据说,现在springmvc火了,好多企业都在使用,既然这样,咱们也得会点,于是乎就开始自学了,通过找资料,终于做出来了一个简单案例,这里分享供大家浏览,主要分为以下几个步骤:
一、springmvc是一个mvc框架,通过mvc很好的将数据、业务、表现进行分离
二、springmvc是围绕DispatcherServlet展开的,由DispatcherServlet负责将请求派发到特定的handler
springmvc框架搭建步骤:
1.创建项目,拷贝springmvc相关的jar包。
2.配置web.xml主要配置前端控制器DispatcherServlet
<servlet><servlet-name>springmvc</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class></servlet><servlet-mapping><servlet-name>springmvc</servlet-name><url-pattern>*.do</url-pattern></servlet-mapping>
3.在web-inf下创建springmvc配置文件,[servletname]-servlet.xml,文件名必须是springmvc-servlet.xml
4.配置HandlerMapping映射,根据beanname找到对应的Controller(可以省略)
<bean class="org.springframework.web.servlet.mvc.support.ControllerBeanNameHandlerMapping">
5.创建jsp页面,需要请求发出请求的页面
6.创建Controller,继承AbstractController,重写handleRequestInternal(HttpServletRequest request,
HttpServletResponse response)
//返回数据和页面@Overrideprotected ModelAndView handleRequestInternal(HttpServletRequest request,HttpServletResponse response) throws Exception {String hello = request.getParameter("file");System.out.println(hello);ModelAndView modelAndView = new ModelAndView("welcome"); //返回到的页面modelAndView.addObject("helloword",hello); //返回值return modelAndView;}
7.配置视图解析器
<!-- 配置视图解析器 --><bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"><!-- 配置前缀和后缀 --><property name="prefix" value="/"></property><!-- 后缀 --><property name="suffix" value=".jsp"></property></bean>
下面我把源码放上来吧;
web.xml里面的配置:
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"><display-name></display-name> <welcome-file-list><welcome-file>index.jsp</welcome-file></welcome-file-list><servlet><servlet-name>springmvc</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><init-param><param-name>contextConfigLocation</param-name><param-value>/WEB-INF/pringMVC-servlet.xml</param-value></init-param><load-on-startup>1</load-on-startup></servlet><servlet-mapping><servlet-name>springmvc</servlet-name><url-pattern>*.do</url-pattern></servlet-mapping>
</web-app>
Springmvc里面的配置:
<?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:mvc="http://www.springframework.org/schema/mvc"xmlns:p="http://www.springframework.org/schema/p"xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsdhttp://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsdhttp://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd"><!-- 配置HandlerMapping映射,根据beanname找到对应的Controller --><bean class="org.springframework.web.servlet.mvc.support.ControllerBeanNameHandlerMapping"></bean><!-- 配置Controller --><bean id="hello.do" class="org.controller.HelloController"></bean><!-- 配置视图解析器 --><bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"><!-- 配置前缀和后缀 --><property name="prefix" value="/"></property><!-- 后缀 --><property name="suffix" value=".jsp"></property></bean>
</beans>
HelloController控制器里面的代码:
/** * @Title: HelloController.java* @Package org.controller* @Description: TODO该方法的主要作用:* @author A18ccms A18ccms_gmail_com * @date 2017-8-30 下午8:38:53* @version V1.0 */package org.controller;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.springframework.web.servlet.ModelAndView;import org.springframework.web.servlet.mvc.AbstractController;/** * * 项目名称:springmvc_day1 * 类名称:HelloController * 类描述: 控制器* 创建人:Mu Xiongxiong * 创建时间:2017-8-30 下午8:38:54 * 修改人:Mu Xiongxiong * 修改时间:2017-8-30 下午8:38:54 * 修改备注: * @version * */public class HelloController extends AbstractController {@Overrideprotected ModelAndView handleRequestInternal(HttpServletRequest request,HttpServletResponse response) throws Exception {String hello = request.getParameter("file");System.out.println(hello);ModelAndView modelAndView = new ModelAndView("/welcome"); //返回到的页面modelAndView.addObject("helloword",hello); //返回值return modelAndView;}}
index.jsp里面的代码:
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><base href="<%=basePath%>"><title>My JSP 'index.jsp' starting page</title><meta http-equiv="pragma" content="no-cache"><meta http-equiv="cache-control" content="no-cache"><meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"><meta http-equiv="description" content="This is my page"><!--<link rel="stylesheet" type="text/css" href="styles.css">--></head><body><form action="hello.do" method="post">hello:<input type="text" name="file"/><br/><input type="submit" value="提交"/></form></body>
</html>
welcome.jsp的代码:
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><base href="<%=basePath%>"><title>My JSP 'index.jsp' starting page</title><meta http-equiv="pragma" content="no-cache"><meta http-equiv="cache-control" content="no-cache"><meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"><meta http-equiv="description" content="This is my page"><!--<link rel="stylesheet" type="text/css" href="styles.css">--></head><body>hello:${helloword }</body>
</html>
最后看一下目录对应关系:
运行看welcome.jsp页面:
运行完毕,遇到的问题:
Springmvc中提交from之后不跳转不进控制器
Could not open ServletContext resource [/WEB-INF/springmvc-servlet.xml]【解决方案】