Spring注解驱动开发（二）之@ComponentScans、@ComponentScan和@Filter注解

除了可以通过@Bean注解的方式为IoC容器注册组件，也可以通过包扫描（@ComponentScan注解）的方式为IoC容器注册组件

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项目目录结构

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项目环境搭建

• 创建Maven子工程demo-two，并在子工程的pom.xml文件中导入spring-context等依赖

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>spring-annotation</artifactId>
        <groupId>com.codermyu</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>demo-two</artifactId>

    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
        </dependency>
    </dependencies>


</project>

• 在controller包下创建UserController类

package com.codermyu.controller;

import org.springframework.stereotype.Controller;

/** @author Mingyu */
@Controller
public class UserController {
   
   }

• 在service包下创建UserService类

package com.codermyu.service;

import org.springframework.stereotype.Service;

/** @author Mingyu */