(MAVEN) Spring MVC 入门之页面跳转

心已赠人 2022-07-11 07:47 248阅读 0赞

**目录**

1、eclipse构建maven结构-注意自定义maven项目名称-这里叫fileup

2、配置pom.xml-满足SpringMVC-json映射-文件传

3、css和js静态文件夹目录创建

4、页面文件创建-jsp

5、编写Controller.java-HomeController.java

6、创建xml配置文件-主文件包含子文件

6.1、applicationContext.xml没有具体功能，仅包含子配置文件

6.2、applicationContext-mvc.xml -Spring MVC的基础配置

7、在web.xml 中配置 Spring MVC 的 DispatcherServlet以及字符过滤器

8、setting.xml 配置jetty插件

9、启动访问

10、资源下载

--------------------

### 1、eclipse构建maven结构-注意自定义maven项目名称-这里叫fileup ###

参考文章 [http://blog.csdn.net/bestcxx/article/details/54589039][http_blog.csdn.net_bestcxx_article_details_54589039]

### 2、配置pom.xml-满足SpringMVC-json映射-文件传 ###

<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/xsd/maven-4.0.0.xsd">
      <modelVersion>4.0.0</modelVersion>
      <groupId>com.bestcxx.stu</groupId>
      <artifactId>fileup</artifactId>
      <version>0.0.1-SNAPSHOT</version>
      <packaging>war</packaging>
      <name>fileup</name>
      <description>文件上传</description>
       <properties>    
               
           <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>    
               
               
           <springframework.version>4.3.0.RELEASE</springframework.version>    
             
           <jackson.version>2.5.4</jackson.version>  
       </properties>  
       
       
      <build>
      	
      	<finalName>${project.name}</finalName>
      	
      	<plugins>
      		 
      		   
             <plugin>  
                 <groupId>org.apache.maven.plugins</groupId>  
                 <artifactId>maven-compiler-plugin</artifactId>  
                 <version>2.3.2</version>  
                 <configuration>  
                     <source>1.7</source>  
                     <target>1.7</target>  
                     <uriEncoding>${project.build.sourceEncoding}</uriEncoding>
                 </configuration>  
              </plugin>
              
                
              <plugin>  
                  <groupId>org.mortbay.jetty</groupId>  
                  <artifactId>maven-jetty-plugin</artifactId>  
                  <version>6.1.26</version>  
                  <configuration>  
                        
                      <webApp>  
                          <contextPath>${project.build.outputDirectory}</contextPath>  
                      </webApp>  
                        
                        
                        
                      <scanIntervalSeconds>0</scanIntervalSeconds>  
                        
                      <connectors>  
                          <connector implementation="org.mortbay.jetty.nio.SelectChannelConnector">  
                              <port>8085</port>  
                          </connector>  
                      </connectors>  
                  </configuration>  
               </plugin>  
     
      	</plugins>
      </build>
      
      <dependencies>
      	   
         <dependency>  
             <groupId>junit</groupId>  
             <artifactId>junit</artifactId>  
             <version>4.12</version>  
             <scope>test</scope>  
         </dependency>
         
            
              
            <dependency>  
                <groupId>org.springframework</groupId>  
                <artifactId>spring-webmvc</artifactId>  
                <version>${springframework.version}</version>  
            </dependency>  
              
            <dependency>  
                <groupId>org.springframework</groupId>  
                <artifactId>spring-core</artifactId>  
                <version>${springframework.version}</version>  
            </dependency>  
      
            <dependency>  
                <groupId>org.springframework</groupId>  
                <artifactId>spring-context</artifactId>  
                <version>${springframework.version}</version>  
            </dependency>  
      
            <dependency>  
                <groupId>org.springframework</groupId>  
                <artifactId>spring-beans</artifactId>  
                <version>${springframework.version}</version>  
            </dependency>  
      
            <dependency>  
                <groupId>org.springframework</groupId>  
                <artifactId>spring-tx</artifactId>  
                <version>${springframework.version}</version>  
            </dependency>  
      
      
            <dependency>  
                <groupId>org.springframework</groupId>  
                <artifactId>spring-orm</artifactId>  
                <version>${springframework.version}</version>  
            </dependency>  
      
