springMVC入门,环境搭建

xiaoxiao2021-02-28  127

1,所需的包:

2,配置文件: WEB-INF目录下的的web.xml和springmvc-servlet.xml web.xml:

<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" 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"> <display-name>springmvctest</display-name> <!-- 统一编码 --> <filter> <filter-name>charsetEncoding</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> <init-param> <param-name>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>charsetEncoding</filter-name> <url-pattern>/</url-pattern> </filter-mapping> <!-- 前端控制器 --> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- 加载/WEB-INF/[servlet-name]-servlet.xml --> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!-- 404页面配置 --> <!-- <error-page> <error-code>404</error-code>s <location>error.jsp</location> </error-page> --> </web-app>

springmvc-servlet.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" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:task="http://www.springframework.org/schema/task" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.2.xsd"> <!-- 扫描路径 --> <context:component-scan base-package="wap.controller" > <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> <!-- 视图层配置 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/pages/"/> <property name="suffix" value=".jsp"/> </bean> <!--定义异常处理页面,只要产生Exception类异常或者其子类异常,就跳到exception.jsp页面--> <bean id="exceptionResolver" class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver"> <property name="exceptionMappings"> <props> <!-- 定义异常类型和对应的跳转页面,可以写多个 --> <prop key="java.lang.Exception">exception</prop> </props> </property> </bean> </beans>

3,项目结构,项目名为SpringMVC2:

4,页面位于WEB-INF/pages/路径下,所需要的页面为index.jsp,页面内容自定义,这里就不贴出来了。

5,控制器Test.java

package wap.controller; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; @Controller @RequestMapping(value="/wap") public class Test { @RequestMapping(value="/test.do") public String test(String user){ //请求路径为http://localhost/springMVC2/wap/test.do?user=1 System.out.println(user); return "index";//默认返回的是WEB-INF里面的pages目录里面的页面 } }

6,完成以上步骤后,启动将项目部署到tomcat并启动tomcat,访问http://localhost:端口/springMVC2/wap/test.do?user=1即可看到index.jsp页面内容,访问路径形式为:域名:端口/项目名/注解配置的访问路径。其中@Controller注解用于声明该类是一个控制器,springMVC项目的访问路径都是访问控制器里面的方法;@RequestMapping注解用于控制请求路径,在这里,类的@RequestMapping注解值为“/wap”,则访问“http://localhost:端口/springMVC2/wap”就会请求到这个类,再加上类里面的方法的@RequestMapping的注解值,就组成一个完整的请求路径,例如这里test()方法的请求路径就是“http://localhost:端口/springMVC2/wap/test.do”。

7,完整项目下载地址项目下载地址,需要使用git工具下载

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