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IDEA springMVC - hello world
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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
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
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
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
Configure...配置tomcat路径
绿色+号，把项目加到部署列表
9、启动tomcat服务
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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