使用ssm框架编写简单图书管理系统（一）

1.创建项目 编写配置文件 

可参考上一篇文章 https://blog.****.net/xyz1995920/article/details/79901324

贴上配置文件：

1、pom.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>cn.vp</groupId>
  <artifactId>BookManger</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>BookManger Maven Webapp</name>
  <!-- FIXME change it to the project's website -->
  <url>http://www.example.com</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.7</maven.compiler.source>
    <maven.compiler.target>1.7</maven.compiler.target>
  </properties>

  <dependencies>

    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>


    <!-- https://mvnrepository.com/artifact/javax.servlet/jstl -->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
    <!--配置德鲁伊的数据源-->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
      <version>1.1.6</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.1</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-tx -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>4.2.4.RELEASE</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>4.2.4.RELEASE</version>
    </dependency>


    <!--配置mybatis需要的依赖包-->
    <dependency>
      <groupId>asm</groupId>
      <artifactId>asm</artifactId>
      <version>3.3.1</version>
    </dependency>

    <dependency>
      <groupId>cglib</groupId>
      <artifactId>cglib</artifactId>
      <version>2.2.2</version>
    </dependency>

    <dependency>
      <groupId>org.javassist</groupId>
      <artifactId>javassist</artifactId>
      <version>3.17.1-GA</version>
    </dependency>
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.6</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/log4j/log4j -->
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>1.2.17</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/commons-logging/commons-logging -->
    <dependency>
      <groupId>commons-logging</groupId>
      <artifactId>commons-logging</artifactId>
      <version>1.2</version>
    </dependency>

    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
      <version>1.5.8</version>
    </dependency>

    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>1.5.8</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.3.0</version>
    </dependency>

    <!-- spring jar-->


    <!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>4.2.4.RELEASE</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-core -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>4.2.4.RELEASE</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.springframework/spring-beans -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-beans</artifactId>
      <version>4.2.4.RELEASE</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.springframework/spring-expression -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-expression</artifactId>
      <version>4.2.4.RELEASE</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-test -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>4.2.4.RELEASE</version>
      <scope>test</scope>
    </dependency>

    <!-- https://mvnrepository.com/artifact/aopalliance/aopalliance -->
    <dependency>
      <groupId>aopalliance</groupId>
      <artifactId>aopalliance</artifactId>
      <version>1.0</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.ow2.asm/asm -->
    <dependency>
      <groupId>org.ow2.asm</groupId>
      <artifactId>asm</artifactId>
      <version>4.2</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.aspectj/aspectjrt -->
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjrt</artifactId>
      <version>1.8.13</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.aspectj/aspectjweaver -->
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.8.13</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.springframework/spring-web -->
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-web -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>4.2.4.RELEASE</version>
    </dependency>


    <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>4.2.4.RELEASE</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/commons-fileupload/commons-fileupload -->
    <dependency>
      <groupId>commons-fileupload</groupId>
      <artifactId>commons-fileupload</artifactId>
      <version>1.3.1</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/commons-io/commons-io -->
    <dependency>
      <groupId>commons-io</groupId>
      <artifactId>commons-io</artifactId>
      <version>1.3.1</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/com.alibaba/fastjson -->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>fastjson</artifactId>
      <version>1.2.46</version>
    </dependency>


  </dependencies>

  <build>

    <defaultGoal>compile</defaultGoal>
    <resources>
      <resource>
        <directory>src/main/java</directory>
        <includes>
          <include>**/*.xml</include>
        </includes>
      </resource>
      <resource>
        <directory>src/main/resources</directory>
      </resource>
    </resources>

    <finalName>BookManger</finalName>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <plugin>
          <groupId>org.mybatis.generator</groupId>
          <artifactId>mybatis-generator-maven-plugin</artifactId>
          <version>1.3.5</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>
        </plugin>


        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.0.0</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-compiler-plugin</artifactId>
          <version>3.7.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.20.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-war-plugin</artifactId>
          <version>3.2.0</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>
    </pluginManagement>
  </build>
</project>

2、web.xml:

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">

  <display-name>Archetype Created Web Application</display-name>


  <!--  启动spring监听器 -->
  <listener>
    <description>Spring</description>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>



