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BeetSql是一个全功能DAO工具, 同时具有Hibernate 优点 & Mybatis优点功能,适用于承认以SQL为中心,同时又需求工具能自动能生成大量常用的SQL的应用。
beatlsql 优点
开发效率
无需注解,自动使用大量内置SQL,轻易完成增删改查功能,节省50%的开发工作量
数据模型支持Pojo,也支持Map/List这种快速模型,也支持混合模型
SQL 模板基于Beetl实现,更容易写和调试,以及扩展
维护性
SQL 以更简洁的方式,Markdown方式集中管理,同时方便程序开发和数据库SQL调试。
可以自动将sql文件映射为dao接口类
灵活直观的支持支持一对一,一对多,多对多关系映射而不引入复杂的OR Mapping概念和技术。
具备Interceptor功能,可以调试,性能诊断SQL,以及扩展其他功能
其他
内置支持主从数据库支持的开源工具
支持跨数据库平台,开发者所需工作减少到最小,目前跨数据库支持mysql,postgres,oracle,sqlserver,h2,sqllite,DB2.
引入依赖
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <optional>true</optional> </dependency> <dependency> <groupId>com.ibeetl</groupId> <artifactId>beetl</artifactId> <version>2.3.2</version> </dependency> <dependency> <groupId>com.ibeetl</groupId> <artifactId>beetlsql</artifactId> <version>2.3.1</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.0.5</version> </dependency>
这几个依赖都是必须的。
整合阶段
由于springboot没有对 beatlsql的快速启动装配,所以需要我自己导入相关的bean,包括数据源,包扫描,事物管理器等。
在application加入以下代码:
@Bean(initMethod = "init", name = "beetlConfig") public BeetlGroupUtilConfiguration getBeetlGroupUtilConfiguration() { BeetlGroupUtilConfiguration beetlGroupUtilConfiguration = new BeetlGroupUtilConfiguration(); ResourcePatternResolver patternResolver = ResourcePatternUtils.getResourcePatternResolver(new DefaultResourceLoader()); try { // WebAppResourceLoader 配置root路径是关键 WebAppResourceLoader webAppResourceLoader = new WebAppResourceLoader(patternResolver.getResource("classpath:/templates").getFile().getPath()); beetlGroupUtilConfiguration.setResourceLoader(webAppResourceLoader); } catch (IOException e) { e.printStackTrace(); } //读取配置文件信息 return beetlGroupUtilConfiguration; } @Bean(name = "beetlViewResolver") public BeetlSpringViewResolver getBeetlSpringViewResolver(@Qualifier("beetlConfig") BeetlGroupUtilConfiguration beetlGroupUtilConfiguration) { BeetlSpringViewResolver beetlSpringViewResolver = new BeetlSpringViewResolver(); beetlSpringViewResolver.setContentType("text/html;charset=UTF-8"); beetlSpringViewResolver.setOrder(0); beetlSpringViewResolver.setConfig(beetlGroupUtilConfiguration); return beetlSpringViewResolver; } //配置包扫描 @Bean(name = "beetlSqlScannerConfigurer") public BeetlSqlScannerConfigurer getBeetlSqlScannerConfigurer() { BeetlSqlScannerConfigurer conf = new BeetlSqlScannerConfigurer(); conf.setBasePackage("com.forezp.dao"); conf.setDaoSuffix("Dao"); conf.setSqlManagerFactoryBeanName("sqlManagerFactoryBean"); return conf; } @Bean(name = "sqlManagerFactoryBean") @Primary public SqlManagerFactoryBean getSqlManagerFactoryBean(@Qualifier("datasource") DataSource datasource) { SqlManagerFactoryBean factory = new SqlManagerFactoryBean(); BeetlSqlDataSource source = new BeetlSqlDataSource(); source.setMasterSource(datasource); factory.setCs(source); factory.setDbStyle(new MySqlStyle()); factory.setInterceptors(new Interceptor[]{new DebugInterceptor()}); factory.setNc(new UnderlinedNameConversion());//开启驼峰 factory.setSqlLoader(new ClasspathLoader("/sql"));//sql文件路径 return factory; } //配置数据库 @Bean(name = "datasource") public DataSource getDataSource() { return DataSourceBuilder.create().url("jdbc:mysql://127.0.0.1:3306/test").username("root").password("123456").build(); } //开启事务 @Bean(name = "txManager") public DataSourceTransactionManager getDataSourceTransactionManager(@Qualifier("datasource") DataSource datasource) { DataSourceTransactionManager dsm = new DataSourceTransactionManager(); dsm.setDataSource(datasource); return dsm; }
在resouces包下,加META_INF文件夹,文件夹中加入spring-devtools.properties:
restart.include.beetl=/beetl-2.3.2.jar restart.include.beetlsql=/beetlsql-2.3.1.jar
在templates下加一个index.btl文件。
加入jar和配置beatlsql的这些bean,以及resources这些配置之后,springboot就能够访问到数据库类。
举个restful的栗子
初始化数据库的表
# DROP TABLE `account` IF EXISTS CREATE TABLE `account` ( `id` int(11) NOT NULL AUTO_INCREMENT, `name` varchar(20) NOT NULL, `money` double DEFAULT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8; INSERT INTO `account` VALUES ('1', 'aaa', '1000'); INSERT INTO `account` VALUES ('2', 'bbb', '1000'); INSERT INTO `account` VALUES ('3', 'ccc', '1000');
bean
public class Account { private int id ; private String name ; private double money; getter... setter... }
数据访问dao层
public interface AccountDao extends BaseMapper<Account> { @SqlStatement(params = "name") Account selectAccountByName(String name);}
接口继承BaseMapper,就能获取单表查询的一些性质,当你需要自定义sql的时候,只需要在resouses/sql/account.md文件下书写文件:
selectAccountByName===*根据name获account select * from account where name= #name#
其中“=== ”上面是唯一标识,对应于接口的方法名,“* ”后面是注释,在下面就是自定义的sql语句,具体的见官方文档。
web层
这里省略了service层,实际开发补上。
@RestController@RequestMapping("/account")public class AccountController { @Autowired AccountDao accountDao; @RequestMapping(value = "/list",method = RequestMethod.GET) public List<Account> getAccounts(){ return accountDao.all(); } @RequestMapping(value = "/{id}",method = RequestMethod.GET) public Account getAccountById(@PathVariable("id") int id){ return accountDao.unique(id); } @RequestMapping(value = "",method = RequestMethod.GET) public Account getAccountById(@RequestParam("name") String name){ return accountDao.selectAccountByName(name); } @RequestMapping(value = "/{id}",method = RequestMethod.PUT) public String updateAccount(@PathVariable("id")int id , @RequestParam(value = "name",required = true)String name, @RequestParam(value = "money" ,required = true)double money){ Account account=new Account(); account.setMoney(money); account.setName(name); account.setId(id); int t=accountDao.updateById(account); if(t==1){ return account.toString(); }else { return "fail"; } } @RequestMapping(value = "",method = RequestMethod.POST) public String postAccount( @RequestParam(value = "name")String name, @RequestParam(value = "money" )double money) { Account account = new Account(); account.setMoney(money); account.setName(name); KeyHolder t = accountDao.insertReturnKey(account); if (t.getInt() > 0) { return account.toString(); } else { return "fail"; } }}
通过postman 测试,代码已全部通过。
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