Java 用于spring boot中多个方法的MethodSecurityInterceptor

这与Mickeel Marrache关于如何使用不同方法的授权逻辑保护服务的回答有关

我更喜欢Maciej Ziarko使用而不是接受的响应，因为它使用相同的注释

@Secured

和不同的自定义参数

因为我使用的是没有XML配置的SpringBoot，所以我花了一段时间才弄明白如何做

这是我的答案

它只是解释了如何用Java配置替换xml配置。

（在我的更改之后，我将添加原始答案“以防万一”。）

要替换xml配置，请执行以下操作：

<sec:global-method-security secured-annotations="enabled"
                            access-decision-manager-ref="methodSecurityAccessDecisionManager">
</sec:global-method-security>

这两项工作都可以使用Java配置完成，如下所示：

import java.util.HashMap;
import java.util.Map;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.access.AccessDecisionManager;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.method.configuration.GlobalMethodSecurityConfiguration;


@Configuration
@EnableGlobalMethodSecurity(securedEnabled = true)
public class MethodSecurityConfig extends GlobalMethodSecurityConfiguration {

    private final Logger logger = LoggerFactory.getLogger(getClass());

    public AccessDecisionManager accessDecisionManager() {

        logger.debug("accessDecisionManager config...");

        Map<String, AccessDecisionStrategy> strategyMap = new HashMap<String, AccessDecisionStrategy>();

        strategyMap.put("GetByOwner", new GetByOwnerStrategy());

        return new MethodSecurityAccessDecisionManager(strategyMap);
    }

}

仅为了完整性，当用户不应继续时，已实施的策略必须返回

AccessDeniedException

或

InsufficientAuthenticationException

。以下是访问参数和所有参数的示例：

public class GetByOwnerStrategy implements AccessDecisionStrategy {
    @Override
    public void decide(Authentication authentication,
            MethodInvocation methodInvocation, ConfigAttribute configAttribute) {

        MethodInvocationExtractor<Object> extractor = new MethodInvocationExtractor<>(methodInvocation);
        Person person = (Person) extractor.getArg(0);
        String userId = (String) extractor.getArg(1);

        String username = authentication.getName();

        if (! ((userId.equals(username)) && (person.getSomeData().equals("SOMETHING") ) && ....) {
            throw new AccessDeniedException("Not enough privileges");
        }
    }
}

每个访问决策策略代表了不同的访问决策方式

您可以轻松地实施自己的策略（即使使用其他语言，例如Scala）：

公共类SomeStrategy实现AccessDecisionStrategy{

如您所见，我的AccessDecisionManager有一个策略图。manager使用的策略基于注释参数

public class MethodSecurityAccessDecisionManager implements AccessDecisionManager {

    private Map<String, AccessDecisionStrategy> strategyMap;

    public MethodSecurityAccessDecisionManager(Map<String, AccessDecisionStrategy> strategyMap) {
        this.strategyMap = strategyMap;
    }

    @Override
    public void decide(Authentication authentication, Object object, Collection<ConfigAttribute> configAttributes) throws AccessDeniedException, InsufficientAuthenticationException {
        ConfigAttribute configAttribute = getSingleConfigAttribute(configAttributes);
        AccessDecisionStrategy accessDecisionStrategy = strategyMap.get(configAttribute.getAttribute());
        if (accessDecisionStrategy == null) {
            throw new IllegalStateException("AccessDecisionStrategy with name "
                    + configAttribute.getAttribute() + " was not found!");
        }
        try {
            accessDecisionStrategy.decide(authentication, (MethodInvocation) object, configAttribute);
        } catch (ClassCastException e) {
            throw new IllegalStateException();
        }
    }

    private ConfigAttribute getSingleConfigAttribute(Collection<ConfigAttribute> configAttributes) {
        if (configAttributes == null || configAttributes.size() != 1) {
            throw new IllegalStateException("Invalid config attribute configuration");
        }
        return configAttributes.iterator().next();
    }

