如何用ServletConfig从init-param获取参数？

2.用ServletConfig从init-param获取：

就单纯获取init-param而言，上一种和这一种方法一样。不过ServletConfig还有很多其他的功能。见例子。

例：1.2.1

ServletHello1.java：

package com;

import java.io.IOException;

import java.io.PrintWriter;

import javax.servlet.ServletConfig;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

public class ServletHello1 extends HttpServlet {

protected void doGet(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

ServletConfig c = getServletConfig();

System.out.println(c.getServletName()+c.getInitParameter("zhangsan"));

}

}

更多请看：https://blog.csdn.net/qq_44591615/article/details/109275414