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SSM整合三———整合SpringMVC

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6.整合SpringMVC

6.1导入jar包

6.2配置web.xml

注意：由于我用的spring版本是5.1.2，所以jackson的版本应高于2.4.2，否则会出现版本冲突。

  1. 通过web.xml来启动spring，加载applicationContext.xml
  2. 通过web.xml来启动spring，加载spring-mvc.xml
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<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" 
    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_3_0.xsd">
  <display-name>06.mybatis-spring-springmvc</display-name>    
  
  <!-- 404错误拦截 -->
  <error-page>
    <error-code>404</error-code>
    <location>/error404.jsp</location>
  </error-page>
  <!-- 500错误拦截 -->
  <error-page>
    <error-code>500</error-code>
    <location>/error500.jsp</location>
  </error-page>
  
 
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
 <!-- 加载spring容器 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
<!--         <param-value>WEB-INF/classes/spring/applicationContext-*.xml</param-value> -->
    </context-param>
    
  <!-- 配置前端控制器  启动SpringMVC-->
  <servlet>
      <servlet-name>DispatcherServle</servlet-name>
      <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
      <init-param>
          <!-- ContextconfigLocation配置springmvc加载的配置文件
          适配器、处理映射器等
           -->
          <param-name>contextConfigLocation</param-name>
          <param-value>classpath:spring-mvc.xml</param-value>
 	 </init-param>
  </servlet>
  <servlet-mapping>
      <servlet-name>DispatcherServle</servlet-name>
      <!-- 1、.action访问以.action结尾的  由DispatcherServlet进行解析
           2、/,所有访问都由DispatcherServlet进行解析
       -->
      <url-pattern>/</url-pattern>
  </servlet-mapping>
    
  <!-- 解决post乱码问题的过滤器 -->
  <filter>
      <filter-name>CharacterEncodingFilter</filter-name>
      <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
      <init-param>
          <param-name>encoding</param-name>
          <param-value>utf-8</param-value>
      </init-param>
  </filter>
  <filter-mapping>
      <filter-name>CharacterEncodingFilter</filter-name>
      <url-pattern>/*</url-pattern>
  </filter-mapping>
  <welcome-file-list>
    <welcome-file>welcome.jsp</welcome-file>
  </welcome-file-list>
  
  
    
</web-app>
6.3配置spring-mvc.xml
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<?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:mvc="http://www.springframework.org/schema/mvc"
	xmlns:p="http://www.springframework.org/schema/p"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
	http://www.springframework.org/schema/beans/spring-beans.xsd
	http://www.springframework.org/schema/context
    https://www.springframework.org/schema/context/spring-context.xsd
	http://www.springframework.org/schema/mvc
	http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!-- 扫描controller包下所有标注@Controller的组件 -->
		<context:component-scan base-package="net.zzqd.ssm.controller" />
<!-- 		mvc注解驱动 -->
	<mvc:annotation-driven />		
<!-- 	视图解析器 -->
	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!--  	浅醉 -->
	<property name="prefix" value="/WEB-INF/jsp/"/>
<!-- 	后缀 -->
	<property name="suffix" value=".jsp"/>
	</bean>
<!-- 		静态资源 解析 -->
	<mvc:resources location="/script/" mapping="/script/**"/>
	<mvc:resources location="/css/" mapping="/css/**"/>
	<mvc:resources location="/images/" mapping="/images/**"/>
	
</beans>
6.3编写Controller

过程：通过web.xml中Listener和servlet加载spring容器以及启动springMVC，来读取applicationContext.xml文件和spring-mvc.xml文件，然后spring-mvc中启动mvc注解，以及视图解析器和Controller扫描

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package net.zzqd.ssm.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
@RequestMapping("/customer")
public class CustomerController {
	
	@RequestMapping("/test")
	public String test()
	{
		return "test";
	}
}
6.4编写页面
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<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!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>Insert title here</title>
</head>
<body>
	<h1>测试springmvc是否可用</h1>
</body>
</html>
6.5访问结果