Springboot怎么指定获取配置properties文件的值

test.number=123456789

package com.test.webflux.util; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.util.StringUtils; import java.io.IOException; import java.io.InputStreamReader; import java.util.Properties; /** * 配置文件读取 * * @Author: JCccc * @Des: ElegantDay */ public class PropertiesUtil { private static Logger log = LoggerFactory.getLogger(PropertiesUtil.class); private static Properties props; //项目根目录文件夹内读取 // static { // if (props == null) { // props = new Properties(); // try { // props.load(new FileInputStream("/testDemo/config/test_config.properties")); // } catch (IOException e) { // log.error("配置文件读取异常", e); // } // } // } //resource文件夹内读取 static { String fileName = "test_config.properties"; props = new Properties(); try { props.load(new InputStreamReader(PropertiesUtil.class.getClassLoader().getResourceAsStream(fileName), "UTF-8")); } catch (IOException e) { log.error("配置文件读取异常", e); } } /** * 根据配置文件中的key获取value * @param key * @return */ public static String getProperty(String key) { String value = props.getProperty(key.trim()); if (StringUtils.isEmpty(value)) { return null; } return value.trim(); } /** * 根据配置文件中的key获取value (当获取不到值赋予默认值) * @param key * @param defaultValue * @return */ public static String getProperty(String key, String defaultValue) { String value = props.getProperty(key.trim()); if (StringUtils.isEmpty(value)) { value = defaultValue; } return value.trim(); } public static void main(String[] args) { System.out.println("配置文件中有key&value："+PropertiesUtil.getProperty("test.number")); System.out.println("配置文件无有key&value，赋予默认值"+PropertiesUtil.getProperty("test.numberNone","默认值 JCccc")); } }