springMVC之HelloWorld

一、总结

　　1.web项目一定要把引用的jar包放在WEB-INF/lib下(common-logging1.2,spring4.1.6所有包，其实不需要那么多，懒得筛选了,)

　　2.web.xml中要初始化servlet配置文件，如*-servlet.xml

　　3.显示声明处理器映射为org.springframework.web.servlet.handler.SimpleUrlHandlerMapping，默认的BeanNameUrlMapping尝试未成功。

二、环境环境

　　1.我的开发环境（windows+EclipseJee+tomcat6+jdk6），不同的同学可以忽略

　　2.项目路径图：

三、代码：

　　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"

    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"

    id="WebApp_ID" version="2.5">

    <display-name>springmvcDemo</display-name>

    <welcome-file-list>

        <welcome-file>index.html</welcome-file>

    </welcome-file-list>

    <!-- 本配置文件并没有指定dd-servlet.xml，这是因为DispatcherServlet会自动查找WEB-INF/<servlet-name>-servlet.xml的配置文件 -->

    <servlet>

        <servlet-name>servletName</servlet-name>

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

        <!-- 一定要初始化servlet配置文件，不然会报错：Allocate exception for servlet servletName -->

        <init-param>

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

            <param-value>classpath:/zz/config/servletName-servlet.xml</param-value>

            <!-- <param-value>/WEB-INF/servletName-servlet.xml</param-value> -->

        </init-param>

    </servlet>

    <servlet-mapping>

        <servlet-name>servletName</servlet-name>

        <url-pattern>/</url-pattern>

    </servlet-mapping>

</web-app>

servletName-servlet.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"

    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"

    id="WebApp_ID" version="2.5">

    <display-name>springmvcDemo</display-name>

    <welcome-file-list>

        <welcome-file>index.html</welcome-file>

    </welcome-file-list>

    <!-- 本配置文件并没有指定dd-servlet.xml，这是因为DispatcherServlet会自动查找WEB-INF/<servlet-name>-servlet.xml的配置文件 -->

    <servlet>

        <servlet-name>servletName</servlet-name>

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

        <!-- 一定要初始化servlet配置文件，不然会报错：Allocate exception for servlet servletName -->

        <init-param>

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

            <param-value>classpath:/zz/config/servletName-servlet.xml</param-value>

            <!-- <param-value>/WEB-INF/servletName-servlet.xml</param-value> -->

        </init-param>

    </servlet>

    <servlet-mapping>

        <servlet-name>servletName</servlet-name>

        <url-pattern>/</url-pattern>

    </servlet-mapping>

</web-app>

IndexController.java

package zz.springmvc.demo;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;

import org.springframework.web.servlet.mvc.Controller;

public class IndexController implements Controller{

    // 扩展属性，通过mv—servlet设值注入

    public String word;

    public String getWord() {

        return word;

    }

    public void setWord(String word) {

        this.word = word;

    }

    @Override

    public ModelAndView handleRequest(HttpServletRequest arg0,

            HttpServletResponse arg1) throws Exception {

        System.out.println("lalalala");

        return new ModelAndView("index","dataview",word);

    }

}

index.jsp

<%@ 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>

    ${dataview}

</body>

</html>

首页：index.html

<!DOCTYPE html>

<html>

<head>

<meta charset="UTF-8">

<title>Home Page</title>

</head>

<body>

    WelCome

</body>

</html>

巴特西

springMVC之HelloWorld

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