idea使用maven快速搭建springMvc项目

 

1.导入springMvc的基本jar包

    <!--springMvc依赖的jar包-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>5.1.3.RELEASE</version>
    </dependency>

成功导入后在扩展包中有如下jar包:

2.配置web.xml文件

  <servlet>
    <servlet-name>dispatcherServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:spring.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>dispatcherServlet</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

　　在resources文件夹下创建文件spring.xml

并配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
         http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
    <!--启动springMVC的注解功能，自动注册HandlerMapping HandlerAdapter ExceptionResolver实例-->
    <mvc:annotation-driven />
    <mvc:default-servlet-handler />
    <!--配置自动扫包-->
    <context:component-scan base-package="com.mmfm"></context:component-scan>
    <!--配置视图解析器 如何把handler 方法返回的值解析为物理视图-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/"></property>
        <property name="suffix" value=".do"></property>
    </bean>
</beans>

3.在WEB-INF中创建views文件夹并创建login.do文件

4.控制器，并将结果返回到自定义视图中

@Controller
public class loginController {
    @GetMapping("/login")
    public String hi(){
        return "login";
    }
}

5.在浏览器中请求http://localhost/initmvc_war/login，dispatcherServlet拦截该请求并调用控制器中的login的hi方法，返回视图login，（需要配置 <mvc:annotation-driven /> <mvc:default-servlet-handler />），否则将看到查找不到映射  /WEB-INF/login.do