Spring依賴註入構造器註入(通過構造函數註入)
阿新 • • 發佈:2017-08-01
ava import todo etag 管理 path 通過 ring classpath
在src目錄下建立applicationContext.xml (Spring 管理 bean的配置文件)
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> <bean id = "dog" class = "com.cc8w.Entity.Dog"> <constructor-arg> <value>旺財</value> </constructor-arg> <constructor-arg> <value>20</value> </constructor-arg> <constructor-arg> <value>雄性</value> </constructor-arg> </bean> </beans>
2.java的數據類型
package com.cc8w.Entity; public class Dog { private String names; private int age; private String sex; public Dog(String names, int age, String sex) { super();this.names = names; this.age = age; this.sex = sex; } public String getNames() { return names; } public void setNames(String names) { this.names = names; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public String getSex() { return sex; } public void setSex(String sex) { this.sex = sex; } }
3.測試類
package com.cc8w; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import com.cc8w.Entity.Dog; public class Test01 { public static void main(String[] args) { // TODO Auto-generated method stub //applicationContext 管理bean ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml"); Dog dog = (Dog)context.getBean("dog"); System.out.println(dog.getNames()); System.out.println(dog.getAge()); System.out.println(dog.getSex()); } }
結果:
Spring依賴註入構造器註入(通過構造函數註入)