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java项目首先要提的就是jar包了,Springsecurity的jar下载地址:http://static.springsource.org/spring-security/site/downloads.html。不过我的项目里的jar包比较旧点了,是从以前项目抽取出来的,我的工程结构图如下:
如果是maven项目则可以使用下面的pom.xml:
<dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <dependency> <groupId>commons-dbcp</groupId> <artifactId>commons-dbcp</artifactId> <version>1.4</version> </dependency> <!-- Log --> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.17</version> </dependency> <!-- Struts2 --> <dependency> <groupId>org.freemarker</groupId> <artifactId>freemarker</artifactId> <version>2.3.18</version> </dependency> <dependency> <groupId>org.apache.struts</groupId> <artifactId>struts2-core</artifactId> <version>2.3.16.3</version> </dependency> <dependency> <groupId>org.apache.struts</groupId> <artifactId>struts2-spring-plugin</artifactId> <version>2.3.16.3</version> </dependency> <!-- Spring --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>3.2.8.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>3.2.8.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>3.2.8.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>3.2.8.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>3.2.8.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-expression</artifactId> <version>3.2.8.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>3.2.8.RELEASE</version> </dependency> <dependency> <groupId>org.springframework.security</groupId> <artifactId>spring-security-core</artifactId> <version>3.2.4.RELEASE</version> </dependency> <dependency> <groupId>org.springframework.security</groupId> <artifactId>spring-security-web</artifactId> <version>3.2.4.RELEASE</version> </dependency> <dependency> <groupId>org.springframework.security</groupId> <artifactId>spring-security-config</artifactId> <version>3.2.4.RELEASE</version> </dependency> <!-- Mybatis --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.0.6</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.0.2</version> </dependency> <!-- Database --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.31</version> </dependency> <dependency> <groupId>taglibs</groupId> <artifactId>standard</artifactId> <version>1.1.2</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> </dependencies>
第一个实例:
第一个例子是最基本,最简单的,我第一次接触springsecurity时候觉得这个技术真惊艳,不过现在感觉也就那么回事了。
我首先编写的是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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5"> <display-name>SpringSecurityPrj</display-name> <context-param> <param-name>contextConfigLocation</param-name> <param-value> classpath:applicationContext*.xml </param-value> </context-param> <filter> <filter-name>springSecurityFilterChain</filter-name> <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class> </filter> <filter-mapping> <filter-name>springSecurityFilterChain</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app>
接下来编写的是applicationContext-security.xml文件:
<?xml version="1.0" encoding="UTF-8"?> <beans:beans xmlns="http://www.springframework.org/schema/security" xmlns:beans="http://www.springframework.org/schema/beans" 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-3.0.xsd http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-3.2.xsd"> <!-- 自动配置模式,拦截所有请求,有ROLE_USER才可以通过 --> <http auto-config="true"> <intercept-url pattern="/**" access="ROLE_USER"/> </http> <!-- 认证管理器。用户名密码都集成在配置文件中 --> <authentication-manager> <authentication-provider> <user-service> <user name="sharp" password="sharp" authorities="ROLE_USER"/> </user-service> </authentication-provider> </authentication-manager> </beans:beans>
另外我新建了一个index.jsp文件,作用是登录成功后返回到index.jsp页面:
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>登录首页</title> </head> <body> <span color="red">登录成功!</span> </body> </html>
当我们在浏览器地址栏里输入下面的url:
http: //localhost:8080/SpringSecurityPrj/ |
我们就可以再浏览器里看到用户登录界面:
呵呵,内置的登录页面,挺好玩的。没有使用过springsecurity可能还没发现我在那里配置用户名和密码吧,看下面一段代码,这里就是用户名和密码:
<user name= "sharp" password= "sharp" authorities= "ROLE_USER" /> |
测试一:
我们录入用户名:admin;密码:admin,然后点击提交查询,最终页面如下:
登录失败了哦!
测试二:我们录入用户名:sharp;密码:sharp;如下图:
点击提交查询后,页面如下:
页面跳转到index.jsp页面,登录成功了。
哈哈,用这个做登录是不是很easy啊!
