------------吾亦无他,唯手熟尔，谦卑若愚，好学若饥-------------
咱们这个案例做什么？
就是用处理器代替Servlet处理请求
开发步骤：
1.引入jar包
<!--单元测试的依赖 ctrl+shif+/-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.2.0.RELEASE</version>
</dependency>
<!--引入beans节点-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>4.2.0.RELEASE</version>
</dependency>
<dependency>
<groupId> org.aspectj</groupId >
<artifactId> aspectjweaver</artifactId >
<version> 1.8.7</version>
</dependency>
<!--SpringWebMVC-->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.2.0.RELEASE</version>
</dependency>
<!--ServletAPI-->
<dependency>
<groupId>javaee</groupId>
<artifactId>javaee-api</artifactId>
<version>5</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>4.2.0.RELEASE</version>
</dependency>
2.具体的开发流程
此处标红的表示需要配置的，未标红的表示本身就有默认值，可以无需配置springmvc也能执行
3.准备一个index.jsp页面
<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %> <html> <body> <h2>Hello SpringMVC!今天揭开你的新面纱</h2> </body> </html>
4.创建一个类FirstController
package cn.dawn.day01; import org.springframework.web.servlet.ModelAndView; import org.springframework.web.servlet.mvc.Controller; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; /** * Created by Dawn on 2018/3/19. */ //处理器 public class FirstController implements Controller { /** * handleRequest 处理请求 * @param httpServletRequest * @param httpServletResponse * @return * @throws Exception */ public ModelAndView handleRequest(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws Exception { ModelAndView me=new ModelAndView(); me.setViewName("index.jsp"); return me; } }
5.配置大配置文件ApplicationContext-day01.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" 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"> <!--配置bean处理器--> <bean id="/first" class="cn.dawn.day01.FirstController"></bean> </beans>
6.web.xml配置前端控制器
<!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> <!--中央调度器--> <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:ApplicationContext-day01.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> </web-app>
配置完成，打开tomcat服务器中，在网页url中访问http://localhost:8080/项目名/first（根据你自己的配置来）
