IDEA springMVC - hello world

冷不防 2023-06-02 03:19 130阅读 0赞

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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

![1078922-20170103163243534-627025930.png][]

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>
    
        
        <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>
        
        <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>
        
        <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

![1078922-20170103163425706-962334600.png][]

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

![1078922-20170103163744316-1089925443.png][]

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

![1078922-20170103164831097-133663690.png][]

Configure...配置tomcat路径

![1078922-20170103164923878-1361106557.png][]

绿色+号，把项目加到部署列表

![1078922-20170103165002300-1839804333.png][]

9、启动tomcat服务

![1078922-20170103165554831-1168221778.png][]

![1078922-20170103165649987-2120705313.png][]

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

![1078922-20170103165835019-1883007306.png][]

转载于:https://www.cnblogs.com/dannyyao/p/6245532.html

[1078922-20170103163243534-627025930.png]: /images/20230601/2335f4733bfd48f9b31213585dc5b2bd.png
[1078922-20170103163425706-962334600.png]: /images/20230601/aba2d6b42e9348408be39679b6db0f9e.png
[1078922-20170103163744316-1089925443.png]: /images/20230601/2c46b9196014442593ee07e91c334559.png
[1078922-20170103164831097-133663690.png]: /images/20230601/ec21a90397e2419eadf4535ac1a13a2d.png
[1078922-20170103164923878-1361106557.png]: /images/20230601/732c457fa4a0430d9984c2fe18c9abac.png
[1078922-20170103165002300-1839804333.png]: /images/20230601/3a368054f9ed427fa43b538c786ea0d3.png
[1078922-20170103165554831-1168221778.png]: /images/20230601/01a7665ed32f41aebd899c838173d552.png
[1078922-20170103165649987-2120705313.png]: /images/20230601/911e39a8486d42939b4d9fba1634338d.png
[1078922-20170103165835019-1883007306.png]: /images/20230601/a76a3c34774d4e09ad8deee39d2ba629.png