){
- verifyCode.append((char)t);
- i++;
- }
- }
- break;
- case TYPE_NUM_UPPER:
- while(i < length){
- int t = random.nextInt(91);
- if((t>=65 || (t>=48&&t<=57)) && (null==excludeString || excludeString.indexOf((char)t)<0)){
- verifyCode.append((char)t);
- i++;
- }
- }
- break;
- case TYPE_NUM_LOWER:
- while(i < length){
- int t = random.nextInt(123);
- if((t>=97 || (t>=48&&t<=57)) && (null==excludeString || excludeString.indexOf((char)t)<0)){
- verifyCode.append((char)t);
- i++;
- }
- }
- break;
- case TYPE_UPPER_ONLY:
- while(i < length){
- int t = random.nextInt(91);
- if((t >= 65) && (null==excludeString||excludeString.indexOf((char)t)<0)){
- verifyCode.append((char)t);
- i++;
- }
- }
- break;
- case TYPE_LOWER_ONLY:
- while(i < length){
- int t = random.nextInt(123);
- if((t>=97) && (null==excludeString||excludeString.indexOf((char)t)<0)){
- verifyCode.append((char)t);
- i++;
- }
- }
- break;
- }
- return verifyCode.toString();
- }
- /**
- * 已有驗證碼,生成驗證碼圖片
- * @param textCode 文本驗證碼
- * @param width 圖片寬度(注意此寬度若過小,容易造成驗證碼文本顯示不全,如4個字符的文本可使用85到90的寬度)
- * @param height 圖片高度
- * @param interLine 圖片中干擾線的條數
- * @param randomLocation 每個字符的高低位置是否隨機
- * @param backColor 圖片顏色,若爲null則表示採用隨機顏色
- * @param foreColor 字體顏色,若爲null則表示採用隨機顏色
- * @param lineColor 干擾線顏色,若爲null則表示採用隨機顏色
- * @return 圖片緩存對象
- */
- public static BufferedImage generateImageCode(String textCode, int width, int height, int interLine, boolean randomLocation, Color backColor, Color foreColor, Color lineColor){
- //創建內存圖像
- BufferedImage bufferedImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
- //獲取圖形上下文
- Graphics graphics = bufferedImage.getGraphics();
- //畫背景圖
- graphics.setColor(null==backColor ? generateRandomColor() : backColor);
- graphics.fillRect(0, 0, width, height);
- //畫干擾線
- Random random = new Random();
- if(interLine > 0){
- int x = 0, y = 0, x1 = width, y1 = 0;
- for(int i=0; i<interLine; i++){
- graphics.setColor(null==lineColor ? generateRandomColor() : lineColor);
- y = random.nextInt(height);
- y1 = random.nextInt(height);
- graphics.drawLine(x, y, x1, y1);
- }
- }
- //字體大小爲圖片高度的80%
- int fsize = (int)(height * 0.8);
- int fx = height - fsize;
- int fy = fsize;
- //設定字體
- graphics.setFont(new Font("Default", Font.PLAIN, fsize));
- //寫驗證碼字符
- for(int i=0; i<textCode.length(); i++){
- fy = randomLocation ? (int)((Math.random()*0.3+0.6)*height) : fy;
- graphics.setColor(null==foreColor ? generateRandomColor() : foreColor);
- //將驗證碼字符顯示到圖象中
- graphics.drawString(textCode.charAt(i)+"", fx, fy);
- fx += fsize * 0.9;
- }
- graphics.dispose();
- return bufferedImage;
- }
- }