技術標籤：Spring Boot 整合spring boot配置檔案Configuration屬性值java

1、實現CommandLineRunner介面，（org.springframework.boot.CommandLineRunner）

2、新增類註解：@Configuration，（org.springframework.context.annotation.Configuration）

3、通過@Autowired自動裝載介面ApplicationContext，（org.springframework.context.ApplicationContext）

4、在介面函式run中通過ApplicationContext獲取Environment，（Environment environment = applicationContext.getEnvironment();）

5、通過Environment獲取屬性值：environment.getProperty("spring.datasource.url")

程式碼示例（獲取配置檔案application.properties中server.port的值）：

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;

@Configuration
public class MyConfiguration implements CommandLineRunner {

	@Autowired
	ApplicationContext applicationContext;

	@Override
	public void run(String... args) throws Exception {
		Environment environment = applicationContext.getEnvironment();
		String serverPort = environment.getProperty("server.port");
		System.out.println("value of server.port is " + serverPort);
	}

}
 

啟動spring boot即會進入到run中