手把手教你整合maven+spring项目(2)

在上一篇博客里,讲解了如何新建Maven项目,今天在我们将会在上一篇博客的基础上,整合springmvc,本篇博客适合新手入门springmvc,下面将开始今天的正文;

第一步:添加包com.zds,并添加controller、dao、service各包,

然后,修改pom.xml,添加springmvc所需要的jar环境,这里博主用的是4.16版本的spring资源包,如下所示,

<?xml version="1.0" encoding="UTF-8"?>
<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.zds</groupId>
	<artifactId>mavenDemo</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>war</packaging>
	<name>MavenDemo Maven Webapp</name>
	<url>http://maven.apache.org</url>
	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<maven.compiler.source>1.7</maven.compiler.source>
		<maven.compiler.target>1.7</maven.compiler.target>
	</properties>
	<dependencies>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.11</version>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>javax</groupId>
			<artifactId>javaee-api</artifactId>
			<version>7.0</version>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>jstl</groupId>
			<artifactId>jstl</artifactId>
			<version>1.2</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
			<version>4.1.6.RELEASE</version>
			<type>jar</type>
			<scope>compile</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-core</artifactId>
			<version>4.1.6.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</artifactId>
			<version>4.1.6.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-tx</artifactId>
			<version>4.1.6.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-jdbc</artifactId>
			<version>4.1.6.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context-support</artifactId>
			<version>4.1.6.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>log4j</groupId>
			<artifactId>log4j</artifactId>
			<version>1.2.15</version>
			<exclusions>
				<exclusion>
					<groupId>javax.jms</groupId>
					<artifactId>jms</artifactId>
				</exclusion>
				<exclusion>
					<groupId>com.sun.jdmk</groupId>
					<artifactId>jmxtools</artifactId>
				</exclusion>
				<exclusion>
					<groupId>com.sun.jmx</groupId>
					<artifactId>jmxri</artifactId>
				</exclusion>
			</exclusions>
		</dependency>
	</dependencies>
</project>

 

修改好pow.xml文件夹后,在webapp下新建一个resources文件夹用来存放css/img/js等文件,目前我们新建一个img文件夹并随便放一张图片,等后面使用,然后在WEB-INF目录下新建一个jsp文件夹,用来存放我的新建的jsp文件;

第二步:添加spring.xml到src/main/resources下,这里我们没把spring的配置放在文件里,而是放在了spirng-mvc.xml里,具体配置如图,

<?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:aop="http://www.springframework.org/schema/aop"
	xmlns:context="http://www.springframework.org/schema/context" 
	xmlns:tx="http://www.springframework.org/schema/tx"
	xmlns:util="http://www.springframework.org/schema/util" 
	xmlns:p="http://www.springframework.org/schema/p"
	xsi:schemaLocation="http://www.springframework.org/schema/beans   
  http://www.springframework.org/schema/beans/spring-beans.xsd  
  http://www.springframework.org/schema/aop   
  http://www.springframework.org/schema/aop/spring-aop-4.1.xsd
  http://www.springframework.org/schema/tx   
  http://www.springframework.org/schema/tx/spring-tx-4.1.xsd
  http://www.springframework.org/schema/context   
  http://www.springframework.org/schema/context/spring-context-4.1.xsd
  http://www.springframework.org/schema/util   
  http://www.springframework.org/schema/util/spring-util-4.1.xsd
  ">
  

</beans>

添加spring-mvc.xml到src/main/resources下,component-scan为我们项目的代码所在包的路径com.zds.*,

静态资源路径为之前img所在的resources下的所有文件夹,

<?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:p="http://www.springframework.org/schema/p"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:util="http://www.springframework.org/schema/util" 
	xmlns:mvc="http://www.springframework.org/schema/mvc"
	xsi:schemaLocation="http://www.springframework.org/schema/beans 
	http://www.springframework.org/schema/beans/spring-beans-4.1.xsd 
	http://www.springframework.org/schema/context 
	http://www.springframework.org/schema/context/spring-context-4.1.xsd 
	http://www.springframework.org/schema/util 
	http://www.springframework.org/schema/util/spring-util-4.1.xsd 
	http://www.springframework.org/schema/mvc 
	http://www.springframework.org/schema/mvc/spring-mvc.xsd "> <!-- 开启注解模式驱动 -->
	
