Web开发基础_Servlet学习_0008_Servlet路径

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路径

 URI和URL的区别

案例演示：

工程案例目录结构

web.xml：

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
  <display-name>Servlet03</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
  
  <servlet>
  	<servlet-name>abc</servlet-name>
  	<servlet-class>web.AbcServlet</servlet-class>
  </servlet>
  <servlet-mapping>
  	<servlet-name>abc</servlet-name>
  	<url-pattern>/abc</url-pattern>
  </servlet-mapping>
</web-app>

AbcServlet.java

package web;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class AbcServlet extends HttpServlet{

	@Override
	protected void service(HttpServletRequest req, 
			HttpServletResponse res) throws ServletException, IOException {
			//项目名
			System.out.println(req.getContextPath());
			//Servlet网名
			System.out.println(req.getServletPath());
			//URI:Servlet绝对路径
			System.out.println(req.getRequestURI());
			//URL:Servlet完整路径
			System.out.println(req.getRequestURL());
	}

	
}

控制台输出信息与Tomcat部署工程目录结构：