2020.1IDEA搭建SSM项目

相关开发工具版本介绍：

一.创建WEB项目

创建好之后结构图如下：（如果第一次创建web项目的话，可能要10m左右吧。）

第二步.BOM.xml文件的配置和其相关依赖及其插件的导入

配置BOM.xml：

<?xml version="1.0" encoding="UTF-8"?>

<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>4.0.0</modelVersion>

  <groupId>com.springmvc</groupId>
  <artifactId>hellobeijing</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>hellobeijing Maven Webapp</name>
  <!-- FIXME change it to the project's website -->
  <url>http://maven.apache.org</url>

  <properties>
    <!-- spring版本号 -->
    <spring.version>4.2.5.RELEASE</spring.version>
    <!-- mybatis版本号 -->
    <mybatis.version>3.2.4</mybatis.version>
    <!-- log4j日志文件管理包版本 -->
    <slf4j.version>1.6.6</slf4j.version>
    <log4j.version>1.2.12</log4j.version>
  </properties>
  <dependencies>
    <!-- spring核心包 -->
    <!-- springframe start -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>${
     spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>${
     spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-oxm</artifactId>
      <version>${
     spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>${
     spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>${
     spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${
     spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>${
     spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context-support</artifactId>
      <version>${
     spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>${
     spring.version}</version>
    </dependency>
    <!-- springframe end -->

    <!-- mybatis核心包 -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>${
     mybatis.version}</version>
    </dependency>
    <!-- mybatis/spring包 -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.2.2</version>
    </dependency>
    <!-- mysql驱动包 -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>8.0.15</version>
    </dependency>
    <!-- junit测试包 -->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
    <!-- jstl -->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.2.1-b03</version>
      <scope>provided</scope>
    </dependency>

    <!-- servlet -->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>servlet-api</artifactId>
      <version>2.5</version>
      <scope>provided</scope>
    </dependency>
    <!-- json数据 -->
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-core</artifactId>
      <version>2.7.1</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-annotations</artifactId>
      <version>2.7.1</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.7.1</version>
    </dependency>
    <dependency>
      <groupId>net.sf.json-lib</groupId>
      <artifactId>json-lib</artifactId>
      <version>2.4</version>
      <classifier>jdk15</classifier>
    </dependency>
    <!-- commons -->
    <dependency>
      <groupId>commons-lang</groupId>
      <artifactId>commons-lang</artifactId>
      <version>2.4</version>
    </dependency>
    <dependency>
      <groupId>commons-logging</groupId>
      <artifactId>commons-logging</artifactId>
      <version>1.1</version>
    </dependency>
    <dependency>
      <groupId>commons-pool</groupId>
      <artifactId>commons-pool</artifactId>
      <version>1.5.6</version>
    </dependency>
    <dependency>
      <groupId>commons-dbcp</groupId>
      <artifactId>commons-dbcp</artifactId>
      <version>1.4</version>
    </dependency>
    <dependency>
      <groupId>commons-beanutils</groupId>
      <artifactId>commons-beanutils</artifactId>
      <version>1.8.3</version>
    </dependency>
    <dependency>
      <groupId>commons-httpclient</groupId>
      <artifactId>commons-httpclient</artifactId>
      <version>3.1</version>
    </dependency>
    <dependency>
      <groupId>commons-collections</groupId>
      <artifactId>commons-collections</artifactId>
      <version>3.1</version>
    </dependency>
    <dependency>
      <groupId>commons-codec</groupId>
      <artifactId>commons-codec</artifactId>
      <version>1.9</version>
    </dependency>
    <dependency>
      <groupId>javax.annotation</groupId>
      <artifactId>jsr250-api</artifactId>
      <version>1.0</version>
    </dependency>

