Spring Security怎样使用URL地址进行权限控制

时间:2021-04-02 人气:0

这篇文章主要介绍了Spring Security如何使用URL地址进行权限控制,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下

目的是：系统内存在很多不同的用户，每个用户具有不同的资源访问权限，具体表现就是某个用户对于某个URL是无权限访问的。需要Spring Security忙我们过滤。

FilterSecurityInterceptor是Spring Security进行URL权限判断的，FilterSecurityInterceptor又继承于AbstractSecurityInterceptor，由此可推测，我们可以新增一个Interceptor继承AbstractSecurityInterceptor，实现我们自己的权限校验逻辑。

查看父类及其代码逻辑，有几点必须要注意：

1、主要鉴权方法是调用父类中accessDecisionManager的decide值，所以我们需要自己实现一个accessDecisionManager

2、父类中存在抽象方法public abstract SecurityMetadataSource obtainSecurityMetadataSource();作用是获取URL及用户角色对应的关系。我们需要加入自己的实现。

以下是部分代码实现

主要拦截器JwtUrlSecurityInterceptor，需要在WebSecurityConfig(Spring Security配置)文件中注册

//这个拦截器用来实现按照用户权限，对所请求的url进行拦截
@Bean
  public JwtUrlSecurityInterceptor jwtUrlSecurityInterceptorBean() throws Exception{
	return new JwtUrlSecurityInterceptor();
}
@Override
  protected void configure(HttpSecurity httpSecurity) throws Exception {
	...
	    httpSecurity.addFilterBefore(jwtUrlSecurityInterceptorBean(), FilterSecurityInterceptor.class);
	...
}

实现自定义的accessDecisionManager

package org.zerhusen.security.dsuri;
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 java.util.Collection;
/**
 * Created by dingshuo on 2017/6/28.
 */
public class MyAccessDecisionManager implements AccessDecisionManager {
	@Override
	  public void decide(Authentication authentication, Object object, Collection<ConfigAttribute> configAttributes) throws AccessDeniedException, InsufficientAuthenticationException {
		System.out.println("自定义的接口");
		throw new AccessDeniedException("no right");
	}
	@Override
	  public Boolean supports(ConfigAttribute attribute) {
		return true;
	}
	@Override
	  public Boolean supports(Class<?> clazz) {
		return true;
	}
}

实现自定义的资源SecurityMetadataSource

package org.zerhusen.security.dsuri;
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 java.util.*;
/**
 * Created by dingshuo on 2017/6/28.
 */
public class MyInvocationSecurityMetadataSource implements FilterInvocationSecurityMetadataSource {
	private static Map<String, Collection<ConfigAttribute>> resourceMap = null;
	@Autowired
	  UrlMatcher urlMatcher;
	public MyInvocationSecurityMetadataSource() {
		//这里可以查数据库实现
		//注入dao即可
		resourceMap = new HashMap<String, Collection<ConfigAttribute>>();
		Collection<ConfigAttribute> atts = new ArrayList<ConfigAttribute>();
		ConfigAttribute ca = new SecurityConfig("ROLE_USER1");
		atts.add(ca);
		resourceMap.put("/index.jsp", atts);
		Collection<ConfigAttribute> attsno =new ArrayList<ConfigAttribute>();
		ConfigAttribute cano = new SecurityConfig("ROLE_NO");
		attsno.add(cano);
		resourceMap.put("/other.jsp", attsno);
	}
	@Override
	  public Collection<ConfigAttribute> getAttributes(Object object) throws IllegalArgumentException {
		String url = ((FilterInvocation)object).getRequestUrl();
		Iterator<String> ite = resourceMap.keySet().iterator();
		while (ite.hasNext()) {
			String resURL = ite.next();
			if (url.equals("/protected")) {
				return resourceMap.get(resURL);
			}
		}
		return null;
	}
	@Override
	  public Collection<ConfigAttribute> getAllConfigAttributes() {
		return null;
	}
	@Override
	  public Boolean supports(Class<?> clazz) {
		return true;
	}
}

实现JwtUrlSecurityInterceptor

package org.zerhusen.security.dsuri;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.security.access.AccessDecisionManager;
import org.springframework.security.access.SecurityMetadataSource;
import org.springframework.security.access.intercept.AbstractSecurityInterceptor;
import org.springframework.security.access.intercept.InterceptorStatusToken;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.web.FilterInvocation;
import javax.servlet.*;
import java.io.IOException;
/**
 * Created by dingshuo on 2017/6/28.
 */
public class JwtUrlSecurityInterceptor extends AbstractSecurityInterceptor implements
    Filter {
	@Autowired
	  public void setMyAccessDecisionManager(){
		super.setAccessDecisionManager(myAccessDecisionManagerBean());
	}
	@Bean
	  public MyAccessDecisionManager myAccessDecisionManagerBean(){
		return new MyAccessDecisionManager();
	}
	@Bean
	  public MyInvocationSecurityMetadataSource myInvocationSecurityMetadataSourceBean(){
		return new MyInvocationSecurityMetadataSource();
	}
	@Override
	  public void init(FilterConfig filterConfig) throws ServletException {
	}
	@Override
	  public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
		FilterInvocation fi = new FilterInvocation(request, response, chain);
		invoke(fi);
	}
	@Override
	  public void destroy() {
	}
	@Override
	  public Class<?> getSecureObjectClass() {
		return FilterInvocation.class;
	}
	@Override
	  public SecurityMetadataSource obtainSecurityMetadataSource() {
		return this.myInvocationSecurityMetadataSourceBean();
	}
	public void invoke(FilterInvocation fi) throws IOException, ServletException {
		InterceptorStatusToken token = super.beforeInvocation(fi);
		try {
			fi.getChain().doFilter(fi.getRequest(), fi.getResponse());
		}
		finally {
			super.afterInvocation(token, null);
		}
	}
}

如上是简单的URL权限控制

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