1.1 Directory Structure

Spring+Mybatis

1.2 Dependent Collation

<! -- https://mvnrepository.com/artifact/com.github.pagehelper/pagehelper -->
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper</artifactId>
            <version>5.2.1</version>
        </dependency>

        <! -- junit5 -->
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-engine</artifactId>
            <version>5.7.2</version>
            <scope>test</scope>
        </dependency>

        <! -- Spring test functionality -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>5.3.8</version>
        </dependency>

        <! -- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.6</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.3.8</version>
        </dependency>

        <! -- SpringMVC -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.3.8</version>
        </dependency>

        <! -- Spring Persistence layer dependencies -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>5.3.8</version>
        </dependency>

        <! -- logback -->
        <dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-classic</artifactId>
            <version>1.2.3</version>
        </dependency>

        <! -- ServletAPI -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>4.0.1</version>
            <scope>provided</scope>
        </dependency>

        <! -- Spring5 and Thymeleaf integration package
        <dependency>
            <groupId>org.thymeleaf</groupId>
            <artifactId>thymeleaf-spring5</artifactId>
            <version>3.0.12. RELEASE</version>
        </dependency>

        <! Mybatis core -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.7</version>
        </dependency>

        <! -- MySQL driver -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.25</version>
        </dependency>

        <! Connection pool data source -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.0.16</version>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.20</version>
        </dependency>
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Configure a JDBC 1.3. The properties

jdbc.url=JDBC: mysql: / / 47.106.207.254:3306 / empdb
jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.username=* * * * *
jdbc.password=* * * * * *
jdbc.filters=stat
jdbc.initialSize=2
jdbc.maxActive=300	
jdbc.maxWait=60000
jdbc.timeBetweenEvictionRunsMillis=60000
jdbc.minEvictableIdleTimeMillis=300000
jdbc.validationQuery=SELECT 1
jdbc.testWhileIdle=true
jdbc.testOnBorrow=false
jdbc.testOnReturn=false
jdbc.poolPreparedStatements=false
jdbc.maxPoolPreparedStatementPerConnectionSize=200
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1.4 to join logback. XML

      
<configuration debug="true">
    <! -- Specify log output location -->
    <appender name="STDOUT"
              class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <! -- Log output format -->
            <! Time, log level, thread name, class to print logs, log body content, newline -->
            <pattern>[%d{HH:mm:ss.SSS}] [%-5level] [%thread] [%logger] [%msg]%n</pattern>
        </encoder>
    </appender>

    <! -- Set the global log level. The log levels are DEBUG, INFO, WARN, and ERROR -->.
    <! -- Specifies that only logs at the current and later levels are printed at any log level. -->
    <root level="INFO">
        <! -- Specify the appender to print logs. Here we reference the previously configured appender with "STDOUT".
        <appender-ref ref="STDOUT"/>
    </root>
    <! -- Specify the local log level according to special requirements -->
<! -- <logger name="mapper.EmpMapper" level="DEBUG"/>-->
</configuration>
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1.5 introduced spring – context. The XML

      
<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:mybatis-spring="http://mybatis.org/schema/mybatis-spring"
       xmlns:tx="http://www.springframework.org/schema/tx"
       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://mybatis.org/schema/mybatis-spring http://mybatis.org/schema/mybatis-spring.xsd http://www.springframework.org/schema/tx https://www.springframework.org/schema/tx/spring-tx.xsd">

    <context:annotation-config></context:annotation-config>

    <! -- Configure automatic scan packets -->
    <context:component-scan base-package="com.model"/>
    <context:component-scan base-package="com.mapper"/>
    <context:component-scan base-package="com.services"/>
    
    <! -- Configure a scanner with Mapper interface type -->
    <mybatis-spring:scan base-package="com.mapper"/>

    <! Import external properties file -->
    <context:property-placeholder location="classpath:mysql-jdbc.properties"/>

