使用@PropertySource加载外部配置文件属性赋值

1、新建一个spring组件配置类：package com.gwolf.config;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import com.gwolf.vo.Connection;@Configurationpublic class MainConfigOfPropertyValues { @Bean public Connection connection() { return new Connection(); }}

3、在组件配置类中使用@PropertySource注解导入*.properties配置文件：package com.gwolf.config;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.context.annotation.PropertySource;import com.gwolf.vo.Connection;@Configuration@PropertySource("classpath:dbconfig.properties")public class MainConfigOfPropertyValues { @Bean public Connection connection() { return new Connection(); }}

5、编写一个junit测试类，得到容器中的bean对象的值，打印bean的值。pa罕铞泱殳ckage com.gwo造婷用痃lf.test;import org.junit.Test;import org.springframework.context.annotation.AnnotationConfigApplicationContext;import com.gwolf.config.MainConfigOfPropertyValues;public class ComponentTest { AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(MainConfigOfPropertyValues.class); @Test public void testImport() { String[] beanNames = applicationContext.getBeanDefinitionNames(); System.out.println(applicationContext.getBean("connection")); applicationContext.close(); }}