【SSM分布式架构电商项目-10】搭建前台系统

所使用的技术

后台技术： Spring SpringMVC Mybatis(不用)？
前台技术：html、CSS、JS
如果不使用Mybatis，商品的数据从何而来？ – 来源于Mysql数据库
获取数据的途径：
1、 从JDBC获取
a) 优点
i. 直接，获取的途径较短，简单
b) 缺点
i. 对后台系统团队而言，数据不安全（只要开放的账户是只读的账户即可）
ii. 前端系统团队需要有学习的成本，才能使用数据库
iii. 依赖、耦合度太高，后端团队将数据库结构修改，那么其他团队必须跟着修改逻辑，才能使用
iv. 直接走数据库查询，无法添加缓存逻辑
2、 通过后台系统接口获取
a) 优点
i. 耦合度降低，后端团队只要保证接口的返回数据格式不变化，其他团队就无需升级
ii. 数据安全
iii. 前端团队无需了解学习后端团队的底层数据库结构
iv. 后端团队可以在接口处添加缓存逻辑
b) 缺点
i. 获取的路径较长（不是真正的缺点）

创建taotao-web

导入依赖

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0modelVersion>
  <parent>
        <groupId>com.taotao.parentgroupId>
        <artifactId>taotao-parentartifactId>
        <version>0.0.1-SNAPSHOTversion>
parent>
  <groupId>com.taotao.webgroupId>
  <artifactId>taotao-webartifactId>
  <version>0.0.1-SNAPSHOTversion>
  <packaging>warpackaging>


<dependencies>
        <dependency>
              <groupId>com.taotao-commongroupId>
             <artifactId>taotao-commonartifactId>
            <version>0.0.1-SNAPSHOTversion>
        dependency>

        
        <dependency>
            <groupId>junitgroupId>
            <artifactId>junitartifactId>
            <scope>testscope>
        dependency>

        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-webmvcartifactId>
        dependency>

        <dependency>
            <groupId>org.slf4jgroupId>
            <artifactId>slf4j-log4j12artifactId>
        dependency>

        
        <dependency>
            <groupId>com.fasterxml.jackson.coregroupId>
            <artifactId>jackson-databindartifactId>
        dependency>

        
        <dependency>
            <groupId>jstlgroupId>
            <artifactId>jstlartifactId>
        dependency>
        <dependency>
            <groupId>javax.servletgroupId>
            <artifactId>servlet-apiartifactId>
            <scope>providedscope>
        dependency>
        <dependency>
            <groupId>javax.servletgroupId>
            <artifactId>jsp-apiartifactId>
            <scope>providedscope>
        dependency>

        
        <dependency>
            <groupId>org.apache.commonsgroupId>
            <artifactId>commons-lang3artifactId>
        dependency>
        <dependency>
            <groupId>org.apache.commonsgroupId>
            <artifactId>commons-ioartifactId>
        dependency>
    dependencies>


    <build>
        <plugins>
            
            <plugin>
                <groupId>org.apache.tomcat.mavengroupId>
                <artifactId>tomcat7-maven-pluginartifactId>
                <configuration>
                    <port>8082port>
                    <path>/path>
                configuration>
            plugin>
        plugins>
    build>
project>

Web.xml

<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>taotao-webdisplay-name>

    <context-param>
        <param-name>contextConfigLocationparam-name>
        <param-value>classpath:spring/applicationContext*.xmlparam-value>
    context-param>

    
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class>
    listener>

    
    <filter>
        <filter-name>encodingFilterfilter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class>
        <init-param>
            <param-name>encodingparam-name>
            <param-value>UTF8param-value>
        init-param>
    filter>
    <filter-mapping>
        <filter-name>encodingFilterfilter-name>
        <url-pattern>/*url-pattern>
    filter-mapping>

    
    <servlet>
        <servlet-name>taotao-webservlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
        <init-param>
            <param-name>contextConfigLocationparam-name>
            <param-value>classpath:spring/taotao-web-servlet.xmlparam-value>
        init-param>
        <load-on-startup>1load-on-startup>
    servlet>

    <servlet-mapping>
        <servlet-name>taotao-webservlet-name>
        
        <url-pattern>*.htmlurl-pattern>
    servlet-mapping>

    <welcome-file-list>
        <welcome-file>index.jspwelcome-file>
    welcome-file-list>

web-app>

Spring和SpringMVC配置文件

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
    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-4.0.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
    http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">

    
    <bean
        class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        
        
        <property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_OVERRIDE" />
        
        <property name="ignoreResourceNotFound" value="true" />
        
        <property name="locations">
            <list>
                <value>classpath:env.propertiesvalue>
            list>
        property>
    bean>

    
    <context:component-scan base-package="com.taotao"/>

beans>

<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-4.0.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">

    
    <mvc:annotation-driven/>

    
    <context:component-scan base-package="com.taotao.web.controller"/>

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

beans>

导入静态文件

编写IndexController

package com.taotao.web.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;


@RequestMapping("index")
@Controller
public class IndexController {


    /**
     * 首页
     * 
     * @return
     */
    @RequestMapping(method = RequestMethod.GET)
    public ModelAndView index() {
        ModelAndView mv = new ModelAndView("index");
        return mv;
    }

}

配置hosts和nginx

运行测试发现：
www.taotao.com会找不到页面：

www.taotao.com/index.html才找得到页面

因为输入www.taotao.com，默认找的是index.jsp,不满足*.html的规则。

修改后重新测试：