  <servlet>
    <servlet-name>springMVC</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:springmvc-servlet.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>springMVC</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>



</web-app>

3、applicationContext.xml （spring配置文件）

<?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:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
">

    <!-- 1.引入db.properties -->
    <context:property-placeholder location="classpath:jdbc.properties"/>
    <!-- 2.开启spring ioc注解及扫描 -->
    <context:annotation-config/>
    <context:component-scan base-package="cn.vp">
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
    <!-- 编写mybatis的配置 -->
    <!-- 3.配置连接池 druid -->
    <bean id="druidDataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
        <property name="url" value="${url}"/>
        <property name="username" value="${username}"/>
        <property name="password" value="${password}"/>
        <property name="initialSize" value="5"/>
        <property name="maxActive" value="20"/>
        <property name="minIdle" value="2"/>
        <property name="maxWait" value="5000"/>
    </bean>

    <!-- 4  配置sqlsessionfactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="druidDataSource"/>
        <!-- 加载xml文件-->
        <property name="mapperLocations" value="classpath:cn/vp/dao/*.xml"/>
        <!-- 给类取别名mybayis-->
        <property name="typeAliasesPackage" value="cn.vp"/>
    </bean>
    <!-- 5.配置扫描器 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="cn.vp.dao"/>
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
    </bean>
    <!-- 6.配置事务 -->
    <bean id="dataSourceTransactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="druidDataSource"/>
    </bean>
    <!-- 开启事务的注解 -->
    <tx:annotation-driven transaction-manager="dataSourceTransactionManager"/>


</beans>

4、springmvc-servlet.xml（springmvc配置文件）

<?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: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/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">
    <!--   开启扫描 -->
    <context:component-scan base-package="cn.vp.controller">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
    <!--   开启spring mvc注解 -->
    <mvc:annotation-driven conversion-service="formattingConversionServiceFactoryBean"/>

     <!--静态资源处理器 -->
    <mvc:resources location="/images/" mapping="/images/**"/>

     <!--全局日期转换器   进行注册 -->
    <bean id="formattingConversionServiceFactoryBean"
          class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
        <property name="converters">
            <list>
                <bean id="dateConverter" class="cn.vp.controller.DateConverter"/>
            </list>
        </property>
    </bean>


    <!-- 配置视图解析器 -->
    <bean id="viewResolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver">
        <!-- 配置前缀 -->
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <!-- 配置后缀 -->
        <property name="suffix" value=".jsp"/>
        <!-- 使用jstl的配置 -->
        <property name="viewClass"
                  value="org.springframework.web.servlet.view.JstlView"/>
    </bean>
    <!--   文件上传 -->
    <bean id="multipartResolver"   class="org.springframework.web.multipart.commons.CommonsMultipartResolver" >
        <property name="defaultEncoding" value="utf-8"/> <!-- 默认编码 (ISO-8859-1) -->
        <property name="maxInMemorySize" value="10240"/> <!-- 最大内存大小 (10240)-->
        <property name="uploadTempDir" value="/images/"/> <!-- 上传后的目录名 (WebUtils#TEMP_DIR_CONTEXT_ATTRIBUTE) -->
        <property name="maxUploadSize" value="-1"/> <!-- 最大文件大小，-1为无限止(-1) -->
    </bean>
    <mvc:resources location="/images/" mapping="/images/**" />
    <mvc:resources location="/js/" mapping="/js/**"/>

