idea中web项目的创建

在idea中创建web项目

1）创建一个普通的Java项目

2）右键项目选择ADD Framework Support

3）勾选JavaEE

4）添加jar包

点击Project Structure

5）部署Tomcat

配置项目访问路径

在Web工程中编写Servlet

在src下创建HelloServlet.java

package www.servlet;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import java.io.IOException;

import java.io.PrintWriter;

public class HelloServlet extends HttpServlet {

    @Override

    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

        PrintWriter pw=resp.getWriter();

        pw.println("HelloServlet");

        pw.flush();

        pw.close();

    }

    @Override

    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

        this.doGet(req,resp);

    }

}

在web.xml对该servlet进行配置

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"

         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"

         version="4.0">

    <!--为servlet取名-->

    <servlet>

        <servlet-name>servlet1</servlet-name>

        <servlet-class>www.servlet.HelloServlet</servlet-class>

    </servlet>

    <!--做URL映射-->

    <servlet-mapping>

        <servlet-name>servlet1</servlet-name>

        <url-pattern>/helloservlet</url-pattern>

    </servlet-mapping>

</web-app>

启动Tomcat

巴特西

idea中web项目的创建

在idea中创建web项目

4）添加jar包

在Web工程中编写Servlet

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