一,自定义自动装备Bean:
@EnableConfigurationProperties(SimpleBean.class) //开启ConfigurationProperties注解
@ConfigurationProperties(prefix = "simplebean")
public class SimpleBean {
private int id;
private String name;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Override
public String toString() {
return "SimpleBean{" +
"id=" + id +
", name='" + name + '\'' +
'}';
}
}
二,自动转配类
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Configuration
//@ConditionalOnClass(SimpleBean.class) //当类路径下有指定类的情况下,就会进行自动配置
@ConditionalOnClass
public class MyAutoConfiguration {
static {
System.out.println("MyAutoConfiguration init....");
}
@Bean
public SimpleBean simpleBean() {
return new SimpleBean();
}
}
三,pom.xml引入
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-autoconfigure</artifactId>
<version>2.2.2.RELEASE</version>
</dependency>
</dependencies>
☆四,配置加载配置文件
添加位置:
配置文件内容: