SSM项目环境搭建以及集成Mybatis-plus

1. 导入依赖

<properties>
    <spring.version>5.0.2.RELEASEspring.version>
    <slf4j.version>1.6.6slf4j.version>
    <log4j.version>1.2.12log4j.version>
    <shiro.version>1.2.3shiro.version>
    <mysql.version>8.0.27mysql.version>
    <mybatis.version>3.5.5mybatis.version>
    <mybatis-plus.version>3.5.0mybatis-plus.version>
properties>
<dependencies>
    <dependency>
        <groupId>com.baomidougroupId>
        <artifactId>mybatis-plusartifactId>
        <version>${mybatis-plus.version}version>
    dependency>
    <dependency>
        <groupId>com.baomidougroupId>
        <artifactId>mybatis-plus-generatorartifactId>
        <version>3.5.1version>
    dependency>
    <dependency>
        <groupId>org.freemarkergroupId>
        <artifactId>freemarkerartifactId>
        <version>2.3.28version>
    dependency>
    
    <dependency>
        <groupId>org.aspectjgroupId>
        <artifactId>aspectjweaverartifactId>
        <version>1.6.8version>
    dependency>
    <dependency>
        <groupId>org.springframeworkgroupId>
        <artifactId>spring-aopartifactId>
        <version>${spring.version}version>
    dependency>
    <dependency>
        <groupId>org.springframeworkgroupId>
        <artifactId>spring-contextartifactId>
        <version>${spring.version}version>
    dependency>
    <dependency>
        <groupId>org.springframeworkgroupId>
        <artifactId>spring-context-supportartifactId>
        <version>${spring.version}version>
    dependency>
    <dependency>
        <groupId>org.springframeworkgroupId>
        <artifactId>spring-webartifactId>
        <version>${spring.version}version>
    dependency>
    <dependency>
        <groupId>org.springframeworkgroupId>
        <artifactId>spring-ormartifactId>
        <version>${spring.version}version>
    dependency>
    <dependency>
        <groupId>org.springframeworkgroupId>
        <artifactId>spring-beansartifactId>
        <version>${spring.version}version>
    dependency>
    <dependency>
        <groupId>org.springframeworkgroupId>
        <artifactId>spring-coreartifactId>
        <version>${spring.version}version>
    dependency>
    <dependency>
        <groupId>org.springframeworkgroupId>
        <artifactId>spring-testartifactId>

        <version>${spring.version}version>
    dependency>
    <dependency>
        <groupId>org.springframeworkgroupId>
        <artifactId>spring-webmvcartifactId>
        <version>${spring.version}version>
    dependency>
    <dependency>
        <groupId>org.springframeworkgroupId>
        <artifactId>spring-txartifactId>
        <version>${spring.version}version>
    dependency>
    <dependency>
        <groupId>junitgroupId>
        <artifactId>junitartifactId>
        <version>4.12version>
        <scope>testscope>
    dependency>
    <dependency>
        <groupId>mysqlgroupId>
        <artifactId>mysql-connector-javaartifactId>
        <version>${mysql.version}version>
    dependency>
    <dependency>
        <groupId>javax.servletgroupId>
        <artifactId>servlet-apiartifactId>
        <version>2.5version>
        <scope>providedscope>
    dependency>
    <dependency>
        <groupId>javax.servlet.jspgroupId>
        <artifactId>jsp-apiartifactId>
        <version>2.0version>
        <scope>providedscope>
    dependency>
    <dependency>
        <groupId>jstlgroupId>

        <artifactId>jstlartifactId>
        <version>1.2version>
    dependency>
    
    <dependency>
        <groupId>log4jgroupId>
        <artifactId>log4jartifactId>
        <version>${log4j.version}version>
    dependency>
    <dependency>
        <groupId>org.slf4jgroupId>
        <artifactId>slf4j-apiartifactId>
        <version>${slf4j.version}version>
    dependency>
    <dependency>
        <groupId>org.slf4jgroupId>
        <artifactId>slf4j-log4j12artifactId>
        <version>${slf4j.version}version>
    dependency>
    
    <dependency>
        <groupId>org.mybatisgroupId>
        <artifactId>mybatisartifactId>
        <version>${mybatis.version}version>
    dependency>
    <dependency>
        <groupId>org.mybatisgroupId>
        <artifactId>mybatis-springartifactId>
        <version>2.0.0version>
    dependency>
    <dependency>
        <groupId>com.alibabagroupId>
        <artifactId>druidartifactId>
        <version>1.0.9version>
    dependency>
dependencies>

