Spring的@PropertySource注解

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/yaomingyang/article/details/84554323

通过@PropertySource注解将properties文件中的值存储到Environment中，Environment接口提供提供方法去读取配置文件中的值，参数是properties文件中配置的key值。

1. 定义一个People类读取jdbc.properties配置文件中的值

package com.config.server.endpoint;


import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.PropertySource;
import org.springframework.stereotype.Component;



@PropertySource(value = {"classpath:jdbc.properties"})
@Component
@ConfigurationProperties(prefix = "com.yaomy.demo")
public class People {
    private String username;
    private String password;
    private int age;
    private int sex;

    //省略setter和getter方法
}

2. properties配置文件

com.yaomy.demo.username=玛丽66
com.yaomy.demo.password=12345666
com.yaomy.demo.age=1266
com.yaomy.demo.sex=166

3. 测试主类

package com.config.server;

import com.config.server.endpoint.People;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.config.server.EnableConfigServer;
import org.springframework.context.ApplicationContext;

@EnableConfigServer
@SpringBootApplication
public class ServerApplication {

    public static void main(String[] args) {
        ApplicationContext context = SpringApplication.run(ServerApplication.class, args);
        People obj = context.getBean("people", People.class);
        System.out.println(obj.getUsername());
        People obj1 = context.getBean("people", People.class);
        System.out.println(obj1.getSex());


    }
}

4. 输出的结果是

玛丽66
166