SqlBean
介绍
SqlBean是一款通过Java语法生成SQL语句的ORM插件，其理念是弱化在开发阶段对数据库的操作，无需先建表再开发，可直接编写实体类和业务代码，项目启动后自动创建表和维护表结构。内置大量常用方法，支持灵活的条件查询，无DAO层，在项目中几乎不需要编写SQL语句，帮助你快速进行业务功能开发，除了支持Mybatis也同时支持Spring Jdbc。
🚀特点: 多数据源, 动态Schema, 读写分离, 自动建表, 自动维护表结构, 联表查询, 乐观锁, 分页
💻环境: JDK8+, Mybatis3.2.4+, (Spring MVC 4.1.2+, Spring Boot 1.x, Spring Boot 2.x)
💿数据库: Mysql, MariaDB, Oracle, Sqlserver2008+, Postgresql, DB2, Derby, Sqlite, HSQL, H2
SqlBean For Android请移步这里👉 gitee(推荐)、 github
SuperCode代码生成项目👉 https://gitee.com/iJovi/supercode
SqlBean使用例子以及代码生成例子点击这里👉 https://gitee.com/iJovi/sqlbean-example
快速开始
1.引入Maven依赖
<dependency>
<groupId>cn.vonce</groupId>
<artifactId>vonce-sqlbean-spring</artifactId>
<version>1.6.5</version>
</dependency>
2.标注实体类
@Data
public class BaseEntity {
@SqlId(type = IdType.SNOWFLAKE_ID_16)
@SqlColumn(notNull = true, remarks = "唯一id")//字段不能为null,表字段注释
private Long id;
@SqlColumn(remarks = "创建者")//表字段注释
private Long creator;
@SqlDefaultValue(with = FillWith.INSERT)
@SqlColumn(remarks = "创建时间")//表字段注释
private Date createTime;
@SqlColumn(remarks = "更新者")//表字段注释
private Long updater;
@SqlDefaultValue(with = FillWith.UPDATE)
@SqlColumn(remarks = "更新时间")//表字段注释
private Date updateTime;
@SqlLogically
@SqlColumn(remarks = "是否删除(0正常 1删除)")//表字段注释
private Boolean deleted;
}
@Data
//autoAlter设置为true，实体类有变动时自动同步表结构
@SqlTable(autoAlter = true, value = "t_user", remarks = "用户")
public class User extends BaseEntity {
@SqlColumn(notNull = true, remarks = "用户名")//字段不能为null,表字段注释
private String userName;
@SqlColumn(remarks = "姓名")//表字段注释
private String nickName;
@SqlColumn(notNull = true, remarks = "手机号码")//表字段注释
private String mobilePhone;
@SqlColumn(notNull = true, remarks = "密码")//表字段注释
private String password;
@SqlColumn(notNull = true, remarks = "性别")//表字段注释
private Integer gender;
@SqlColumn(remarks = "年龄")//表字段注释
private Integer age;
@SqlColumn(remarks = "电子邮箱")//表字段注释
private String email;
@SqlColumn(remarks = "头像", oldName = "head_portrait")//表字段注释,修改表字段名称需要在oldName指定旧的名称
private String avatar;
@SqlDefaultValue(with = FillWith.INSERT)
@SqlColumn(notNull = true, remarks = "状态(0正常 1停用)")//字段不能为null,表字段注释
private UserStatus status;
}
3.无需Dao层，Service层接口只需继承SqlBeanService<实体类, id类型>
public interface UserService extends SqlBeanService<User, Long> {
//这里可以写自己封装的方法
}
4.Service实现类只需继承MybatisSqlBeanServiceImpl<实体类, id类型>和实现你的Service接口
//使用Spring Jdbc的话将继承的父类改成SpringJdbcSqlBeanServiceImpl即可
@Service
public class UserServiceImpl extends MybatisSqlBeanServiceImpl<User, Long> implements UserService {
}
5.Controller层
@RequestMapping("user")
@RestController
public class UserController {
@Autowired
private UserService userService;
//查询
@GetMapping("select")
public RS select() {
//查询列表
List<User> list = userService.select();
list = userService.selectBy(Wrapper.where(Cond.gt(User::getId, 10)).and(Cond.lt(User::getId, 20)));
//指定查询
list = userService.select(new Select().column(User::getId, User::getUserName, User::getMobilePhone).where().gt(User::getId, 10));