            <dependency>  
                <groupId>org.springframework</groupId>  
                <artifactId>spring-aop</artifactId>  
                <version>${springframework.version}</version>  
            </dependency>  
      
            <dependency>  
                <groupId>org.springframework</groupId>  
                <artifactId>spring-test</artifactId>  
                <version>${springframework.version}</version>
                <scope>test</scope>
            </dependency>  
      
            <dependency>  
                <groupId>org.springframework</groupId>  
                <artifactId>spring-web</artifactId>  
                <version>4.3.0.RELEASE</version>  
            </dependency>
            
               
            <dependency>  
                <groupId>javax.servlet</groupId>  
                <artifactId>javax.servlet-api</artifactId>  
                <version>3.0.1</version>  
                  
                 
            </dependency>  
              
              
                <dependency>    
                <groupId>javax.servlet</groupId>    
                <artifactId>jstl</artifactId>    
                <version>1.2</version>    
                <scope>runtime</scope>    
            </dependency>
            
            
            <dependency>  
    	        <groupId>commons-fileupload</groupId>  
    	        <artifactId>commons-fileupload</artifactId>  
    	        <version>1.3.1</version>  
    	    </dependency>
    	    
    	    
    	    
            <dependency>
    	      <groupId>com.fasterxml.jackson.core</groupId>
    	      <artifactId>jackson-core</artifactId>
    	      <version>${jackson.version}</version>
        	</dependency>
    	    <dependency>
    	      <groupId>com.fasterxml.jackson.core</groupId>
    	      <artifactId>jackson-databind</artifactId>
    	      <version>${jackson.version}</version>
    	    </dependency>
      </dependencies>
      
      
    </project>

### 3、css和js静态文件夹目录创建 ###

webapp/WEB-INF/css 下放.css 样式文件

webapp/WEB-INF/js 下放 .js 样式文件

![20170917103544234][]

### 4、页面文件创建-jsp ###

webapp/WEB-INF/views 下放jsp文件

这里只有一个home.jsp，作为待会的测试访问页

![20170917104305107][]

home.jsp的内容没有什么特殊的

<%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <%@ taglib  uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
    <%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
    <%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn" %>
    <%
    String path = request.getContextPath();
    String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
    %>
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>首页</title>
    </head>
    <body>
    	<h1>Hello World</h1>
    	${i1}<br/>
        ${i2}
    </body>
    </html>

### 5、编写Controller.java-HomeController.java ###

package包的命名规则：组织名.项目名.功能模块名\[.功能子模块名\]

该类，Get方法访问路径 home或者/将被引导到home.jsp页面，当然这个需要后续的配置

package com.bestcxx.stu.fileup.controller;
    
    import javax.servlet.http.HttpServletRequest;
    
    import org.springframework.beans.factory.config.ConfigurableBeanFactory;
    import org.springframework.context.annotation.Scope;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.GetMapping;
    
    @Controller
    //默认就是单例的,每次访问 i 值都会累加
    @Scope(ConfigurableBeanFactory.SCOPE_SINGLETON)
    public class HomeController {
    	/**定义一个常量*/
    	private int i=0;
    	
    	@GetMapping(value={"/home","/"})
    	public String homePage(HttpServletRequest request){
    		request.setAttribute("i1",i);
    		i++;
    		request.setAttribute("i2",i);
    		return "home";
    	}
    
    }

### 6、创建xml配置文件-主文件包含子文件 ###

src/main/resources

applicationContext.xml为子文件，spring文件夹下的文件为子文件

使用这种结构的好处是结构清晰，便于功能管理

一般我们使用 ContextLoaderListener 加载 applicationContext.xml 文件,该文件包含其他除 SpringMVC 相关配置到其他配置文件(本文就是 applicationContext-bean.xml,你可以添加数据库配置、事务配置、消息队列配置文件等)

使用 DispatcherServlet 加载 SpringMVC 相关到配置文件(本文就是 applicationContext-mvc.xml)和Controller 相关到Bean

![20170917100114485][]

