SpringCloud SpringBoot mybatis 分布式微服务（二十一）整合 beatlsql

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";
}
}


源码来源通过postman 测试，代码已全部通过。