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springMVC_03_怎么做

2016-06-29 11:03 169 查看

1.上手视频

2.官方示例

3.写demo

4.看开元代码

5.项目实践

最简配通

web.xml

<?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/web-app_3_0.xsd"

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">



<servlet>

<description>spring mvc servlet</description>

<servlet-name>springMvc</servlet-name>

<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

<init-param>

<description>spring mvc 配置文件</description>

<param-name>contextConfigLocation</param-name>

<param-value>classpath:spring-mvc.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>

</web-app>

配置文件

spring-mvc.xml

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

xmlns:mvc="http://www.springframework.org/schema/mvc" 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"

xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">


<context:component-scan base-package="hlt.controller" />



<bean

class="org.springframework.web.servlet.view.InternalResourceViewResolver">



<property name="prefix" value="/" />

<property name="suffix" value=".jsp" />

</bean>

</beans>

java类

IndexController

package hlt.controller;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.log4j.Logger;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

import org.springframework.web.servlet.ModelAndView;

@Controller

public class IndexController {

private static final Logger logger = Logger.getLogger(IndexController.class);

@RequestMapping(value = "/index2", method = RequestMethod.GET)

public ModelAndView index(HttpServletRequest request, HttpServletResponse response) {

ModelAndView view = new ModelAndView("/login");

view.addObject("c", "好 ");

request.setAttribute("a", "hello");

logger.info("dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd");

return view;

}

}

页面login.jsp

<?xml version="1.0" encoding="UTF-8" ?>

<%@ page language="java" contentType="text/html; charset=UTF-8"

pageEncoding="UTF-8"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />

<title>Insert title here</title>

<%
String str = (String)request.getAttribute("a");

%>

</head>

<body>中国人${c} <%=str %>

</body>

</html>

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