springboot读取properties配置

简单配置文件读取

配置文件

custom.properties

student.name=abo你好
student.age=18

配置的实体类

package com.abo.springboot.config;

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

@Data
@Component //生命周期交由spring容器管理
// encoding 中文乱码问题解决
@PropertySource(value = "classpath:custom.properties",encoding = "UTF-8") //指定要读取的配置文件名称
@ConfigurationProperties("student") //指定要读取的属性的前缀
public class StudentConfig {
    private String name;
    private int age;
}

复杂配置文件读取

复杂的配置

def.country.cities[0]=beijing
def.country.cities[1]=beijing0
def.country.cities[2]=beijing1


ghi.country.departs[0].name=研发部 1
ghi.country.departs[0].office=1
ghi.country.departs[1].name=研发部 2
ghi.country.departs[1].office=2
ghi.country.departs[2].name=研发部 3
ghi.country.departs[2].office=3

对应的实体配置

@Data
@Component
@PropertySource(value = "classpath:custom.properties",encoding = "UTF-8")
@ConfigurationProperties("ghi.country")
public class CompanyConfig {
    //注意：departs字段名称一定要和配置文件中的一致
    //ghi.country.departs[0].name=研发部 1
    private List<Departs> departs;
}

@Data
public class Departs {
    private String name;
    private int office;
}