Spring Security框架入门_01

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。

入门案例: 这里使用maven搭建

1:创建一个war工程,在pom文件导入jar索引

 <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>
                

            <!-- security两个核心jar包-->

                 <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>

在web.xml中配置

<servlet>
 	<!--springmvc前端控制器  -->
  	<servlet-name>springmvc</servlet-name>
  	<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  	<!-- 指定加载的配置文件 ，通过参数contextConfigLocation加载-->
  	<init-param>
  		<param-name>contextConfigLocation</param-name>
  		<param-value>classpath:springmvc-servlet.xml</param-value>
  	</init-param>
  </servlet>
  
  <servlet-mapping>
  	<servlet-name>springmvc</servlet-name>
  	<url-pattern>*.do</url-pattern>
  </servlet-mapping>
    
	<!-- spring-security配置 -->
  	 <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>

创建两个webxml要加载的配置文件

    springmvc-servlet.xml

<?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:p="http://www.springframework.org/schema/p"
	xmlns:context="http://www.springframework.org/schema/context"
	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/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">


</beans>

    spring-security.xml

<?xml version="1.0" encoding="UTF-8"?>
<bean:beans xmlns="http://www.springframework.org/schema/security"
	xmlns:bean="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">
	
        <http >
		<intercept-url pattern="/*" access="hasRole('ROLE_USER')" />
		<form-login/>
	</http>
	<!-- 认证管理器-->
	<authentication-manager>
		<authentication-provider>
			<user-service>
				<user authorities="ROLE_USER" name="root" password="123456" />
			</user-service>
		</authentication-provider>
	</authentication-manager>
	
</bean:beans>

创建首页index.html

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
	security测试首页
</body>
</html>

启动访问首页:会进入securiry创建的登录页面 如下

输入配置文件给出的账号密码即可登录完成