SpringBoot系列之@PropertySource用法简介

继上篇博客：SpringBoot系列之@Value和@ConfigurationProperties用法对比之后，本博客继续介绍一下@PropertySource注解的用法，通过上一篇博客的知识，可以知道@Value和@ConfigurationProperties都可以用于获取配置文件的属性值，不过有个细节容易被忽略，那就是，这两个注解在Springboot项目中都是获取默认配置文件的属性值，也就是application.yml或者application.properties的属性值

不过我们想要配属性的话，肯定都不能全都往默认配置文件里堆的，如果想引用其它配置文件的属性值，就可以使用本博客介绍的@PropertySource注解

新建一个user.properties的配置文件：

user.userName= root

user.isAdmin= true

user.regTime= 2019/11/01

user.isOnline= 1

user.maps.k1=v1

user.maps.k2=v2

user.lists=list1,list2

user.address.tel= 15899988899

user.address.name=上海

使用@PropertySource("classpath:user.properties")获取对应的properties文件，再用@ConfigurationProperties(prefix = "user")进行属性映射

package org.muses.jeeplatform.bean;

import org.springframework.boot.context.properties.ConfigurationProperties;

import org.springframework.context.annotation.PropertySource;

import org.springframework.stereotype.Component;

import java.util.Date;

import java.util.List;

import java.util.Map;

@Component

@PropertySource("classpath:user.properties")

@ConfigurationProperties(prefix = "user")

public class User {

    private String userName;

    private boolean isAdmin;

    private Date regTime;

    private Long isOnline;

    private Map<String,Object> maps;

    private List<Object> lists;

    private Address address;

    @Override

    public String toString() {

        return "User{" +

                       "userName='" + userName + '\'' +

                       ", isAdmin=" + isAdmin +

                       ", regTime=" + regTime +

                       ", isOnline=" + isOnline +

                       ", maps=" + maps +

                       ", lists=" + lists +

                       ", address=" + address +

                       '}';

    }

    public String getUserName() {

        return userName;

    }

    public void setUserName(String userName) {

        this.userName = userName;

    }

    public boolean isAdmin() {

        return isAdmin;

    }

    public void setAdmin(boolean admin) {

        isAdmin = admin;

    }

    public Date getRegTime() {

        return regTime;

    }

    public void setRegTime(Date regTime) {

        this.regTime = regTime;

    }

    public Long getIsOnline() {

        return isOnline;

    }

    public void setIsOnline(Long isOnline) {

        this.isOnline = isOnline;

    }

    public Map<String, Object> getMaps() {

        return maps;

    }

    public void setMaps(Map<String, Object> maps) {

        this.maps = maps;

    }

    public List<Object> getLists() {

        return lists;

    }

    public void setLists(List<Object> lists) {

        this.lists = lists;

    }

    public Address getAddress() {

        return address;

    }

    public void setAddress(Address address) {

        this.address = address;

    }

}

对应的Address类：

package org.muses.jeeplatform.bean;

/**

 * <pre>

 *

 * </pre>

 *

 * @author nicky

 * <pre>

 * 修改记录

 *    修改后版本:     修改人：  修改日期: 2019年11月03日  修改内容:

 * </pre>

 */

public class Address {

    private String tel;

    private String name;

    @Override

    public String toString() {

        return "Address{" +

                       "tel='" + tel + '\'' +

                       ", name='" + name + '\'' +

                       '}';

    }

    public String getTel() {

        return tel;

    }

    public void setTel(String tel) {

        this.tel = tel;

    }

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }

}

写一个junit测试类

package org.muses.jeeplatform;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.muses.jeeplatform.bean.User;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)

@org.springframework.boot.test.context.SpringBootTest

public class SpringBootTest {

    @Autowired

    User user;

    @Test

    public void testConfigurationProperties(){

        System.out.println(user);

    }

}

读取成功，就不用将配置写在默认的application.properties里了

User{userName='root', isAdmin=false, regTime=Fri Nov 01 00:00:00 CST 2019, isOnline=1, maps={k1=v1, k2=v2}, lists=[list1, list2], address=Address{tel='15899988899', name='上海市'}}

注意：对于@PropertySource注解，默认是不支持yml配置文件读取的，需要修改重写才可以

巴特西

SpringBoot系列之@PropertySource用法简介

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