怎么样读取tomcat 下的properties文件

Question

lz是用jsp吗？如下
<%@page import="java.io.InputStream" %>
<%@page import="java.util.Properties" %><%
    InputStream is= application.getResourceAsStream("/db.properties");
    Properties props = new Properties();
    props.load(is);
%>

Answer 1

lz是用jsp吗？如下
<%@page import="java.io.InputStream" %>
<%@page import="java.util.Properties" %><%
    InputStream is= application.getResourceAsStream("/db.properties");
    Properties props = new Properties();
    props.load(is);
%>

Answer 2

InputStream in = new FileInputStream(path);
Properties property = new Properties();
property.load(in);
ResourceBundle bundle = ResourceBundle.getBundle("db");
String driverClassName = bundle.getString("driverClassName");

Answer 3

  InputStream in = new FileInputStream(path);
  Properties property = new Properties();
  property.load(in);
 ResourceBundle bundle = ResourceBundle.getBundle("db");
String userName = bundle.getString("userName");

Answer 4

InputStream in = FileOperateUtils.class.getClassLoader().getResourceAsStream("/sys.properties");
if(in == null){
in = FileOperateUtils.class.getClassLoader().getClass().getResourceAsStream("/sys.properties");
}