spring-security3 配置和使用 （一）

最近项目中要使用到spring-security，可能研究的不够透彻 这些知识点 都是从网上copy的 或许能对需要的朋友一些帮助。如若喜欢欢迎转载！

1、在spring-security官网下载最新jar然后拷贝jar到项目的lib下。
2、在classpath下添加security配置文件,例如applicationContext-security.xml.网上现在大多都是2.0的schema. 要根据自己使用的版本而定.下面是3.0的schema.

Xml代码 

<? 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-3.0.xsd        http://www.springframework.org/schema/security        http://www.springframework.org/schema/security/spring-security-3.0.xsd" >   

  </ beans:beans >   

<?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-3.0.xsd
http://www.springframework.org/schema/security
http://www.springframework.org/schema/security/spring-security-3.0.xsd">

</beans:beans>

3、然后在web.xml中添加配置,内容如下:

Xml代码 

<!-- spring security  -->         

  < context-param >          

        < param-name > contextConfigLocation </ param-name >            

       < param-value >                classpath*:/applicationContext*.xml             </ 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 >   

<!-- spring security -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
classpath*:/applicationContext*.xml
</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>

配置起来很简单,由于我的security是整合到现有项目中的.一些jar可能已经存在. 单独做demo的朋友配置的时候可能会出现问题.

本想分开发挣点积分..但怕大家看起来累.. 就发到一起吧.. (*^__^*)

使用篇

1、建立login.jsp页面.内容如下:

Html代码 

< form   action = "<%=path %>/j_spring_security_check"   method = "post" >            USERNAME: < input   type = "text"   name = "j_username"   value = "${sessionScope['SPRING_SECURITY_LAST_USERNAME']}"   /> < br />            PASSWORD: < input   type = "password"   name = "j_password"   value = ""   /> < br />          

  < input   type = "checkbox"   name = "_spring_security_remember_me"   /> 两周之内不必登陆 < br />          

  < input   type = "submit" >              

</ form >   

<form action="<%=path %>/j_spring_security_check" method="post">
USERNAME:<input type="text" name="j_username" value="${sessionScope['SPRING_SECURITY_LAST_USERNAME']}" /><br/>
PASSWORD:<input type="password" name="j_password" value="" /><br/>
<input type="checkbox" name="_spring_security_remember_me" />两周之内不必登陆<br/>
<input type="submit">
</form>

j_spring_security_check : 为security验证中心(不知道怎么说合适.暂时这么理解吧..).
j_username: 验证用户名;
j_password: 验证密码;
${sessionScope['SPRING_SECURITY_LAST_USERNAME']}:使用最后一次登录用户名.
_spring_security_remember_me:记住我...