java - Spring:bean 作为 Java Config 中的构造函数参数

Question

翻译这个 bean 的正确方法是:

<bean id="artifactBinding" class="org.springframework.security.saml.processor.HTTPArtifactBinding">
    <constructor-arg ref="parserPool"/>
    <constructor-arg ref="velocityEngine"/>
    <constructor-arg>
        <bean class="org.springframework.security.saml.websso.ArtifactResolutionProfileImpl">
            <constructor-arg>
                <bean class="org.apache.commons.httpclient.HttpClient">
                    <constructor-arg>
                        <bean class="org.apache.commons.httpclient.MultiThreadedHttpConnectionManager"/>
                    </constructor-arg>
                </bean>
            </constructor-arg>
            <property name="processor">
                <bean class="org.springframework.security.saml.processor.SAMLProcessorImpl">
                    <constructor-arg ref="soapBinding"/>
                </bean>
            </property>
        </bean>
    </constructor-arg>
</bean>

<bean id="soapBinding" class="org.springframework.security.saml.processor.HTTPSOAP11Binding">
    <constructor-arg ref="parserPool"/>
</bean>

从 XML 到 Java-Config？

Answer 1

您还可以通过形成来缩小所需协作者对象的范围

@Bean
public HTTPArtifactBinding artifactBinding(ParserPool parserPool, VelocityEngine velocityEngine) {
    return new HTTPArtifactBinding(parserPool, velocityEngine, artifactResolutionProfile());
}

如果 Spring 可以解析 parserPool 和 velocityEngine，那么它可以注入(inject)您的 @Bean def 方法。