转载 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.Driver
url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8
username=root
password=

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

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作者：qq_33608562
来源：CSDN
原文：https://blog.csdn.net/qq_33608562/article/details/73527965?utm_source=copy
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