在第一个实例基础上我做了第二个实例。
第二个实例:
第一个例子里的登录页面是springsecurity的默认页面,这种死板的页面满足不了千变万化的用户需求,因此这个实例里我将自定义登录界面,这里我们还要加入几个jar包,最新的lib包下的目录如下所示:
新建一个login.jsp页面代码如下:
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>用户登录</title> </head> <body onLoad="document.f.j_username.focus();"> <c:if test="${not empty param.login_error}"> <font color="red"> 登录失败,请重试.<br/><br/> 原因:<c:out value="${SPRING_SECURITY_LAST_EXCEPTION.message}"/> </font> </c:if> <form name="f" action="<c:url value=‘j_spring_security_check‘/>" method="POST"> <table> <tr> <td>用户名:</td> <td> <input type=‘text‘ name=‘j_username‘ value=‘<c:if test="${not empty param.login_error}"><c:out value="${SPRING_SECURITY_LAST_USERNAME}"/></c:if>‘/> </td> </tr> <tr> <td>密 码:</td> <td><input type=‘password‘ name=‘j_password‘></td> </tr> <tr> <td> <input type="checkbox" name="_spring_security_remember_me"></td><td>两周内自动登录 </td> </tr> <tr> <td colspan=‘2‘ align="center"> <input name="submit" type="submit"> <input name="reset" type="reset"> </td> </tr> </table> </form> </body> </html>
修改applicationContext-security.xml配置文件:
<?xml version= "1.0" encoding= "UTF-8" ?> <beans:beans xmlns= "http://www.springframework.org/schema/security" xsi:schemaLocation="http: //www.springframework.org/schema/beans http: //www.springframework.org/schema/beans/spring-beans-3.0.xsd http: //www.springframework.org/schema/security http: //www.springframework.org/schema/security/spring-security-3.2.xsd"> <!-- 自动配置模式,拦截所有请求,有ROLE_USER才可以通过 --> <http auto-config= "true" > <intercept-url pattern= "/login.jsp*" access= "IS_AUTHENTICATED_ANONYMOUSLY" /> <intercept-url pattern= "/**" access= "ROLE_USER" /> <form-login login-page= "/login.jsp" authentication-failure-url= "/login.jsp?login_error=1" /> </http> <!-- 认证管理器。用户名密码都集成在配置文件中 --> <authentication-manager> <authentication-provider> <user-service> <user name= "sharp" password= "sharp" authorities= "ROLE_USER" /> </user-service> </authentication-provider> </authentication-manager> <!-- 指定中文资源 。默认命名空间是security,所以要加前缀beans: --> <beans:bean id= "messageSource" class = "org.springframework.context.support.ReloadableResourceBundleMessageSource" > <beans:property name= "basename" value= "classpath:org/springframework/security/messages_zh_CN" /> </beans:bean> </beans:beans> |
我们在浏览器地址栏里输入下面的url,点击回车,界面如下:
测试一:
我们录入用户名:admin;密码:admin,然后点击提交查询,最终页面如下:
登录失败!
测试二:我们录入用户名:sharp;密码:sharp;如下图:
点击提交查询,结果如下:
第三个实例:
只要是接触过权限管理的程序员都知道,一般的权限管理都有角色的概念,但是传统的角色都是在数据库建模,然后用编程的方式来实现的。在springsecurity里面就有角色的概念,用起来也很方便,上面的例子里我们使用了一个角色ROLE_USER,现在我们添加一个角色ROLE_ADMIN,我们修改applicationContext-security.xml配置文件:
<?xml version= "1.0" encoding= "UTF-8" ?> <beans:beans xmlns= "http://www.springframework.org/schema/security" xsi:schemaLocation="http: //www.springframework.org/schema/beans http: //www.springframework.org/schema/beans/spring-beans-3.0.xsd http: //www.springframework.org/schema/security http: //www.springframework.org/schema/security/spring-security-3.2.xsd"> <!-- 自动配置模式,拦截所有请求,有ROLE_USER才可以通过 --> <http auto-config= "true" > <intercept-url pattern= "/login.jsp*" access= "IS_AUTHENTICATED_ANONYMOUSLY" /> <!-- 增加 ROLE_ADMIN角色--> <intercept-url pattern= "/admin.jsp" access= "ROLE_ADMIN" /> <intercept-url pattern= "/**" access= "ROLE_USER" /> <form-login login-page= "/login.jsp" authentication-failure-url= "/login.jsp?login_error=1" /> </http> <!-- 认证管理器。用户名密码都集成在配置文件中 --> <authentication-manager> <authentication-provider> <user-service> <!-- 添加ROLE_ADMIN角色 --> <user name= "admin" password= "admin" authorities= "ROLE_USER,ROLE_ADMIN" /> <user name= "sharp" password= "sharp" authorities= "ROLE_USER" /> </user-service> </authentication-provider> </authentication-manager> <!-- 指定中文资源 。默认命名空间是security,所以要加前缀beans: --> <beans:bean id= "messageSource" class = "org.springframework.context.support.ReloadableResourceBundleMessageSource" > <beans:property name= "basename" value= "classpath:org/springframework/security/messages_zh_CN" /> </beans:bean> </beans:beans> |
另外我新建一个admin.jsp页面:
<%@ page language= "java" contentType= "text/html; charset=UTF-8" pageEncoding= "UTF-8" %> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd" > <html> <head> <meta http-equiv= "Content-Type" content= "text/html; charset=UTF-8" > <title>Admin 管理界面</title> </head> <body> <p style= "color:red" >admin.jsp页面</p> </body> </html> |
修改下index.jsp页面:
<%@ page language= "java" contentType= "text/html; charset=UTF-8" pageEncoding= "UTF-8" %> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd" > <html> <head> <meta http-equiv= "Content-Type" content= "text/html; charset=UTF-8" > <title>登录首页</title> </head> <body> <span color= "red" >登录成功!</span> <br/> <a href= "admin.jsp" >admin.jsp</a> </body> </html> |
测试一:
我们输入的用户名:sharp;密码:sharp,登录成功了,我们进入到了页面index.jsp:
点击admin.jsp链接,结果如下:
sharp用户没有ROLE_ADMIN角色的权限,所以sharp访问不了admin.jsp页面。
测试二:
我们输入的用户名:admin;密码:admin,登录成功了,我们进入到了页面index.jsp(如上图),
然后
点击admin.jsp链接,结果如下:
用户admin是可以访问admin.jsp页面。
好了,今天学习结束了!
总结下:今天都是具体操作,而且这些操作在网上多的不得了,不过我想学springsecurity都得从这一步开始,现在我对springsecurity理解还不深,整篇文章都是如何去编码,而没有一些知识的讲解,我会尽全力一步步深入,做软件最好还是知其所以然,明天看能不能研究原理,下一篇由springsecurity和数据库的结合开始。
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原文地址:http://www.cnblogs.com/longshiyVip/p/5055184.html