用filters定制化spring的包扫描

Fiter的信息如下：

Filter的类型有：annotation(这是spring默认的)，assignable,aspectj, regex,custom

首先看一下我这个demo的目录结构：

上图中所有被红色圆圈圈住的都是本demo要写的代码:

AppConfig的代码如下：

package com.timo.resourceJavaConfig;

import com.timo.entity.Master;

import org.springframework.context.annotation.ComponentScan;

import org.springframework.context.annotation.Configuration;

import org.springframework.context.annotation.FilterType;

import org.springframework.stereotype.Repository;

/**

 * The following example shows the configuration ignoring all @Repository annotations and using

 "stub" repositories instead.

 */

@Configuration

@ComponentScan(basePackageClasses = Master.class,

includeFilters = @ComponentScan.Filter(type = FilterType.REGEX, pattern =

".*Stub.*Repository"),

excludeFilters = @ComponentScan.Filter(Repository.class))

public class AppConfig {

}

等价于用xml写的：appconfig.xml的代码如下：

<?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:p="http://www.springframework.org/schema/p"

       xmlns:c="http://www.springframework.org/schema/c"

       xmlns:aop="http://www.springframework.org/schema/aop"

       xmlns:context="http://www.springframework.org/schema/context"

       xsi:schemaLocation="http://www.springframework.org/schema/beans

                http://www.springframework.org/schema/beans/spring-beans.xsd

http://www.springframework.org/schema/aop

http://www.springframework.org/schema/aop/spring-aop.xsd

http://www.springframework.org/schema/context

http://www.springframework.org/schema/context/spring-context.xsd">

    <!--<context:annotation-config/> only looks for annotations on beans in the same application context in which

    it is defined  RequiredAnnotationBeanPostProcessor   AutowiredAnnotaionBeanPostProcessor

    CommonAnnotationBeanPostProcessor PersistenceAnnotaionBeanPostProcessor-->

    <context:component-scan base-package="com.timo.entity" annotation-config="true">

        <context:include-filter type="regex" expression=".*Sub.*Respository"/>

        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Repository"/>

    </context:component-scan>

</beans>

com.timo.entity包下

Dog的代码如下：

package com.timo.entity;

import org.springframework.beans.factory.annotation.Value;

import org.springframework.stereotype.Repository;

import org.springframework.stereotype.Service;

/**

 * 这里可以写@Component,@Service,@Controller注解，写@Repository注解会报错

 * 报错的原因是在配置文件或者注解排除了@Repository.

 */

@Service

public class Dog {

    @Value("pug")

    private String name;

    @Value("")

    private Integer age;

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }

    public Integer getAge() {

        return age;

    }

    public void setAge(Integer age) {

        this.age = age;

    }

}

Master的代码如下：

package com.timo.entity;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Component;

@Component

public class Master {

    @Autowired

    private Dog dog;

    public Dog getDog() {

        return dog;

    }

    public void setDog(Dog dog) {

        this.dog = dog;

    }

    public void showDogInfo(){

        System.out.println("name="+dog.getName());

        System.out.println("age="+dog.getAge());

    }

}

测试用xml的代码如下：

Test4的代码如下：

package com.timo.test2;

import com.timo.entity.Dog;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class Test4 {

    public static void main(String[] args) {

        ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext("appconfig.xml");

        Dog dog = applicationContext.getBean(Dog.class);

        System.out.println("name="+dog.getName());

        System.out.println("age="+dog.getAge());

    }

}

测试用注解写的Test3的代码如下：

package com.timo.test2;

import com.timo.entity.Dog;

import com.timo.resourceJavaConfig.AppConfig;

import org.springframework.context.annotation.AnnotationConfigApplicationContext;

public class Test3 {

    public static void main(String[] args) {

        AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(AppConfig.class);

        Dog dog = applicationContext.getBean(Dog.class);

        System.out.println("dog="+dog);

    }

}

巴特西

用filters定制化spring的包扫描

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