	<mvc:annotation-driven></mvc:annotation-driven> 
	<!-- 扫包 -->
	
	<context:component-scan base-package="com.zds.*"></context:component-scan>
	
	<!-- 静态资源过滤 -->
	<mvc:resources location="/resources/" mapping="/resources/**" />
	
	 <!-- 视图渲染 jsp/freemaker/velocity -->
	<bean
		class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 
		<!-- 制定页面存放的路径 -->
		<property name="prefix" value="/WEB-INF/jsp/"></property> <!-- 文件的后缀 -->
		<property name="suffix" value=".jsp"></property>
	</bean>
</beans>

然后,我们就可以配置web.xml文件了,打开后配置如下即可: 

<?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" xmlns:web="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">
  <display-name>MavenDemo</display-name>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  
   <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:spring*.xml</param-value>
  </context-param>
  
  <listener>
    <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
  </listener>
  
  <filter>
    <filter-name>encoding</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>
  </filter>
  
  <filter-mapping>
    <filter-name>encoding</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
  
  <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:spring-mvc*.xml</param-value>
    </init-param>
  </servlet>
  
  <servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
  
</web-app>

配置好web.xml文件夹,我们就可以开始具体业务的代码设计,打开Index.jsp,我们在原有代码的基础上添加了一个超链接,
这是一个发到后台的简单请求,请求中不仅带了具体路径还加了简单的参数,具体代码如下所示:

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!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>Insert title here</title>
</head>
<body>
this is mavendemo 第一天 <a href="login/view?path=demo" >点击查看图片</a>
</body>
</html>

写好index.jsp页面后,我们要新建我们的controller层代码,新建LoginController.java文件,请求到达具体代码如下:

package com.zds.controller;
import javax.servlet.http.HttpServletRequest;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

@Controller
@RequestMapping("login")
public class LoginController {
    
    @RequestMapping("/view")
    public ModelAndView view(HttpServletRequest request){
        //获取请求中的path参数
        String path = request.getParameter("path") + "";
        //新建视图变量
        ModelAndView mav = new ModelAndView();
        //获取web项目的根路径,方便我们取到Img下的图片
        String contextPath = request.getContextPath();
        //保存路径到内存中
        mav.addObject("contextPath" , contextPath);
        //设置跳转的页面名称
        mav.setViewName(path);
        return mav;
    }
}

因为我们index.jsp中的path参数为demo,所以下面我们要在WEB-INF下的jsp文件夹下新建一个demo.jsp来显示图片,具体代码如下:

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<style>
div.pos_right
{
position:relative;
left:100px;
top:100px;
height: 90px;
width: 90px;
}
	</style>
<body>
<div class="pos_right">this my windows.jpg 第二天<img src="${contextPath}/resources/img/windows.jpg" /></div>
</body>
</html>

其中img的src对应的图片名字改为你自己项目中的图片名称即可,这里用的是windows.jpg;

第三步:把项目run as到tomcat服务器下启动,

(1)启动后若报错异常:Error configuring application listener of class org.springframework.web.context.ContextLoaderListener,则点击查看解决方案,按照链接操作即可,然后重新运行项目;

(2)启动后无任何报错异常,然后在浏览器输入http://localhost:8080/MavenDemo/显示如下:

点击超链接后页面跳转到如下页面:

到目前为止,整合springmvc的任务已经完成,我们将在下一篇博客在此基础上进一步添加Spring Security提供的登陆注销功能。

 

 

 

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