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•application.properties
•application.yml
person.last-name=\u674E\u56DB
person.age=12
person.birth=2017/12/15
person.boss=false
person.maps.k1=v1
person.maps.k2=14
person.lists=a,b,c
person.dog.name=dog
person.dog.age=15
1 通过@ConfigurationPropertie注入 :该注入适用于全局application.properties , @ConfigurationProperties：告诉SpringBoot将本类中的所有属性和配置文件中相关的配置进行绑定
@Component
@ConfigurationProperties(prefix = "person")
//@Validated
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;
// Set Get methods
}
2 通过@Value注入 ,该注入适用于全局application.properties
@Component
//@ConfigurationProperties(prefix = "person")
//@Validated
public class Person {
@Value("${person.lastName}")
private String lastName;
@Value("${person.age}")
private Integer age;
@Value("true}")
private Boolean boss;
@Value("${person.birth}")
private Date birth;
@Value("${person.maps}")
private Map<String,Object> maps;
private List<Object> lists;
private Dog dog;
// Set Get methods
}
3 通过 @PropertySource(value = {“classpath:person.properties”}) 该注入适用于非局部自定义属性值的配置
@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<String,Object> maps;
private List<Object> lists;
private Dog dog;
}
如果属性的key value配置是在spring XML配置文件中，则可以用以下方法获取
Bean.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
<bean id="helloService" class="com.atguigu.springboot.service.HelloService"></bean>
</beans>
4 通过@ImportResource(locations = {“classpath:beans.xml”})
@ImportResource：导入Spring的配置文件，让配置文件里面的内容生效； Spring Boot里面没有Spring的配置文件，我们自己编写的配置文件，也不能自动识别； 想让Spring的配置文件生效，必须加载进来；@ImportResource标注在一个配置类上
@ImportResource(locations = {"classpath:beans.xml"})
@SpringBootApplication
public class SpringBoot02ConfigApplication {
public static void main(String[] args) {
SpringApplication.run(SpringBoot02ConfigApplication.class, args);
}
}
import com.atguigu.springboot.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.context.ApplicationContext;
import org.springframework.test.context.junit4.SpringRunner;
@RunWith(SpringRunner.class)
@SpringBootTest
public class SpringBoot02ConfigApplicationTests {
@Autowired
Person person;
@Autowired
ApplicationContext ioc;
@Test
public void testHelloService(){
Object hellobean = ioc.getBean("helloService02");
boolean b = ioc.containsBean("helloService02");
System.out.println(hellobean);
}
}
5 通过注解的方式类@Configuration 获取spring配置的内容
SpringBoot推荐给容器中添加组件的方式；推荐使用全注解的方式
1、配置类@Configuration 替代 Spring配置文件
2、使用@Bean给容器中添加组件
package com.atguigu.springboot.config;
import com.atguigu.springboot.service.HelloService;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
/**
* @Configuration：指明当前类是一个配置类；就是来替代之前的Spring配置文件
*
* 在配置文件中用<bean><bean/>标签添加组件
*
*/
@Configuration
public class MyAppConfig {
//将方法的返回值添加到容器中；容器中这个组件默认的id就是方法名
@Bean
public HelloService helloServiceHere(){
System.out.println("配置类@Bean给容器中添加组件了...");
return new HelloService();
}
}
注意：要获取的bean的名字，必须跟@Configuration文件中标注为@Bean所获取的对象的方法名一致，即 ”helloServiceHere“
@RunWith(SpringRunner.class)
@SpringBootTest
public class SpringBoot02ConfigApplicationTests {
@Autowired
Person person;
@Autowired
ApplicationContext ioc;
@Test
public void testHelloService(){
Object hellobean = ioc.getBean("helloServiceHere");
System.out.println(hellobean);
}
}