权限管理框架-spring-Sercurity概念及快速入门步骤代码详解

SpringSecurity概念

SpringSecurity是一个安全管理框架，提供了认证与授权这些基本操作
认证：用户访问系统，系统校验用户身份是否合法的过程就是认证。常见的认证：登陆认证。
授权：用户认证后，访问系统资源，校验用户是否有权限访问系统资源的过程就是授权访问校验，简称为授权。权限校验过程：1.获取用户的权限； 2. 知道访问资源需要的权限；3.拿着访问资源需要的权限去用户权限列表查找，找到则授权访问。否则拒绝访问。

注意

认证与授权，不是属于springsecurity所特有的概念，这些是通用的概念。

常见的权限管理框架：

springsecurity
apache shiro
自己写代码封装认证授权操作。

.SpringSecurity(二)快速入门

使用步骤：

创建web项目
添加依赖
配置web.xml
spring-security.xml 配置
页面准备

实现

创建web项目

添加依赖

<?xml version="1.0" encoding="UTF-8"?>

<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/xsd/maven-4.0.0.xsd">  
  <modelVersion>4.0.0</modelVersion>  
  <groupId>cn.itcast</groupId>  
  <artifactId>spring_security_demo</artifactId>  
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>
  <properties>
    <spring.version>5.0.2.RELEASE</spring.version>
    <spring.security.version>5.0.1.RELEASE</spring.security.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>${spring.security.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework.security</groupId>
      <artifactId>spring-security-config</artifactId>
      <version>${spring.security.version}</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.1.0</version>
      <scope>provided</scope>
    </dependency>
  </dependencies>

</project>

配置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>

   <!--SpringSecurity提高的代理过滤器，拦截请求并且把请求的处理（认证与授权）交给springsecurity框架。-->
   <!--注意：filter-name 不能随便写，会根据这个名称去容器找对应的对象。-->
   <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>

spring-security.xml 配置

<?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:security="http://www.springframework.org/schema/security"
       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">

    <!--1.先指定放行的资源-->
    <security:http pattern="/login.html" security="none"/>
    <security:http pattern="/failer.html" security="none"/>
    <security:http pattern="/favicon.ico" security="none"/>

    <!--2.配置SpringSecurity拦截的资源、登录表单、退出表单、登录失败对应的页面等。-->
    <security:http auto-config="true" use-expressions="false">
        <!--2.1 指定拦截的资源，以及要求访问这些资源的用户必须具有ROLE_PRIMARY权限。-->
        <security:intercept-url pattern="/**" access="ROLE_PRIMARY"/>

        <!--2.2 配置自定义的登录页面-->
        <security:form-login login-page="/login.html"
                             login-processing-url="/login"
                             username-parameter="username"
                             password-parameter="password"
                             default-target-url="/success.html"
                             authentication-failure-url="/failer.html"
        />

        <!--2.3 配置退出-->
        <security:logout
                logout-url="/logout"
                logout-success-url="/login.html"
                invalidate-session="true"
        />

        <!--2.3 关闭csrf跨域请求-->
        <security:csrf disabled="true"/>

    </security:http>

    <!--3.认证管理器，配置正确的账号密码,在这里是写死的。-->
    <security:authentication-manager>
        <security:authentication-provider>
            <security:user-service>
                <security:user name="zhangsan" password="{noop}666" authorities="ROLE_PRIMARY"/>
            </security:user-service>
        </security:authentication-provider>
    </security:authentication-manager>
</beans>

页面准备

页面如下

index.html
<body>
    index...
</body>

login.html
<body>
<form action="/login" method="post">
    用户<input type="text" name="username"><br>
    密码<input type="password" name="password"><br>
    <input type="submit" value="登陆"><br>
</form>
</body>

success.html
<body>
success...   <a href="/logout">退出</a>
</body>

failer.html
<body>
登录失败！
</body>

权限管理框架-spring-Sercurity概念及快速入门步骤代码详解

.SpringSecurity(二)快速入门

猜你喜欢