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/
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