本文使用 Spring Web model-view-controller (MVC) framework
建立一個簡單的一個Hello World 程式 且可判斷Mobile Tablet Desktop進入這頁面
有三種方式：
　方式三：站點切換
                    指的是可以根據方式一以及方式二將使用者切換到適合網站的能力
                    此方式有四種方法使用(mDot, dotMobi, standard以及urlPath)
                    本文使用urlPath呈現效果
                     
1、請參考建立一個SpringMVC Annotation Project - Hello World此篇文章，以下是以此作為延伸

2、加入 spring-mobile-device.jar
3. Controller 部分
請參考建立一個SpringMVC Annotation Project 2-1 (判斷Mobile Tablet Desktop) - Hello World


4. 更改AppConfig 部分(Spring 設定) - 需繼承 WebMvcConfigurerAdapter 
目錄 : src/main/java/com/sample/config 
檔名 : AppConfig.java

package com.sample.config;



import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.ComponentScan;

import org.springframework.context.annotation.Configuration;

import org.springframework.mobile.device.DeviceResolverHandlerInterceptor;

import org.springframework.mobile.device.switcher.SiteSwitcherHandlerInterceptor;

import org.springframework.web.servlet.config.annotation.EnableWebMvc;

import org.springframework.web.servlet.config.annotation.InterceptorRegistry;

import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

import org.springframework.web.servlet.view.InternalResourceViewResolver;

import org.springframework.web.servlet.view.JstlView;





@EnableWebMvc

@Configuration

@ComponentScan({ "com.sample.web.*" })

public class AppConfig extends WebMvcConfigurerAdapter{

 

 /**

  * 設備攔截器

  * @return DeviceResolverHandlerInterceptor

  */

 @Bean

 public DeviceResolverHandlerInterceptor deviceResolverHandlerInterceptor() {

     return new DeviceResolverHandlerInterceptor();

 }

 

 /**

  * 網址切換攔截器

  * 第一個参数用於指定mobile的路徑，第二个参数用於指定應用的root path

  * @return SiteSwitcherHandlerInterceptor

  */

 @Bean

 public SiteSwitcherHandlerInterceptor siteSwitcherHandlerInterceptor() {

     return SiteSwitcherHandlerInterceptor.urlPath("/m", "/SampleSpringMVC-2-3");

 }

 

 /**

  * 加入SPRING攔截器

  */

 @Override

 public void addInterceptors(InterceptorRegistry registry) {

     registry.addInterceptor(deviceResolverHandlerInterceptor());

     registry.addInterceptor(siteSwitcherHandlerInterceptor());

 }



 /**

  * 頁面導向

  * @return InternalResourceViewResolver

  */

 @Bean

 public InternalResourceViewResolver viewResolver() {

  InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();

  viewResolver.setViewClass(JstlView.class);

  viewResolver.setPrefix("/WEB-INF/pages/");

  viewResolver.setSuffix(".jsp");

  return viewResolver;

 }

 

}

 

5.建立 SpringMvcInitializer.java(需要增加urlPattern)
目錄 : src/main/java/com/sample/config/code
檔名 : SpringMvcInitializer.java

package com.sample.config.core;



import javax.servlet.Filter;

import javax.servlet.ServletContext;

import javax.servlet.ServletException;

import javax.servlet.ServletRegistration.Dynamic;



import org.springframework.web.context.ContextLoaderListener;

import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;

import org.springframework.web.filter.CharacterEncodingFilter;

import org.springframework.web.servlet.DispatcherServlet;

import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;



import com.sample.config.AppConfig;



public class SpringMvcInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {



 @Override

 protected Class[] getRootConfigClasses() {

  return new Class[] { AppConfig.class };

 }



 @Override

 protected Class[] getServletConfigClasses() {

  return null;

 }



 @Override

 protected String[] getServletMappings() {

  return new String[] { "/" };

 }

 

 @Override

    protected Filter[] getServletFilters() {

        CharacterEncodingFilter utf8Filter = new CharacterEncodingFilter();

        utf8Filter.setEncoding("UTF-8");

        utf8Filter.setForceEncoding(true);

        return new Filter[] { utf8Filter };

    }

 

 @Override

 public void onStartup(ServletContext servletContext) throws ServletException {

            AnnotationConfigWebApplicationContext rootContext 

      = new AnnotationConfigWebApplicationContext();

     rootContext.register(AppConfig.class);

     rootContext.setServletContext(servletContext); 

     rootContext.scan("com.sample.config");

     

     Dynamic dynamic = servletContext.addServlet("mvc-dispatcher", 

       new DispatcherServlet(rootContext));  

     dynamic.addMapping("/","/m/*");  

            dynamic.setLoadOnStartup(1);



     servletContext.addListener(new ContextLoaderListener(rootContext));

  }

 

}

 


6.建立JSP 頁面
目錄 : src/main/webapp/WEB-INF/pages/
檔名 : hello.jsp

程式碼：
<html>
<body>
<h1>SpringMVC - Annotation :${message}</h1>
</body>
</html>

7.執行成功畫面：
URL = http://127.0.0.1:8081/SampleSpringMVC-2-3/

 


下一篇：
[JAVA_Spring]建立一個SpringMVC Annotation Project 2-3 (判斷Mobile Tablet Desktop) - Hello World





 













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