初学servlet之使用web.xml配置

先写两个servlet,之后展示web.xml配置

package app01c;

import java.io.IOException;
import java.io.PrintWriter;

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

/**
 * 如何访问:
 *     http://localhost:端口号(使用tomcat没有修改过的是8080)/项目名/下面WebServlet中的urlPatterns
 *  如果使用的是web.xml配置文件,那么访问路径就变为:
 *  http://localhost:端口号(使用tomcat没有修改过的是8080)/项目名/web.xml中该servlet对应的url-pattern
 * @author Administrator
 *
 */
public class SimpleServlet extends HttpServlet {
private static final long serialVersiOnUID= 8946L;
    
    @Override
    public void doGet(HttpServletRequest request,
            HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html");
        PrintWriter writer = response.getWriter();
        writer.print("" +
                "Simple Servlet    }
}

package app01c;

import java.io.IOException;
import java.io.PrintWriter;

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

/**
 * 如何访问:
 *     http://localhost:端口号(使用tomcat没有修改过的是8080)/项目名/下面WebServlet中的urlPatterns
 *  如果使用的是web.xml配置文件,那么访问路径就变为:
 *  http://localhost:端口号(使用tomcat没有修改过的是8080)/项目名/web.xml中该servlet对应的url-pattern
 * @author Administrator
 *
 */
public class WelcomeServlet extends HttpServlet {
    private static final long serialVersiOnUID= 27126L;

    @Override
    public void doGet(HttpServletRequest request,
            HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html");
        PrintWriter writer = response.getWriter();
        writer.print(""
                + "Welcome");
    }
}

    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">

   
        
        SimpleServlet
       
        app01c.SimpleServlet
       
        10
   

   
        
        SimpleServlet
       
        /simple
     


   
        WelcomeServlet
        app01c.WelcomeServlet
        20
   

   
        WelcomeServlet
        /welcome
   

初学servlet之使用web.xml配置