1.配置spring的xml文件springmvc-servlet.xml（固定配置）
<?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"> <!--添加处理映射器--> <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/> <!--添加处理器适配器--> <bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/> <!--视图解析器:DispatcherServlet给他的ModelAndView 1.获取了ModelAndView中的数据 2.解析ModelAndView的视图名字 3.拼接视图名字，找到对应的视图 /WEB-INF/jsp/hello.jsp 4.将数据渲染到这个视图上 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="InternalResourceViewResolver"> <!--前缀--> <property name="prefix" value="/WEB-INF/jsp/"/> <!--后缀--> <property name="suffix" value=".jsp"/> </bean> <!--Handler--> <!--每一个servlet类都在此处配置--> <bean id="/hello" class="com.peng.controller.HelloController"/> </beans>
2.配置web.xml文件注册DispatcherServlet
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd" version="4.0"> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <!--与上一步文件名保持一致--> <param-value>classpath:springmvc-servlet.xml</param-value> </init-param> <!--启动级别-1--> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> </web-app>
3.写xxxController类实现Controller接口
public class HelloController implements Controller { @Override public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception { //ModelAndView 模型和视图 ModelAndView mv = new ModelAndView(); //封装对象，放在ModelAndView中。Model mv.addObject("msg","HelloSpringMVC!"); //封装要跳转的视图，放在ModelAndView中 mv.setViewName("hello"); //相当于 /WEB-INF/jsp/hello.jsp return mv; } }
4.创建jsp文件
创建位置与这里相关，不相关将回报错404
<!--前缀--> <property name="prefix" value="/WEB-INF/jsp/"/> <!--后缀--> <property name="suffix" value=".jsp"/>
hello.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Title</title> </head> <body> ${msg} </body> </html>
可能会出现的404错误.
1.点项目配置
2.点Artifacts
3.导入内部所有依赖
4.重启Tomcat.