    <dependency>
      <groupId>net.sf.ezmorph</groupId>
      <artifactId>ezmorph</artifactId>
      <version>1.0.6</version>
    </dependency>
    <dependency>
      <groupId>javax.activation</groupId>
      <artifactId>activation</artifactId>
      <version>1.1</version>
    </dependency>
    <dependency>
      <groupId>taglibs</groupId>
      <artifactId>standard</artifactId>
      <version>1.1.2</version>
    </dependency>
    <!-- 日志文件管理包 -->
    <!-- log start -->
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>${
     log4j.version}</version>
    </dependency>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
      <version>${
     slf4j.version}</version>
    </dependency>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>${
     slf4j.version}</version>
    </dependency>
    <!--上传-->
    <dependency>
      <groupId>commons-fileupload</groupId>
      <artifactId>commons-fileupload</artifactId>
      <version>1.3.1</version>
    </dependency>
    <dependency>
      <groupId>commons-io</groupId>
      <artifactId>commons-io</artifactId>
      <version>2.4</version>
    </dependency>
    <!-- log end -->
  </dependencies>
  <build>
    <finalName>helloworld</finalName>
    <plugins>
      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.8.0</version>
        <configuration> <!--让编译器使用本地的13版本jdk-->
          <source>14</source>
          <target>14</target>
        </configuration>
      </plugin>
      <plugin>
        <groupId>org.mybatis.generator</groupId>
        <artifactId>mybatis-generator-maven-plugin</artifactId>
        <version>1.3.2</version>
        <configuration>
          <!--允许移动生成的文件-->
          <verbose>true</verbose>
          <!--允许覆盖生成的文件-->
          <overwrite>true</overwrite>
        </configuration>
        <dependencies>
          <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.15</version>
          </dependency>
        </dependencies>
      </plugin>
      <plugin>
        <artifactId>maven-clean-plugin</artifactId>
        <version>3.1.0</version>
      </plugin>
      <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
      <plugin>
        <artifactId>maven-resources-plugin</artifactId>
        <version>3.0.2</version>
      </plugin>
      <plugin>
        <artifactId>maven-surefire-plugin</artifactId>
        <version>2.22.1</version>
      </plugin>
      <plugin>
        <artifactId>maven-war-plugin</artifactId>
        <version>3.2.2</version>
      </plugin>
      <plugin>
        <artifactId>maven-install-plugin</artifactId>
        <version>2.5.2</version>
      </plugin>
      <plugin>
        <artifactId>maven-deploy-plugin</artifactId>
        <version>2.8.2</version>
      </plugin>
    </plugins>
  </build>
</project>

导入依赖和插件：

最终全部导入成功：

博主配置该步的时候遇见的一些问题总结：
依赖和插件不能自动下载：
1.IDEA设置没配置好
解决方案：https://i.csdn.net/#/uc/collection-list

2.setting.xml配置
导致原因：无法通过 Maven 中央仓库提供的坐标下载（也许是网络环境导致）
解决方案：更换镜像来源。
下面是楼主配置的setting.xml

<?xml version="1.0" encoding="UTF-8"?>
<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">
    
    <pluginGroups />
    <proxies />
    <servers />
    
    <localRepository>C:\Users\Administrator\.m2\repository</localRepository>
    
    <mirrors>  

		<!-- 阿里云镜像 -->
		<mirror> 
		<id>alimaven</id> 
		<name>aliyun maven</name> 
		<url>http://maven.aliyun.com/nexus/content/repositories/central/</url> 
		<mirrorOf>central</mirrorOf> 
		</mirror>

		<!-- junit镜像地址 -->
		<mirror> 
		<id>junit</id> 
		<name>junit Address/</name> 
		<url>http://jcenter.bintray.com/</url> 
		<mirrorOf>central</mirrorOf> 
		</mirror>
		
        <mirror>  
            <id>alimaven</id>  
            <name>aliyun maven</name>  
            <url>http://maven.aliyun.com/nexus/content/groups/public/</url>  
            <mirrorOf>central</mirrorOf>  
        </mirror>  
    </mirrors>  
  <profiles>  
    <profile>  
       <id>nexus</id>   
        <repositories>  
            <repository>  
                <id>nexus</id>  
                <name>local private nexus</name>  
                <url>http://maven.oschina.net/content/groups/public/</url>  
                <releases>  
                    <enabled>true</enabled>  
                </releases>  
                <snapshots>  
                    <enabled>false</enabled>  
                </snapshots>  
            </repository>  
        </repositories>  
          
        <pluginRepositories>  
            <pluginRepository>  
            <id>nexus</id>  
            <name>local private nexus</name>  
            <url>http://maven.oschina.net/content/groups/public/</url>  
            <releases>  
                <enabled>true</enabled>  
            </releases>  
            <snapshots>  
                <enabled>false</enabled>  
            </snapshots>  
            </pluginRepository>  
        </pluginRepositories>  
    </profile></profiles>  
	
	
    
</settings>

3.博主因为依赖和插件半天多下载不下来就中途重新下载了一次，从而出现了依赖和插件又一直下不下来。（由于之前第一次用moven下载依赖和插件，出现依赖和插件半天多下载不下来问题，通过百度就会重新配置IDEA和setting.xml文件，再重新下载依赖和插件）
具体体现：打开repository里面的看看里面的jar包文件是不是有些文件的名称好像是%update%还是%last%样式的文件名称（具体什么样式博主也不记得了），这就代表文件未完全下载。
解决方案：找到你的moven仓库，把里面的repository文件夹给删了，再重新下载依赖和插件

