一个完整JavaWeb项目历程01 — Hello World

一、环境搭建

后续有时间补上

二、配置运行环境Tomcat

三、创建JavaWeb项目

四、新建一个com.fwbc.javaweb包

五、新建一个HelloJavaWeb类

六、修改HelloJavaWeb代码

package com.fwbc.javaweb;

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 HelloJavaWeb extends HttpServlet {
    private static final long serialVersionUID = 1L;

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.getWriter().append("Hello JavaWeb");
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doGet(request, response);
    }    
}

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七、配置web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
  <display-name>JavaWeb</display-name>

  <servlet>
      <servlet-name>HelloJavaWeb</servlet-name>
      <servlet-class>com.fwbc.javaweb.HelloJavaWeb</servlet-class>
  </servlet>

  <servlet-mapping>
      <servlet-name>HelloJavaWeb</servlet-name>
      <url-pattern>/HelloJavaWeb</url-pattern>
  </servlet-mapping>
</web-app>

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八、运行JavaWeb