IDEA springMVC - hello world

时间：2024-11-13 23:03:32

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ide用IDEA，用maven管理依赖包

1、建立一个maven-webapp项目：File->New->Project

IDEA springMVC - hello world

2、pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">

  <modelVersion>4.0.0</modelVersion>

  <groupId>mvnspringmvc</groupId>

  <artifactId>mvnspringmvc</artifactId>

  <packaging>war</packaging>

  <version>1.0-SNAPSHOT</version>

  <name>mvnspringmvc Maven Webapp</name>

  <url>http://maven.apache.org</url>

<dependencies>

    <dependency>

      <groupId>junit</groupId>

      <artifactId>junit</artifactId>

      <version>3.8.1</version>

      <scope>test</scope>

    </dependency>

    <!--spring-->

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-core</artifactId>

      <version>4.3.5.RELEASE</version>

    </dependency>

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-web</artifactId>

      <version>4.3.5.RELEASE</version>

    </dependency>

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-webmvc</artifactId>

      <version>4.3.5.RELEASE</version>

    </dependency>

    <!--注解-->

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-test</artifactId>

      <version>4.2.7.RELEASE</version>

    </dependency>

    <dependency>

      <groupId>javax.servlet</groupId>

      <artifactId>servlet-api</artifactId>

      <version>2.3</version>

    </dependency>

    <!-- java.lang.ClassNotFoundException: javax.servlet.jsp.jstl.core.Config -->

    <dependency>

      <groupId>javax.servlet</groupId>

      <artifactId>jstl</artifactId>

      <version>1.2</version>

    </dependency>

  </dependencies>

  <build>

    <finalName>mvnspringmvc</finalName>

  </build>

</project>

3、编辑代码路径/src/main/java，添加controller包

IDEA springMVC - hello world

4、添加MainController.java，响应“/index”请求

package yao.danny.controller;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;

@Controller

public class MainController{

    @RequestMapping(value = "/index")

    public String index(){

        return "index";

    }

}

5、web.xml中加入servlet，servlet-mapping

<!DOCTYPE web-app PUBLIC

 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"

 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>

  <display-name>Archetype Created Web Application</display-name>

  <servlet>

    <servlet-name>mvc-dispatcher</servlet-name>

    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

    <load-on-startup>1</load-on-startup>

  </servlet>

  <servlet-mapping>

    <servlet-name>mvc-dispatcher</servlet-name>

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

  </servlet-mapping>

</web-app>

6、添加 mvc-dispatcher-servlet.xml

IDEA springMVC - hello world

手动添加下面红色粗体部分

context:component-scan - 扫描controller包

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

<beans xmlns="http://www.springframework.org/schema/beans"

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

       xmlns:context="http://www.springframework.org/schema/context"

       xsi:schemaLocation="http://www.springframework.org/schema/beans

       http://www.springframework.org/schema/beans/spring-beans.xsd

       http://www.springframework.org/schema/context

       http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd  ">

    <context:component-scan base-package="yao.danny.controller"/>

    <mvc:annotation-driven/>

    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">

        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>

        <property name="prefix" value="/WEB-INF/pages/"/>

        <property name="suffix" value=".jsp"/>

    </bean>

</beans>

7、添加view： WEB-INF/pages/index.jsp

<html>

<body>

<h2>Page returned from controller.</h2>

</body>

</html>

8、 配置tomcat服务

IDEA springMVC - hello world

Configure...配置tomcat路径

IDEA springMVC - hello world

绿色+号，把项目加到部署列表

IDEA springMVC - hello world

9、启动tomcat服务

IDEA springMVC - hello world

IDEA springMVC - hello world

10、访问 http://localhost:8080/index

返回如下，说明controller抓到了请求，处理成功后转发到index.jsp

IDEA springMVC - hello world

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