springboot 整合tk.mybatis

在使用mybatist的时候经常会有一大堆重复的操作及重复性的代码，就如简单的增删改查。而tk.mybatis则帮你解决了这个问题

首先在pom文件引入

<!-- tkmybatis -->
        <dependency>
            <groupId>tk.mybatis</groupId>
            <artifactId>mapper</artifactId>
            <version>4.0.1</version>
        </dependency>
        <dependency>
            <groupId>tk.mybatis</groupId>
            <artifactId>mapper-spring-boot-starter</artifactId>
            <version>2.1.5</version>
        </dependency>

在applicaton.yml文件中配置

#TkMybatis
mybatis:
  mapper-locations: classpath*:mapper/*.xml
  type-aliases-package: com.demo.model

mapper-locations：根据mapper.xml放置的路劲

type-aliases-package:实体类所放置的位置

在启动类注解@MapperScan，注解了@MapperScan就不用重复在dao层注解@Mapper

@MapperScan("com.demo.dao") //包路径

Mapper接口是不支持批量插入的，所以我们要写一个公共的BaseMapper接口继承于Mapper与InsertListMapper接口，来实现支持批量插入

import tk.mybatis.mapper.additional.insert.InsertListMapper;
import tk.mybatis.mapper.annotation.RegisterMapper;
import tk.mybatis.mapper.common.Mapper;

@RegisterMapper
public interface BaseMapper<T> extends Mapper<T>, InsertListMapper<T> {

}

以上的内容已经实现tkmybatis的配置，但是还是得手动一些重复性代码操作，这时候就需要用到mybatis自动生成插件

mybatis自动生成代码，pom文件配置

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>

            <!-- mybatis generator
            mvn mybatis-generator:generate -Dmybatis.generator.overwrite=true
            -->
            <plugin>
                <groupId>org.mybatis.generator</groupId>
                <artifactId>mybatis-generator-maven-plugin</artifactId>
                <version>1.3.7</version>
                <configuration>
                    <overwrite>true</overwrite>
                    <verbose>true</verbose>
                    <configurationFile>src/main/resources/mybatis-generator.xml</configurationFile>
                </configuration>
                <dependencies>
                    <dependency>
                        <groupId>mysql</groupId>
                        <artifactId>mysql-connector-java</artifactId>
                        <version>${mysql.version}</version>
                    </dependency>
                    <dependency>
                        <groupId>tk.mybatis</groupId>
                        <artifactId>mapper</artifactId>
                        <version>4.0.1</version>
                    </dependency>
                </dependencies>
            </plugin>
        </plugins>
    </build>

mybatis自动生成代码mybatis-generator.xml内容

<?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">
<!-- mvn mybatis-generator:generate -Dmybatis.generator.overwrite=true -->
<generatorConfiguration>



  <!-- defaultModelType="flat" -->
  <context id="Mysql" targetRuntime="MyBatis3Simple" defaultModelType="flat">

    <property name="beginningDelimiter" value="`" />
    <property name="endingDelimiter" value="`" />
    <property name="autoDelimitKeywords" value="true" />
    <property name="javaFileEncoding" value="UTF-8"/>

    <plugin type="tk.mybatis.mapper.generator.MapperPlugin">
      <property name="mappers" value="com.demo.common.mapper.BaseMapper"/>
      <property name="caseSensitive" value="true"/>
      <property name="lombok" value="Data"/>
    </plugin>

    <commentGenerator >
      <property name="suppressAllComments" value="true" />
      <property name="suppressDate" value="true" />
      <property name="addRemarkComments" value="true" />
    </commentGenerator>

    <!-- 数据库连接 -->
    <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                    connectionURL="jdbc:mysql://localhost:3306/myproject?useUnicode=true&amp;characterEncoding=utf-8"
                    userId="root" password="root">
      <property name="useInformationSchema" value="true"/>
    </jdbcConnection>

    <javaTypeResolver>
      <property name="forceBigDecimals" value="false" />
    </javaTypeResolver>

    <!-- model生成器 -->
    <javaModelGenerator targetPackage="com.demo.model"
                        targetProject="src/main/java">
      <property name="enableSubPackages" value="true" />
      <property name="trimStrings" value="true" />
      <property name="useInformationSchema" value="true"/>
    </javaModelGenerator>

    <!-- mapper xml生成器 -->
    <sqlMapGenerator targetPackage="mapper" targetProject="src/main/resources">
      <property name="enableSubPackages" value="true" />
    </sqlMapGenerator>

    <!-- dao接口生成器 -->
    <javaClientGenerator targetPackage="com.demo.dao"
                         targetProject="src/main/java" type="XMLMAPPER">
      <property name="enableSubPackages" value="true" />
    </javaClientGenerator>

    <table tableName="user_role" domainObjectName="UsreRole"
           enableDeleteByExample="false" enableSelectByExample="false" enableUpdateByExample="false">
    </table>

  </context>
</generatorConfiguration>

tableName="user_role"数据库表名 domainObjectName="UsreRole"对应得实体名称

以上使用到bombox插件

最后运行mybatis-generator插件

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