//查询一条
User user = userService.selectById(1L);
user = userService.selectOneBy(Wrapper.where(eq(User::getId, 1001)));
//sql语义化查询《20岁且是女性的用户根据创建时间倒序，获取前10条》
list = userService.select(new Select().column(User::getId, User::getUserName, User::getMobilePhone).where().eq(User::getAge, 22).and().eq(User::getGender, 0).back().orderByDesc(User::getCreateTime).page(0, 10));
//联表查询《20岁且是女性的用户根据创建时间倒序，查询前10条用户的信息和地址》
Select select = new Select();
select.column(User::getId, User::getUserName, User::getMobilePhone, UserAddress::getProvince, UserAddress::getCity, UserAddress::getArea, UserAddress::getDetails);
select.innerJoin(UserAddress.class).on().eq(UserAddress::getId, User::getId);
select.where().gt(User::getAge, 22).and().eq(User::getGender, 0);
select.orderByDesc(User::getCreateTime);
select.page(0, 10);
//查询Map
Map<String, Object> map = userService.selectMap(select);
List<Map<String, Object>> mapList = userService.selectMapList(select);
return super.successHint("获取成功", list);
}
//分页
@GetMapping("getList")
public Map getList(HttpServletRequest request) {
// 查询对象
Select select = new Select();
ReqPageHelper<User> pageHelper = new ReqPageHelper<>(request);
pageHelper.paging(select, userService);
return pageHelper.toResult("获取列表成功");
}
//统计（函数使用）
@GetMapping("getStatistics")
public Result getStatistics() {
Select select = new Select();
select.column(SqlFun.count(User::getId), "count").column(SqlFun.avg(User::getAge));
select.where().gt(SqlFun.date_format(User::getCreateTime, "%Y-%m-%d"), "2024-06-24");
select.groupBy(User::getGender);
select.orderByDesc("count");
List<Map<String, Object>> mapList = userService.selectMapList(select);
return Result.success(mapList);
}
//更新
@PostMapping("update")
public RS update(User user) {
//根据bean内部id更新
long i = userService.updateByBeanId(user);
//根据条件更新
//i = userService.updateBy(Wrapper.where(Cond.gt(User::getAge, 22)).and(Cond.eq(User::getGender, 1)));
//指定更新某个字段 UPDATE user SET gender = 1, name = 'Jovi' ,age = age + 1 WHERE = id = 111
userService.update(new Update<User>().set(User::getGender, 1).set(User::getUserName, "Jovi").setAdd(User::getAge, User::getAge, 1).where().eq(User::getId, 111).back());
if (i > 0) {
return super.successHint("更新成功");
}
return super.othersHint("更新失败");
}
//删除
@PostMapping("deleteById")
public RS deleteById(Integer[] id) {
//根据id删除
long i = userService.deleteById(id);
//根据条件删除
//i = userService.deleteBy(Wrapper.where(gt(User::getAge, 22)).and(eq(User::getGender, 1)));
if (i > 0) {
return super.successHint("删除成功");
}
return super.othersHint("删除失败");
}
//插入
@PostMapping("add")
public RS add() {
List<User> userList = new ArrayList<>();
for (int i = 0; i < 100; i++) {
User user = new User(i, "name" + i);
userList.add(user);
}
userService.insert(userList);
return successHint("成功");
}
}
本次更新内容：
1.修复查询表字段长度的问题；
敬请期待1.7.0版本，可查看预览版：https://gitee.com/iJovi/vonce-sqlbean/tree/advance/
