Springmvc:(二)第一个程序

一、创建流程

  1. 创建maven项目,添加web支持

  2. 导入spring-webmvc依赖

  3. 解决maven静态资源过滤的问题

        <build>
            <resources>
                <resource>
                    <directory>src/main/java</directory>
                    <includes>
                        <include>**/*.properties</include>
                        <include>**/*.xml</include>
                    </includes>
                    <filtering>false</filtering>
                </resource>
                <resource>
                    <directory>src/main/resources</directory>
                    <includes>
                        <include>**/*.properties</include>
                        <include>**/*.xml</include>
                    </includes>
                    <filtering>false</filtering>
                </resource>
            </resources>
        </build>
    
  4. File---Project Structure---Artifacts-----WEB-INF----右键新建lib文件夹----单击加号,添加jar包

  5. 编写WEB.XML

    <?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>
            <!--关联springMVC配置-->
            <init-param>
                <param-name>contextConfigLocation</param-name>
                <param-value>classpath:springmvc.xml</param-value>
            </init-param>
            <!--执行优先级顺序-->
            <load-on-startup>1</load-on-startup>
        </servlet>
        <servlet-mapping>
            <servlet-name>springmvc</servlet-name>
            <url-pattern>/</url-pattern>
        </servlet-mapping>
    </web-app>
    
  6. 创建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 https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd">
        <!--自动扫描包-->
        <context:component-scan base-package="com.ruanyuan.Controller"/>
        <!-- 让Spring MVC不处理静态资源 js、css、img -->
        <mvc:default-servlet-handler/>
        <!--注册默认梳理请求,返回值,参数的类-->
        <mvc:annotation-driven/>
        <!--视图解析器:DispatcherServlet给他的ModelAndView-->
        <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>
    </beans>
    
  7. 创建HelloController

    package com.ruanyuan.Controller;
    
    import org.springframework.stereotype.Controller;
    import org.springframework.ui.Model;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.servlet.ModelAndView;
    
    import java.lang.annotation.Annotation;
    
    @Controller
    @RequestMapping("/HelloController")
    public class HelloController {
    
        //真实访问地址 : 项目名/HelloController/hello
        @RequestMapping("/hello")
        public String sayHello(Model model) {
            //向模型中添加属性msg与值,可以在JSP页面中取出并渲染
            model.addAttribute("msg", "hello,SpringMVC");
            //web-inf/jsp/hello.jsp
            return "hello";
        }
    }
    
  8. 创建hello.jsp

    <%--
      Created by IntelliJ IDEA.
      User: zbp
      Date: 2020/3/3
      Time: 15:35
      To change this template use File | Settings | File Templates.
    --%>
    <%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
        <title>Title</title>
    </head>
    <body>
    	${msg}
    </body>
    </html>
    
    
  9. 执行结果

    image-20200303163733920

二、拓展

  1. 解决中文乱码问题

    <!-- 配置过滤器,解决中文乱码的问题 -->
    <filter>
    	<filter-name>characterEncodingFilter</filter-name>
    	<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-
    class>
    <!-- 指定字符集 -->
    <init-param>
    	<param-name>encoding</param-name>
    	<param-value>UTF-8</param-value>
    </init-param>
    </filter>
    	<filter-mapping>
    	<filter-name>characterEncodingFilter</filter-name>
    	<url-pattern>/*</url-pattern>
    </filter-mapping>
    
posted @ 2020-03-13 12:16  梦想与爱  阅读(168)  评论(0编辑  收藏  举报