### 6.1、applicationContext.xml没有具体功能，仅包含子配置文件 ###

后期新增其他配置文件时往里面添加即可

### 6.2、applicationContext-mvc.xml -Spring MVC的基础配置 ###

该文件包含 SpringMVC 相关的 Controller、视图解析器、静态资源配置、拦截器等

<?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:tx="http://www.springframework.org/schema/tx"  
        xmlns:aop="http://www.springframework.org/schema/aop"  
        xmlns:util="http://www.springframework.org/schema/util"  
        xmlns:orm="http://www.springframework.org/schema/orm"   
        xmlns:mvc="http://www.springframework.org/schema/mvc"  
        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd  
                            http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd  
                            http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd  
                            http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd  
                            http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.3.xsd  
                            http://www.springframework.org/schema/orm http://www.springframework.org/schema/orm/spring-orm-4.3.xsd  
                            http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd  
        ">
       
          
        <mvc:annotation-driven/>
        
          
        <mvc:view-controller path="/" view-name="forward:home"/>
        
        
    	<mvc:resources location="/WEB-INF/css/" mapping="/css/**" />
    	<mvc:resources location="/WEB-INF/js/" mapping="/js/**" />
    	
        
        <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">  
            <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>  
            <property name="contentType" value="text/html"/>        
            <property name="prefix" value="/WEB-INF/views/"/>  
            <property name="suffix" value=".jsp"/>  
        </bean>
        
        
        <context:component-scan base-package="com.bestcxx.stu.fileup.controller"/>  
       
    </beans>

6.3、applicationContext-bean.xml-Spring MVC的controller\\service等bean注册

### 7、在web.xml 中配置 Spring MVC 的 DispatcherServlet以及字符过滤器 ###

<?xml version="1.0" encoding="UTF-8"?>
    <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
    
    
    <context-param>
    	<param-name>contextConfigLocation</param-name>
    	<param-value>classpath:applicationContext.xml</param-value>
    </context-param>
      	<listener>
    	<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    
    
      <listener>
        <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
      </listener>
    
    
    <servlet>
    	<servlet-name>fileupservlet</servlet-name>
    	<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    	
    	<init-param>
    		<param-name>contextConfigLocation</param-name>
    		<param-value>classpath:spring/applicationContext-mvc.xml</param-value>
    	</init-param>
    
    	<load-on-startup>1</load-on-startup>
    	
     	<async-supported>true</async-supported>
    </servlet>
    
    <servlet-mapping>
    	<servlet-name>fileupservlet</servlet-name>
    	<url-pattern>/</url-pattern>
    </servlet-mapping>
    
    
    
    <filter>
    	<filter-name>encodingFilter</filter-name>
    	<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    	<init-param>
    		<param-name>encoding</param-name>
    		<param-value>UTF-8</param-value>
    	</init-param>
    	<init-param>
    		<param-name>forceEncoding</param-name>
    		<param-value>true</param-value>
    	</init-param>
    </filter>
    <filter-mapping>
    	<filter-name>encodingFilter</filter-name>
    	<url-pattern>/*</url-pattern>
    </filter-mapping>
    
    
    </web-app>

### 8、setting.xml 配置jetty插件 ###

http://blog.csdn.net/bestcxx/article/details/72626978-4、maven中配置jetty 插件

### 9、启动访问 ###

[http://localhost:8085/fileup/][http_localhost_8085_fileup]

![20170917105334542][]

### 10、资源下载 ###

本文的SpringMVC Maven 项目提供了一个小Demo

[https://download.csdn.net/download/bestcxx/11454361][https_download.csdn.net_download_bestcxx_11454361]

[http_blog.csdn.net_bestcxx_article_details_54589039]: http://blog.csdn.net/bestcxx/article/details/54589039
[20170917103544234]: /images/20220711/3a625fc264324e5cb6ec00384fed81b9.png
[20170917104305107]: /images/20220711/db34bdebb2764e90a1f3af7b3061f195.png
[20170917100114485]: /images/20220711/7ff1da533bbc488885f9c79a5fa8d6f5.png
[http_localhost_8085_fileup]: http://localhost:8085/fileup/
[20170917105334542]: /images/20220711/4f70a1453cd141b1a6bfb98de378ee9a.png
[https_download.csdn.net_download_bestcxx_11454361]: https://download.csdn.net/download/bestcxx/11454361