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Spring security权限使用

灡亾 人气:0

简介

Spring Security 是为了基于Spring的应用程序提供的声明式安全保护的安全性框架。Spring Security 提供了完整的安全性解决方案，它能够在Web请求级别和方法调用级别处理身份认证和授权。因为基于Spring框架，所以SPring Security充分使用了一览注入和面向切面技术。
Spring Security 本质上是借助一系列的 Servlet Filter来提供各种安全性功能，但这并不需要我们手动去添加或者创建多个Filter。实际上，我们仅需要配置一个Filter即可。
DelegatingFilterProxy 是一个特殊的Filter，他本身并没有做太多工作，而是将工作委托给了一个注入到Spring应用上下文的Filter实现类。

在本例中，主要讲解spring-security的配置与使用，实现方式为：

　　　　1.将用户、权限、资源（url）采用数据库存储

　　　　2.自定义过滤器，代替原有的 FilterSecurityInterceptor

　　　　3.自定义实现 UserDetailsService、Filter、AccessDecisionManager和FilterInvocationSecurityMetadataSource并在配置文件进行相应的配置

　　　　4.Spring-seculity在自定义用户验证的类加载必须早于Controller层创建

1.配置Spring-seculity.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:security="http://www.springframework.org/schema/security"
       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">

    <security:http security="none" pattern="/login.jsp"/>
    <security:http security="none" pattern="/plugins/**"/>
    <security:http security="none" pattern="/css/**"/>
    <security:http security="none" pattern="/css/style.css"/>
    <security:http security="none" pattern="/img/**"/>
    <security:http security="none" pattern="/filer.jsp"/>
    <security:http security="none" pattern="/favicon.ico"/>
    <security:http  auto-config="true" use-expressions="false">
        <!--优先加载MyFilter自定义过滤器-->
        <security:custom-filter  before="FILTER_SECURITY_INTERCEPTOR" ref="myFilter"/>
        <!--固定用户拦截-->
    <!--<security:intercept-url pattern="/**" access="ROLE_USER" />-->

        <!--用户账户和密码表单验证-->
        <!--login-page="拦截跳转页面" login-processing-url="用户登陆验证路径"
            user-paramter=“页面账户名字” password-parameter=“页面密码”
            authentication-failure-url=“登陆失败跳转页面” default-target-rul=“登陆成功跳转页面”
         -->
        <security:form-login login-page="/login.jsp" login-processing-url="/login"
                             username-parameter="username" password-parameter="password"
                             authentication-failure-url="/filer.jsp" default-target-url="/jsp/all-admin-index.jsp"/>
        <!--用户退出登陆 -->
        <security:logout invalidate-session="true" logout-url="/logout" logout-success-url="/login.jsp"/>

        <!--禁止跨域请求-->
        <security:csrf disabled="true"/>

    </security:http>

    <bean id="myFilter" class="filter.MyFilter"/>
    <bean id="userinfo" class="ssm.service.UserinfoService"/>

    <!--固定用户账户和密码的验证-->
    <security:authentication-manager >
        <security:authentication-provider user-service-ref="userinfo">
            <!--固定用户名跟密码-->
<!--            <security:user-service>-->
<!--                <security:user name="user" password="{noop}user"-->
<!--                               authorities="ROLE_USER" />-->
<!--            </security:user-service>-->
        </security:authentication-provider>
    </security:authentication-manager>

</beans>

2.配置Web.xml

<?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_4_0.xsd"
         version="4.0">
    <display-name>ssm-web</display-name>
    <welcome-file-list>
        <welcome-file>all-admin-login.jsp</welcome-file>
        <welcome-file>index.htm</welcome-file>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>default.html</welcome-file>
        <welcome-file>default.htm</welcome-file>
        <welcome-file>default.jsp</welcome-file>
    </welcome-file-list>
    <!--全局监听变量-->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:ApplicantContext.xml,classpath:spring-security.xml</param-value>
    </context-param>
    <!--监听器-->
    <listener>
            <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <!--默认过滤器-->
    <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-mvc中央处理器-->
    <servlet>
        <servlet-name>DispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring-mvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>DispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <!--字符编码转换器-->
    <filter>
        <filter-name>CharacterEncodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>CharacterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
</web-app>

