SpringMVC框架初步

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需要节点：

<dependencies>  <dependency>    <groupId>junit</groupId>    <artifactId>junit</artifactId>    <version>3.8.1</version>    <scope>test</scope>  </dependency>  <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->  <dependency>    <groupId>org.springframework</groupId>    <artifactId>spring-webmvc</artifactId>    <version>4.3.7.RELEASE</version>  </dependency>  <!--beans  自动将依赖的core引入了-->  <dependency>    <groupId>org.springframework</groupId>    <artifactId>spring-beans</artifactId>    <version>4.2.3.RELEASE</version>  </dependency>  <!--context 依赖N个-->  <dependency>    <groupId>org.springframework</groupId>    <artifactId>spring-context</artifactId>    <version>4.2.0.RELEASE</version>  </dependency>  <dependency>    <groupId>junit</groupId>    <artifactId>junit</artifactId>    <version>4.12</version>  </dependency>  <!--织入的依赖-->  <dependency>    <groupId>org.aspectj</groupId>    <artifactId>aspectjweaver</artifactId>    <version>1.8.7</version>  </dependency>  <!-- https://mvnrepository.com/artifact/org.springframework/spring-web -->  <dependency>    <groupId>org.springframework</groupId>    <artifactId>spring-web</artifactId>    <version>4.3.7.RELEASE</version>  </dependency>  <!--Servlet API-->  <dependency>    <groupId>javaee</groupId>    <artifactId>javaee-api</artifactId>    <version>5</version>  </dependency>  <dependency>    <groupId>org.springframework</groupId>    <artifactId>spring-webmvc</artifactId>    <version>4.3.10.RELEASE</version>  </dependency></dependencies><build>  <resources>    <resource>      <directory>src/main/java</directory>      <includes>        <include>**/*.xml</include>      </includes>    </resource>  </resources></build>

web.xml配置

<web-app>    <display-name>Archetype Created Web Application</display-name>    <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>        <load-on-startup>1</load-on-startup>    </servlet>    <servlet-mapping>        <servlet-name>springmvc</servlet-name>        <url-pattern>/</url-pattern>    </servlet-mapping>    <!--对静态资源访问方式二-->    <!--<servlet-mapping>        <servlet-name>default</servlet-name>        <url-pattern>*.jpg</url-pattern>    </servlet-mapping>--></web-app>

FirstController 类

public class FirstController implements Controller {    public ModelAndView handleRequest(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws Exception {        ModelAndView mv=new ModelAndView();        mv.addObject("uname","小仙女");        mv.setViewName("/index");        return mv;    }}springMVC.xml<bean id="test01" class="cn.ljl.controller.FirstController"></bean><!--视图解析器--><bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">    <property name="prefix" value="/"/>    <property name="suffix" value=".jsp"/></bean><!--对静态资源访问方式一--><!-- <mvc:default-servlet-handler/>--><!--对静态资源访问方式三--><mvc:resources location="/img/" mapping="/img/**"></mvc:resources><bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"></bean><!----><bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">    <!--<property name="mappings">        <props>            <prop key="/hello">test01</prop>            <prop key="/ljl">test01</prop>        </props>    </property>-->    <property name="urlMap">        <map>            <entry key="/hello" value="test01"></entry>            <entry key="/haha" value="test01"></entry>        </map>    </property></bean>

index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %><html><body><h2>我还是很喜欢你 像风走了八千里 不问归期</h2><h3>${uname}</h3><img src="img/01.jpg"/></body></html>

在换另一个配置时，在web.xml中更改

<init-param>            <param-name>contextConfigLocation</param-name>            <param-value>classpath:springMVC02hander.xml</param-value>        </init-param>

在类中更改：

public class SecondController extends AbstractController{    protected ModelAndView handleRequestInternal(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws Exception {        ModelAndView mv=new ModelAndView();        mv.addObject("uname","你是不是傻");        mv.setViewName("/index");        return mv;    }}

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