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README
Apache-2.0

一:组件jar包说明:

1.封装了数据实体对应的数据库列的一一映射关系
2.提供了基本的增删改的sql生成
3.提供了模糊匹配查询的sql生成
4.提供了精确匹配查询的sql生成
5.提供了基本的Mapper接口,里面有增删查改的基本方法
6.提供了基本的抽象service,里面有增删查改的基本方法
7:提供了分页的基本方法,使用com.github.pagehelper的pagehelper的 5.0.0的版本

二:组件jar包的的导入

1.gradle 添加依赖 
      classpath "com.wolfking:mybatis-crud:1.0.0-SNAPSHOT"
2.maven添加依赖
    <dependency>
    	<groupId>com.wolfking</groupId>
      	<artifactId>mybatis-crud</artifactId>
       <version>1.0.0-SNAPSHOT</version>
    </dependency>

三:jar包类的说明

1.MyTable
	写在实体类上面,如下
	@MyTable("sys_dict")
	public class Dict extends DataEntity {}
	sys_dict 是数据库对应的表名
2.MyId
	写在主键属性上,如下,如果属性名和数据库的列名相同(严格区分大小写),则不需要写括号里面的内容,
	主键的生成,第一版全部使用 UUID
	@MyId("id")
	protected String id;
3.MyColumn
	写在主键属性上,如下,如果属性名和数据库的列名相同(严格区分大小写),则不需要写括号里面的内容
	@MyColumn("remarks")
	protected String remarks; // 备注
4.BaseMapper<T>  基本的mapper接口
5.BaseSqlProvider  基本的sql 提供者
6.BaseService<M extends BaseMapper<T>, T> 提供了基本的service,实体操作的service可以基于这个来写

四:mybatis的分页插件

<plugin interceptor="com.github.pagehelper.PageInterceptor">
        <property name="helperDialect" value="mysql"/>
        <!-- 该参数默认为false -->
        <!-- 设置为true时,会将RowBounds第一个参数offset当成pageNum页码使用 -->
        <!-- 和startPage中的pageNum效果一样-->
        <property name="offsetAsPageNum" value="true"/>
        <!-- 该参数默认为false -->
        <!-- 设置为true时,使用RowBounds分页会进行count查询 -->
        <property name="rowBoundsWithCount" value="true"/>
        <!-- 设置为true时,如果pageSize=0或者RowBounds.limit = 0就会查询出全部的结果 -->
        <!-- (相当于没有执行分页查询,但是返回结果仍然是Page类型)-->
        <property name="pageSizeZero" value="true"/>
        <!-- 3.3.0版本可用 - 分页参数合理化,默认false禁用 -->
        <!-- 启用合理化时,如果pageNum<1会查询第一页,如果pageNum>pages会查询最后一页 -->
        <!-- 禁用合理化时,如果pageNum<1或pageNum>pages会返回空数据 -->
        <property name="reasonable" value="true"/>
        <!-- 3.5.0版本可用 - 为了支持startPage(Object params)方法 -->
        <!-- 增加了一个`params`参数来配置参数映射,用于从Map或ServletRequest中取值 -->
        <!-- 可以配置pageNum,pageSize,count,pageSizeZero,reasonable,orderBy,不配置映射的用默认值 -->
        <!-- 不理解该含义的前提下,不要随便复制该配置 -->
        <property name="params" value="pageNum=pageHelperStart;pageSize=pageHelperRows;"/>
        <!-- 支持通过Mapper接口参数来传递分页参数 -->
        <property name="supportMethodsArguments" value="false"/>
        <!-- always总是返回PageInfo类型,check检查返回类型是否为PageInfo,none返回Page -->
        <property name="returnPageInfo" value="none"/>
    </plugin>

五:jar包的使用方法

1.pom.xml 和 build.gradle 添加依赖
2.实体类的编写
	@MyTable("sys_dict")
	public class Dict{
           @MyId("id")
           private String id;
           @MyColumn
           private String description; // 描述
           @MyColumn("parent_id")
           private String parentId; // 父Id
	}
	
2.mybatis的mapper的编写,继承BaseMapper<T>,T是实体类

	import  com.wolfking.mybatis.mapper.*;
	@Mapper   //这个是mybatis扫描的注解,根据mybatis-spring-boot-starter 版本来确定是否需要添加
	public interface DictMapper extends BaseMapper<Dict> {
	}
	
3.在service层mybatis接口的使用,继承了抽象类的所有方法
	@Service
	public class DictService extends BaseService<DictMapper, Dict> {
		//其他业务代码
	}

六:根据ID查询,根据ID删除需要注意

参数直接输入ID,不需要创建实体类
service.getById("123");
service.deleteById("123");

七:service方法讲解

add:  添加实体
update:更新实体
deleteById:根据ID删除
deleteEntity:根据ID删除
getById: 根据ID查询
getEntity:根据ID查询
findAll:查询所有
seleteVague:模糊匹配查询
seleteAccuracy:精确匹配查询
countAll:统计总数
countVague:模糊匹配,查询总数
countAccuracy:精确匹配,查询总数
pageVague:模糊匹配分页查询
pageAccuracy:精确匹配分页查询
deleteAll: 删除所有实体
deleteVague: 模糊匹配删除实体
deleteAccuracy: 精确匹配删除实体
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springboot-mybatis基类接口的Mapper 基于mybatis-spring-boot-starter-1.3.0 展开 收起
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