    
    <! -- Configure data source -->
    <bean id="druidDataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="url" value="${jdbc.url}"/>
        <property name="driverClassName" value="${jdbc.driver}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
        <property name="filters" value="${jdbc.filters}"/>
        <property name="initialSize" value="${jdbc.initialSize}"/>
        <property name="maxActive" value="${jdbc.maxActive}"/>
        <property name="maxWait" value="${jdbc.maxWait}"/>
        <property name="timeBetweenEvictionRunsMillis" value="${jdbc.timeBetweenEvictionRunsMillis}"/>
        <property name="minEvictableIdleTimeMillis" value="${jdbc.minEvictableIdleTimeMillis}"/>
        <property name="validationQuery" value="${jdbc.validationQuery}"/>
        <property name="testWhileIdle" value="${jdbc.testWhileIdle}"/>
        <property name="testOnBorrow" value="${jdbc.testOnBorrow}"/>
        <property name="testOnReturn" value="${jdbc.testOnReturn}"/>
        <property name="poolPreparedStatements" value="${jdbc.poolPreparedStatements}"/>
        <property name="maxPoolPreparedStatementPerConnectionSize"
                  value="${jdbc.maxPoolPreparedStatementPerConnectionSize}"/>
    </bean>
    

    <! -- Configure JdbcTemplate -->
    <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
        <! Assemble data source -->
        <property name="dataSource" ref="druidDataSource"/>
    </bean>
    
        <! Create a transaction manager -->
    <bean id="TransactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <! Inject data source -->
        <property name="dataSource" ref="druidDataSource"></property>
    </bean>

    <! -- Register transaction manager driver -->
    <tx:annotation-driven transaction-manager="TransactionManager"/>

    
    <! SqlSessionFactoryBean -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <! -- Discard Mybatis global configuration file and use the Configuration property -->
        <property name="configuration">
            <bean class="org.apache.ibatis.session.Configuration">
                <property name="mapUnderscoreToCamelCase" value="true"/>
            </bean>
        </property>
        <! TypeAliasesPackage: typeAliasesPackage: typeAliasesPackage
        <property name="typeAliasesPackage" value="com.model"/>
        <! Mapper configuration file location -->
        <property name="mapperLocations" value="classpath:com/mapper/*Mapper.xml"/>
        <! Assemble data source -->
        <property name="dataSource" ref="druidDataSource"/>
    </bean>
</beans>
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1.6 introduction of mybatis config. XML

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

    <! -- Mybatis Global Configuration -->
    <settings>
        <! Map database table fields to camel-named Java entity class attributes
        <! Mysql > select * from db;
        <! -- Java entity class attributes: Camel name in lower case -->
        <setting name="mapUnderscoreToCamelCase" value="true"/>
    </settings>

</configuration>
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1.7 Model Establishment

Entity classes, Mapper

@Data
@NoArgsConstructor
@AllArgsConstructor
public class Seat {
    private Integer seatId;
    private String seatName;
}

@Component
public interface SeatMapper {
    List<Seat> selectAll(a);
}
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mapper.xml

      
<! DOCTYPEmapper
        PUBLIC "- / / mybatis.org//DTD Mapper / 3.0 / EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.mapper.SeatMapper">
    <select id="selectAll" resultType="com.model.Seat">
        select *
        from seat;
    </select>
</mapper>
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1.8 Testing

import com.mapper.SeatMapper;
import com.model.Seat;
import org.junit.jupiter.api.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;
import org.springframework.transaction.annotation.Transactional;

import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.List;

@SpringJUnitConfig(locations = {"classpath:springConfig/spring-context.xml"})
public class SSMTest01 {

    @Autowired
    private DataSource dataSource;

    @Autowired
    private SeatMapper seatMapper;

    Logger logger = LoggerFactory.getLogger(getClass());

    @Test
    public void testConn(a) throws SQLException {
        Connection connection = dataSource.getConnection();
        logger.debug(connection.toString());

    }

    @Test
    @Transactional(readOnly = true)
    public void selectTest01(a)
    {
        List<Seat> seatList = seatMapper.selectAll();
        for(Seat seat: seatList ) { System.out.println(seat); }}}Copy the code

