04SpringMvc_映射器_BeanNameUrlHanderMapping

这篇文章我们讲的是映射器，映射器的作用是什么样的请求交给Action,如果我们没有在xml配置文件中进行配置，默认的就是BeanNameUrlHanderMapping.

我们讲一个案例增加用户的案例.

案例结构图如下：

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" alt="" />

对上面的案例结构进行说明：

1. UserAction.java是增加用户的Action。

2.SpringMvc_002.xml是对应这个案例的配置文件。

3.Spirngmvc.xml是总的配置文件。

4.index.jsp是项目默认的访问页面。

5.succss.jsp是成功的访问页面。

第一步：写UserAction.java.

代码如下：

package com.guigu.shen.Action2;

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 UserAction implements Controller {

    @Override

    public ModelAndView handleRequest(HttpServletRequest request,

            HttpServletResponse response) throws Exception {

        ModelAndView modelAndView=new ModelAndView();

        modelAndView.addObject("message", "增加了一个用户");

        modelAndView.setViewName("success");

        return modelAndView;

    }

}

第二步：写SpringMvc_002.xml

<?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:aop="http://www.springframework.org/schema/aop"

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

      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/aop

      http://www.springframework.org/schema/aop/spring-aop-3.0.xsd

      http://www.springframework.org/schema/tx

      http://www.springframework.org/schema/tx/spring-tx-3.0.xsd

      http://www.springframework.org/schema/mvc

      http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd"

>

     <!-- 控制器(程序员)（必须配置） -->

<bean name="/adduser.action" class="com.guigu.shen.Action2.UserAction"></bean>

 <!-- 如果Action汇总书写的是视图逻辑名称，那么视图解析器就必须配置（解释一下什么是视图逻辑名称：就是类似Struts2中的，"success"）

               如果Action中配置的是视图真实名称，那么视图解析器就可选配置(解释一下什么是视图真实名称，就是"/jsp/success.jsp")

 -->

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

 <!-- 配置路径前缀 -->

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

 <!-- 配置路径后缀 -->

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

 <!-- 上面的配置方法其实就是前缀+视图逻辑名+后缀=真实路径 -->

 </bean>

</beans>

第三步：写总的配置文件

<?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:aop="http://www.springframework.org/schema/aop"

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

      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/aop

      http://www.springframework.org/schema/aop/spring-aop-3.0.xsd

      http://www.springframework.org/schema/tx

      http://www.springframework.org/schema/tx/spring-tx-3.0.xsd

      http://www.springframework.org/schema/mvc

      http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd"

>

<import resource="com/guigu/shen/Action2/springmvc_002.xml"/>

</beans>

第四步：写index.jsp

<%@ 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>

    This is my JSP page. <br>

    <a href="${pageContext.request.contextPath}/adduser.action">增加用户</a>

  </body>

</html>

对于上面的<a href="${pageContext.request.contextPath}/adduser.action">增加用户</a>我要重点解释一下。这么写的话，用火狐调试出来的访问路径是：

http://127.0.0.1:8080/SpringMvc_10day_self/adduser.action。但是如果改为<a href="/adduser.action">那么访问路径是：http://127.0.0.1:8080/adduser.action

。${pageContext.request.contextPath}这句话是访问绝对路径。也就是相当于/SpringMvc_10day_self。

第五步：写success.jsp

<%@ 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>

    Success. <br>

    ${message}

  </body>

</html>

第六步：配置web.xml文件

<?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>SpringMvc_10day_self</display-name>

