Home >Java >javaTutorial >How to specify the value of the configuration properties file in Springboot
test.number=123456789
Here we take the most direct method (It can also be obtained through annotations). We specially prepared a tool class PropertiesUtil.java:
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")); } }
The above is the detailed content of How to specify the value of the configuration properties file in Springboot. For more information, please follow other related articles on the PHP Chinese website!