Spring Security4.X 简单实例介绍

简介

本例子采用的是SpringMVC、SpringSecurity和Spring整合的简单使用

使用gradle搭建的项目（gradle比maven更加便捷），可以自行了解

web.xml配置

 <?xml version="1.0" encoding="UTF-8"?>
 <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
          version="3.1">

     <!-- Spring启动监听器 -->
     <listener>
         <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
     </listener>

     <!-- Spring配置 -->
     <context-param>
         <param-name>contextConfigLocation</param-name>
         <param-value>classpath:spring/spring-service.xml</param-value>
     </context-param>

     <!-- 配置DispatcherServlet -->
     <servlet>
         <servlet-name>Spring MVC</servlet-name>
         <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
         <init-param>
             <param-name>contextConfigLocation</param-name>
             <param-value>classpath:spring/spring-web.xml</param-value>
         </init-param>
     </servlet>
     <servlet-mapping>
         <servlet-name>Spring MVC</servlet-name>
         <!-- 默认匹配所有的请求 -->
         <url-pattern>/</url-pattern>
     </servlet-mapping>

     <!-- 编码过滤器 乱码处理 -->
     <filter>
         <filter-name>encodingFilter</filter-name>
         <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
         <async-supported>true</async-supported>
         <init-param>
             <param-name>encoding</param-name>
             <param-value>UTF-8</param-value>
         </init-param>
     </filter>
     <filter-mapping>
         <filter-name>encodingFilter</filter-name>
         <url-pattern>/*</url-pattern>
     </filter-mapping>

     <!-- 配置Spring Security -->
     <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相关配置

　　spring-service.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:context="http://www.springframework.org/schema/context"
        xmlns:tx="http://www.springframework.org/schema/tx"
        xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
         http://www.springframework.org/schema/context
         http://www.springframework.org/schema/context/spring-context.xsd
         http://www.springframework.org/schema/aop
         http://www.springframework.org/schema/aop/spring-aop.xsd
         http://www.springframework.org/schema/security
         http://www.springframework.org/schema/security/spring-security.xsd
         http://www.springframework.org/schema/tx
         http://www.springframework.org/schema/tx/spring-tx.xsd">

     <import resource="spring-security.xml"/>

 </beans>

　　spring-web.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:mvc="http://www.springframework.org/schema/mvc"
        xmlns:context="http://www.springframework.org/schema/context"
        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">

     <!-- 1:开启SpringMVC注解模式 -->
     <!-- 简化配置：
         (1):自动注册DefaultAnnotationHandlerMapping,AnnotationMethodHandlerAdapter
         (2).提供一系列:数据绑定,数字和日期的format @NumberFormat,@DataTimeFormat,
                 xml,json默认读写支持
      -->
     <mvc:annotation-driven/>

     <!-- 2:静态资源 默认Servlet配置
             1:加入对静态资源的处理:js,gif,png
             2:允许使用"/"做整体映射
     -->
     <mvc:default-servlet-handler/>

     <!-- 3:配置jsp 显示ViewResolver -->
     <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
         <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
         <property name="prefix" value="/views/"/>
         <property name="suffix" value=".jsp"/>
     </bean>

     <!--4: 扫描web相关的bean -->
     <context:component-scan base-package="com.h3c.xservice.lc.controller" />

     <bean id="mappingJacksonHttpMessageConverter"
           class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
         <property name="supportedMediaTypes">
             <list>
                 <value>text/html;charset=UTF-8</value>
             </list>
         </property>
     </bean>

 </beans>

　　spring-security.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <beans:beans xmlns="http://www.springframework.org/schema/security"
              xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
              xmlns:beans="http://www.springframework.org/schema/beans"
              xsi:schemaLocation="http://www.springframework.org/schema/security
                 http://www.springframework.org/schema/security/spring-security.xsd
                 http://www.springframework.org/schema/beans
                 http://www.springframework.org/schema/beans/spring-beans.xsd">

     <http auto-config="true" use-expressions="true">
         <intercept-url pattern="/admin" access="hasRole('ROLE_USER')" />
         <logout logout-url="/j_spring_security_logout" invalidate-session="true" logout-success-url="/login"/>
         <csrf disabled="true"/>
     </http>

     <authentication-manager>
         <authentication-provider>
             <user-service>
                 <user name="root" password="root" authorities="ROLE_USER"/>
             </user-service>
         </authentication-provider>
     </authentication-manager>

 </beans:beans>

如果 配置access = "ROLE_USER"，会出现500错误，4.X需要配置access = "hashRole('ROLE_USER')"

csrf标签下 disabled属性需要配置为true，否则logout会错

use-expressions = "true" 加和不加都没什么影响

java代码

 package com.h3c.xservice.lc.controller;

 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestMethod;
 import org.springframework.web.servlet.ModelAndView;

 @Controller
 public class UserController {

     @RequestMapping(value = { "/", "/welcome" }, method = RequestMethod.GET)
     public ModelAndView welcome() {

         ModelAndView model = new ModelAndView();
         model.addObject("title", "Welcome - Spring Security Hello World");
         model.addObject("message", "This is welcome page!");
         model.setViewName("hello");
         return model;

     }

     @RequestMapping(value = "/admin", method = RequestMethod.GET)
     public ModelAndView admin() {

         ModelAndView model = new ModelAndView();
         model.addObject("title", "Admin - Spring Security Hello World");
         model.addObject("message", "This is protected page!");
         model.setViewName("admin");

         return model;

     }

 }

jsp代码

admin.jsp

 <%@ page contentType="text/html;charset=UTF-8" language="java" %>
 <%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
 <html>
 <head>
     <title>${title}</title>
 </head>
 <body>
     <h1>Title : ${title}</h1>
     <h1>Message : ${message}</h1>

     <c:if test="${pageContext.request.userPrincipal.name != null}">
         <h2>
             Welcome : ${pageContext.request.userPrincipal.name} |
             <a href="<c:url value="/j_spring_security_logout" />"> Logout</a>
         </h2>
     </c:if>
 </body>
 </html>

hello.jsp

 <%@ page contentType="text/html;charset=UTF-8" language="java" %>
 <html>
 <head>
     <title>${title}</title>
 </head>
 <body>
     <h1>Title:${title}</h1>
     <h1>Message:${message}</h1>
 </body>
 </html>

浏览器访问

　　　　

　　访问127.0.0.1:8080/项目名/welcome，如下

　　访问127.0.0.1:8080/项目名/admin，如下

　　

当账号密码错误的时候会有错误提示，可以自行测试。正确后，会进去admin页面，如下

因为我配置了点击Logout后重定向到登录页面，所以点击后又会去到上图页面。

参考学习资料：

http://www.tuicool.com/articles/R7bQ3eb

http://www.cnblogs.com/yjmyzz/p/spring-security-with-spring-mvc-helloworld.html

http://docs.spring.io/spring-security/site/docs/4.1.3.RELEASE/reference/htmlsingle/