  <servlet>

  <!--这个名字可以随便取得，但是这个名字取了之后，以后在 WEB-INF下面创建SpirngMVC的配置文件是，命名必须以这个开头，

  所以这里取名叫做DispatcherServlet，那么之后的xml文件取名必须为DispatcherServlet-servlet.xml（一个字都不能差）

  -->

  <servlet-name>DispatcherServlet</servlet-name>

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

 <!-- 通知DispatcherServlet去指定目录下找到springmvc.xml配置文件 -->

 <!--

 注意这里的  <param-name>contextConfigLocation</param-name>一个字母都不能有错

 一旦有错就会去WEB-INF下面去找

  -->

          <init-param>

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

              <param-value>classpath:springmvc.xml</param-value>

          </init-param>

 </servlet>

 <servlet-mapping>

   <servlet-name>DispatcherServlet</servlet-name>

    <url-pattern>*.action</url-pattern>

 </servlet-mapping>

  <welcome-file-list>

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

  </welcome-file-list>

</web-app>

调试：

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yDU45hrWNU6xjVOoa1jsEpx0CgLxGQv+odN03qzVabzS6K1Wab1Jv7VOaAD5gogk2goX7ufDHqDsHBwWidzZvdmQgTxiJw+hcS3adQ5eDgYL55LUP5aBODU45+paG04np69glJokySKMs49u2lqrp+pWFwyhHwCwXkuyb1ZpvPTOpXpk2Alt4mhqYdjW2daVk5V3+4+f3VH6rrFN9fre7qG0o6Ik86Im9s6xyaBqdYMbJYrb7bhMVqDfiAiaJmTDbQoopoE4NTjsa2zuOnzo5qjF19w9U3FcmpGYmy9Ozjp5KOyNOzjx9OSWts6yTkFC3ytVRkbqCvJ1q5EdRaaYd/rRZr/GXhVIikZUkP32q1oTKabZeeOJKbZ4/enVUMcrdarTbeeRAHczi5ERQVUcYprJWGiPTC/4FqpSECv1oH2MRS2ITQr/tUYx/Q2PuU+tTMY2NTJvq/QXryTHnqzPnk1Azp0Uzp0czUjD/W3m6WHs3sG9OJrVOATeAVEJvwYrFY05qs71+x7a2zx/1g/6DMVtlj5UA4LevktfjTRbCSWmlIeJFAt0WRyA9UFk7wkQ7KYLSCFlUSiQTzM3s0OOW4fO1maUWN2uicMDrvd/VLEmW0R6SkZaWkZSUdkRdfrsw+caq04rpYQiEQZrXSEOQ+E4CYWTAVRVLYgCEoAIdssVgZPVGaX8/TZiuMFovFYLJsLzO8fV5nsVjQOuJHjTdcxj5a5GvR3xc5RbXSkPCISNopciMoj2V0SNaFSKRsm1gnr2XVQfZbFElRFNjEUtgERVGUwK1yWOvIOPZtw72HDa0/Fl+pSknLSk7NoA2CFj0BGRidzMo5OawFm/C3YUBswo1ZOd5+ueGtA81X/6ylSw5Xaf4lR902YtXPMLUsuDEL4fmJW+Rr14UIJxSRubRNFHVI1kXmasrC18klESGSFo+/FGFswu0gLe6zzcomdHoLaFElnk2Mah0Hk1NPnjmfkv5V0hE57RHSo5nJqRm00r7KudFwR210JqdmjOpINkF7P+WeqeZGeC+ccCmSpq6T12o6JOuo8CLmipxbLHVI1lHs9DVE0oJMOry5Mat/dGAURYUXITbH8jt6kKxpNvfuyhwysgt2/3S5uyu6Ats9kUJONM5JZrPFbLZc7Zr5sEjT/U607o3Ng/GfP+lXK/oM75Ua37poeuuiKbLc9GjMRNfE2QR2AEi5j9mE+8TSJ60snIqU0IVuF+iQrBN0GvTUidnEpk2br9+4LR4DsiNpMdt3EEOloOC87EhaQcF5iqKYzsUHuGnTZp3e0vHoCf2BVsejJ0wPaOdCnTBjE9ndmjXBzLEQx8M5dtmRtPnbRKIsnXaEpCPywylpSUfkibL0r7/N//rb/ERZetm1Os3MrMrgSE7NGCFkE551rBb5Wk/MCGcT9CXiueyKIucYG8hNntmXxyZYkYkV21AEbYKzI9ZRM4WehrXSEG/NokgfbaJWGjJPd0Bswvx41PjzP0189L1mrOHe5B+PD/3La4fekf/06/HX89WlHYarnYYNZzRvnVMbZ0xmM/+BqG824f2tEfg2wTmHdA9osuA+h2zH9zGbuH7jNhM/C2UTHY+ecMJeJPiZTZz612/c5lSmO8fu1JexocdSUHDer/o+2oTIJTWsdWQfP5WcmnFIerT5/o9/ea7sHRz/+k/5lbW3s77+U6Isvf7Og74RzY89g5nHvvV50uG9MsRtAolhJOH0T0w/3g6Z4Kfvz0LLmayxzckmeIv5IZIWznExhyxuE2RH810mk/nbJs0/pD5rf6YzmUwmk6nt7Y//fV/jP6Y/v9XjLjmu0PxD6rNHwwaTCWsTQvBsQli0TdRKQ9ZK5XSWUSsNcZum1wVYB+5dnuCsTUxrzYxSZGK3U4qiNm7cPK01r1kj+Meda9YET2vNMTE7fOmH0Z9/7OaMhNbGjZvRJvx+zpw9N601nzl7TmhHMTE7+N0KKUWWRnc4rTXX1N7CthU5NM5BMZJIJCKT6sEpR1n1zUPSo5cra8emLfTDjp7nym/yCuksIyX9q5NnzqekZV2q9H0Jcw42Mfc5vHsXyI2d86SDngJwg5AT9nO2CW60BN4mZmZMJxWqvznwpOyhembGNKUzvnqg8W+/ePLdPfXMjInW4xFdfOmIeto4M2PC2QQpmyiKpCLKOHM3N0hyFy71ZljhUvnadfJa2l88LoDvgd3PU00HJjjpuKUD3pfQ8iUUhaJO3CboTULhx+jM2XMpsjRs+WLYRE3tLaY+s9+a2lsiNiGSyg5o7E+VOtoRuvpHJ4zOCaNTbXTeaLx7RJ6dnJqRmnnsjydyD6ekDYzrfX4g6qtNsOYLc1kg9F6+4Yg1eCcd0jJWCTMbQqZFvPGXhVNokoyzCSZ5ZvVTFs6syKDH5amAvFxQFk65PzMHjp6BWqmcNXnxzsiQsYnaxNCE4e8Sn/zfQ91RFwZDvuqlPn98pHZsBmFIM3P2vnFaPzM3m/A+7CyK9P6+7JkjO5Wj1zLd5yE8As0mkKVNb8/oMkcHpZk08RUauvnBw8fYTRxJpUejt8Xyy4OC1jCuJJUeffDwMV3twcPHFMXdKV0YFLSG39WDh49DQzfzRxW9LVYqPUp/zj8tmE3QHaKDwRIUtIY+FqGumDFEb4ut/uEWc+zMGKp/uMXU4Yj4etXQtKP5QdcXh1NOn/uetokJo1M5bTlx6uyxb/LOXSxL+yqn+UEX4UVMoZuwZ+7KTAc8N4oOyTp0XXNe0/LcCFYP3myCWV9k1ts88wIUj4N4Y8C9IUKO3OTdqfhaaQcrHrxLmKzD9/Qs9zqjdxofKfG4J+oOzK3VO2Oak00YjTNG48zdgelfnh36PxkDf5/zLKtRZTQa6XJa17um/p+0t1+pNxpncHYgBDMMxGTZ69aMfHtvYq42IRQqdMiFhhKWHpnIpEOaiSU6itDw5tjEg4ePg4LW0BHL2URRFN1P/ulzjA35aGR80TvCWh7Tf/7pc8w4UauK3hYrdOAiNkFRlPijhBGto7m982ByannN7a6nY+1dT0vKrn2TW3Cl6sYReXZze5fY4uUctZBpNn+WsWxerwqA9AavI+j1RoOBZRCM6HK9wcjrgZRNFEWulXZ4zZSVOlHMxYazCa+B0s87xGOZojzPwtRqI6r29i6KokJDN3HKr12ri46O5RSq1cbk5FRsOXoDT05OpUva27uCgtbwK9M7ZTqkKKq9vUutNoaGbkIHc+1aHf2Z0w9TITR0E92Q2UrvlP6cn19Ij4RpnpycSpfQio6OvXatjhlGfn4hMzz0hDAdonWYsfHl459+DWsdgxOGy1U30rNPHDgkPZicmn381JXqm4MTBrGVy7kLZxPkN4XZsHIE9Gr2e5kD+4RyhUo1ZTAYjD5KNWUI+ICJ4toERVHYKx61CU44MeX5+YXMZyY+mVCMjo6lOxe3CXpfzFdOiNLlnPBm9suxCU6oM96Bfo6OjmXqMM05/oIeOz1UuglaR0R+/CH5pH1E6xg3uOcd4wbniNYxMLlIv/3CZBPs5UlkXuBzD5574CpJJZ5q7H9RzqimDDo9wSx0eoNqytA7zl+bWHaiVBNGRlujY3PzCtvud20I3YSWqyaMVVV1W6NjmWpVVXX056TkVKY8N6+Q+YyKoijVhHFD6Cam26CgNWiFtvtddB2+OIPZELqpqqpuQ+imtvtdnJGj5UFBa+ivTIWgoDVMk7b7XegAmE3MGJKSU9G26LEzTSiK4p8lrOCfpQGtdGGCkw5aPqhNCCWhdB3OkiEdgVujYzeEbsrNK+QEsF82gS1BTYSxCU4542t8m6A7ZDxua3Qsp3lScmpSciqnhH9awCZAq1V4mxDPJoQklE0EBa3JzStE78PMV3GboP2I7hPrSkFBazaEbhKfPqPHwhgcJ+wZi0FTnqqqOqYT2n2wzVHLwPoX2ARopYtSjutBiyqwCdBKF9gE2AQIRBClVOpBi6eJCV1ycvLl2x0g0MoVNabUgxZPz58Py+VyFwCsZKjhEU3AY2lVanhE8/Tp87y8vJqamkD/ygAwL6iUlBQJsAikpKRkZmbW1dUF+icGgPlCBXoAAAAsd8AmAAAgADYBAAABsAkAAAiATQAAQABsAgAAAmATAAAQAJsAAIAA2AQAAAR8tYnurPUUtT6rG7+1MoqiqKhK33frdwMAAAKG1yYqowT+XZf1Wd2r2iYqozhH1p21nnP03opslskRAMDigssmurPW8yJA3CZWNCyboC0COfjKKGYbx9t4VQFglQI2wbIJ3KGzKrI2ruKTAgAI/toEknhz03HufZZbCcXvBvz90xW537GxS54xeTaKTob4G3nzFW5V/OniHDKvC1arSu7gxVoCwGLgl00gUVIZhV6kaACxW3dnZeGCzu8GnP0zgYSJb54piKYImGxCqDI+m8DW9YzPs5E7QUGmMpxuOTXdHbEnRSKOCACLgH82gRSyLlGxIMXidwPu/unv+ISG0yPBJbgpAeNAvCYcm2A7JaYqe5tg5sEaID5j8TTknSvhTgFg4Zj72oRQrk6HGeHa9bsBMUBYg+YmCKKdY0LNm9dzd8lCPEPhbBZwK0+nyBwK047eyv8RSBYIAAvB/GwCfw9EJs++TfN9aOCfTSBbiS4hfEfGTrR8i0nxcOccMLJFyLIQm+AD6QSwyCyGTaAVCEt8Pjfw0yaYzWSXEE/ciUdJbsYbIPdYODZByCYgdwCWnEW0CYGe5tbAX5twb68ku4R47ImvGwjCX5tAOuL2g1QWmFawshDwCWCpWXCb6M6KYi8HkrIJ3xr4bRN0HrF+PSmq2P1URgkfpN82wX0UJPxgCNlIt2Q/IRHsyNWdtZ41jwELARaDRcgmfHmu73cD/22CEDjMTkVeWuA093/SIfjaBLIhqpJ7bOxW2CPn9wo2ASweq/gvRAOZoS/g36zARAMIOKvXJnxYvFw8Fs4mwCWAwLNabSLA0TV3m6iMEljdBICAsQptQuy56pKOYY4uxX47AhIJIPCsQpsAAGBhAZsAAIAA2AQAAATAJgAAIAA2AQAAAY5N9BZszN51rNfztSX9J3kFnd7NncfyIhJaWC06q3dtrO50LQ0t6T/JTq9Yop0BAEAjbhMuV0VJhMcpMB7h8tcmWtJ/kh1BlHCHncfyItjOBQDAYiNoE53H8oQjGQlUjE30Fmzk1C+pcW/ipQMVJRxT6DyWh5Twu8KI5WsAACw0ojbB5A4VJexQzyvoxPvIrmO9dCdeL+is3jU/mxCdZfDSHwAAFhqvTdQksO7/BcfyIhKq3VHqsYmahOxdx6pZCxaIg9QkgE0AwCqEnE3UJOQVHCuhjSO9wsVd1/TfJvxZmwCbAIDAM++1CcgmAGC149vaBAteNuGJ6kWyCVjCBIDAQnogSgKN6poE2gLEbYL9OJNgE8QXJSCbAIBFR8QmBO/kaFjWJGR7kg7GHYRtorN6l39rEzxbAQBgycHaREvBxuz0Cvy6gGdmQYPe7X2wCdaDVU+JSDbBykQAAAgMLJvwLFvSN3AfsglW2JNtoiaB94alqE2wJyAAAAQG9nsTrJgkZxPIjMOFTBAE3sLsrN7FX2jA2gQyi4F1BwAIOCJ/IUrKJjx/7uF9L4u7SOFyubzZBP7Riccm0Oev7rb8GQoAAIHAaxPklcXlrQCeRABY3cC/NwEAAAGwCQAACIBNAABAAGwCAAACYBMAABAAmwAAgADYBAAABMAmAAAgADYBAAABsAkAAAiATQAAQABsAgAAAmATAAAQAJsAAIAA2AQAAATAJgAAIAA2AQAAAbAJAAAIgE0AAEAAbAIAAAJgEwAAEACbAACAANgEAAAEwCYAACAANgEAAAGwCQAACIBNAABAAGwCAAACYBMAABAAmwAAgADYBAAABMAmAAAgADYBAAABsAkAAAiATQAAQABsAgAAAmATAAAQAJsAAIAA2AQAAATAJgAAIAA2AQAAAbAJAAAIgE0AAEAAbAIAAAJgEwAAEACbAACAANgEAAAEwCYAACAANkjsG94AAAA1SURBVAEAAAGwCQAACIBNAABAAGwCAAACYBMAABAAmwAAgADYBAAABMAmAAAgADYBAACB/wVHoUSRfR+TTwAAAABJRU5ErkJggg==" alt="" />

运行结果：对的。

总结一下执行的流程：

浏览器发送请求。然后默认进入了index.xml。然后点击增加用户的按钮，发送了一个Action请求，因为web.xml中的配置，该请求被DispatcherServlet拦截下来。

然后找到了springmvc_002.xml配置文件，创建了里面的bean实例(com.guigu.shen.Action2.UserAction;InternalResourceViewResolver)。接着根据

映射器（BeanNameUrlHandlerMapping）找到了/adduser.action请求对应的UserAction对象,然后执行里面的handleRequest方法，最后再根据视图解析器（InternalResourceViewResolver）找到success.jsp页面。并把数据显示出来。

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