Spring 获取配置文件的值

package com.hafiz.www.util;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import java.io.*;import java.util.Properties;/** * Desc:properties文件获取工具类 * Created by hafiz.zhang on 2016/9/15. */public class PropertyUtil {    private static final Logger logger = LoggerFactory.getLogger(PropertyUtil.class);    private static Properties props;    static{        loadProps();    }    synchronized static private void loadProps(){        logger.info("开始加载properties文件内容.......");        props = new Properties();        InputStream in = null;        try {　　　　　　　
                  in = PropertyUtil.class.getClassLoader().getResourceAsStream("jdbc.properties");　　　　　　  
                  //in = PropertyUtil.class.getResourceAsStream("/jdbc.properties");            props.load(in);        } catch (FileNotFoundException e) {            logger.error("jdbc.properties文件未找到");        } catch (IOException e) {            logger.error("出现IOException");        } finally {            try {                if(null != in) {                    in.close();                }            } catch (IOException e) {                logger.error("jdbc.properties文件流关闭出现异常");            }        }        logger.info("加载properties文件内容完成...........");        logger.info("properties文件内容：" + props);    }    public static String getProperty(String key){        if(null == props) {            loadProps();        }        return props.getProperty(key);    }    public static String getProperty(String key, String defaultValue) {        if(null == props) {            loadProps();        }        return props.getProperty(key, defaultValue);    }}

 

 Spring boot 获取配置文件的值

  使用注解  @Value

@Controllerpublic class TestController {    @Value("${server.port:Hello World22}")    private String message = "Hello World";    @RequestMapping("/test")    public void test(){        System.out.println("message:"+message);    }}