Spring Security

簡介

Spring Security是一個能夠為基于Spring的企業應用系統提供聲明式的安全訪問控制解決方案的安全框架。

案例

pom.xml

<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編譯插件 -->
          <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>
                    <!-- 請求路徑 -->
                    <path>/</path>
                </configuration>
          </plugin>
       </plugins>  
    </build>

web.xml

<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>

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">

    <!-- 設置頁面不登陸也可以訪問 -->
    <http pattern="/login.html" security="none"></http>
    <http pattern="/login_error.html" security="none"></http>

    <!-- 頁面的攔截規則  use-expressions：是否啟動SPEL表達式默認是true-->                     
    <http use-expressions="false">
        <!-- 當前用戶必須有ROLE_USER的角色才可以訪問根目錄及所屬子目錄的資源，/**訪問根目錄及所屬子目錄的資源，/*只能訪問根目錄 -->
        <intercept-url pattern="/**" access="ROLE_USER"/>
        <!-- 開啟表單驗證 -->
        <form-login login-page="/login.html" default-target-url="/index.html" authentication-failure-url="/login_error.html"/>
        <csrf disabled="true"/>
    </http>

    <!-- 認證管理器 -->
    <authentication-manager>
        <authentication-provider>
            <user-service>
                <user name="admin" password="123456" authorities="ROLE_USER"/>
            </user-service>
        </authentication-provider>
    </authentication-manager>

</beans:beans>

注意事項

1：intercept-url 表示攔截頁面

2：form-login 為開啟表單登陸，

3：use-expressions 為是否使用使用 Spring 表達式語言（ SpEL ），默認為true ,如果開啟，則攔截的配置應該寫成以下形式

<intercept-url pattern="/**" access="hasRole('ROLE_USER')" />

4：security="none" 設置此資源不被攔截.
5：CSRF

CSRF（Cross-site request forgery）跨站請求偽造，也被稱為“One Click Attack”或者Session Riding，通常縮寫為CSRF或者XSRF，是一種對網站的惡意利用。