SpringMVC 入门跳转小案例

多凡

发布于 2019-11-01 09:37:07

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发布于 2019-11-01 09:37:07

文章被收录于专栏：sringbootsringboot

本文链接：https://blog.csdn.net/weixin_44580977/article/details/97621644

我使用的编译器时idea创建maven项目使用webapp骨架，开发顺序建议按照我的标题号以此配置，从2开始也代表了前后端交互的访问顺序

1.导入SpringMVC相关包

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
    
    <!-- 锁定spring 版本 -->
    <spring.version>5.0.2.RELEASE</spring.version>
  </properties>

	<dependencies>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>servlet-api</artifactId>
      <version>2.5</version>
      <scope>provided</scope>
    </dependency>

    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.0</version>
      <scope>provided</scope>
    </dependency>

  </dependencies>

2. index.jsp 主页

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
    <h3>入门成功</h3>
</body>
</html>

3.springmvc.xml配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       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
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd">

    <!--开启注解扫描-->
    <context:component-scan base-package="cn.itcast"/>

    <!-- 视图解析器对象-->
    <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!--解析的目录名-->
        <property name="prefix" value="/WEB-INF/pages/"/>
        <!--解析文件拓展名-->
        <property name="suffix" value=".jsp"/>
    </bean>


    <!-- 开启SpringMVC框架注解的支持 -->
    <mvc:annotation-driven></mvc:annotation-driven>

</beans>

4.web.xml配置

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <display-name>Archetype Created Web Application</display-name>

  <!-- 配置前端控制器，控制访问，然后给controller分配-->
  <servlet>
    <servlet-name>dispatcherServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

    <!--初始化 创建类 -->
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:springmvc.xml</param-value>
    </init-param>

    <!-- 配置servlet的对象的创建时间点:tomcat启动时创建
        取值只能是非0正整数,表示启创建顺序 -->
    <load-on-startup>1</load-on-startup>
  </servlet>

  <servlet-mapping>
    <servlet-name>dispatcherServlet</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

</web-app>

5.HelloController 表现层控制器

@Controller
public class HelloController {

    @RequestMapping(path = "/hello")
    public String sayHello(){
        System.out.println("Hello StringMVC");
        //返回 success.jsp展现给用户
        return "success";
    }
}

6.success.jsp跳转页面

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
    <h3>入门成功</h3>
</body>
</html>