IntelliJ IDEA 15开发Java Maven项目

1.安装好之后开始创建项目

2.选择Maven类型项目，选择JDK

3.设置Maven坐标

略......

4.需要给新项目Add Framework support

5.选择Java EE项目模板

6.项目结构

修改pom.xml文件增加以下依赖

<dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.2</version>
        </dependency>
</dependencies>

7.配置Tomcat

8.需要注意的就是热部署问题。需要选择On frame dectivation为：Update classes and resources需要注意第一次不会有这个选项，需要先配置Deployment才可以

9.设置Deployment

10.如果需要可以设置Application context

11.运行Tomcat

12.jsp页面正确展现在浏览器中

13.新建一个Servlet

14.这里需要注意的是选中Create Java EE6 annotated class会默认创建带上注解的Serlvet，这里我们不选

不选的话会自动帮我们生成<servlet>标签，选了的话就没有了

15.在web.xml中配置Servlet

public class HelloServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=utf-8");
        response.setCharacterEncoding("utf-8");
        PrintWriter out = response.getWriter();
        out.print(new Date().toLocaleString());
    }

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

<?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_3_1.xsd"
         version="3.1">
    <servlet>
        <servlet-name>HelloServlet</servlet-name>
        <servlet-class>com.winner.HelloServlet</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>HelloServlet</servlet-name>
        <url-pattern>/hello</url-pattern>
    </servlet-mapping>
</web-app>

16.部署方法