SpringBoot 003 配置文件

一、配置文件值注入

1、在src/main/resource下创建配置文件application.properties，内容如下：

person.lastName=hello___${lastName:wuyuning} //lastName不存在的时候，默认值是wuyuning
person.age=${random.int} //随机生成一个int范围的随机数
person.birth=2017/12/15
person.boss=false
person.maps.aa=beijing
person.maps.bb=shanghai
person.lists=a,b,c
person.dog.name=${hello:hello}___dog
person.dog.age=15
address=hangzhou
lastName=name***
password=def0000

备注：也可用application.yml的配置文件，如果两者同时存在，则yml的优先级高于properties

二、测试使用

1、指定bean对象

package com.wuyuning.springboot.bean;

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

import java.util.Date;
import java.util.List;
import java.util.Map;
//如果不是默认application.properties默认配置文件，需要加下面这行，指定配置文件
//@PropertySource(value = {"classpath:person.properties"})
@Component//将Person类注入到容器中

//告诉SpingBoot将被本类中的所有属性和配置文件中相关的配置进行绑定；
//类中属性必须与配置文件一致才能注入进来
@ConfigurationProperties(prefix = "person")

public class Person {
    private String lastName;
    private Integer age;
    private Boolean boss;
    private Date birth;
    private Map<String, Object>maps;
    private List<Object>lists;
    private Dog dog;

    public Person(){

    }


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

    public Person(String lastName, Integer age, Boolean boss, Date bir, Map<String, Object> maps, List<Object> lists, Dog dog) {
        this.lastName = lastName;
        this.age = age;
        this.boss = boss;
        this.birth = birth;
        this.maps = maps;
        this.lists = lists;
        this.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<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 Dog getDog() {
        return dog;
    }

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

}

2、测试。创建一个MyController类，内容如下：

package com.wuyuning.springboot.controller;

import com.wuyuning.springboot.bean.Person;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;


@Controller
public class MyController {
    @Autowired
    Person person;

    @Value("${address}")
    String address;
//
//    @Value("${user.lastName}")
//    String lastName;

    @RequestMapping("/yml1")//设置默认路径
    @ResponseBody
    public Person propertiesTest(){
        return person;
    }

    @RequestMapping("/yml2")//设置默认路径
    @ResponseBody
    public String propertiesTest02(){
        return address;
    }

    @Value("${password}")
    String password;
    @RequestMapping("/yml3")//设置默认路径
    @ResponseBody
    public String propertiesTes3(){
        return "profile = "+password;
    }


}

在网页中输入：

localhost:8080/yml1

localhost:8080/yml2

localhost:8080/yml3

Profifile环境切换：

我们在主配置文件编写的时候，文件名可以是 application-{profifile}.properties/yml 默认使用

application.properties 的配置；

例如：

application-dev.properties ：开发环境 application-test.properties ：测试环境 application

prod.properties ：生产环境