5.SpringMVC静态文件的访问

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我们在进行springMVC开发时，必定会在jsp页面引入js文件、img文件和css文件。大多数人会将这些分类存放在WebRoot文件下新建的文件夹下面。同时，会在web.xml文件中配置拦截所有请求即配置<url-pattern> / </url-pattern>。这样就造成了页面无法访问到js、img和css文件夹中的文件了。

在SpringMVC中可以利用 <mvc:resources location="/img/" mapping="/img/**"/> 来访问。从而解决了上述问题。

引入jar包

1.web.xml配置

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

<web-app version="2.5"

    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_2_5.xsd">

  <welcome-file-list>

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

  </welcome-file-list>

    <servlet>

    <!--基础配置有springMVC配置的servlet路径-->

    <servlet-name>SpringMVC</servlet-name>

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

        <!--如果需要加载其他地方的多个springMVC配置文件-->

           <init-param>

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

               <param-value>classpath*:config/SpringMVC-servlet.xml</param-value>

               <!--classpath*代表在src下寻找config文件夹再在其中寻找以-servlet.xml文件结尾的文件-->

           </init-param>

           <!--配置加载顺序的-->

           <load-on-startup>1</load-on-startup>

    </servlet>

    <servlet-mapping>

        <servlet-name>SpringMVC</servlet-name>

        <url-pattern>/</url-pattern><!-- 拦截所有请求 -->

    </servlet-mapping>

</web-app>

web.xml

2.spring-servlet.xml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:p="http://www.springframework.org/schema/p"

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

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

    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">

    <!-- 常规单class多方法bean -->

    <bean name="/test1/multi" class="controller.MultiController">

        <property name="methodNameResolver">

            <ref bean="paramMethodResolver" />

        </property>

    </bean>

        <!-- 常规单class多方法bean，静态资源访问 -->

    <bean name="/test1/static" class="controller.StaticController">

        <property name="methodNameResolver">

            <ref bean="paramMethodResolver" />

        </property>

    </bean>

    <!-- 常规单class单方法bean -->

    <bean name="/test1/hello" class="controller.HelloSpringMVCController"></bean>

    <!-- 静态资源访问 -->

    <mvc:resources location="/img/" mapping="/img/**" />

    <mvc:resources location="/js/" mapping="/js/**" />

    <!--以上两句就是设置spring的拦截器不对img文件夹与js文件夹的文件进行拦截-->

    <!-- 参数名称解析 -->

    <bean id="paramMethodResolver"

        class="org.springframework.web.servlet.mvc.multiaction.ParameterMethodNameResolver">

        <property name="paramName" value="action"></property>

    </bean>

    <!-- 视图解析器 -->

    <bean id="viewResolver"

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

        <property name="prefix" value="/"></property> <!-- 前缀 -->

        <property name="suffix" value=".jsp"></property> <!-- 后缀 -->

    </bean>

</beans>

3.StaticController之间转换器，控制器

package controller;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;

import org.springframework.web.servlet.mvc.multiaction.MultiActionController;

public class StaticController extends MultiActionController {

     public ModelAndView img(HttpServletRequest request,

                HttpServletResponse response) {

            System.out.println("----img----");

            return new ModelAndView("/staticFile");

        }

     public ModelAndView jQuey(HttpServletRequest request,

                HttpServletResponse response) {

            System.out.println("----jquery----");

            return new ModelAndView("/JQuery");

        }

}

4.jQuery.jsp和

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

    pageEncoding="UTF-8"%>

<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>

<!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>实现一个controller写多个方法</title>

    </head>

    <body>

        <h>图片访问</h>

        <div>

            <img alt="图片" src="../img/3.png">

        </div>

    </body>

</html>

staticFile.jsp

结果截图

反馈的视图

<%@ 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>

    <script type="text/javascript" src="../js/jquery-1.10.2.min.js">

        $(document).ready(function(){

            alert(11);

        });

    </script>

  </head>

  <body>

   jQuery请求<br>

  </body>

</html>