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README
Apache-2.0

Cnbbx_MyBatis通用Mapper

<dependency>
  <groupId>com.cnbbx</groupId>
  <artifactId>cnbbx-mybatis</artifactId>
  <version>1.3.1</version>
</dependency>

方便的使用MyBatis单表的增删改查

100%业务不需要再写sql以及配置文件,支持多操作符,最重要一点,不需要太复杂的使用,可以xml+mapper混合使用,并且代码方式和传统使用mybatis的区别就是绑定了通用mapper而已。如果有特殊业务,也支持在dao基础上进行配置文件方式进代码编写工作

优点?

1.支持多种语句操作,如eq,neq,ge,gt,le,lt,is null,not null,is empty,not empty,in,not in,exp以上操作都为AND,目前不支持OR

2.支持多张表联查,依旧不写sql,同时也支持以上多种操作符。只需要简单配置一下注解即可。

3.支持字段別名,cas需求就很好处理了哦。对同一个字段可以取别名多次set。

4.有工具类,直接生成数据库建表文件,对象建模。

缺点?

目前不支持OR,不过可以通过exp实现OR。

使用方式

参考如下几个实现类 1.QueryBuilder 实现查询业务 2.UpdateBuilder 实现更新业务,支持根据查询条件更新数据 3.InsertBuilder 实现插入业务 4.DeleteBuilder 实现删除业务

准备开始

定义领域对象

@Table(table = "user_info")//数据库表名
public class UserInfo implements Serializable {

    @Column(length = "20")
    private Long uid;

    @Column(length = "50", desc = "用户昵称")
    private String uname;

    @Column(length = "50", desc = "用户手机")
    private String uphone;

    @Column(length = "50")
    private String uaddress;
    
    //省略get/set
}

多个链表查询定义方式
@Table(table = "more", moreTable = "user_info as uinfo,user_order as uorder", moreOn = "uinfo.uid=uorder.uid")

只是单独两个链表查询
@Table(table = "user_info", tableAs = "uinfo", joinTable = "user_order", joinTableAs = "uorder", tableOn = "uid", joinTableOn = "uid", joinType = JoinType.inner)

定义一个mapper,不需要实现方法,泛型指定返回对象

public interface UserInfoMapper extends MysqlBaseMapper<UserInfo> {}

定义一个dao接口

public interface UserInfoDao extends MySqlBaseDao<UserInfo> {}

实现dao,对mapper进行绑定,指定mapper的class,dao也可以用传统的xml方式实现自己的业务,dao绑定mapper为了调用mapper通用方法,也还原了大家经常使用mybatis的方式。

@Service
public class UserInfoDaoImpl extends AbstractMySqlBaseDao<UserInfo> implements UserInfoDao {
    @Override
    public Class mapperClass() {
        return UserInfoMapper.class;
    }
}

开始使用了,注意:所有property字符串都为java类字段定义,非数据库字段。

查询单个对象

QueryBuilder queryBuilder = QueryBuilder.build(UserInfo.class).eq("uid",1);
UserInfo userInfo = userInfoDao.one(queryBuilder);

查询list

QueryBuilder queryBuilder = QueryBuilder.build(UserInfo.class).eq("uname","jinge");
List<UserInfo> userInfos = userInfoDao.list(queryBuilder);

查询总数

QueryBuilder queryBuilder = QueryBuilder.build(UserInfo.class).eq("uphone","134********");
int  count = userInfoDao.count(queryBuilder);

查询当前页数据

QueryBuilder queryBuilder = QueryBuilder.build(UserInfo.class).page(1).size(10).eq("uid",1);
PageData  page = userInfoDao.page(queryBuilder);

更新数据

UpdateBuilder update = UpdateBuilder.build(UserInfo.class).set("uphone",mobile).set("token", token).eq("uid", 1);
int r = userInfoDao.update(update);

插入数据

UserInfo userInfo = new UserInfo();
userInfo.setId(UUIDUtils.uuid());
userInfo.setToken(token);
userInfo.setChannel(channel);
userInfo.setStatus_at(StatusAt.active.getCode());
userInfo.setClient_version(clientVersion);
userInfo.setCredit(0);
userInfo.setIp(ip);
userInfo.setPhone(phone);
userInfo.setPassword(sourcePwd);
userInfo.setSalt(salt);
userInfo.setCreate_at(now());
userInfo.setUpdate_at(now());
userInfo.setOs(os);
InsertBuilder insert = InsertBuilder.build(UserInfo.class).set(userInfo);
int r = userInfoDao.insert(insert);

删除数据

DeleteBuilder delete = DeleteBuilder.build(UserInfo.class).eq("uid", 1);
int r = userInfoDao.delete(delete);

作者信息

因项目需求,为了快速开发,花了几天时间简单封装了mybatis3,支持多种操作符的查询和写入,欢迎提出意见!

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简介

继承Mapper实现的方法,无需编写太多mapper.xml文件,即可获得CRUD功能。 展开 收起
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