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 {
<!--第一种，通过类加载器进行获取properties文件流-->
in = PropertyUtil.class.getClassLoader().getResourceAsStream("jdbc.properties");
<!--第二种，通过类进行获取properties文件流-->
//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
@Controller
public class TestController { @Value("${server.port:Hello World22}")
private String message = "Hello World"; @RequestMapping("/test")
public void test(){
System.out.println("message:"+message);
}
}