Spring+SpringMVC

1.9 Web. XML configuration

      
<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">

    <! -- ContextLoaderListener -->
    <! Context-param = context-param = context-param = context-param
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:springConfig/spring-context.xml</param-value>
    </context-param>

    <! -- ContextLoaderListener listener -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <! -- DispatcherServlet -->
    <servlet>
        <servlet-name>dispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springConfig/spring-mvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>


    <! Note the order of two filters: character set Filter first, transform request mode Filter second
    <! -- CharacterEncodingFilter -->
    <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>
        <init-param>
            <param-name>forceRequestEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
        <init-param>
            <param-name>forceResponseEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>characterEncodingFilter</filter-name>
        <url-pattern>/ *</url-pattern>
    </filter-mapping>


    <! -- HiddenHttpMethodFilter -->
    <filter>
        <filter-name>hiddenHttpMethodFilter</filter-name>
        <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>hiddenHttpMethodFilter</filter-name>
        <url-pattern>/ *</url-pattern>
    </filter-mapping>


</web-app>
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1.10 spring MVC. XML (Thymeleaf)

      
<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"
       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 https://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <! -- Automatically scan packets to validate annotations under specified packets, managed by IOC containers -->
    <context:component-scan base-package="com.controller"/>

    <! Let Spring MVC not handle static resources -->
    <mvc:default-servlet-handler/>

    <! -- SpringMVC Annotation Driver (standard) -->
    <mvc:annotation-driven/>

    <! -- Thymeleaf view parser -->
    <bean id="viewResolver" class="org.thymeleaf.spring5.view.ThymeleafViewResolver">
        <property name="order" value="1"/>
        <property name="characterEncoding" value="UTF-8"/>
        <property name="templateEngine">
            <bean class="org.thymeleaf.spring5.SpringTemplateEngine">
                <property name="templateResolver">
                    <bean class="org.thymeleaf.spring5.templateresolver.SpringResourceTemplateResolver">

                        <! -- View prefix -->
                        <property name="prefix" value="/WEB-INF/view/"/>

                        <! -- View suffix -->
                        <property name="suffix" value=".html"/>
                        <property name="templateMode" value="HTML5"/>
                        <property name="characterEncoding" value="UTF-8"/>
                    </bean>
                </property>
            </bean>
        </property>
    </bean>
</beans>
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1.11 minutes controller

package com.controller;
import com.mapper.SeatMapper;
import com.model.Seat;
import com.services.PageInfoDemo01;
import org.springframework.beans.factory.annotation.Autowired;
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;
import java.util.List;

@Controller
public class IndexHandle {

    @Autowired
    private SeatMapper seatMapper;

    @RequestMapping(value = "/", method = {RequestMethod.GET})
    public ModelAndView indexView( ModelAndView mv) {

        List<Seat> seatList = seatMapper.selectAll();

        mv.addObject("seatList", seatList);
        mv.setViewName("index");
        return mv;
    }}
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1.12 HTML

<! DOCTYPEhtml>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>The home page</title>
</head>
<body>
<br>
<h1>SSM integration test</h1>

<! - button - >
<div class="row">
    <div class="col-md-4 col-md-offset-8">
        <button class="btn btn-primary">new</button>
        <button class="btn btn-danger">delete</button>
    </div>
</div>

<! -- Display table data -->
<div class="row">
    <div class="col-md-12">
        <table class="table table-hover">
            <tr>
                <th>ID</th>
                <th>NAME</th>
            </tr>
            <tbody th:if="${#lists.isEmpty(seatList)}">
            <tr>
                <td colspan="3">I'm sorry! No data found!</td>
            </tr>
            </tbody>
            <tbody th:if="${not #lists.isEmpty(seatList)}">
            <tr th:each="seat : ${seatList}">
                <td th:text="${seat.seatId}">The employee ID is displayed here</td>
                <td th:text="${seat.seatName}">The employee NAME is displayed here</td>
            </tr>
            </tbody>
        </table>
    </div>
</div>
</body>
</html>
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Start Tomcat 1.13

complete

over