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,
<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;
<?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,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:
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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。