一、配置类
package cn.edu.tju.config;import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.PropertySource;
import org.springframework.stereotype.Component;@Component
@ConfigurationProperties(prefix = "your")
@PropertySource("classpath:data/01.properties")
public class YourConfig {private String name;private int age;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;}
}
二、data子目录下的01.properties
your.age=32
your.name=Chopin
三、controller中注入配置类:
package cn.edu.tju.controller;import cn.edu.tju.config.YourConfig;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;@RestController
public class TestController {@Autowiredprivate YourConfig yourConfig;@RequestMapping("/prop")public String getProp(){return yourConfig.getName() + " " + yourConfig.getAge();}
}
注意:
如果application.properties中也有your.age和your.name的配置,它会覆盖@PropertySource注解指定的属性文件中的配置,比如如下application.properties:
server.port=9032
spring.datasource.url=jdbc:mysql://xxx.xxx.xxx.xxx/test
spring.datasource.username=root
spring.datasource.password=My
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
your.age=23
your.name=tju
还可以在@ConfigurationProperties中使用JSR303校验。
1)加依赖
org.springframework.boot
spring-boot-starter-validation
2)在@ConfigurationProperties修饰的类上加@Validated注解,在属性上加校验注解: