1.创建数据库表

数据库环境搭建

CREATE DATABASE `ssmbuild`;

USE `ssmbuild`

DROP TABLE IF EXISTS `books`;

CREATE TABLE `books`(
bookID INT(10) NOT NULL AUTO_INCREMENT COMMENT '书id',
bookName VARCHAR(100) NOT NULL ,
bookCounts INT(11) NOT NULL ,
detail VARCHAR(200) NOT NULL ,
KEY bookID (bookID)
)ENGINE=INNODB DEFAULT CHARSET=utf8;

INSERT INTO books (bookID,bookName,bookCounts,detail)VALUES
(1,'java',1,'从入门到放弃'),
(2,'MySQL',10,'从删库到跑路'),
(3,'Linux',5,'从进门到坐牢');

2.搭建IDEA环境

创建普通Maven项目，添加web框架4.0

2.1添加pom.xml依赖

<!--  依赖：junit，数据库驱动，连接池，servlet ，jsp，mybatis，mybatis-spring ，spring  -->

    <dependencies>
   <!-- Junit -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
        <!-- MySQL -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.47</version>
        </dependency>
        <!-- 数据库连接池 c3p0-->
        <dependency>
            <groupId>com.mchange</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.5.2</version>
        </dependency>
        <!-- Servlet JSP -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.2</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>

<!--   mybatis     -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.2</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.2</version>
        </dependency>

<!--    spring    -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.1.9.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.1.9.RELEASE</version>
        </dependency>


    </dependencies>

2.2静态资源导出问题

<!--  静态资源导出问题  -->
    <build>
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
        </resources>
    </build>

3.IDEA连接数据库

 

 4.构建基本结构和配置框架

4.1 mybatis-config.xml

<?xml version="1.0" encoding="UTF8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>

</configuration>

4.2 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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd">
 
 
</beans>

5.mybatis层的编写

database.properties文件的编写

jdbc.driver=com.mysql.jdbc.Driver
#如果使用的是MySQL8.0+,增加一个时区的配置;&serverTimezone=Asia/Shanghai
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=true&useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=2001

Dao层 

<?xml version="1.0" encoding="UTF8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<!--配置数据源，交给spring去做-->
     <typeAliases>
<!--     把pojo下的类起别名，直接是类名小写    -->
         <package name="com.kuang.pojo"/>
     </typeAliases>

    <mappers>
        <mapper class="com.kuang.dao.BooksMapper"/>
    </mappers>
</configuration>

 

<?xml version="1.0" encoding="UTF8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.kuang.dao.BooksMapper">

    <insert id="addBook" parameterType="Books">
        INSERT INTO books (bookName,bookCounts,detail) VALUES (#{bookName},#{bookCounts},#{detail});
    </insert>

    <delete id="deleteBook" parameterType="int">
        delete
        from books
        where bookID=#{bookID};
    </delete>

    <update id="updateBook" parameterType="Books">
        UPDATE
            `ssmbuild`.`books`
        SET
            `bookName` =#{bookName},
            `bookCounts` = #{bookCounts},
            `detail` = #{detail}
        WHERE `bookID` = #{bookID};
    </update>

    <select id="queryBookByID" resultType="Books">
        select * from `ssmbuild`.`books`   WHERE `bookID` = #{bookID};
    </select>

    <select id="findAllBooks" resultType="Books">
        select * from `ssmbuild`.`books`;
    </select>
</mapper>