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XML配置类 <?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:p="htt

<bean id="ComponentAddress" class="com.chen.model.ComponentAddress" scope="singleton" /> 如上scope="singleton"相当于不写scope

使用前要先导入约束 xmlns:p="http://www.springframework.org/schema/p" xmlns:c="http://www.springframework.org/schema/c" 官方文档地址 https://docs.spring.io/spring-framework/docs/current/reference/html/core.html#beans-p-namespace

<?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://w

package com.chenxb.dao; public interface UserDao { void getUser(); } package com.chenxb.dao; public class UserDaoImpl implements UserDao { @Override public void getUser() { System.out.println("获取User"); } } package com.chenxb.d