请问如何在项目初始化的时候获得WEB应用名称？

[比特灵]

例如http://localhost:8080/test/index.jsp
这里的test是项目名称，在server.xml中定义的，当它启动的时候如何获得test名称呢？
目前我是当用户请求过来的时候分析URL获得的，有没有办法在初始化的时候获得？

谢谢

[amos1989]

写一个监听器。。

在web.xml配置一下

监听器里面就可以获得了

[oO临时工Oo]

过滤器中

public void init(FilterConfig fConfig) throws ServletException {
appName = fConfig.getServletContext().getContextPath();
//...

}

Servlet中

request.getContextPath();

[小绵羊]

servletcontextlisting

[小绵羊]

servletcontextlistener
http://www.cnblogs.com/kentyshang/archive/2007/06/26/795878.html
相关用法

[五哥]

package com.ex ;

import java.io.PrintWriter ;
import java.io.FileOutputStream ;
import java.text.SimpleDateFormat ;
import javax.servlet.* ;

public class MyServletContextListener implements ServletContextListener, ServletContextAttributeListener{

	public void contextInitialized(ServletContextEvent event){
		
		ServletContext sc = event.getServletContext() ;
		
		print("ServletContext初始化..." +  sc.getContextPath();
	}
	
	public void contextDestroyed(ServletContextEvent event){
		print("ServletContext被释放...") ;
	}
	
	public void attributeAdded(ServletContextAttributeEvent event){
	
		print("增加ServletContext对象的一个属性：attributeAdded('" + event.getName() + "','" + event.getValue()+"')") ;
		
	}
	
	public void attributeRemoved(ServletContextAttributeEvent event){
		print("删除ServletContext对象的一个属性：attributeRemoved('" + event.getName() + "','" + event.getValue()+"')") ;
	}
	
	public void attributeReplaced(ServletContextAttributeEvent event){
		print("更新ServletContext对象的一个属性：attributeReplaced('" + event.getName() + "','" + event.getValue()+"')") ;
	}
	
	private void print(String msg){
	
		PrintWriter out = null ;
		try{
			out = new PrintWriter(new FileOutputStream("D:\\output.txt", true) );
			out.println(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.sss").format(new java.util.Date()) + "ContextListener: " + msg ) ;
			out.close() ;
	}	catch(Exception e){
		e.printStackTrace() ;
	}
	}
}

<?xml version="1.0" encoding="ISO-8859-1"?>

<web-app xmlns="http://java.sun.com/xml/ns/javaee"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
                      http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
  version="3.0"
  metadata-complete="true">  

    <description>
      Servlet and JSP Examples.
    </description>
    <display-name>Servlet and JSP Examples</display-name>
		<!--
		<welcome-list-file>
			<welcome-file>index.jsp</welcome-file>
		</welcome-list-file>
		-->
		<context-param>
			<param-name>breed</param-name>
			<param-value>Great Dane AA</param-value>
		</context-param>

		<servlet>
			<servlet-name>beer Advisor</servlet-name>
			<servlet-class>com.ex.web.BeerSelect</servlet-class>
		</servlet>
		<servlet-mapping>
			<servlet-name>beer Advisor</servlet-name>
			<url-pattern>/view/SelectBeer.do</url-pattern>
		</servlet-mapping>
		
		<servlet>
			<servlet-name>ListenerTester</servlet-name>
			<servlet-class>com.ex.ListenerTester</servlet-class>
		</servlet>
		<servlet-mapping>
			<servlet-name>ListenerTester</servlet-name>
			<url-pattern>/Tester.do</url-pattern>
		</servlet-mapping>
		
		<listener>
			<listener-class>com.ex.MyServletContextListener</listener-class>
		</listener>
		
</web-app>

[比特灵]

谢谢各位