SpringMVC简单执行过程

最新推荐文章于 2024-03-19 18:06:12 发布

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最新推荐文章于 2024-03-19 18:06:12 发布

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文章标签： spring mvc

本文链接：https://blog.youkuaiyun.com/xyf1513/article/details/120394709

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首先我们需要注意的是。如果我们的web.xml版本是2.3以下版本，EL表达式是不会自动解析的，所以，我们需要将web.xml头部更换为下图：

<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">

然后我们将要准备我们的运行；

添加jar包：

<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-webmvc</artifactId>
  <version>5.3.9</version>
</dependency>
<dependency>
  <groupId>javax.servlet</groupId>
  <artifactId>javax.servlet-api</artifactId>
  <version>3.1.0</version>
  <scope>provided</scope>
</dependency>

然后我们需要配置SpringMVC的xml文件：

<?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 https://www.springframework.org/schema/context/spring-context.xsd">

<!--开启扫描-->
        <context:component-scan base-package="com.openlab.controller"></context:component-scan>

<!--将注解中的返回的字符串进行拼接-->

    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>

</beans>

配置web.xml:

<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">


  <display-name>Archetype Created Web Application</display-name>
  <servlet>
    <servlet-name>springMVC</servlet-name>
<!--以下为SpringMVC的核心类-->
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:springMVC.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>springMVC</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

</web-app>

配置进行跳转的两个类：

package com.openlab.controller;

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

import javax.xml.ws.RequestWrapper;

@Controller
@RequestMapping("/All")
public class HelloController {
    @RequestMapping("/hello")
    public String hello(){
        System.out.println("----------");
        return "hello";
    }
    @RequestMapping("/test")
    public String test(){
        System.out.println("----------");
        return "test";
    }
}

package com.openlab.controller;

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

@Controller
@RequestMapping("/dept")
public class Dept {
    @RequestMapping("/deptlist")
    public String Dept(){
        return "deptlist";
    }
}

对其进行xml文件的配置：

<%@ page import="java.util.Date" %><%--
  Created by IntelliJ IDEA.
  User: ASUS
  Date: 2021/9/18
  Time: 14:28
  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>
<%=new Date()%><br>
hello页面<br>

<a href="test">点击跳转到test页面</a>
<%=request.getContextPath()%>
${pageContext.request.contextPath}
<a href="${pageContext.request.contextPath}/dept/deptlist">点击跳转到dept页面</a>
</body>
</html>

<%--
  Created by IntelliJ IDEA.
  User: ASUS
  Date: 2021/9/20
  Time: 17:07
  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>
    部门类
<a href="${pageContext.request.contextPath}All/hello">点击查看hello</a>

</body>
</html>

配置完成，我们使用tomcate服务器运行时，发现可以互相跳转，我们就实现了对SpringMVC的简单跳转；