springMvc学习网址:http://c.biancheng.net/view/4391.html
一.新建web项目,目录结构如下
二.配置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">
<!-- 配置DispatcherServlet -->
<!-- The front controller of this Spring Web application, responsible for handling all application requests -->
<servlet>
<servlet-name>springDispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 配置DispatcherServlet的一个初始化参数,配置springMVC配置文件的位置和名称 -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc.xml</param-value>
</init-param>
<!-- 当前web应用被加载的时候被创建,而不是被请求的时候创建 -->
<load-on-startup>1</load-on-startup>
</servlet>
<!-- Map all requests to the DispatcherServlet for handling -->
<servlet-mapping>
<servlet-name>springDispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
三.配置springmvc.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: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-4.3.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd">
<!-- 配置自动扫描的包 -->
<context:component-scan base-package=" lxf.springmvc"></context:component-scan>
<!-- 配置视图解析器:如何把handler方法返回值解析为实际的物理视图 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
</beans>
四.新建HelloWorld控制器
package lxf.springmvc.handlers;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
/**
* 请求处理器
* @author lxf
*/
//@RequestMapping注解修饰类
@RequestMapping("/helloClass")
@Controller
public class HelloWorld {
/**
* 1.使用@RequestMapping注解来映射请求的url,修饰方法
* 2.返回值会通过视图解析器解析为实际的物理视图,对于InternalResourceViewResolver解析器,会做如下的解析:
* 通过 prefix + returanval + 后缀,这样的方式得到实际的物理视图,然后做转发操作
* /WEB-INF/views/success.jsp
* @return
*/
@RequestMapping("/helloMethod")
public String hello()
{
System.out.println("Hellow world!");
return "success";
}
}
以上 @RequestMapping
注解既可以 修饰类
,也可以修饰 方法
五.新建view,success.jsp
<h4>Success Page!</h4>
六.访问测试:
- 如果@RequestMapping不修饰类的时候访问如下:
http://localhost:8081/spring-mvc-helloworld/helloMethod
- 如果 @RequestMapping修饰类的时候访问如下:
http://localhost:8081/spring-mvc-helloworld/helloClass/helloMethod