IntelliJ IDEA 15 创建maven项目(小白)

我这里安装的是

IntelliJ IDEA 2018.3.4 x64

tomcat apache-tomcat-9.0.12

maven 3.6.0

点击createNew project

选择Maven 点击Next

GroupId（一般填公司名）和ArtifactId 随便填写也可填写一致的名称也可，继续点击Next

点击Finish，之后稍等片刻，即可看到项目创建目录

因为在开始创建过程中没有选择用骨架创建，所以才会出来上面这种目录结构

接下来就开始创建web项目了

右键点击Maven_text目录，出现Add Framework Support，点击这个

勾选 Web Application，点击OK

点击之后就能在项目里面看到web文件夹

之后先配置好pom.xml下的web项目依赖包：

在pom.xml中添加如下代码

   <dependencies>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>servlet-api</artifactId>
        <version>3.0-alpha-1</version>
    </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.2</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
        </dependency>
    </dependencies>

写好之后点击下面蓝色的字 Enable Auto-Import

这个时候你就能在右边看到自动加载的Maven包了

然后在src/main/java/目录下新建一个servlet

Name任意起个test_Servlet,点击OK

编写test_Serlet.java

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.annotation.WebServlet;
import java.io.IOException;
import java.io.PrintWriter;

@WebServlet(name="test_Servlet")
public class test_Servlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //设置网页响应类型
        response.setContentType("text/html");
        //实现具体操作
        PrintWriter out = response.getWriter();
        out.println("This is a test servlet page");
    }
}

编写web.xml

<?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">
    <servlet>
        <servlet-name>test_Servlet</servlet-name>
        <servlet-class>test_Servlet</servlet-class>
    </servlet>

    <servlet-mapping>
        <servlet-name>test_Servlet</servlet-name>
        <url-pattern>/test_Servlet</url-pattern>
    </servlet-mapping>

</web-app>