    @Override
    public boolean supports(ConfigAttribute attribute) {
        return true;
    }

    @Override
    public boolean supports(Class<?> clazz) {
        return clazz.equals(MethodInvocation.class);
    }
}

您可以实施和配置任意数量的策略：

<bean id="methodSecurityAccessDecisionManager"
      class="some.package.MethodSecurityAccessDecisionManager">

    <constructor-arg>
        <map>
            <entry key="GetByOwner">
                <bean class="some.package.GetByOwnerStrategy"/>
            </entry>

            <entry key="SomeOther">
                <bean class="some.package.SomeOtherStrategy"/>
            </entry>
        </map>
    </constructor-arg>

</bean>

要插入您键入的访问决策管理器，请执行以下操作：

<sec:global-method-security secured-annotations="enabled"
                            access-decision-manager-ref="methodSecurityAccessDecisionManager">
</sec:global-method-security>

我还实现了帮助器类来处理MethodInvocation参数：

import org.aopalliance.intercept.MethodInvocation;

public class MethodInvocationExtractor<ArgumentType> {

    private MethodInvocation methodInvocation;

    public MethodInvocationExtractor(MethodInvocation methodInvocation) {
        this.methodInvocation = methodInvocation;
    }

    public ArgumentType getArg(int num) {
        try {
            Object[] arguments = methodInvocation.getArguments();
            return (ArgumentType) arguments[num];
        } catch (ClassCastException | ArrayIndexOutOfBoundsException e) {
            throw new IllegalStateException();
        }
    }
}

import org.aopalliance.intercept.MethodInvocation；
公共类方法调用提取器{
私有方法调用方法调用；
公共MethodInvocation提取器（MethodInvocation MethodInvocation）{
this.methodInvocation=methodInvocation；
}
公共参数类型getArg（int num）{
试一试{
Object[]arguments=methodInvocation.getArguments（）；
返回（ArgumentType）参数[num]；
}catch（ClassCastException | ArrayIndexOutOfBoundsException e）{
抛出新的非法状态异常（）；
}
}
}

现在，您可以轻松地在策略代码中提取有趣的参数来做出决策：

假设我想得到Long类型的参数0：

MethodInvocationExtractor<Long> extractor = new MethodInvocationExtractor<>(methodInvocation);
Long id = extractor.getArg(0);

MethodInvocationExtractor=newmethodinvocationextractor（methodInvocation）；
Long id=extractor.getArg（0）；

12年11月14日14:40回答
马切吉·齐亚科

<bean id="methodSecurityAccessDecisionManager"
      class="some.package.MethodSecurityAccessDecisionManager">

    <constructor-arg>
        <map>
            <entry key="GetByOwner">
                <bean class="some.package.GetByOwnerStrategy"/>
            </entry>

            <entry key="SomeOther">
                <bean class="some.package.SomeOtherStrategy"/>
            </entry>
        </map>
    </constructor-arg>

</bean>

<sec:global-method-security secured-annotations="enabled"
                            access-decision-manager-ref="methodSecurityAccessDecisionManager">
</sec:global-method-security>

import org.aopalliance.intercept.MethodInvocation;

public class MethodInvocationExtractor<ArgumentType> {

    private MethodInvocation methodInvocation;

    public MethodInvocationExtractor(MethodInvocation methodInvocation) {
        this.methodInvocation = methodInvocation;
    }

    public ArgumentType getArg(int num) {
        try {
            Object[] arguments = methodInvocation.getArguments();
            return (ArgumentType) arguments[num];
        } catch (ClassCastException | ArrayIndexOutOfBoundsException e) {
            throw new IllegalStateException();
        }
    }
}

MethodInvocationExtractor<Long> extractor = new MethodInvocationExtractor<>(methodInvocation);
Long id = extractor.getArg(0);