</beans>

5、generatorconfig.xml（自动生成javabean和dao）

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
      PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
      "http://www.mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
<generatorConfiguration>
   <properties resource="jdbc.properties"/>
   <!-- 数据库驱动 改动1 -->
   <classPathEntry location="H:\Maven\LocalWarehouse\mysql\mysql-connector-java\5.1.6\mysql-connector-java-5.1.6.jar" />
   <context id="DB2Tables" targetRuntime="MyBatis3">
      <!-- 生成的pojo，将implements Serializable-->
      <plugin type="org.mybatis.generator.plugins.SerializablePlugin"/>
      <commentGenerator>
         <property name="suppressDate" value="true" />
         <!-- 是否去除自动生成的注释 true：是 ： false:否 -->
         <property name="suppressAllComments" value="true" />
      </commentGenerator>
      <!--数据库链接URL，用户名、密码 -->
      <jdbcConnection driverClass="${driver}"
         connectionURL="${url}" userId="${username}" password="${password}">
      </jdbcConnection>
      <!-- 默认false，把JDBC DECIMAL 和 NUMERIC 类型解析为 Integer true，把JDBC DECIMAL 和 
         NUMERIC 类型解析为java.math.BigDecimal -->
      <javaTypeResolver>
         <property name="forceBigDecimals" value="false" />
      </javaTypeResolver>
      <!-- 生成模型的包名和位置 -->
      <javaModelGenerator targetPackage="cn.vp.bean"
         targetProject="src/main/java">
         <!-- enableSubPackages:是否让schema作为包的后缀 -->
         <property name="enableSubPackages" value="true" />
         <!-- 从数据库返回的值被清理前后的空格 -->
         <property name="trimStrings" value="true" />
      </javaModelGenerator>
      <!-- 生成映射文件的包名和位置 -->
      <sqlMapGenerator targetPackage="cn.vp.dao"
         targetProject="src/main/java">
         <property name="enableSubPackages" value="true" />
      </sqlMapGenerator>
      <!-- 生成DAO的包名和位置 -->
      <javaClientGenerator type="XMLMAPPER"
         targetPackage="cn.vp.dao" targetProject="src/main/java">
         <property name="enableSubPackages" value="true" />
      </javaClientGenerator>
      <!-- 要生成哪些表 -->
      <!-- tableName:用于自动生成代码的数据库表；domainObjectName:对应于数据库表的javaBean类名 -->
      <table tableName="book_info"
             domainObjectName="BookInfo"
            enableCountByExample="false" 
            enableUpdateByExample="false"
            enableDeleteByExample="false"
            enableSelectByExample="false"
            selectByExampleQueryId="false"/>

      <table tableName="book_type" domainObjectName="BookType"
         enableCountByExample="false" enableUpdateByExample="false"
         enableDeleteByExample="false" enableSelectByExample="false"
         selectByExampleQueryId="false"/>
   </context>
</generatorConfiguration>

6、jdbc.properties和log4j.properties

2. 生成代码并修改

1.配置generator

2.配置tomcat

3.生成代码

4.根据需求修改实体类代码  

在BookInfoMapper类加上查询所有图书的方法

在对应的xml里面加上sql语句 并修改上面因为实体类变化要改的代码

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="cn.vp.dao.BookInfoMapper">
  <resultMap id="BaseResultMap" type="cn.vp.bean.BookInfo">
    <id column="book_id" jdbcType="INTEGER" property="bookId" />
    <result column="book_code" jdbcType="VARCHAR" property="bookCode" />
    <result column="book_name" jdbcType="VARCHAR" property="bookName" />
    <result column="book_author" jdbcType="VARCHAR" property="bookAuthor" />
    <result column="publish_press" jdbcType="VARCHAR" property="publishPress" />
    <result column="publish_date" jdbcType="DATE" property="publishDate" />
    <result column="is_borrow" jdbcType="INTEGER" property="isBorrow" />
    <result column="path" jdbcType="VARCHAR" property="path" />
    <association property="book_type" javaType="cn.vp.bean.BookType">
      <id column="id" jdbcType="INTEGER" property="id" />
      <result column="type_name" jdbcType="VARCHAR" property="typeName" />
    </association>
  </resultMap>
  <sql id="Base_Column_List">
    book_id, book_code, book_name, book_type, book_author, publish_press, publish_date, 
    is_borrow, path
  </sql>
  <select id="selectByPrimaryKey" parameterType="java.lang.Integer" resultMap="BaseResultMap">
    select 
    <include refid="Base_Column_List" />
    from book_info
    where book_id = #{bookId,jdbcType=INTEGER}
  </select>


  <select id="queryAll"  resultMap="BaseResultMap">
    select
    <include refid="Base_Column_List" />
    from book_info
  </select>

