1、先在pom文件加入依赖

<dependency>
    <groupId>com.alibaba.nacos</groupId>
    <artifactId>nacos-spring-context</artifactId>
    <version>1.0.0</version>
    <exclusions>
        <exclusion>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
        </exclusion>
        <exclusion>
            <groupId>javax.annotation</groupId>
            <artifactId>javax.annotation-api</artifactId>
        </exclusion>
    </exclusions>
</dependency>

2、在applicationContext.xml同级目录添加一个nacos配置文件

<?xml version="1.0" encoding="UTF-8" ?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:nacos="http://nacos.io/schema/nacos"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://nacos.io/schema/nacos http://nacos.io/schema/nacos.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">


    <!--开启注解-->
    <nacos:annotation-driven read-type-from-daraId = "false"></nacos:annotation-driven>
    <!--指定nacos配置地址-->
    <nacos:global-properties server-addr="ip:端口号"/>
    <!--指定dataId,group-id, 是否是自动刷新-->
    <nacos:property-source data-id="data-id" group-id="group-id" auto-refreshed="true"/>
</beans>

3、在applicationContext.xml文件中引入nacos配置文件

<import resource="classpath:spring/applicationContext-nacos.xml" />

放在beans里面的最上面一行

4、重新加载pom，clean、install