企業分佈式微服務雲SpringCloud SpringBoot mybatis （二十）整合 beatlsql

整合階段

因爲springboot沒有對 beatlsql的快速啓動裝配，因此須要我本身導入相關的bean，包括數據源，包掃描，事物管理器等。

在application加入如下代碼：

@Bean(initMethod = "init", name = "beetlConfig")
    public BeetlGroupUtilConfiguration getBeetlGroupUtilConfiguration() {
        BeetlGroupUtilConfiguration beetlGroupUtilConfiguration = new BeetlGroupUtilConfiguration();
        ResourcePatternResolver patternResolver = ResourcePatternUtils.getResourcePatternResolver(new DefaultResourceLoader());
        try {
            // WebAppResourceLoader 配置root路徑是關鍵
            WebAppResourceLoader webAppResourceLoader = new WebAppResourceLoader(patternResolver.getResource("classpath:/templates").getFile().getPath());
            beetlGroupUtilConfiguration.setResourceLoader(webAppResourceLoader);
        } catch (IOException e) {
            e.printStackTrace();
        }
        //讀取配置文件信息
        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;
    }

    //配置包掃描
    @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());//開啓駝峯
        factory.setSqlLoader(new ClasspathLoader("/sql"));//sql文件路徑
        return factory;
    }


    //配置數據庫
    @Bean(name = "datasource")
    public DataSource getDataSource() {
        return DataSourceBuilder.create().url("jdbc:mysql://127.0.0.1:3306/test").username("root").password("123456").build();
    }

    //開啓事務
    @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文件夾，文件夾中加入spring-devtools.properties:

restart.include.beetl=/beetl-2.3.2.jar
restart.include.beetlsql=/beetlsql-2.3.1.jar

　　

在templates下加一個index.btl文件。

加入jar和配置beatlsql的這些bean，以及resources這些配置以後，springboot就可以訪問到數據庫類。

舉個restful的栗子

初始化數據庫的表

# 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...

  }  

　　

數據訪問dao層

public interface AccountDao extends BaseMapper<Account> {

    @SqlStatement(params = "name")
    Account selectAccountByName(String name);
}

　　

接口繼承BaseMapper，就能獲取單表查詢的一些性質，當你須要自定義sql的時候，只須要在resouses/sql/account.md文件下書寫文件：

selectAccountByName
===
*根據name獲account

    select * from account where name= #name#

其中「=== 」上面是惟一標識，對應於接口的方法名，「* 」後面是註釋，在下面就是自定義的sql語句，具體的見官方文檔。

web層

這裏省略了service層，實際開發補上。

@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";
        }
    }

　　

源碼來源

經過postman 測試，代碼已所有經過。