Spring Security框架入门
1.Spring Security框架入门
1.1 Spring Security简介
Spring Security是一个能够为基于Spring的企业应用系统提供声明式的安全访问控制解决方案的安全框架。它提供了一组可以在Spring应用上下文中配置的Bean,充分利用了Spring IoC,DI(控制反转Inversion of Control ,DI:Dependency Injection 依赖注入)和AOP(面向切面编程)功能,为应用系统提供声明式的安全访问控制功能,减少了为企业系统安全控制编写大量重复代码的工作。
1.2 Spring Security入门小Demo
1.2.1最简单Demo
(1)创建工程spring-security-demo ,pom.xml内容
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>cn.itcast.demo</groupId> <artifactId>spring-security-demo</artifactId> <packaging>war</packaging> <version>0.0.1-SNAPSHOT</version> <properties> <spring.version>4.2.4.RELEASE</spring.version> </properties> <dependencies> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework.security</groupId> <artifactId>spring-security-web</artifactId> <version>4.1.0.RELEASE</version> </dependency> <dependency> <groupId>org.springframework.security</groupId> <artifactId>spring-security-config</artifactId> <version>4.1.0.RELEASE</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.5</version> <scope>provided</scope> </dependency> </dependencies> <build> <plugins> <!-- java编译插件 --> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.2</version> <configuration> <source>1.7</source> <target>1.7</target> <encoding>UTF-8</encoding> </configuration> </plugin> <plugin> <groupId>org.apache.tomcat.maven</groupId> <artifactId>tomcat7-maven-plugin</artifactId> <configuration> <!-- 指定端口 --> <port>9090</port> <!-- 请求路径 --> <path>/</path> </configuration> </plugin> </plugins> </build> </project>
(2)创建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_2_5.xsd" version="2.5"> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring-security.xml</param-value> </context-param> <listener> <listener-class> org.springframework.web.context.ContextLoaderListener </listener-class> </listener> <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> </web-app>
(3)创建index.html 内容略
(4)创建spring 配置文件spring-security.xml
<?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.xsd http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security.xsd"> <!-- 页面拦截规则 --> <http use-expressions="false"> <intercept-url pattern="/**" access="ROLE_USER" /> <form-login/> </http> <!-- 认证管理器 --> <authentication-manager> <authentication-provider> <user-service> <user name="admin" password="123456" authorities="ROLE_USER"/> </user-service> </authentication-provider> </authentication-manager> </beans:beans>
此案例我们没有登录页,而是使用了系统自动生成的登陆页,效果如下:
配置说明:
intercept-url 表示拦截页面
/* 表示的是该目录下的资源,只包括本级目录不包括下级目录
/** 表示的是该目录以及该目录下所有级别子目录的资源
form-login 为开启表单登陆
use-expressions 为是否使用使用 Spring 表达式语言( SpEL ),默认为true ,如果开启,则拦截的配置应该写成以下形式
<intercept-url pattern="/**" access="hasRole('ROLE_USER')" />
1.2.2用户自定义登录页
实际开发中,我们不可能使用系统生成的登录页,而是使用我们自己的登录页。
(1)构建登陆页:
<!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>登陆</title> </head> <body> <form action='/login' method='POST'> <table> <tr> <td>用户名:</td> <td><input type='text' name='username' value=''></td> </tr> <tr> <td>密码:</td> <td><input type='password' name='password' /></td> </tr> <tr> <td colspan='2'><input name="submit" type="submit" value="登陆" /></td> </tr> </table> </form> </body> </html>
(2)构建登陆失败页 login_error.html(内容略)
(3)修改 spring 配置文件spring-security.xml
1.3用户信息读取数据库
1.3.1自定义认证类
(1)pom.xml、web.xml 、login.html 参照运营商管理后台
(2)在pinyougou-shop-web创建com.pinyougou.service包,包下创建类UserDetailsServiceImpl.java 实现UserDetailsService接口
/** * 认证类 * @author Administrator * */ public class UserDetailsServiceImpl implements UserDetailsService { private UserService userService; public void setUserService(UserService userService) { this.userService = userService; } @Override public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException { System.out.println("经过了UserDetailsServiceImpl"); //构建角色列表 List<GrantedAuthority> grantAuths=new ArrayList(); grantAuths.add(new SimpleGrantedAuthority("ROLE_SELLER")); //得到用户对象 User user = userService.findOne(username); if(seller!=null){ if(seller.getStatus().equals("1")){ //会自动去判断username,user.getPassword()和你输入的是否一致 return new User(username,user.getPassword(),grantAuths); }else{ return null; } }else{ return null; } } }
(3)修改pinyougou-shop-web的spring-security.xml ,添加如下配置
<!-- 引用dubbo 服务 --> <dubbo:application name="pinyougou-shop-web" /> <dubbo:registry address="zookeeper://192.168.25.129:2181"/> <dubbo:reference id="userService" interface="com.pinyougou.sellergoods.service.UserService" > </dubbo:reference> <beans:bean id="userDetailService" class="com.pinyougou.service.UserDetailsServiceImpl"> <beans:property name="userService" ref="userService"></bean:property> </beans:bean>
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