Spring boot源码分析-ConfigurationProperties(11)
- 该功能可以实现批量添加Properties参数
@ConfigurationProperties(locations = "classpath:test.properties",
prefix = "leone")
public class TestProperties {
private String name;
private int age;
private Mark mark;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public Mark getMark() {
return mark;
}
public void setMark(Mark mark) {
this.mark = mark;
}
}
@SpringBootApplication
@EnableConfigurationProperties(TestProperties.class)
public class Chapter2Application {
public static void main(String[] args) {
SpringApplication.run(Chapter2Application.class, args);
}
}
test.properties
leone.name=infotech
leone.age=99
leone.mark.dmark=dddddd
- 工作原理
前面我们已经分析过了,spring的starter再启动的时候回加载configure
那么我们去看看spring-boot-autoconfigure的配置文件spring.factories
可以看到org.springframework.boot.autoconfigure.EnableAutoConfiguration的配置中有一个org.springframework.boot.autoconfigure.context.ConfigurationPropertiesAutoConfiguration继续看进去,calss上有个注解EnableConfigurationProperties,再进去发现是一个EnableConfigurationPropertiesImportSelector
这时候我们就知道了,在启动的过程中 spring会去EnableConfigurationPropertiesImportSelector来注册bean 并且处理