5.SpringMVC静态文件的访问

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>

jQuery.jsp