Spring Boot中@ConfigurationProperties与@PropertySource的基本使用(读取指定的properties文件)

目录

 

 

基本理论

实例


 

基本理论

@ConfigurationProperties

1. 与@Bean结合为属性赋值;

2. 与@PropertySource(只能用于properties文件)结合读取指定文件

@ConfigurationProperties()默认从全局配置文件中获取值

 

因为person.properties这个不是全局文件,使用@ConfigurationProperties加载不到。如果想加载他,就得使用@PropertySource进行加载。

 

实例

程序结构如下:

Spring Boot中@ConfigurationProperties与@PropertySource的基本使用(读取指定的properties文件)_第1张图片

从person.properties中读取文件!

程序运行截图如下:

Spring Boot中@ConfigurationProperties与@PropertySource的基本使用(读取指定的properties文件)_第2张图片

源码如下:

Dog.java

package com.sourceinport.demo.bean;

public class Dog {

    private String name;
    private Integer age;

    @Override
    public String toString() {
        return "Dog{" +
                "name='" + name + '\'' +
                ", age=" + age +
                '}';
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }
}

Person.java

package com.sourceinport.demo.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;

@PropertySource(value = {"classpath:person.properties"})
@Component
@ConfigurationProperties(prefix = "person")
public class Person {

    private String lastName;

    private Integer age;

    private Boolean boss;
    private Date birth;
    private Map maps;
    private List lists;
    private Dog dog;

    @Override
    public String toString() {
        return "Person{" +
                "lastName='" + lastName + '\'' +
                ", age=" + age +
                ", boss=" + boss +
                ", birth=" + birth +
                ", maps=" + maps +
                ", lists=" + lists +
                ", dog=" + dog +
                '}';
    }

    public String getLastName() {
        return lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    public Boolean getBoss() {
        return boss;
    }

    public void setBoss(Boolean boss) {
        this.boss = boss;
    }

    public Date getBirth() {
        return birth;
    }

    public void setBirth(Date birth) {
        this.birth = birth;
    }

    public Map getMaps() {
        return maps;
    }

    public void setMaps(Map maps) {
        this.maps = maps;
    }

    public List getLists() {
        return lists;
    }

    public void setLists(List lists) {
        this.lists = lists;
    }

    public Dog getDog() {
        return dog;
    }

    public void setDog(Dog dog) {
        this.dog = dog;
    }
}
 
  

DemoApplication.java

package com.sourceinport.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;


@SpringBootApplication
public class DemoApplication {

    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args);
    }

}

person.properties

person.last-name=王二麻子
person.age=18
person.birth=2019/3/4
person.boss=false
person.maps.k1=v1
person.maps.k2=19
person.lists=a,b,c,d,e,f,g,h
person.dog.name=小白
person.dog.age=15

DemoApplicationTests.java

package com.sourceinport.demo;

import com.sourceinport.demo.bean.Person;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@SpringBootTest
public class DemoApplicationTests {

    @Autowired
    Person person;



    @Test
    public void contextLoads() {

        System.out.println(person);
    }
}

 

你可能感兴趣的:(Java,Spring,Boot)