3.自定义用户角色验证

package ssm.service;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.AuthorityUtils;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Service;
import ssm.bean.Role;
import ssm.bean.UserInfo;
import ssm.dao.LoginDao;

import java.util.ArrayList;
import java.util.List;

@Service("userinfo")
public class UserinfoService implements IUserInfoService{

    @Autowired
    LoginDao loginDao;

    @Override
    public UserDetails loadUserByUsername(String s) throws UsernameNotFoundException {　　　　//将s传参从数据库查询是否用这个用户
        UserInfo info=loginDao.findByList(s);
        List<Role> list=info.getRoles();
         List<GrantedAuthority> role= new ArrayList<GrantedAuthority>();
        for(Role i:list){
            role.add(new SimpleGrantedAuthority("ROLE_"+i.getRolename()));
        }

        System.out.println(s);
        return new User(info.getUsername(), "{noop}"+info.getPassword(),info.getStatus()!=0?true:false,true,true,true, role);


    }

}

4.seculity自定义过滤器

package filter;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.annotation.Order;
import org.springframework.security.access.SecurityMetadataSource;
import org.springframework.security.access.intercept.AbstractSecurityInterceptor;
import org.springframework.security.access.intercept.InterceptorStatusToken;
import org.springframework.security.web.FilterInvocation;

import org.springframework.security.web.access.intercept.FilterInvocationSecurityMetadataSource;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;

import javax.servlet.*;
import java.io.IOException;



@Service("myFilter")
public class MyFilter extends AbstractSecurityInterceptor implements Filter {

    @Autowired
    private FilterInvocationSecurityMetadataSource securityMetadataSource;

    @Override
    public Class<?> getSecureObjectClass() {
        return FilterInvocation.class;
    }

    @Override
    public SecurityMetadataSource obtainSecurityMetadataSource() {
        return securityMetadataSource;
    }

    @Autowired
    public void setMyAccessDecisionManager(MyAccessDescisionManager myAccessDescisionManager) {
        super.setAccessDecisionManager(myAccessDescisionManager);
    }
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }
    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws IOException, ServletException {
        System.out.println("------------MyFilterSecurityInterceptor.doFilter()-----------开始拦截器了....");
        FilterInvocation fi = new FilterInvocation(request, response, chain);

        InterceptorStatusToken token = super.beforeInvocation(fi);

        try {
            fi.getChain().doFilter(fi.getRequest(), fi.getResponse());
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            super.afterInvocation(token, null);
        }

        System.out.println("------------MyFilterSecurityInterceptor.doFilter()-----------拦截器该方法结束了....");
    }

    @Override
    public void destroy() {

    }
}

5.自定义用户权限验证

package filter;

import org.springframework.security.access.AccessDecisionManager;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.access.ConfigAttribute;
import org.springframework.security.authentication.InsufficientAuthenticationException;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;

import java.util.Collection;
import java.util.Iterator;

@Service
public class MyAccessDescisionManager implements AccessDecisionManager {
 
    @Override
    public void decide(Authentication authentication, Object object, Collection<ConfigAttribute> configAttributes)throws AccessDeniedException, InsufficientAuthenticationException {
        // TODO Auto-generated method stub
         System.out.println("MyAccessDescisionManager.decide()------------------验证用户是否具有一定的权限--------");  
            if(configAttributes==null) return;  
            Iterator<ConfigAttribute> it = configAttributes.iterator();
            while(it.hasNext()){  
                String needResource = it.next().getAttribute();  
                //authentication.getAuthorities()  用户所有的权限  
                for(GrantedAuthority ga:authentication.getAuthorities()){
                    System.out.println("ROLE_"+needResource);
                    System.out.println(ga.getAuthority());
                    if(("ROLE_"+needResource).equals(ga.getAuthority())){  
                        return;  
                    }  
                }  
            }  
            throw new AccessDeniedException("--------MyAccessDescisionManager：decide-------权限认证失败！");  
        
