微服务架构

SpringBoot非官方教程 | 第五篇:springboot

2017-07-13  本文已影响144人  方志朋

转载请标明出处:
http://blog.csdn.net/forezp/article/details/70662983
本文出自方志朋的博客

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

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。

个人使用感受,使用bealsql做了一些项目的试验,但是没有真正用于真正的生产环境,用起来非常的爽。但是springboot没有提供自动装配的直接支持,需要自己注解bean。另外使用这个orm的人不太多,有木有坑不知道,在我使用的过程中没有遇到什么问题。另外它的中文文档比较友好。

源码下载:https://github.com/forezp/SpringBootLearning

参考资料

BeetlSQL2.8中文文档

优秀文章推荐:

上一篇下一篇

猜你喜欢

热点阅读