SpringDemo ----- 扫描注入

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一、创建Maven项目

二、创建pom.xml文件

<?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">    <modelVersion>4.0.0</modelVersion>    <groupId>SpringDemo</groupId>    <artifactId>SpringDemo</artifactId>    <version>1.0-SNAPSHOT</version>    <dependencies>        <!-- Spring Core -->        <!-- http://mvnrepository.com/artifact/org.springframework/spring-core -->        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-core</artifactId>            <version>4.1.4.RELEASE</version>        </dependency>        <!-- Spring Context -->        <!-- http://mvnrepository.com/artifact/org.springframework/spring-context -->        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-context</artifactId>            <version>4.1.4.RELEASE</version>        </dependency>        <dependency>            <groupId>junit</groupId>            <artifactId>junit</artifactId>            <version>4.10</version>        </dependency>    </dependencies></project>

三、创建实体类Student.java

package com.csdn.cn;import org.springframework.stereotype.Component;import java.util.List;import java.util.Map;@Componentpublic class Student {    private String name;    private Integer age;    private String address;    private List<String> list;    private Map<String,String> map;    //省略get，set  ，toString 方法}

四、创建application.xml

<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/beanshttp://www.springframework.org/schema/beans/spring-beans-2.5.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-2.5.xsd">    <context:component-scan base-package="com.csdn.cn"></context:component-scan></beans>

五、创建Test.java

package com.csdn.cn;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;/** * Created by HP on 2017/7/27. */public class Test {    @org.junit.Test    public void test(){        ApplicationContext applicationContext = new ClassPathXmlApplicationContext("application.xml");        Student student = (Student) applicationContext.getBean("student");        System.out.println(student);    }}

输出：Student{name='null', age=null, address='null', list=null, map=null}

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