1、spring_helloworld

01、spring IOC基本使用

(1)使用maven的方式来构建项目
定义项目的groupId、artifactId
（2）添加对应的pom依赖

4.0.0

com.mashibingspringHelloword231.0-SNAPSHOT    11    11            org.springframework        spring-context        5.3.9    

(3)编写配置

1、实体类创建
Person.java

package com.mashibing.bean;
public class Person {
private Long id;
private String name;
private Integer age;
private String gender;

public Person() {}public Person(Long id, String name, Integer age, String gender) {    this.id = id;    this.name = name;    this.age = age;    this.gender = gender;}@Overridepublic String toString() {    return "Person{" +            "id=" + id +            ", name='" + name + '\'' +            ", age=" + age +            ", gender='" + gender + '\'' +            '}';}public Long getId() {    return id;}public void setId(Long id) {    this.id = id;}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;}public String getGender() {    return gender;}public void setGender(String gender) {    this.gender = gender;}

}
2、spring.xml配置

3、编写测试类测试类SpringDemoTest.java

public class SpringDemoTest {
public static void main(String[] args) {
//ApplicationContext:表示ioc容器
//ClassPathXmlApplicationContext:表示从当前classpath路径中获取xml文件的配置
//根据spring的配置文件来获取ioc容器对象
ApplicationContext context=new ClassPathXmlApplicationContext(“spring.xml”);
Person person = context.getBean(“person”, Person.class);
System.out.println(person);
}
}
4，测试结果
Person{id=3625221991********, name=’单强’, age=32, gender=’男’}