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Spring框架配置与实例化

最新推荐文章于 2024-05-02 22:42:11 发布

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本文介绍了使用Spring框架进行Bean的配置与实例化的过程。通过XML配置文件定义了两个类Teacher和Clazz的Bean实例，详细展示了如何设置属性值，并通过ClassPathXmlApplicationContext获取并打印这些Bean。

<?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:aop="http://www.springframework.org/schema/aop"
        xmlns:tx="http://www.springframework.org/schema/tx"
        xsi:schemaLocation="
            http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
            http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
            http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">

    <bean id="d1" class="com.dto.Teacher" scope="singleton">
        <property name="id" value="1"></property>
        <property name="name" value="永强"></property>
        <property name="sex" value="男"></property>
        <property name="age" value="20"></property>
    </bean>

    <bean id="d2" class="com.dto.Clazz" scope="prototype">
        <property name="cid" value="1"></property>
        <property name="cname" value="A"></property>
    </bean>
</beans>

package com.dto;

public class Clazz {
    private Integer cid;
    private String cname;
    public Clazz() {
        super();
        // TODO Auto-generated constructor stub
    }
    public Clazz(Integer cid, String cname) {
        super();
        this.cid = cid;
        this.cname = cname;
    }
    @Override
    public String toString() {
        return "Clazz [cid=" + cid + ", cname=" + cname + "]";
    }
    public Integer getCid() {
        return cid;
    }
    public void setCid(Integer cid) {
        this.cid = cid;
    }
    public String getCname() {
        return cname;
    }
    public void setCname(String cname) {
        this.cname = cname;
    }

}

package com.dto;

public class Teacher {
    private Integer id;
    private String name;
    private String sex;
    private Integer age;
    public Teacher() {
        super();
        // TODO Auto-generated constructor stub
    }
    public Teacher(Integer id, String name, String sex, Integer age) {
        super();
        this.id = id;
        this.name = name;
        this.sex = sex;
        this.age = age;
    }
    @Override
    public String toString() {
        return "Teacher [id=" + id + ", name=" + name + ", sex=" + sex
                + ", age=" + age + "]";
    }
    public Integer getId() {
        return id;
    }
    public void setId(Integer id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getSex() {
        return sex;
    }
    public void setSex(String sex) {
        this.sex = sex;
    }
    public Integer getAge() {
        return age;
    }
    public void setAge(Integer age) {
        this.age = age;
    }


}

package com.test;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.dto.Clazz;
import com.dto.Teacher;

public class Test {
    public static void main(String[] args) {
        //获取对象
        ApplicationContext a = new ClassPathXmlApplicationContext("applicationContext.xml");
        Teacher d1 = (Teacher) a.getBean("d1");
        System.out.println(d1);
        Clazz d2 = (Clazz) a.getBean("d2");
        System.out.println(d2);
    }
}

There is no solace above or below. Only us… Small, solitary, battling one another. I pray to myself, for myself.
天堂地狱都没法给你慰藉，只有我们自己：渺小，孤独，奋斗，与彼此抗争。我向自己祈祷，为自己祈祷。