第三步.搭建Tomcat服务器

博主在搭建该项目时参考的是：https://www.cnblogs.com/toutou/p/ssm_spring.html#_label2
在这里我根据该博文配置，先配置MySQL数据库，再配置Tomcat服务器，最后在启动Tomcat服务器时发现：
Tomcat无法启动卡在Artifact is being deployed, please wait…；
然后博主就在网上百度了很久，最终还是没有解决该问题，但是大概了解到应该是哪里没有配置好。但是我就很纳闷我搭建struts2框架的时候motcat是没毛病的啊，怎么到了搭建SSM框架就出现motcat服务器的问题了，后面我就重新搭建了该SSM项目，就先配置Tomcat服务器，再配置MySQL数据库。并一一检查，最后完美运行成功。

Tomcat服务器搭建请参考：https://blog.csdn.net/qq_45486005/article/details/106866482

第四步.补全相关配置文件

1.最终项目结构展示

2.博主配置文件展示：
applicationContext.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:context="http://www.springframework.org/schema/context"
       xmlns:beans="http://www.springframework.org/schema/beans"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
         http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
         http://www.springframework.org/schema/context
         http://www.springframework.org/schema/context/spring-context-4.3.xsd
         http://www.springframework.org/schema/mvc
         http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd"  >

    <!-- ①：对com.springmvc包中的所有类进行扫描，以完成Bean创建和自动依赖注入的功能 -->
    <context:component-scan base-package="com.springmvc"/>
    <mvc:annotation-driven />
    <!-- 静态资源访问 -->
    <!--如果webapp下你新建了文件夹，想访问里面的静态资源，那么就要在这配置一下-->
    <mvc:resources location="/images/" mapping="/images/**"/>
    <mvc:resources location="/css/" mapping="/css/**"/>
    <mvc:resources location="/js/" mapping="/js/**"/>

    <!-- Configures the @Controller programming model
    <mvc:annotation-driven />-->
    <!-- ②：启动Spring MVC的注解功能，完成请求和注解POJO的映射 -->
    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
        <property name="messageConverters">
            <list>
                <ref bean="mappingJacksonHttpMessageConverter"/>
            </list>
        </property>
    </bean>

    <bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
        <property name="supportedMediaTypes">
            <list>
                <value>application/json;charset=UTF-8</value>
            </list>
        </property>
    </bean>

    <!-- 配置会话工厂SqlSessionFactory -->

    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 数据源 -->
        <property name="dataSource" ref="dataSource"/>
        <property name="mapperLocations" value="classpath:sqlmap/*Mapper.xml"/>
        <property name="typeAliasesPackage" value="com.springmvc.entity" />

    </bean>

    <!-- 在spring容器中配置mapper的扫描器产生的动态代理对象在spring的容器中自动注册，bean的id就是mapper类名（首字母小写）-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- 指定扫描包的路径，就是mapper接口的路径，多个包中间以 半角逗号隔开   -->
        <property name="basePackage" value="com.springmvc.dao"/>
        <!-- 配置sqlSessionFactoryBeanName -->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
    </bean>



    <!-- 配置视图解析器，把控制器的逻辑视频映射为真正的视图 -->
    <!-- /WEB-INF/jsp/start.jsp -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
        <property name="prefix" value="/WEB-INF/views/" />
        <property name="suffix" value=".jsp" />
    </bean>




    <!-- 配置dbcp数据库连接池 -->

    <!-- <context:property-placeholder location="classpath:db.properties"/> -->
    <!--数据库配置 -->
    <bean id = "propertyConfigurer" class = "org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations">
            <list>
                <value>classpath:jdbc.properties</value>
            </list>
        </property>

    </bean>

    <!-- 数据库连接池 -->
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <property name="driverClassName" value="${driver}"/>
        <property name="url" value="${url}"/>
        <property name="username" value="${username}"/>
        <property name="password" value="${password}"/>
        <property name="initialSize" value="1"/>
        <property name="maxActive" value="100"/>
        <property name="maxIdle" value="5"/>
        <property name="maxWait" value="80000"/>
    </bean>

    <!-- 配置事务管理器 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    </bean>

    <!-- 拦截器 -->
    <mvc:interceptors>
        <!-- 国际化操作拦截器 如果采用基于（请求/Session/Cookie）则必需配置 -->
        <bean class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor" />
    </mvc:interceptors>
    <!-- 定义无Controller的path<->view直接映射 -->
    <!-- <mvc:view-controller path="/" view-name="redirect:/" /> -->