  <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">
    delete from book_info
    where book_id = #{bookId,jdbcType=INTEGER}
  </delete>
  <insert id="insert" parameterType="cn.vp.bean.BookInfo">
    insert into book_info (book_id, book_code, book_name, 
      book_type, book_author, publish_press, 
      publish_date, is_borrow, path
      )
    values (#{bookId,jdbcType=INTEGER}, #{bookCode,jdbcType=VARCHAR}, #{bookName,jdbcType=VARCHAR}, 
      #{bookType.id,jdbcType=INTEGER}, #{bookAuthor,jdbcType=VARCHAR}, #{publishPress,jdbcType=VARCHAR},
      #{publishDate,jdbcType=DATE}, #{isBorrow,jdbcType=INTEGER}, #{path,jdbcType=VARCHAR}
      )
  </insert>
  <insert id="insertSelective" parameterType="cn.vp.bean.BookInfo">
    insert into book_info
    <trim prefix="(" suffix=")" suffixOverrides=",">
      <if test="bookId != null">
        book_id,
      </if>
      <if test="bookCode != null">
        book_code,
      </if>
      <if test="bookName != null">
        book_name,
      </if>
      <if test="bookType != null">
        book_type,
      </if>
      <if test="bookAuthor != null">
        book_author,
      </if>
      <if test="publishPress != null">
        publish_press,
      </if>
      <if test="publishDate != null">
        publish_date,
      </if>
      <if test="isBorrow != null">
        is_borrow,
      </if>
      <if test="path != null">
        path,
      </if>
    </trim>
    <trim prefix="values (" suffix=")" suffixOverrides=",">
      <if test="bookId != null">
        #{bookId,jdbcType=INTEGER},
      </if>
      <if test="bookCode != null">
        #{bookCode,jdbcType=VARCHAR},
      </if>
      <if test="bookName != null">
        #{bookName,jdbcType=VARCHAR},
      </if>
      <if test="bookType != null">
        #{bookType.id,jdbcType=INTEGER},
      </if>
      <if test="bookAuthor != null">
        #{bookAuthor,jdbcType=VARCHAR},
      </if>
      <if test="publishPress != null">
        #{publishPress,jdbcType=VARCHAR},
      </if>
      <if test="publishDate != null">
        #{publishDate,jdbcType=DATE},
      </if>
      <if test="isBorrow != null">
        #{isBorrow,jdbcType=INTEGER},
      </if>
      <if test="path != null">
        #{path,jdbcType=VARCHAR},
      </if>
    </trim>
  </insert>
  <update id="updateByPrimaryKeySelective" parameterType="cn.vp.bean.BookInfo">
    update book_info
    <set>
      <if test="bookCode != null">
        book_code = #{bookCode,jdbcType=VARCHAR},
      </if>
      <if test="bookName != null">
        book_name = #{bookName,jdbcType=VARCHAR},
      </if>
      <if test="bookType != null">
        book_type = #{bookType.id,jdbcType=INTEGER},
      </if>
      <if test="bookAuthor != null">
        book_author = #{bookAuthor,jdbcType=VARCHAR},
      </if>
      <if test="publishPress != null">
        publish_press = #{publishPress,jdbcType=VARCHAR},
      </if>
      <if test="publishDate != null">
        publish_date = #{publishDate,jdbcType=DATE},
      </if>
      <if test="isBorrow != null">
        is_borrow = #{isBorrow,jdbcType=INTEGER},
      </if>
      <if test="path != null">
        path = #{path,jdbcType=VARCHAR},
      </if>
    </set>
    where book_id = #{bookId,jdbcType=INTEGER}
  </update>
  <update id="updateByPrimaryKey" parameterType="cn.vp.bean.BookInfo">
    update book_info
    set book_code = #{bookCode,jdbcType=VARCHAR},
      book_name = #{bookName,jdbcType=VARCHAR},
      book_type = #{bookType.id,jdbcType=INTEGER},
      book_author = #{bookAuthor,jdbcType=VARCHAR},
      publish_press = #{publishPress,jdbcType=VARCHAR},
      publish_date = #{publishDate,jdbcType=DATE},
      is_borrow = #{isBorrow,jdbcType=INTEGER},
      path = #{path,jdbcType=VARCHAR}
    where book_id = #{bookId,jdbcType=INTEGER}
  </update>
</mapper>

到目前为止框架大致搭完