[sping reveal] 9. SpringIOC container extension

About component-scan operations (removal, invalidation)

 

The configuration items in this spring can scan the classes under our corresponding package, and automatically add the classes with @component, @service, @controller, @repository to the spring container for hosting

 

Note, component-scan will open annotation-config by default

 

But it's not just that, we can limit the scope of it

 

 

We can include and exclude through include-fileter and exclude-filter

 

Note that there are 5 ways to select our range!

 

 

 

 

Before we exclude:

 

 

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-4.3.xsd">

    < context:component-scan base-package = "cn.cutter" > 
        <!-- Control the scan range, enter the container according to the annotation scan --> 
        < context:include-filter type = "annotation" expression = "cn.cutter" /> 
        <!-- <context:exclude-filter type="aspectj" expression="* cn.cutter.noscan.*"/> --> 
    </ context:component-scan > 
    <!-- <context:annotation -config /> This property is already true by default in the component -->
    
    <!-- 国际化配置 -->
    <bean id="messageSource" class="org.springframework.context.support.ResourceBundleMessageSource">
    
        <property name="basenames">
            <list>
                <value>i18/users</value>
                <value>i18/errormsg</value>
            </list>
        </property>
    
    </bean>
    
    <bean id="ttmRateService" class="cn.cutter.simplefx.service.impl.MockTTMRateServiceImpl"></bean>
    
    <bean id="fooBar" class="cn.cutter.start.resourceloader.FooBar" />
    
    <bean id="fooBar2" class="cn.cutter.start.resourceloader.FooBar2" />
    
    <bean id="resourceDemo" class="cn.cutter.start.resourceloader.ResourceDemo">
        <property name="resource">
            <value>classpath:applicationContext-bean.xml</value>
        </property>
    </bean>
    
    <!-- <bean id="myObject" class="cn.cutter.start.bean.MyObject"></bean> -->

    <!-- <alias name="FXNewsProvider" alias="provideralias"/> -->
    
    <!-- <bean id="test4key2" ></bean>
    
    <bean id="" class="..." lazy-init="true">
        <constructor-arg>
            <ref bean=""  parent=""/>
        </constructor-arg>
        
        <property name="test1">
            <value>ttttt1</value>
            <idref bean="ttttt1"/>
        </property>
        
        <property name="test2">
            <list>
                <value>test2value</value>
                <ref bean="test2222"/>
                <idref bean="test22222"/>
                <bean class="..."></bean>
            </list>
        </property>
        
        <property name="test3">
            <set>
                <value>test2value</value>
                <ref bean="test2222"/>
                <idref bean="test22222"/>
                <bean class="..."></bean>
            </set>
        </property>
        
        <property name="test4">
            <map>
                <entry key="test4key1">
                    <value>something</value>
                </entry>
                
                <entry key-ref="test5key2">
                    <list>
                        <value>test2value</value>
                        <ref bean="test2222"/>
                        <idref bean="test22222"/>
                        <bean class="..."></bean>
                    </list>
                </entry>
            </map>        
        </property>
        
        
    </bean> -->
    
</beans>

test

 

@Test
    public void testScan() {
        ApplicationContext ctx = this.before();
        
        //TestScan
        TestScan testScan = (TestScan) ctx.getBean("testScan");
        if(testScan == null) {
            System.out.println( "Scan Exclude" );
        } else {
            System.out.println( "Scan in" );
            testScan.sayHello();
        }
    }

 

 

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