第一个springMVC小程序

快来打我* 2022-04-18 03:12 342阅读 0赞

## 1.开发工具介绍 ##

idea的安装破解：[https://www.cnblogs.com/jpfss/p/8872358.html][https_www.cnblogs.com_jpfss_p_8872358.html]

jdk和Tomcat的配置都在里面。

## 2.创建第一个小程序 ##

### 2.1创建一个web项目 ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNTM0MTE1_size_16_color_FFFFFF_t_70][]

2.2创建大纲

![20181107183204284.png][]

### 2.3在web/WEB-INF下创建lib文件夹 ###

### 2.4将lar包导入lib ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNTM0MTE1_size_16_color_FFFFFF_t_70 1][]

### 2.5使用jar包 ###

全选--->右键--->add libraries..--->ok

### 2.6第一个程序HelloWorld ###

package com.jie.controller;
    
    
    import org.springframework.web.servlet.ModelAndView;
    import org.springframework.web.servlet.mvc.Controller;
    
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    public class HelloWorld  implements Controller {
    
    
        @Override
        public ModelAndView handleRequest(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws Exception {
            String id=httpServletRequest.getParameter("id");
            System.out.println("id=====>"+id);
            //跳转页面到list.jsp
            ModelAndView mv=new ModelAndView("list");
            return mv;
        }
    }

## 3.配置文件 ##

### 3.1web.xml ###

<servlet>
            <servlet-name>springmvc</servlet-name>
            <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
            
            <init-param>
                <param-name>contextConfigLocation</param-name>
                <param-value>classpath:springmvc-servlet.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>

### 3.2springmvc-servet.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:mvc="http://www.springframework.org/schema/mvc"
           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
    		        http://www.springframework.org/schema/mvc
    		        http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    
        
    
        
        <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
            
            <property name="prefix" value="/"/>
            <property name="suffix" value=".jsp"/>
        </bean>
    
    
        <bean name="/helloworld" class="com.jie.controller.HelloWorld" />
    
    </beans>

## 4.小结 ##

> 若是运行失败，先检查jdk和Tomcat的配置是否正确，然后看看java类实现的接口
> 
>     import org.springframework.web.servlet.mvc.Controller;
> 
> 框架使用很轻松，配置很麻烦，具体操作看上述代码。

[https_www.cnblogs.com_jpfss_p_8872358.html]: https://www.cnblogs.com/jpfss/p/8872358.html
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNTM0MTE1_size_16_color_FFFFFF_t_70]: /images/20220418/bb0dc1e95b3944a3a4c018924c9065b6.png
[20181107183204284.png]: /images/20220418/65448560e8bb46aeae048fec11492874.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxNTM0MTE1_size_16_color_FFFFFF_t_70 1]: /images/20220418/109f8fc447464fb789786b0a8cdce152.png