spring person
2021-04-14 15:27
标签：配置文件 set tom frame core col 类别 ons tostring IOC： 由spring 进行创建、管理、配置 官网：https://docs.spring.io/spring/docs/5.2.7.RELEASE/spring-framework-reference/core.html#beans-child-bean-definitions 一个简单的例子 准配工作：导包 1、pojo实体类 2、配置元数据 3、实例化容器 注意：package com.wt.pojo;
public class Person {
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Override
public String toString() {
return "Person{" +
"name=‘" + name + ‘\‘‘ +
‘}‘;
}
}
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
https://www.springframework.org/schema/beans/spring-beans.xsd">
bean id="person" class="com.wt.pojo.Person">
property name="name" value="tom"/>
bean>
beans>
import com.wt.pojo.Person;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class MyTest {
@Test
public void showResult(){
ApplicationContext context = new ClassPathXmlApplicationContext( "beans.xml");
// person 对应配置文件的 id
Person person = (Person) context.getBean("person");
String personString = person.toString();
System.out.println(personString);
}
}
value 是普通变量
ref 指向自定义的类别名
例子
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 https://www.springframework.org/schema/beans/spring-beans.xsd"> bean id="daoHello" class="com.wt.dao.UserDaoHello" /> bean id="daoImp" class="com.wt.dao.UserDaoImp" /> bean id="serviceImp" class="com.wt.service.UserServiceImp"> property name="userDao" ref="daoHello" /> bean> beans>
spring person
标签：配置文件 set tom frame core col 类别 ons tostring
原文地址：https://www.cnblogs.com/wt7018/p/13336683.html