基于注释的Spring Security实战指南

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《基于注释的Spring Security实战指南》

版权声明:本文属于原创,版权归作者chszs所有,使用源码无任何限制,但转载文章需经作者同意。

一、准备工作

预准备的工具及软件有:

1. Eclipse IDE:我使用Eclipse JEE 3.7版,即eclipse-jee-indigo-SR2-win32-x86_64.zip

2. JDK 7我使用JDK 7u4版,即jdk-7u4-windows-x64.exe

3. Spring Framework我使用Spring Framework 3.1.2版,即spring-framework-3.1.2.RELEASE-with-docs.zip

4. Spring Security:我使用Spring Security 3.1.2版,即spring-security-3.1.2.RELEASE-dist

5. 其它JAR包:jstl-1.2.jarcommons-logging-1.1.1.jarcglib-nodep-2.2.jar

6. Tomcat应用服务器:我使用Tomcat 7.0.29版,即apache-tomcat-7.0.29-windows-x64.zip

说明:

1. Eclipse IDEJDK 7的版本可以更高一些,不影响开发和调试。

2. Eclipse一定要下载JEE版。

3. EclipseJDKTomcat的安装过程省略。

4. 我的操作系统是64位版本,故开发环境对应的工具都是下载64位的安装包。

二、新建项目

Eclipse环境下新建Dynamic Web Project

项目名为:SpringSecurityDemo

Target runtime选择New Runtime,然后选择Apache Tomcat v7.0,并设置好Tomcat的安装目录。

连续点击两次Next,在“Generate web.xml deployment descriptor”处打勾选择,并点击Finish


三、添加库文件

把下列JAR文件添加到项目的WebContent\WEB-INF\lib目录下。

四、业务层开发

1. 在项目src处,新建com.ch.configuration包,并新建WebConfig.java类,内容如下:

package com.ch.configuration;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.ComponentScan;import org.springframework.context.annotation.Configuration;import org.springframework.context.annotation.ImportResource;import org.springframework.web.servlet.ViewResolver;import org.springframework.web.servlet.config.annotation.EnableWebMvc;import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;import org.springframework.web.servlet.view.InternalResourceViewResolver;@EnableWebMvc@Configuration@ComponentScan(basePackages = "com.jverstry")@ImportResource("/WEB-INF/MyServlet-security.xml")public class WebConfig extends WebMvcConfigurerAdapter {@Beanpublic ViewResolver getViewResolver() {InternalResourceViewResolver resolver = new InternalResourceViewResolver();resolver.setPrefix("WEB-INF/pages/");resolver.setSuffix(".jsp");return resolver;}}

2. 新建com.ch.configuration.controller包,并新建MyController.java类,内容如下:

package com.ch.configuration.controller;import com.ch.configuration.service.MyService;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.RequestMapping;@Controllerpublic class MyController {private MyService myService;@Autowiredpublic void setMyService(MyService myService) {this.myService = myService;}@RequestMapping(value = "/")public String home() {return "index";}@RequestMapping(value = "/getTime")public String helloWorld(Model model) {model.addAttribute("TimeIs", myService.getCurrentTimeInMilliseconds());return "getTime";}}

3. 新建com.ch.configuration.service包,并新建MyService.java接口类,内容如下:

package com.ch.configuration.service;public interface MyService {long getCurrentTimeInMilliseconds();}

4. com.ch.configuration.service包新建MyServiceImpl.java类,内容如下:

package com.ch.configuration.service;public class MyServiceImpl implements MyService {@Overridepublic long getCurrentTimeInMilliseconds() {return System.currentTimeMillis();}}

5. com.ch.configuration.service包新建MyServicesConfiguration.java类,内容如下:

package com.ch.configuration.service;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;@Configurationpublic class MyServicesConfiguration {private MyService myService = new MyServiceImpl();@Beanpublic MyService getMyService() {return myService;}}

五、前台页面层开发

1. WebContent\WEB-INF目录新建pages文件夹,接着在pages目录下新建getTime.jsp文件,内容如下:

<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%><%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Get Time !!!</title></head><body>The time in milliseconds is:<c:out value="${TimeIs}" />!</body></html>

2. pages目录下新建index.jsp文件,内容如下:

<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Welcome !!!</title></head><body><h1>Welcome To Spring MVC With Annotations !!!</h1><h1>(with login...)</h1></body></html>

3. 修改WEB-INF下的web.xml文件,内容如下:

<?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"id="WebApp_ID" version="3.0"><display-name>SpringSecurityDemo</display-name><context-param><param-name>contextClass</param-name><param-value>org.springframework.web.context.support.AnnotationConfigWebApplicationContext</param-value></context-param><context-param><param-name>contextConfigLocation</param-name><param-value>com.ch.configuration</param-value></context-param><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><listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener><servlet><servlet-name>MyServlet</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><init-param><param-name>contextConfigLocation</param-name><param-value></param-value></init-param><load-on-startup>1</load-on-startup></servlet><servlet-mapping><servlet-name>MyServlet</servlet-name><url-pattern>/</url-pattern></servlet-mapping><welcome-file-list><welcome-file></welcome-file></welcome-file-list></web-app>

4. WEB-INF下新建MyServlet-security.xml文件,内容如下:

<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-3.0.xsd    http://www.springframework.org/schema/security    http://www.springframework.org/schema/security/spring-security-3.1.xsd"><http auto-config="true"><intercept-url pattern="/*" access="ROLE_USER" /></http><authentication-manager alias="authenticationManager"><authentication-provider><user-service><user authorities="ROLE_USER" name="guest" password="guest" /></user-service></authentication-provider></authentication-manager></beans:beans>

至此,Demo项目的开发已经完成。项目的整体结构图如图所示:



六、部署和运行

1. Eclipse选择项目SpringSecurityDemo,右键选择“Run As”,再选择“Run on Server”,选择Apache Tomcat v7.0Eclipse IDE自动完成部署并运行。

在浏览器上输入地址:http://localhost:8080/SpringSecurityDemo/

显示如下:

注:地址自动被重定向到http://localhost:8080/SpringSecurityDemo/spring_security_login

User/Password输入guest/guest,显示:

如果输入错误,显示:

OK!本文就到这里,对于Spring的注释,可以参考官方文档加以理解。