springSecurity入门小demo--配置文件xml的方式

本例子只是一个最最最简单的入门demo，重点讲解xml的配置参数的意思和遇到的坑，主要的功能有：

自定义登录页面，错误页面
配置角色
csrf-403报错的原因

pom.xml

<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.demo</groupId>
  <artifactId>spring-security-demo</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  
  <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>

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index.html

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>首页</title>
</head>
<body>
欢迎进入神奇的spring security世界~~~
</body>
</html>

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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>登陆</title>
</head>
<body>

--欢迎的登陆我的系统--
<form action="/login" method="post">
    用户名：<input name="username"><br>
    密码：<input name="password"><br>
    <button>登陆</button>
</form>


</body>
</html>

View Code

login_error.html

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>首页</title>
</head>
<body>
用户名或密码错误~~~
</body>
</html>

View Code

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">

    <!-- 设置页面不登陆也可以访问 -->
    <http pattern="/login.html" security="none"></http>
    <http pattern="/login_error.html" security="none"></http>

    <!-- 页面的拦截规则    use-expressions:是否启动SPEL表达式 默认是true -->
    <http use-expressions="false">
        <!-- 当前用户必须有ROLE_USER的角色 才可以访问根目录及所属子目录的资源 -->
        <intercept-url pattern="/**" access="ROLE_USER"/>
        <!-- 开启表单登陆功能 -->
        <form-login   login-page="/login.html" default-target-url="/index.html" authentication-failure-url="/login_error.html"/>
        <csrf disabled="true"/>
    </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>

View Code

注意：use-expressions默认是true，如果我们不关闭的话，那么我们下面自定义访问权限就必须这样写<intercept-url pattern="/**" access="hasRole('ROLE_USER')"/> 很麻烦

如果出现csrf错误的话，就加上这句话<csrf disabled="true"/>

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>

View Code

注意：springSecurityFilterChain必须这个名字。

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springSecurity入门小demo--配置文件xml的方式

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