</beans>

generator.properties(数据库配置文件请结合你的数据库修改)

driver=com.mysql.cj.jdbc.Driver
url=jdbc:mysql://localhost:3306/text?useUnicode=true&characterEncoding=utf-8&useSSL=false
username=root
password=****

#entity 包名和 java目录
modelPackage=com.springmvc.entity
modelProject=src/main/java
#sqlmap包名 和resources目录
sqlPackage=sqlmap
sqlProject=src/main/resources
#mapper包名和 java目录
mapperPackage=com.springmvc.dao
mapperProject=src/main/java

table=product_

generatorConfig.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
        "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">

<generatorConfiguration>
    <!--导入属性配置 -->
    <properties resource="generator.properties"/>

    <classPathEntry
            location="C:\Users\Administrator\.m2\repository\mysql\mysql-connector-java\8.0.15\mysql-connector-java-8.0.15.jar" />
    <context id="context1">
        <!-- 注释 -->
        <commentGenerator>
            <property name="suppressAllComments" value="true" /><!-- 是否取消注释 -->
            <property name="suppressDate" value="true" /> <!-- 是否生成注释代时间戳 -->
        </commentGenerator>

        <jdbcConnection driverClass="${driver}"
                        connectionURL="${url}"
                        userId="${username}"
                        password="${password}" />

        <!-- 类型转换 -->
        <javaTypeResolver>
            <!-- 是否使用bigDecimal， false可自动转化以下类型（Long, Integer, Short, etc.） -->
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>

        <javaModelGenerator targetPackage="${modelPackage}"
                            targetProject="${modelProject}" />
        <sqlMapGenerator targetPackage="${sqlPackage}" targetProject="${sqlProject}" />
        <javaClientGenerator targetPackage="${mapperPackage}"
                             targetProject="${mapperProject}" type="XMLMAPPER" />

        <!-- 如果需要通配所有表 直接用sql的通配符    %即可 -->
        <table schema="" tableName="${table}" enableCountByExample="false"
               enableUpdateByExample="false" enableDeleteByExample="false"
               enableSelectByExample="false" selectByExampleQueryId="false"/>
    </context>
</generatorConfiguration>

jdbc.properties(数据库配置文件请结合你的数据库修改)

driver=com.mysql.jdbc.Driver
#mytest为我本地的数据库名
url=jdbc:mysql://localhost:3306/text?useUnicode=true&characterEncoding=utf-8&useSSL=false
username=root
#下面输入自己数据库的密码
password=****
#定义初始连接数
initialSize=0
#定义最大连接数
maxActive=20
#定义最大空闲
maxIdle=20
#定义最小空闲
minIdle=1
#定义最长等待时间
maxWait=60000

log4j.properties

### set log levels ###
log4j.rootLogger = INFO,D


###输出到控制台###
log4j.logger.toConsole=debug,stdout
log4j.appender.stdout = org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target = System.out
log4j.appender.stdout.layout = org.apache.log4j.PatternLayout


log4j.appender.stdout.layout.ConversionPattern =%d{
     yyyy-MM-dd HH\:mm\:ss} [%5p] - %c -%F(%L) -%m%n

### 输出到日志文件 ###
##  其中File 可以采用绝对路径 亦可以采用相对路径 catalina.home 是tomcat目录  如果没有logs文件夹 将会报错  ##
##  更加倾向于将日志文件放在  tomcat的日志目录下${
     catalina.home}/logs/salesmanb2bError.log ##
##  绝对路径如：e:/salesmanb2bError.log ##
log4j.logger.daily=INFO,D
log4j.appender.D = org.apache.log4j.DailyRollingFileAppender
log4j.appender.D.File = ${
     catalina.home}/logs/helloworld/helloworld.log
log4j.appender.D.Append = true
log4j.appender.D.Threshold = INFO
log4j.appender.D.layout = org.apache.log4j.PatternLayout
log4j.appender.D.layout.ConversionPattern =%d{
     yyyy-MM-dd HH\:mm\:ss} [%5p] - %c -%F(%L) -%m%n


##log4j.logger.org.apache.ibatis=debug,stdout
##log4j.logger.java.sql=debug,stdout

第五步.MySQL数据库连接
第一步IDEA连接数据库:
具体请参考：https://blog.csdn.net/qq_45486005/article/details/106701307
最终结果如下：

导入配置表：点击运行下面的mybatis-generator

运行完毕好出现红色方框里面的3个配置文件。（1.注意多次执行mybatis-generator时，
该步的applicationContext.xml文件会出现重复，请注意修改，博主是每次执行前都会把sqlmap文件夹的文件给删掉
2.在启动该步可能报错，请参考）

配置文件配置好之后再启动一下Tomcat服务器检查一下Tomcat服务器是否能正常启动；