springMVC第一课--配置文件
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刚学springMVC,记录下学习过程,供以后查阅。
1,新建一个web工程。(其他按常规来)
如下:添加applicationContext.xml,webmvc-servlet.xml,和lib下的jar包。
2,修改web.xml:
1 <?xml version="1.0" encoding="UTF-8"?> 2 <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0"> 3 <display-name>springmvc</display-name> 4 <context-param> 5 <param-name>contextConfigLocation</param-name> 6 <param-value>classpath:/spring/applicationContext.xml</param-value> 7 </context-param> 8 <listener> 9 <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> 10 </listener> 11 <servlet> 12 <servlet-name>webmvc</servlet-name> 13 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 14 <init-param> 15 <param-name>contextConfigLocation</param-name> 16 <param-value>classpath:spring/webmvc-servlet.xml</param-value> 17 </init-param> 18 </servlet> 19 <servlet-mapping> 20 <servlet-name>webmvc</servlet-name> 21 <url-pattern>/</url-pattern> 22 </servlet-mapping> 23 <welcome-file-list> 24 <welcome-file>index.jsp</welcome-file> 25 </welcome-file-list> 26 </web-app>
2,修改applicationContext.xml如下:
1 <?xml version="1.0" encoding="UTF-8"?> 2 3 <beans xmlns="http://www.springframework.org/schema/beans" 4 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop" 5 xmlns:context="http://www.springframework.org/schema/context" 6 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd 7 http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd 8 http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> 9 <!-- 排除springMVC Controller重复扫描 --> 10 <context:component-scan base-package="controller"> 11 <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/> 12 </context:component-scan> 13 14 </beans>
3,修改webmvc-servlet.xml如下:
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" 4 xmlns:context="http://www.springframework.org/schema/context" 5 xmlns:mvc="http://www.springframework.org/schema/mvc" 6 xsi:schemaLocation="http://www.springframework.org/schema/beans 7 http://www.springframework.org/schema/beans/spring-beans.xsd 8 http://www.springframework.org/schema/context 9 http://www.springframework.org/schema/context/spring-context.xsd 10 http://www.springframework.org/schema/mvc 11 http://www.springframework.org/schema/mvc/spring-mvc.xsd"> 12 <!-- 自动扫描该包,使SpringMVC认为包下用了@controller注解的类是控制器 --> 13 <!-- 扫描业务组件,让spring不扫描带有@Service注解的类(留在root-context.xml中扫描@Service注解的类),防止事务失效 --> 14 <mvc:annotation-driven/> 15 <context:component-scan base-package="controller"> 16 <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Service"/> 17 </context:component-scan> 18 <!-- 启动SpringMVC的注解功能,完成请求和注解POJO的映射 --> 19 <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"/> 20 <!-- 定义跳转的文件的前后缀 ,视图模式配置 --> 21 <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 22 <property name="prefix" value="/WEB-INF/jsp/" /> 23 <property name="suffix" value=".jsp" /> 24 </bean> 25 26 </beans>
4,在controller包下新建一个controller类。
核心代码如下:
1 @Controller 2 public class MainController { 3 @RequestMapping("index") 4 public Object index(){ 5 System.out.println("test"); 6 return "first"; 7 }
5,部署项目到tomcat,并在浏览器输入:
http://localhost:8080/springmvc/index
6,至此,springMVC全部配置完成。
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