Spring MVC（学习笔记一）--Hello World

开发工具：IntelliJ IDEA 2016.3

软件环境：tomcat 8.0 , jdk1.8

项目管理：maven

文件结构：

操作步骤：

1，引入jars(pom.xml)

我试了一下，就简单的在index页面输出”Hello World“只需要 spring-webmvc这一个jar，里面包括了这些jar：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.zx</groupId>
  <artifactId>spring-mvc</artifactId>
  <packaging>war</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>spring-mvc Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <properties>
    <spring.version>5.0.2.RELEASE</spring.version>
  </properties>
  <dependencies>
    <!--包含Spring MVC 框架相关的所有类:包括框架的Servlets，Web MVC框架，控制器和视图支持-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${spring.version}</version>
    </dependency>
  </dependencies>
  <build>
    <finalName>spring-mvc</finalName>
  </build>
</project>

2，编写spring配置文件(spring-mvx.xml) --context注意引入命名空间

<?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"
       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.xsd">
    <!--配置自动扫描包-->
    <context:component-scan base-package="com.zx.controller"/>

    <!--配置视图解析器-->
    <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!--前缀-->
        <property name="prefix" value="/"/>
        <!--后缀-->
        <property name="suffix" value=".jsp"/>
    </bean>
</beans>

3，编写web.xml文件

<?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_3_1.xsd"
         version="3.1">

  <servlet>
    <servlet-name>dispatcher</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <!-- 加载spirng配置文件 -->
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:spring-mvc.xml</param-value>
    </init-param>
  </servlet>

  <!-- 拦截所有请求 -->
  <servlet-mapping>
    <servlet-name>dispatcher</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
</web-app>

4，编写HelloController类

package com.zx.controller;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
@RequestMapping(value = "/hello")
public class HelloController {
    @RequestMapping(value = "hello")
    public String hello(Model model){
        model.addAttribute("hello","Hello World");
        return "index";
    }
}

5，index.jsp页面

<html>
    <body>
        <h2>
            ${hello}
        </h2>
    </body>
</html>

好了，将项目部署到tomcat中。浏览器路径输入：http://localhost:8080/hello/hello，出现界面：

解决引入静态资源问题

Spring MVC（学习笔记一）--Hello World

操作步骤：

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