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Java读取.properties文件

2024-07-18 10:22:54   215人阅读

　　Java读取.properties配置文件时，可以使用apache的类库，需要用到如下的jar包：

　　

　　假如存在这样的两个配置文件：

　　db.properties

include = db.propertiesusername = Jason Lipassword = 824

　　user.properties

url = http://192.168.1.1port = 8080　

　　Java便可以这样读取：

　　ReadPropertiesFiles.java

package com.jason.test;import org.apache.commons.configuration.ConfigurationException;import org.apache.commons.configuration.PropertiesConfiguration;import org.apache.commons.configuration.reloading.FileChangedReloadingStrategy;/** * @ClassName: ReadPropertiesFiles * @Description: TODO(读取.properties配置文件) * @author Jason.XW.Li@pccw.com * @date 2014-8-19 下午2:48:25 * */public class ReadPropertiesFiles {            public static void main(String[] args) {                readFile();            }        public static void readFile(){                String fileName = "user.properties";                PropertiesConfiguration config = null;                String url = "";                String port = "";                String username = "";                String password = "";                                try {            config = new PropertiesConfiguration(fileName);            config.setReloadingStrategy(new FileChangedReloadingStrategy());//自动刷新配置文件            url = config.getString("url");            port = config.getString("port");            username = config.getString("username");            password = config.getString("password");                        config.setProperty("userno", "80546690");//该新加的键值对会保存在内存中            config.setAutoSave(true);//自动保存            System.out.println(url +":" + port + "&username = " + username +"&password = " + password + "&userno = " + config.getString("userno"));        } catch (ConfigurationException e) {            e.printStackTrace();        }                        }}

　　输出结果为：

http://192.168.1.1:8080&username = Jason Li&password = 824&userno = 80546690

 


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