    }
 
    @Override
    public boolean supports(ConfigAttribute attribute) {
        // TODO Auto-generated method stub
        return true;
    }
 
    @Override
    public boolean supports(Class<?> clazz) {
        // TODO Auto-generated method stub
        return true;
    }
 
}

6.自定义初始化用户角色和权限属性

package filter;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.access.ConfigAttribute;
import org.springframework.security.access.SecurityConfig;
import org.springframework.security.web.FilterInvocation;
import org.springframework.security.web.access.intercept.FilterInvocationSecurityMetadataSource;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;
import org.springframework.util.AntPathMatcher;
import ssm.bean.Premission;
import ssm.bean.Role;
import ssm.dao.LoginDao;
import ssm.dao.MapperRoleDao;
import ssm.dao.MapperUserDao;

import java.util.*;

@Service
public class MySecurityMetadataSource implements FilterInvocationSecurityMetadataSource {
 
    /*@Autowired
    private IUserDao userDao; */
    
    @Autowired
    private LoginDao loginDao;
  

    /* 保存资源和权限的对应关系  key-资源url  value-权限 */  
    private static Map<String, Collection<ConfigAttribute>> resourceMap = null;
    private AntPathMatcher urlMatcher = new AntPathMatcher();
      
    public MySecurityMetadataSource() {    
        //loadResourcesDefine();
    }  
      
    @Override  
    public Collection<ConfigAttribute> getAllConfigAttributes() {  
        return null;  
    }  
  

    private void loadResourcesDefine(){  
        resourceMap = new HashMap<String,Collection<ConfigAttribute>>();
          
        System.out.println("MySecurityMetadataSource.loadResourcesDefine()--------------开始加载资源列表数据--------");  
        List<Role> roles;
        try {
            roles = loginDao.findByROleList();
             for(Role role : roles){
                    List<Premission> permissions = role.getPremission();
                    for(Premission permission : permissions){
                        Collection<ConfigAttribute> configAttributes = null;
                        ConfigAttribute configAttribute = new SecurityConfig(role.getRolename());
                        if(resourceMap.containsKey(permission.getUrl())){
                            configAttributes = resourceMap.get(permission.getUrl());
                            configAttributes.add(configAttribute);
                        }else{
                            configAttributes = new ArrayList<ConfigAttribute>() ;
                            configAttributes.add(configAttribute);
                            resourceMap.put(permission.getUrl(), configAttributes);
                        }
                    }
                }
                System.out.println("11");
                Set<String> set = resourceMap.keySet();
                Iterator<String> it = set.iterator();
                int  i=0;
                while(it.hasNext()){
                    String s = it.next();
                    System.out.println(++i+"key:"+s+"|value:"+resourceMap.get(s));
                }
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

       
    }  
    /*  
     * 根据请求的资源地址，获取它所拥有的权限 
     */  
    @Override  
    public Collection<ConfigAttribute> getAttributes(Object obj)  
            throws IllegalArgumentException {  
        if(null==resourceMap||resourceMap.size() == 0) {
            loadResourcesDefine();
        }
        //获取请求的url地址  
        String url = ((FilterInvocation)obj).getRequestUrl();
        System.out.println("MySecurityMetadataSource:getAttributes()---------------请求地址为："+url);  
        Iterator<String> it = resourceMap.keySet().iterator();
        while(it.hasNext()){  
            String _url = it.next();  
            if(url.indexOf("?")!=-1){
                url = url.substring(0, url.indexOf("?"));
            }
            if(urlMatcher.match(_url,url)){
                System.out.println("MySecurityMetadataSource:getAttributes()---------------需要的权限是："+resourceMap.get(_url));  
                return resourceMap.get(_url);
            }
                
        }
        Collection<ConfigAttribute> nouse = new ArrayList<ConfigAttribute>();
        nouse.add(new SecurityConfig("无相应权限"));
        return nouse;
    }  
  
    @Override  
    public boolean supports(Class<?> arg0) {  
        System.out.println("MySecurityMetadataSource.supports()---------------------");  
        return true;  
    }  
      
}

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