1.application范围内的参数,存放在servletcontext中,在web.xml中配置如下:
代码如下:
context-param
param-namecontext/param/param-name
param-valueavalible during application/param-value
/context-param
2.servlet范围内的参数,只能在servlet的init()方法中取得,在web.xml中配置如下:
代码如下:
servlet
servlet-nameMainServlet/servlet-name
servlet-classcom.wes.controller.MainServlet/servlet-class
init-param
param-nameparam1/param-name
param-valueavalible in servlet init()/param-value
/init-param
load-on-startup0/load-on-startup
/servlet
在servlet中可以通过代码分别取用:
代码如下:
package com.qisentech.controller;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
public class MainServlet extends HttpServlet {
public MainServlet() {
super();
}
public void init() throws ServletException {
System.out.println(this.getInitParameter("param1"));
System.out.println(getServletContext().getInitParameter("context/param"));
}
}
第一种参数在servlet里面可以通过getServletContext().getInitParameter("context/param")得到
第二种参数只能在servlet的init()方法中通过this.getInitParameter("param1")取 猜你喜欢