Springmvc 简明教程

Spring MVC - Simple Url Handler Mapping Example

以下示例展示如何使用 Spring Web MVC 框架使用 Simple URL Handler Mapping。SimpleUrlHandlerMapping 类有助于将 URL 显式映射到其各自的控制器。

The following example shows how to use Simple URL Handler Mapping using the Spring Web MVC framework. The SimpleUrlHandlerMapping class helps to explicitly-map URLs with their controllers respectively.

<beans>
   <bean class = "org.springframework.web.servlet.view.InternalResourceViewResolver">
      <property name = "prefix" value = "/WEB-INF/jsp/"/>
      <property name = "suffix" value = ".jsp"/>
   </bean>

   <bean class = "org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
      <property name = "mappings">
         <props>
            <prop key = "/welcome.htm">welcomeController</prop>
            <prop key = "/helloWorld.htm">helloController</prop>
         </props>
      </property>
   </bean>

   <bean id = "helloController" class = "com.tutorialspoint.HelloController" />

   <bean id = "welcomeController" class = "com.tutorialspoint.WelcomeController"/>
</beans>

例如，使用以上配置，如果请求 URI

For example, using above configuration, if URI

  1. /helloWorld.htm is requested, DispatcherServlet will forward the request to the HelloController.

  2. /welcome.htm is requested, DispatcherServlet will forward the request to the WelcomeController.

首先，让我们准备好一个运行的 Eclipse IDE，然后考虑以下步骤使用 Spring Web Framework 开发一个基于动态表单的 Web 应用程序。

To start with, let us have a working Eclipse IDE in place and consider the following steps to develop a Dynamic Form based Web Application using the Spring Web Framework.

Step

Description

1

Create a project with a name TestWeb under a package com.tutorialspoint as explained in the Spring MVC - Hello World chapter.

2

Create Java classes HelloController and WelcomeController under the com.tutorialspoint package.

3

Create view files hello.jsp and welcome.jsp under the jsp sub-folder.

4

The final step is to create the content of the source and configuration files and export the application as explained below.

HelloController.java

package com.tutorialspoint;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.AbstractController;

public class HelloController extends AbstractController{

   @Override
   protected ModelAndView handleRequestInternal(HttpServletRequest request,
      HttpServletResponse response) throws Exception {
      ModelAndView model = new ModelAndView("hello");
      model.addObject("message", "Hello World!");
      return model;
   }
}

WelcomeController.java

package com.tutorialspoint;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.AbstractController;

public class WelcomeController extends AbstractController{

   @Override
   protected ModelAndView handleRequestInternal(HttpServletRequest request,
      HttpServletResponse response) throws Exception {
      ModelAndView model = new ModelAndView("welcome");
      model.addObject("message", "Welcome!");
      return model;
   }
}

TestWeb-servlet.xml

<beans xmlns = "http://www.springframework.org/schema/beans"
   xmlns:context = "http://www.springframework.org/schema/context"
   xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance"
   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">

   <bean class = "org.springframework.web.servlet.view.InternalResourceViewResolver">
      <property name = "prefix" value = "/WEB-INF/jsp/"/>
      <property name = "suffix" value = ".jsp"/>
   </bean>

   <bean class = "org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
      <property name = "mappings">
         <props>
            <prop key = "/welcome.htm">welcomeController</prop>
            <prop key = "/helloWorld.htm">helloController</prop>
         </props>
      </property>
   </bean>

   <bean id = "helloController" class = "com.tutorialspoint.HelloController" />

   <bean id = "welcomeController" class = "com.tutorialspoint.WelcomeController"/>
</beans>

hello.jsp

<%@ page contentType = "text/html; charset = UTF-8" %>
<html>
   <head>
      <title>Hello World</title>
   </head>
   <body>
      <h2>${message}</h2>
   </body>
</html>

welcome.jsp

<%@ page contentType = "text/html; charset = UTF-8" %>
<html>
   <head>
      <title>Welcome</title>
   </head>
   <body>
      <h2>${message}</h2>
   </body>
</html>

一旦创建好源代码和配置文件，就导出你的应用程序。右键单击你的应用程序，使用 Export → WAR File 选项，并将你的 TestWeb.war 文件保存到 Tomcat 的 webapps 文件夹中。

Once you are done with creating source and configuration files, export your application. Right click on your application, use the Export → WAR File option and save your TestWeb.war file in Tomcat’s webapps folder.

现在，启动你的 Tomcat 服务器并确保你可以使用标准浏览器访问 webapps 文件夹中的其他网页。如果 Spring Web 应用程序一切正常，尝试一下 URL − http://localhost:8080/TestWeb/helloWorld.htm ，我们将看到以下界面。

Now, start your Tomcat server and make sure you are able to access other webpages from the webapps folder by using a standard browser. Try a URL − http://localhost:8080/TestWeb/helloWorld.htm and we will see the following screen, if everything is fine with the Spring Web Application.

spring beanname urlmapping

尝试一下 URL http://localhost:8080/TestWeb/welcome.htm ，如果你的 Spring Web 应用程序一切正常，你应该会看到以下结果。

Try a URL http://localhost:8080/TestWeb/welcome.htm and you should see the following result if everything is fine with your Spring Web Application.

spring beanname urlmapping2