StringMVC入门案例

1.首先要引入jar包

  <!--引入beans节点-->
     <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-beans</artifactId>
       <version>4.2..RELEASE</version>
     </dependency>

     <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-context</artifactId>
       <version>4.2..RELEASE</version>
     </dependency>

     <dependency>
       <groupId> org.aspectj</groupId >
       <artifactId> aspectjweaver</artifactId >
       <version> 1.8.</version >
     </dependency>

     <!--SpringWebMVC-->
     <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
     <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-webmvc</artifactId>
       <version>3.1..RELEASE</version>
     </dependency>

     <!--ServletAPI-->
     <dependency>
       <groupId>javaee</groupId>
       <artifactId>javaee-api</artifactId>
       <version></version>
     </dependency>

     <dependency>
       <groupId>javax.servlet</groupId>
       <artifactId>jstl</artifactId>
       <version>1.2</version>
       <scope>runtime</scope>
     </dependency>

     <!--SpringWeb-->
     <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-web</artifactId>
       <version>4.1..RELEASE</version>
     </dependency>

     <!--alibaba的 fastjson-->
     <dependency>
       <groupId>com.alibaba</groupId>
       <artifactId>fastjson</artifactId>
       <version>1.2.</version>
     </dependency>

     <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core -->
     <dependency>
       <groupId>com.fasterxml.jackson.core</groupId>
       <artifactId>jackson-core</artifactId>
       <version>2.8.</version>
     </dependency>

     <dependency>
       <groupId>com.fasterxml.jackson.core</groupId>
       <artifactId>jackson-databind</artifactId>
       <version>2.5.</version>
     </dependency>

     <!--数据验证-->
     <dependency>
       <groupId>org.hibernate</groupId>
       <artifactId>hibernate-validator</artifactId>
       <version>4.0..GA</version>
     </dependency>

     <!--jboss logging-->
     <dependency>
       <groupId>org.jboss.logging</groupId>
       <artifactId>jboss-logging</artifactId>
       <version>3.3..Final</version>
     </dependency>

     <!--validation api-->
     <dependency>
       <groupId>javax.validation</groupId>
       <artifactId>validation-api</artifactId>
       <version>1.0..GA</version>
     </dependency>

     <!--slf4j api-->
     <dependency>
       <groupId>org.slf4j</groupId>
       <artifactId>slf4j-api</artifactId>
       <version>1.7.</version>
     </dependency>

     <!--文件上传的jar包-->
     <dependency>
       <groupId>commons-fileupload</groupId>
       <artifactId>commons-fileupload</artifactId>
       <version>1.3.</version>
     </dependency>

     <dependency>
       <groupId>commons-io</groupId>
       <artifactId>commons-io</artifactId>
       <version>1.4</version>
     </dependency>
     <dependency>
       <groupId>org.apache.poi</groupId>
       <artifactId>poi</artifactId>
       <version>3.17-beta1</version>
     </dependency>

   </dependencies>

2.填写web.xml

 <web-app>
   <display-name>Archetype Created Web Application</display-name>
   <!--配置前端控制器-->
   <servlet>
     <servlet-name>stringmvc</servlet-name>
     <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
     <!--初始化参数-->
  <init-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:springmvc.xml</param-value>
  </init-param>

     <!--只要Tomcat一启动，就将servlet对象创建好放入内存了-->
     <load-on-startup></load-on-startup>

   </servlet>

   <servlet-mapping>
     <servlet-name>stringmvc</servlet-name>
     <url-pattern>/</url-pattern>
   </servlet-mapping>
 </web-app>

3.写springmvc.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <beans xmlns="http://www.springframework.org/schema/beans"
        xmlns:aop="http://www.springframework.org/schema/aop"
        xmlns:context="http://www.springframework.org/schema/context"
        xmlns:tx="http://www.springframework.org/schema/tx"
        xmlns:mvc="http://www.springframework.org/schema/mvc"
        xmlns:p="http://www.springframework.org/schema/p"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="
         http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
         http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd
         http://www.springframework.org/schema/context  http://www.springframework.org/schema/context/spring-context.xsd
         http://www.springframework.org/schema/tx  http://www.springframework.org/schema/tx/spring-tx.xsd
         http://www.springframework.org/schema/mvc   http://www.springframework.org/schema/mvc/spring-mvc.xsd
 ">
     <!--注册处理器-->
     <bean id="/hello.do" class="cn.happy.controller.FirstController"></bean>
 </beans>

4.创建类编写代码

 /*控制器
 * ModelAndView
 * handleRequest
 * */
 public class FirstController implements Controller{
     public ModelAndView handleRequest(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws Exception {
         ModelAndView mv=new ModelAndView();
         mv.setViewName("/WEB-INF/index.jsp");
         return mv;
     }
 }

5.在WEB-INF下写一个jsp

 <%@ page contentType="text/html;charset=UTF-8" language="java" %>
 <html>
 <head>
     <title>Title</title>
 </head>
 <body>
 <h2>StringMVC  One</h2>
 </body>
 </html>

最后运行结果为：