SpringBoot获得application.properties中数据的几种方式
第一种方式
- @SpringBootApplication
- public class SpringBoot01Application {
-
- public static void main(String[] args) {
- ConfigurableApplicationContext context=SpringApplication.run(SpringBoot01Application.class, args);
- <span style="color:#FF0000;">String str1=context.getEnvironment().getProperty("aaa");</span>
- System.out.println(str1);
- }
- }
第二种方式（自动装配到Bean中）
- import org.springframework.beans.factory.annotation.Autowired;
- import org.springframework.beans.factory.annotation.Value;
- import org.springframework.core.env.Environment;
- import org.springframework.stereotype.Component;
-
- @Component
- public class Student {
-
-
-
- @Autowired
- private Environment env;
-
- public void speak() {
- System.out.println("=========>" + env.getProperty("aaa"));
-
- }
-
- }
-
-
第三种方式（使用@value注解）
- package com.example.demo.entity;
-
- import org.springframework.beans.factory.annotation.Value;
- import org.springframework.context.annotation.PropertySource;
- import org.springframework.stereotype.Component;
-
- @Component
- @PropertySource("classpath:jdbc.properties")//如果是application.properties，就不用写@PropertyScource("application.properties")，其他名字用些
- public class Jdbc {
-
- @Value("${jdbc.user}")
- private String user;
-
- @Value("${jdbc.password}")
- private String password;
-
- public void speack(){
- System.out.println("username:"+user+"------"+"password:"+password);
- }
-
- }
SpringBoot获得application.properties中数据的几种方式