spring整合spring security
1.什么是spring security?
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。主要用于登录中。
2.spring security入门案例
1)创建maven的web工程,在pom.xml中添加依赖
<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>org.csource.fastdfs</groupId> <artifactId>fastdfs</artifactId> <version>1.2</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>1.8</source> <target>1.8</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>9999</port> <!-- 请求路径 --> <path>/</path> </configuration> </plugin> </plugins> </build>
2)创建spring-security.xml
作用:1.定义页面拦截规则,2.配置认证管理器
ROLE_USER代表用户组
<form-login/> 开启表单登录
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')" />
<?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">
<!-- /**任意目录以及子目录--> <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>
3)配置web.xml
作用:1.加载spring-security.xml配置文件,2.配置一个监听器,3.配置一个过滤器
<?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>
4)创建login.html
spring security自带登录界面
登陆失败:
<!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>
5)创建登录失败页面,error.html
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> 用户名或密码错误 </body> </html>
6)在spring-security配置登录信息
<!-- 以下页面不被拦截 --> <http pattern="/login.html" security="none"></http> <http pattern="/error.html" security="none"></http> <!-- 页面拦截规则 --> <http use-expressions="false"> <intercept-url pattern="/*" access="ROLE_USER" /> <form-login login-page="/login.html" default-target-url="/index.html" authentication-failure-url="/login_error.html"/> <csrf disabled="true"/> </http>
security="none" 设置此资源不被拦截.
如果你没有设置登录页security="none" ,将会出现以下错误
login-page:指定登录页面。
authentication-failure-url:指定了身份验证失败时跳转到的页面。
default-target-url:指定了成功进行身份验证和授权后默认呈现给用户的页面。
csrf disabled="true" 关闭csrf ,如果不加会出现错误
一点点学习,一丝丝进步。不懈怠,才不会被时代所淘汰!