1.SpringMVC入门

Bertha 。 2022-06-17 10:10 166阅读 0赞

0.创建meaven项目

![Center][]

1.创建源文件目录，不然无法创建java文件

![Center 1][]

2.导入如下的依赖:

<dependencies>
        <dependency>
          <groupId>junit</groupId>
          <artifactId>junit</artifactId>
          <version>3.8.1</version>
          <scope>test</scope>
        </dependency>
    
        
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-context</artifactId>
          <version>4.3.7.RELEASE</version>
        </dependency>
    
        
        <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-webmvc</artifactId>
          <version>4.3.7.RELEASE</version>
        </dependency>
    
      </dependencies>

3.配置web.xml(具体配置如下,主要是配置一个DispatcherServlet)

<web-app>
      
      <servlet>
        <servlet-name>springDispatcherServlet</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>
        <load-on-startup>1</load-on-startup>
      </servlet>
      <servlet-mapping>
        <servlet-name>springDispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
      </servlet-mapping>
    </web-app>

4.创建SpringMvc的配置文件:

<?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"
           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.lsj"></context:component-scan>
            
            <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
                <property name="prefix" value="/WEB-INF/views/"></property>
                <property name="suffix" value=".jsp"></property>
            </bean>
    
    </beans>

5.创建请求处理器:

@Controller
    public class HelloWorld {
        /**
         * 1.使用requestmapping注解来映射请求的url
         * 2.返回值会通过视图解析器解析为实际的物理视图,对于InternalResourceViewResolver视图解析器会做
         * 如下的解析:prefix+returnVal+后缀这样的方式得到实际的物理视图,然后做转发操作
         * */
        @RequestMapping("/nihao")
        public String hello(){
            System.out.println("hello~~");
            return "success";
        }
    }

6.在WEB-INF下创建一个success.jsp,文件名=请求处理器的返回值

7.在index.jsp下添加一个超链接:

<html>
    <body>
    <a href="nihao">nihao</a>
    </body>
    </html>

8.在success.jsp中添加如下代码:

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
        <title>Title</title>
    </head>
    <body>
        <h4>success!</h4>
    </body>
    </html>

项目地址:https://git.coding.net/littleWhiteJ/SpringMvc1.git

[Center]: /images/20220617/74fc260ae2014461a01966abcd223a82.png
[Center 1]: /images/20220617/6cbde9e474a8474d9c37ec659f282e3d.png