使用Spring Security 3进行LDAP身份验证

Question

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:s="http://www.springframework.org/schema/security"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-3.1.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd">

    <!-- Security Configuration -->
    <s:http>
        <s:intercept-url pattern="/page/tosecure/*" access="ROLE_USER" />
        <s:http-basic />
    </s:http>

    <s:ldap-server root="dc=ldap,dc=sub,dc=myorg,dc=org" url="ldap.sub.myorg.org" port="636" />

    <s:authentication-manager>
        <s:ldap-authentication-provider user-dn-pattern="uid={0},cn=users" />
        <s:authentication-provider ref="ldapAuthProvider" />
    </s:authentication-manager>

    <bean id="contextSource" class="org.springframework.security.ldap.DefaultSpringSecurityContextSource">
        <constructor-arg value="ldaps://ldap.sub.myorg.org:636/dc=ldap,dc=sub,dc=myorg,dc=org" />
    </bean>

    <bean id="ldapAuthProvider" class="org.springframework.security.ldap.authentication.LdapAuthenticationProvider">
        <constructor-arg>
            <bean class="org.springframework.security.ldap.authentication.BindAuthenticator">
                <constructor-arg ref="contextSource" />
                <property name="userDnPatterns">
                    <list>
                        <value>uid={0},cn=users</value>
                    </list>
                </property>
            </bean>
        </constructor-arg>
        <constructor-arg>
            <bean class="org.springframework.security.ldap.userdetails.DefaultLdapAuthoritiesPopulator">
                <constructor-arg ref="contextSource" />
                <constructor-arg value="cn=groups" />
                <property name="groupRoleAttribute" value="cn" />
            </bean>
        </constructor-arg>
    </bean>

</beans>

下面是我得到的错误（堆栈跟踪中列出的最后几个原因）

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.security.securityContextSource': Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.springframework.security.ldap.DefaultSpringSecurityContextSource]: Constructor threw exception; nested exception is org.springframework.ldap.BadLdapGrammarException: Failed to parse DN; nested exception is org.springframework.ldap.core.TokenMgrError: Lexical error at line 1, column 5.  Encountered: "." (46), after : ""
    at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:288)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1035)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:939)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:323)
    ... 106 more
Caused by: org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.springframework.security.ldap.DefaultSpringSecurityContextSource]: Constructor threw exception; nested exception is org.springframework.ldap.BadLdapGrammarException: Failed to parse DN; nested exception is org.springframework.ldap.core.TokenMgrError: Lexical error at line 1, column 5.  Encountered: "." (46), after : ""
    at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:162)
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:121)
    at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:280)
    ... 115 more
Caused by: org.springframework.ldap.BadLdapGrammarException: Failed to parse DN; nested exception is org.springframework.ldap.core.TokenMgrError: Lexical error at line 1, column 5.  Encountered: "." (46), after : ""
    at org.springframework.ldap.core.DistinguishedName.parse(DistinguishedName.java:224)
    at org.springframework.ldap.core.DistinguishedName.<init>(DistinguishedName.java:174)
    at org.springframework.ldap.core.support.AbstractContextSource.setBase(AbstractContextSource.java:207)
    at org.springframework.security.ldap.DefaultSpringSecurityContextSource.<init>(DefaultSpringSecurityContextSource.java:67)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
    at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:147)
    ... 117 more
Caused by: org.springframework.ldap.core.TokenMgrError: Lexical error at line 1, column 5.  Encountered: "." (46), after : ""
    at org.springframework.ldap.core.DnParserImplTokenManager.getNextToken(DnParserImplTokenManager.java:678)
    at org.springframework.ldap.core.DnParserImpl.jj_consume_token(DnParserImpl.java:231)
    at org.springframework.ldap.core.DnParserImpl.SpacedEquals(DnParserImpl.java:114)
    at org.springframework.ldap.core.DnParserImpl.attributeTypeAndValue(DnParserImpl.java:94)
    at org.springframework.ldap.core.DnParserImpl.rdn(DnParserImpl.java:58)
    at org.springframework.ldap.core.DnParserImpl.dn(DnParserImpl.java:23)
    at org.springframework.ldap.core.DistinguishedName.parse(DistinguishedName.java:218)

它似乎不喜欢contextSource bean的constructor-arg中列出的URL，尽管我不确定原因。

另外，我怀疑这个配置的其他部分是不正确的。例如，我在ldap-server标记和contextSource bean中定义了ldap服务器URL。这似乎是不必要的重复，但在示例中是这样做的。有人能好好看看配置，以确保它是正常的吗？

Answer 1

您是否尝试删除ldap-server元素？您应该不需要它，而且还没有用正确的URL配置它（它可能应该以LDAP://或LDAPS/)开头。

您链接到的示例使用嵌入式服务器，并演示了相同的名称空间和bean配置。

group属性的默认值为cn，因此这对您的设置是正确的。Javadoc forDefaultLDAPAuthoritiesPopulator很好地描述了它的工作方式。