快速搭建springmvc工程

灰太狼 2022-04-16 19:58 209阅读 0赞

*声明，使用 JDK8，maven3.54 , idea2018.2*

> ###### 步骤 ######
> 
> 1、pom.xml中配置mvc依赖；  
> 2、配置mvc的入口，即dispatcherServlet;  
> 3、创建Controller ，启动tomcat,进行测试；

*配置 pom依赖：*

<dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>4.3.1.RELEASE</version>
    </dependency>

*web.xml中配置 DispatcherServlet*

<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:springmvc.xml</param-value>
      </init-param>
    </servlet>
      <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>/</url-pattern>
      </servlet-mapping>
    </web-app>

*配置主配置文件 springmvc.xml ，配置 mvc的入口：*

<?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.baidu"/>
        
        <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        	
            <property name="prefix" value="/"/>
            
            <property name="suffix" value=".jsp"/>
        </bean>
    </beans>

> 目标资源路径： 前缀prefix+controller的返回值+后缀suffix  
> 譬如：下面定义的DemoController的返回值 “index” ，那么目标资源路径就是：/index.jsp  
> \->  
> 部分配置前缀写法：/WEB-INF/jsp/ ,那么jsp的资源是放在webapp/WEB-INF/jsp/目录之下；  
> 定义Controller如下：

*controller层：*

/** * @auther SyntacticSugar * @data 2018/11/13 0013下午 7:22 */
    @Controller
    public class DemoController { 
       @RequestMapping("/index")
        public  String  hello(){ 
           System.out.println("执行业务逻辑的代码");
           return "index";
        }
    }

> 使用外部tomcat,访问 [http://localhost:8080/index][http_localhost_8080_index]  
> 使用maven的tomcat，是以项目名打包的，[http://localhost:8080/springmvc\_day01/index][http_localhost_8080_springmvc_day01_index]  
> 控制台打印：执行业务逻辑的代码  
> 页面显示： hello world

![尼玛][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjMyMzgwMg_size_16_color_FFFFFF_t_70]

[http_localhost_8080_index]: http://localhost:8080/index
[http_localhost_8080_springmvc_day01_index]: http://localhost:8080/springmvc_day01/index
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjMyMzgwMg_size_16_color_FFFFFF_t_70]: /images/20220417/d72da3758ff5441a9beb901383900952.png