idea：用maven、Spring+SpringMVC写HelloWorld

一.新建一个工程，选择maven

二.配置文件：

先配置pom文件添加依赖，在配置Spring和Springmvc相关文件。

1.pom文件

<?xml version="1.0" encoding="UTF-8"?><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>  <packaging>war</packaging>  <name>pet1</name>  <groupId>com.nuist.pet 1</groupId>  <artifactId>pet1</artifactId>  <version>1.0-SNAPSHOT</version>  <build>    <plugins>      <plugin>        <groupId>org.mortbay.jetty</groupId>        <artifactId>maven-jetty-plugin</artifactId>        <version>6.1.7</version>        <configuration>          <connectors>            <connector implementation="org.mortbay.jetty.nio.SelectChannelConnector">              <port>8888</port>              <maxIdleTime>30000</maxIdleTime>            </connector>          </connectors>          <webAppSourceDirectory>${project.build.directory}/${pom.artifactId}-${pom.version}</webAppSourceDirectory>          <contextPath>/</contextPath>        </configuration>      </plugin>    </plugins>  </build>      <properties>      <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>      <spring.version>4.3.4.RELEASE</spring.version>    </properties>    <!-- 依赖关联 -->    <dependencies>      <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-webmvc</artifactId>        <version>${spring.version}</version>      </dependency>      <!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->      <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-context</artifactId>        <version>4.3.4.Release</version>      </dependency>      <!-- https://mvnrepository.com/artifact/org.springframework/spring-core -->      <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-core</artifactId>        <version>4.3.4.RELEASE</version>      </dependency>      <!-- https://mvnrepository.com/artifact/org.springframework/spring-beans -->      <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-beans</artifactId>        <version>4.3.4.RELEASE</version>      </dependency>      <!-- https://mvnrepository.com/artifact/org.springframework/spring-web -->      <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-web</artifactId>        <version>4.3.4.RELEASE</version>      </dependency>      <!-- https://mvnrepository.com/artifact/org.springframework/spring-aop -->      <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-aop</artifactId>        <version>4.3.4.RELEASE</version>      </dependency>      <!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->      <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-jdbc</artifactId>        <version>4.3.4.RELEASE</version>      </dependency>      <!-- https://mvnrepository.com/artifact/org.springframework/spring-tx -->      <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-tx</artifactId>        <version>4.3.4.RELEASE</version>      </dependency>      <!-- https://mvnrepository.com/artifact/org.springframework/spring-context-support -->      <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-context-support</artifactId>        <version>4.3.4.RELEASE</version>      </dependency>      <!-- https://mvnrepository.com/artifact/org.springframework/spring-aspects -->      <dependency>        <groupId>org.springframework</groupId>        <artifactId>spring-aspects</artifactId>        <version>4.3.4.RELEASE</version>      </dependency>      <!-- https://mvnrepository.com/artifact/junit/junit -->      <dependency>        <groupId>junit</groupId>        <artifactId>junit</artifactId>        <version>3.8.1</version>        <scope>test</scope>      </dependency>      <dependency>        <groupId>junit</groupId>        <artifactId>junit</artifactId>        <version>4.12</version>      </dependency>      <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->      <dependency>        <groupId>javax.servlet</groupId>        <artifactId>javax.servlet-api</artifactId>        <version>3.1.0</version>        <scope>provided</scope>      </dependency>      <dependency>        <groupId>log4j</groupId>        <artifactId>log4j</artifactId>        <version>1.2.16</version>      </dependency>  </dependencies></project>

这里配了些后面开发必要的依赖，还有的多余，如不需要自行删去。

2.web.xml

<?xml version="1.0" encoding="UTF-8"?><web-app version="2.4"         xmlns="http://java.sun.com/xml/ns/j2ee"         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"         xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">  <servlet>    <servlet-name>springmvc</servlet-name>    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>    <init-param>      <param-name>contextConfigLocation</param-name>      <param-value>classpath:/spring/springmvc.xml</param-value>    </init-param>    <load-on-startup>1</load-on-startup>  </servlet>  <servlet-mapping>    <servlet-name>springmvc</servlet-name>    <url-pattern>/</url-pattern>  </servlet-mapping></web-app>        

3.把其自带的servlet配置文件删去，在resource下新建一个springmvc配置文件

<?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:context="http://www.springframework.org/schema/context"       xmlns:mvc="http://www.springframework.org/schema/mvc"       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">    <!--扫描包-->    <context:component-scan base-package="com.xuhui.pet" /><context:annotation-config />    <!-- 静态资源(js、image等)的访问 -->    <!--<mvc:default-servlet-handler></mvc:default-servlet-handler>-->    <mvc:annotation-driven></mvc:annotation-driven>    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">        <property name="prefix" value="/WEB-INF/views/" />        <property name="suffix" value=".jsp" />    </bean></beans>

同级目录下配置spring.xml

<?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: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">    <context:component-scan base-package="com.xuhui.pet"></context:component-scan></beans>

4.写controller

package com.xuhui.pet.controller;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.ResponseBody;/** * Created by Administrator on 2017/11/23 0023. */@Controllerpublic class Test {    @RequestMapping("/sss")    @ResponseBody    public String aa(){        return "sss";    }}

5.在webapp/WEB-INF下新建views包，写jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %><html><head>    <title>Title</title></head><body>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa</body></html>

至此文件相关配置完毕，下面把项目部署到服务器，配置tomcat

点击红框绿色向下的箭头，显示如下页面

点击“+”，找到Tomcat Server选择Local

点击上图中的Deployment

点击加号选择Artifact

选择第二个点击OK

部署完成，可以调试啦

正确显示即成功