第八章 SpringBoot @ConfigurationProperties配置绑定

原始做法：读取到文件内容，再进行bean的绑定

public static void readProperties(String propertiesPath) throws IOException {Properties pps = new Properties();pps.load(MainApplication.class.getClassLoader().getResourceAsStream("application.properties"));Enumeration enum1 = pps.propertyNames();//得到配置文件的名字while(enum1.hasMoreElements()) {String strKey = (String) enum1.nextElement();String strValue = pps.getProperty(strKey);System.out.println(strKey + "=" + strValue);//封装到JavaBean。}}

2种方式

1. @ConfigurationProperties + @Component

@Component //很多属性配置类都不会加这个注解所，所以会用到2
@ConfigurationProperties(prefix = "mycar")
public class MyCarProperty {private String color;private String brand;

2. @EnableConfigurationProperties + @ConfigurationProperties

@EnableConfigurationProperties(Car.class)
//1、开启Car配置绑定功能
//2、把这个Car这个组件自动注册到容器中
public class MyConfig {
}

@RestController
public class Controller{@AutowiredMyCarProperty myCarProperty;@RequestMapping("/car")public MyCarProperty carRequest(){return myCarProperty;}
}