SSM项目搭建

一、基本环境搭建

JDK：1.8
https://blog.csdn.net/qq_38509173/article/details/124678406
MySQL：5.7
https://blog.csdn.net/qq_38509173/article/details/108623510
TOMCAT：9.0
https://blog.csdn.net/qq_38509173/article/details/124717161
开发工具：IDEA

1、新建maven项目

新建maven项目，并添加web支持。




显示这样的颜色，说明项目成功！

2、导入依赖

在pom.xml文件中添加依赖。一个SSM项目需要的基础依赖如下：
junit、数据库驱动、连接池、servlet、jsp、mybatis、mybatis-spring、spring 等。

maven仓库地址：https://mvnrepository.com/




将依赖copy到pom.xml

然后根据以上步骤，以此引入其他依赖。

注：mybatis用的3.5以上版本，且spring是5.0以上版本，则mybatis-spring要2.*版本的。

	<dependencies>
        
        
        <dependency>
            <groupId>junitgroupId>
            <artifactId>junitartifactId>
            <version>4.12version>
            <scope>testscope>
        dependency>
        
        
        <dependency>
            <groupId>mysqlgroupId>
            <artifactId>mysql-connector-javaartifactId>
            <version>8.0.16version>
        dependency>
        
        
        <dependency>
            <groupId>com.mchangegroupId>
            <artifactId>c3p0artifactId>
            <version>0.9.5.2version>
        dependency>
        
        
        <dependency>
            <groupId>javax.servletgroupId>
            <artifactId>servlet-apiartifactId>
            <version>2.5version>
            <scope>providedscope>
        dependency>
        
        <dependency>
            <groupId>javax.servlet.jspgroupId>
            <artifactId>jsp-apiartifactId>
            <version>2.1version>
            <scope>providedscope>
        dependency>
        
        <dependency>
            <groupId>javax.servletgroupId>
            <artifactId>jstlartifactId>
            <version>1.2version>
        dependency>
        
        
        <dependency>
            <groupId>org.mybatisgroupId>
            <artifactId>mybatisartifactId>
            <version>3.5.6version>
        dependency>
        
        <dependency>
            <groupId>org.mybatisgroupId>
            <artifactId>mybatis-springartifactId>
            <version>2.0.6version>
        dependency>
        
        
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-webmvcartifactId>
            <version>5.3.9version>
        dependency>
        
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-jdbcartifactId>
            <version>5.3.9version>
        dependency>

    dependencies>

3、maven资源过滤设置

<build>
   <resources>
       <resource>
           <directory>src/main/javadirectory>
           <includes>
               <include>**/*.propertiesinclude>
               <include>**/*.xmlinclude>
           includes>
           <filtering>falsefiltering>
       resource>
       <resource>
           <directory>src/main/resourcesdirectory>
           <includes>
               <include>**/*.propertiesinclude>
               <include>**/*.xmlinclude>
           includes>
           <filtering>falsefiltering>
       resource>
   resources>
build>

注：进入File | Settings | Build, Execution, Deployment | Build Tools | Maven，设置maven home directory。

然后User settings file和Local repository也建议不要是默认的C盘下，分别调整为IDEA路径下的plugins下的maven，以及在其下建立一个repository文件夹，作为maven依赖包的下载位置，参考如下图：

完成后点击应用，确定。
改变了maven仓库的路径后，需要重新下载依赖包，如下图所示：

4、建立基础包结构

5、配置框架

mybatis-config.xml

DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>

configuration>

applicationContext.xml

<beans xmlns="http://www.springframework.org/schema/beans"
       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.xsd">

beans>

然后applicationContext.xml文件上方会有提示需配置新建

默认，直接点击OK

database.properties

# 如果使用的MYSQL是8.0+，还需增加一个时区的配置  &serverTimezone=Asia/Shanghai
dbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/gwShopping?useSSL=true&useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=admin

二、连接数据库

测试连接成功！

三、添加web前端页面文件

web.xml

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">

    
    <servlet>
        <servlet-name>DispatcherServletservlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
        <init-param>
            <param-name>contextConfigLocationparam-name>
            
            <param-value>classpath:applicationContext.xmlparam-value>
        init-param>
        <load-on-startup>1load-on-startup>
    servlet>
    <servlet-mapping>
        <servlet-name>DispatcherServletservlet-name>
        <url-pattern>/url-pattern>
    servlet-mapping>

    
    <filter>
        <filter-name>encodingFilterfilter-name>
        <filter-class>
            org.springframework.web.filter.CharacterEncodingFilter
        filter-class>
        <init-param>
            <param-name>encodingparam-name>
            <param-value>utf-8param-value>
        init-param>
    filter>
    <filter-mapping>
        <filter-name>encodingFilterfilter-name>
        <url-pattern>/*url-pattern>
    filter-mapping>

    
    <session-config>
        <session-timeout>15session-timeout>
    session-config>
    
web-app>