常用的读取配置文件的方法（一）

项目中我们经常会用到配置文件的,今天我梳理常用的几种读取配置文件的方法spring boot提供了@ConfigurationProperties(prefix ="mail") @Value("${mail.tel}")两种注解下面举例说明准备好配置文件myproperties.properties

mail.username=shuist
mail.tel=13770012753
mail.password=123456

写配置类

package com.shihou.module.task.controller;

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

/**
* Created by Administrator on 2017/5/9.
*/
@Component
/*
*指定文件来源 不配置默认是application properties
* 有的版本会加@ConfigurationProperties(locations = "classpath:mail.properties", prefix = "mail")
* 我试的这个版本不支持
*/
@PropertySource("classpath:myproperties.properties")
@ConfigurationProperties(prefix = "mail")
public class MyProperties {
private String username;
private String tel;
private String password;

public String getUsername() {
return username;
}

public void setUsername(String username) {
this.username = username;
}

public String getTel() {
return tel;
}

public void setTel(String tel) {
this.tel = tel;
}

public String getPassword() {
return password;
}

public void setPassword(String password) {
this.password = password;
}
}

用的时候直接引入配置类即可

@Autowiredprivate MyProperties myProperties;

第二种方式更简便

@Value("${mail.tel}")private String tel;