上次寫到將Spring和Mybatis整合到了一起，這次便將SpringMVC整合進去，SpringMVC只負責controller和頁面之間的跳轉，也就是隻負責和使用者互動

3.2 整合SpringMVC框架

3.2.1 建立spring-mvc.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: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-3.1.xsd
                        http://www.springframework.org/schema/context
                        http://www.springframework.org/schema/context/spring-context-3.1.xsd
                        http://www.springframework.org/schema/mvc
                        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd"
 
>
    <!-- 自動掃描該包，使SpringMVC認為包下用了@controller註解的類是控制器 -->
    <context:component-scan base-package="com.test.sjz.controller" />
    <!--避免IE執行AJAX時，返回JSON出現下載檔案 -->
    <bean id="mappingJacksonHttpMessageConverter"
          class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"
 
>
        <property name="supportedMediaTypes">
            <list>
                <value>text/html;charset=UTF-8</value>
            </list>
        </property>
    </bean>
    <!-- 啟動SpringMVC的註解功能，完成請求和註解POJO的對映 -->
    <bean
            class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
        <property name="messageConverters">
            <list>
                <ref bean="mappingJacksonHttpMessageConverter" /> <!-- JSON轉換器 -->
            </list>
        </property>
    </bean>
    <!-- 定義跳轉的檔案的前後綴 ，檢視模式配置-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!-- 返回地址字首與字尾 -->
        <property name="prefix" value="/WEB-INF/views/" />
        <property name="suffix" value=".jsp" />
    </bean>

    <!-- 配置檔案上傳，如果沒有使用檔案上傳可以不用配置，當然如果不配，那麼配置檔案中也不必引入上傳元件包 -->
    <bean id="multipartResolver"
          class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <!-- 預設編碼 -->
        <property name="defaultEncoding" value="utf-8" />
        <!-- 檔案大小最大值 -->
        <property name="maxUploadSize" value="10485760000" />
        <!-- 記憶體中的最大值 -->
        <property name="maxInMemorySize" value="40960" />
    </bean>
</beans>

3.2.2 在web.xml中新增配置

<?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_3_0.xsd"
         version="3.0">
  <display-name>Archetype Created Web Application</display-name>
  <!-- Spring和mybatis的配置檔案 -->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:spring-mybatis.xml</param-value>
  </context-param>
  <!-- 編碼過濾器 -->
  <filter>
    <filter-name>encodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <async-supported>true</async-supported>
    <init-param>
      <param-name>encoding</param-name>
      <param-value>UTF-8</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>encodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
  <!-- Spring監聽器 -->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <!-- 防止Spring記憶體溢位監聽器 -->
  <listener>
    <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
  </listener>

  <!-- Spring MVC servlet -->
  <servlet>
    <servlet-name>SpringMVC</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:spring-mvc.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
    <async-supported>true</async-supported>
  </servlet>
  <servlet-mapping>
    <servlet-name>SpringMVC</servlet-name>
    <!-- 此處可以可以配置成*.do，對應struts的字尾習慣 -->
    <url-pattern>/</url-pattern>
  </servlet-mapping>
  <welcome-file-list>
    <welcome-file>/index.jsp</welcome-file>
  </welcome-file-list>

</web-app>

3.3 進行web測試

3.3.1 建立controller類

package com.test.sjz.controller;

import com.test.sjz.entity.NewsWithBLOBs;
import com.test.sjz.service.NewsService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;

/**
 * @author 單繼重
 * @since 2017/9/1 13:43
 */

@Controller
@RequestMapping(value = "/news")
public class NewsController {

    @Autowired
    private NewsService newsService;

    @RequestMapping(value = "/query",method = RequestMethod.GET)
    public String queryById(@RequestParam("id") int id, Model model){
        NewsWithBLOBs newsWithBLOBs = newsService.queryById(id);
        model.addAttribute("news",newsWithBLOBs);
        return "index";
    }
}

註解不要忘記，靠註解來宣告此類是controller以及配置對應URL

3.3.2 建立JSP頁面

index.jsp

<%--
  Created by IntelliJ IDEA.
  User: 卓音
  Date: 2017/9/1
  Time: 13:52
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
    <h1>${news.title}</h1>
</body>
</html>

至此，配置Tomcat並啟動，在位址列輸入相應地址，頁面如果正常回顯相應資訊，便說明框架整合成功