MyBatis通用Mapper和PageHelper的过程详解

<!-- mybatis -->
<dependency>
  <groupId>org.mybatis.spring.boot</groupId>
  <artifactId>mybatis-spring-boot-starter</artifactId>
  <version>1.3.1</version>
</dependency>
<!-- 通用mapper -->
<dependency>
  <groupId>tk.mybatis</groupId>
  <artifactId>mapper-spring-boot-starter</artifactId>
  <version>1.1.5</version>
</dependency>
<!-- pagehelper 分页插件 -->
<dependency>
  <groupId>com.github.pagehelper</groupId>
  <artifactId>pagehelper-spring-boot-starter</artifactId>
  <version>1.2.3</version>
</dependency>

<build>
  <plugins>
    <plugin>
      <groupId>org.mybatis.generator</groupId>
      <artifactId>mybatis-generator-maven-plugin</artifactId>
      <version>1.3.5</version>
      <dependencies>
        <dependency>
          <!-- 数据库连接驱动 -->
          <groupId>com.oracle</groupId>
          <artifactId>ojdbc6</artifactId>
          <version>6.0</version>
        </dependency>
        <dependency>
          <groupId>tk.mybatis</groupId>
          <artifactId>mapper</artifactId>
          <version>3.4.0</version>
        </dependency>
      </dependencies>
      <executions>
        <execution>
          <id>Generate MyBatis Artifacts</id>
          <phase>package</phase>
          <goals>
            <goal>generate</goal>
          </goals>
        </execution>
      </executions>
      <configuration>
        <!--允许移动生成的文件 -->
        <verbose>true</verbose>
        <!-- 是否覆盖 -->
        <overwrite>true</overwrite>
        <!-- 自动生成的配置 -->
        <configurationFile>src/main/resources/mybatis-generator.xml</configurationFile>
      </configuration>
    </plugin>
  </plugins>
</build>

mybatis:
 # type-aliases扫描路径
 type-aliases-package: com.springboot.bean
 # mapper xml实现扫描路径
 mapper-locations: classpath:mapper/*.xml
 property:
  order: BEFORE

#mappers 多个接口时逗号隔开
mapper:
 mappers: com.springboot.config.MyMapper
 not-empty: false
 identity: oracle

import tk.mybatis.mapper.common.Mapper;
import tk.mybatis.mapper.common.MySqlMapper;

public interface MyMapper<T> extends Mapper<T>, MySqlMapper<T> {
	
}

#pagehelper
pagehelper: 
 helperDialect: oracle
 reasonable: true
 supportMethodsArguments: true
 params: count=countSql

<?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">
<generatorConfiguration>
  <context id="oracle" targetRuntime="MyBatis3Simple" defaultModelType="flat">

    <plugin type="tk.mybatis.mapper.generator.MapperPlugin">
      <!-- 该配置会使生产的Mapper自动继承MyMapper -->
      <property name="mappers" value="com.springboot.config.MyMapper" />
      <!-- caseSensitive默认false，当数据库表名区分大小写时，可以将该属性设置为true -->
      <property name="caseSensitive" value="false"/>
    </plugin>

    <!-- 阻止生成自动注释 -->
    <commentGenerator>
      <property name="javaFileEncoding" value="UTF-8"/>
      <property name="suppressDate" value="true"/>
      <property name="suppressAllComments" value="true"/>
    </commentGenerator>

    <!-- 数据库链接地址账号密码 -->
    <jdbcConnection 
      driverClass="oracle.jdbc.driver.OracleDriver"
      connectionURL="jdbc:oracle:thin:@localhost:1521:ORCL"
      userId="scott"
      password="6742530">
    </jdbcConnection>

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

    <!-- 生成Model类存放位置 -->
    <javaModelGenerator targetPackage="com.springboot.bean" targetProject="src/main/java">
      <property name="enableSubPackages" value="true"/>
      <property name="trimStrings" value="true"/>
    </javaModelGenerator>

    <!-- 生成映射文件存放位置 -->
    <sqlMapGenerator targetPackage="mapper" targetProject="src/main/resources">
      <property name="enableSubPackages" value="true"/>
    </sqlMapGenerator>

    <!-- 生成Dao类存放位置 -->
    <!-- 客户端代码，生成易于使用的针对Model对象和XML配置文件的代码
      type="ANNOTATEDMAPPER",生成Java Model 和基于注解的Mapper对象
      type="XMLMAPPER",生成SQLMap XML文件和独立的Mapper接口 -->
    <javaClientGenerator type="XMLMAPPER" targetPackage="com.springboot.mapper" targetProject="src/main/java">
      <property name="enableSubPackages" value="true"/>
    </javaClientGenerator>

    <!-- 配置需要生成的表 -->
    <table tableName="T_USER" domainObjectName="User" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false">
      <generatedKey column="id" sqlStatement="oralce" identity="true"/>
    </table>
  </context>
</generatorConfiguration>