java获取配置文件.properties中的数据，具体内容如下所示：

方法太多，只写一种比较简单的。

文件test1.properties内容

test1 = 123;test2=3211 Properties prop = new Properties(); prop.load(new FileInputStream("src/test1.properties")); System.out.println(prop.get("test1"));

输出

123;1

简单封装一下，完整代码

package propertis.test;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.IOException;import java.util.Properties;public class Test { /** * @param args * @throws IOException * @throws FileNotFoundException */ public static void main(String[] args) throws FileNotFoundException, IOException { // TODO Auto-generated method stub Properties prop = new Properties(); prop.load(new FileInputStream("src/test1.properties")); System.out.println(prop.get("test1")); System.out.println(ProUtil.getTest1Value("test1")); System.out.println(ProUtil.getTest1Value("test2")); }}class ProUtil{ private static Properties prop = new Properties(); static{ try { prop.load(new FileInputStream("src/test1.properties")); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } public static Object getTest1Value(String key){ return prop.get(key); }}

输出

123;
123;
321

下面看下Java 读取Properties配置文件

方法：

Properties properties = new Properties();FileInputStream in = new FileInputStream("**.properties");properties.load(in);in.close();

配置文件：

driver=com.mysql.jdbc.Driverurl=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8username=rootpassword=

代码实现：

import java.io.FileInputStream;import java.util.Properties;public class PropertiesTest { private static final String PROPERTIES_NAME = "db.properties"; public static String DB_DRIVER = null; public static String DB_URL = null; public static String DB_USER = null; public static String DB_PWD = null; static{ FileInputStream in = null; try{ Properties properties = new Properties(); in = new FileInputStream(PROPERTIES_NAME); properties.load(in); DB_DRIVER = properties.getProperty("driver"); DB_URL = properties.getProperty("url"); DB_USER = properties.getProperty("username"); DB_PWD = properties.getProperty("passworld"); System.out.println("读取配置信息成功！"); showConfig(); }catch(Exception e){ e.printStackTrace(); System.out.println("读取配置信息失败！"); }finally{ if(in != null){ try{ in.close(); }catch(Exception e){ e.printStackTrace(); } } } } private static void showConfig(){ System.out.println("-----------------------配置信息-----------------"); System.out.println("dirver: "+DB_DRIVER); System.out.println("url: "+DB_URL); System.out.println("user: "+DB_USER); System.out.println("passworld: "+DB_PWD); System.out.println("----------------------------------------------"); } public static void main(String[] args){ }}

运行结果：

读取配置信息成功！

-----------------------配置信息-----------------
dirver: com.mysql.jdbc.Driver
url: jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8
user: root
passworld: null
----------------------------------------------

总结

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