标签：存在 好的 方法 模板 utf-8 support private 构造 lap
1.Spring基本框架的概念
Spring 框架是一个分层架构，由 7 个定义良好的模块组成。Spring模块构建在核心容器之上，核心容器定义创建、配置和管理bean的方式。组成Spring框架的每个模块（或组件）都可以单独存在，或者与其他一个或多个模块联合实现，一个支持DI/IOC和AOP开源的容器框架。
2.特点
DI依赖注入：组件以特定方式接收来自容器的资源注入
IOC控制反转：反转资源获取的方向
AOP面向切面编程
3.使用
(1)定义容器
(2)得到容器
具体的代码实现：
<?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:context="http://www.springframework.org/schema/context" xmlns:util="http://www.springframework.org/schema/util" xmlns:p="http://www.springframework.org/schema/p" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.2.xsd"> <bean id="car1" class="com.hanqi.test.Car"> <property name="carNumber" value="鲁C12345"></property> </bean> <bean id="car" class="com.hanqi.test.Car"> <property name="carNumber" value="鲁C14345"></property> </bean> <bean id="p1" class="com.hanqi.test.Person"> <constructor-arg name="name" value="张三"></constructor-arg> <constructor-arg name="age" value="30"></constructor-arg> <property name="car" ref="car1"></property> <property name="bankCards"> <list> <value>123456</value> <value>456798</value> <value>233339</value> </list> </property> </bean> <util:list id="bankCards"> <value>12344</value> <value>13444</value> <value>15344</value> </util:list> <!-- 使用p标签 --> <bean id="p2" class="com.hanqi.test.Person" p:name="李四" p:age="20" p:car-ref="car1" p:bankCards-ref="bankCards"></bean> <!-- 自动装配 <bean id="p3" class="com.hanqi.test.Person" autowire="byType"></bean>--> <!-- 自动装配 --> <bean id="p4" class="com.hanqi.test.Person" autowire="byName" p:name="王五" p:age="30"></bean> <bean id="p5" parent="p1" p:name="张小三" p:age="18"></bean> <!-- 定义模板，只能被继承，不能被外部使用 --> <bean id="m1" class="com.hanqi.test.Person" abstract="true" p:name="默认名称" p:age="20" p:car-ref="car1" p:bankCards-ref="bankCards"></bean> <!-- 默认是单例的 --> <bean id="p6" scope="prototype" parent="m1" p:name="王芳" p:age="38"></bean> <!-- 加载外部配置文件 --> <context:property-placeholder location="classpath:person.properties"/> <bean id="p7" class="com.hanqi.test.Person" p:name="${name}" p:age="${age}"></bean> </beans>
定义的Person类
package com.hanqi.test; import java.util.List; public class Person { private String name; private int age; private List<String> bankCards; private Car car; public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public List<String> getBankCards() { return bankCards; } public void setBankCards(List<String> bankCards) { this.bankCards = bankCards; } public Car getCar() { return car; } public void setCar(Car car) { this.car = car; } @Override public String toString() { return "Person [name=" + name + ", age=" + age + ", bankCards=" + bankCards + ", car=" + car + "]"; } public Person(String name, int age) { super(); this.name = name; this.age = age; System.out.println("带参数的构造方法Person被实例化了"); } public Person() { super(); System.out.println("不带参数的构造方法Person被实例化了"); } }
定义的Car类
package com.hanqi.test; public class Car { private String carNumber; public String getCarNumber() { return carNumber; } public void setCarNumber(String carNumber) { this.carNumber = carNumber; } @Override public String toString() { return "Car [carNumber=" + carNumber + "]"; } public Car() { super(); } public Car(String carNumber) { super(); this.carNumber = carNumber; } }
测试类
package com.hanqi.test; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class TestPerson { public static void main(String[] args) { // 1 加载容器 ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml"); // 2 从容器中获取对象 Person p1 =(Person)ac.getBean("p1"); System.out.println(p1); Person p2 =(Person)ac.getBean("p2"); System.out.println(p2); // Person p3 =(Person)ac.getBean("p3"); // System.out.println(p3); Person p4 =(Person)ac.getBean("p4"); System.out.println(p4); // 继承的对象 Person p5 =(Person)ac.getBean("p5"); System.out.println(p5); Person p6 =(Person)ac.getBean("p6"); System.out.println(p6); Person p6_1 =(Person)ac.getBean("p6"); System.out.println(p6_1); if(p6==p6_1) { System.out.println("p6 == p6_1"); } else { System.out.println("p6 !=p6_1"); } // 模板不能被调用 // Person m1 =(Person)ac.getBean("m1"); // System.out.println(m1); Person p7 =(Person)ac.getBean("p7"); System.out.println(p7); } }
标签：存在 好的 方法 模板 utf-8 support private 构造 lap
原文地址：http://www.cnblogs.com/miracle-0807/p/6184370.html