2. 编写代码生成器（Mybatis-plus官网有配置）

public class CodeGenerator {

    public static void main(String[] args) {
        String projectPath = System.getProperty("user.dir");
        String source = projectPath + "/src/main/java/";
        String resources = projectPath + "/src/main/resources/com/kingo/mapper";
        FastAutoGenerator.create("jdbc:mysql:///scheduling?characterEncoding=utf-8", "root", "123456")
                .globalConfig(builder -> {
                    builder.author("Kingo") // 设置作者
//                            .enableSwagger() // 开启 swagger 模式
//                            .fileOverride() // 覆盖已生成文件
                            .outputDir(source); // 指定输出目录
                })
                .packageConfig(builder -> {
                    builder.parent("com") // 设置父包名
                            .moduleName("kingo") // 设置父包模块名
                            .pathInfo(Collections.singletonMap(OutputFile.mapperXml, resources)); // 设置mapperXml生成路径
                })
                .strategyConfig(builder -> {
                    builder.addInclude("account"); // 设置需要生成的表名
//                            .addTablePrefix("t_", "c_"); // 设置过滤表前缀
                })
                .templateEngine(new FreemarkerTemplateEngine()) // 使用Freemarker引擎模板，默认的是Velocity引擎模板
                .execute();
    }
}

3. 运行生成代码后，目录结构如下：

4. 编写Spring配置文件

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
         http://www.springframework.org/schema/beans/spring-beans.xsd
         http://www.springframework.org/schema/tx
         http://www.springframework.org/schema/tx/spring-tx.xsd
         http://www.springframework.org/schema/aop
         http://www.springframework.org/schema/aop/spring-aop.xsd
         http://www.springframework.org/schema/context
         http://www.springframework.org/schema/context/spring-context.xsd">
    
    <context:component-scan base-package="com.kingo">
        
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    context:component-scan>

    <context:property-placeholder location="classpath:jdbc.properties" />
    
    
    
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="driverClassName" value="${jdbc.driver}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    bean>

    
    

    
    <bean id="sqlSessionFactory" class="com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
    bean>

    
    <bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.kingo.mapper"/>
    bean>

    
    
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    bean>

    
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="find*" read-only="true"/>
            <tx:method name="*" isolation="DEFAULT"/>
        tx:attributes>
    tx:advice>

    
    <aop:config>
        <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.kingo.service.impl.*ServiceImpl.*(..))"/>
    aop:config>
beans>

5. 编写SpringMVC配置文件

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

    
    <context:component-scan base-package="com.kingo.controller">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" />
    context:component-scan>

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

    
    <mvc:resources location="/css/" mapping="/css/**" />
    <mvc:resources location="/images/" mapping="/images/**" />
    <mvc:resources location="/js/" mapping="/js/**" />

    
    <mvc:annotation-driven/>

beans>

6. 配置web.xml

DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  
  <display-name>Archetype Created Web Applicationdisplay-name>

  
  <context-param>
    <param-name>contextConfigLocationparam-name>
    <param-value>classpath:applicationContext.xmlparam-value>
  context-param>
  
  
  <filter>
    <filter-name>characterEncodingFilterfilter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class>
    <init-param>
      <param-name>encodingparam-name>
      <param-value>UTF-8param-value>
    init-param>
  filter>
  <filter-mapping>
    <filter-name>characterEncodingFilterfilter-name>
    <url-pattern>/*url-pattern>
  filter-mapping>
  
  
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class>
  listener>
  
  
  <servlet>
    <servlet-name>dispatcherServletservlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
    
    <init-param>
      <param-name>contextConfigLocationparam-name>
      <param-value>classpath:springmvc.xmlparam-value>
    init-param>
    
    <load-on-startup>1load-on-startup>
  servlet>
  <servlet-mapping>
    <servlet-name>dispatcherServletservlet-name>
    <url-pattern>/url-pattern>
  servlet-mapping>
  
web-app>

至此，SSM集成Mybatis-plus的环境以搭建完毕，整体项目结构如下图

Web项目启动时，ContextLoaderListener 监听器会加载Spring配置文件，DispatcherServlet 会加载 SpringMVC 配置文件。

另外，在log4j.properties配置打印sql日志

## Set root category priority to INFO and its only appender to CONSOLE.
##log4j.rootCategory=INFO, CONSOLE            debug   info   warn error fatal
#log4j.rootCategory=info, CONSOLE, LOGFILE
#
## Set the enterprise logger category to FATAL and its only appender to CONSOLE.
#log4j.logger.org.apache.axis.enterprise=FATAL, CONSOLE
#
## CONSOLE is set to be a ConsoleAppender using a PatternLayout.
#log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
#log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
#log4j.appender.CONSOLE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m\n
#
## LOGFILE is set to be a File appender using a PatternLayout.
#log4j.appender.LOGFILE=org.apache.log4j.FileAppender
#log4j.appender.LOGFILE.File=d:\axis.log
#log4j.appender.LOGFILE.Append=true
#log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
#log4j.appender.LOGFILE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m\n

log4j.rootLogger=DEBUG, Console 
#Console
log4j.appender.Console=org.apache.log4j.ConsoleAppender 
log4j.appender.Console.layout=org.apache.log4j.PatternLayout 
log4j.appender.Console.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n 

log4j.logger.java.sql.ResultSet=INFO 
log4j.logger.org.apache=INFO 
log4j.logger.java.sql.Connection=DEBUG 
log4j.logger.java.sql.Statement=DEBUG 
log4j.logger.java.sql.PreparedStatement=DEBUG