如何在grails 3.3中使用具有许多语言的多个数据源

Question

我尝试在多个数据库中连接 mi grails 3.3.9：在 posgrest 中的 1 个主数据源，在 sqlite 中备份的从属数据源，以及用于日志的第 3 个数据源 mongoDb。 问题是当我尝试将域类保存在 sqlite 数据源中时，无法检测到（单独或与其他）。

这是我的 application.yml：

 hibernate:
 cache:
    queries: false
    use_second_level_cache: false
    use_query_cache: false


dataSource:
        pooled: true
        jmxExport: true
        driverClassName: "org.postgresql.Driver"
        username: "postgres"
        password: "postgres"


IkebanaUser:
     pooled: true
     driverClassName: "org.sqlite.JDBC"
     username: ''
     password: ''

grails:
    mongo:
    host: "localhost"
    port: 27017
    username: "admin"
    password: "admin"
    databaseName: "IkebanaERP"


environments:
   development:
      dataSource:
          dbCreate: update
          url: jdbc:postgresql://localhost:5432/IkebanaERP

      dataSources:
          Ikebana:
             grails:
              mongodb:
                  connectionString: "mongodb://localhost:27017/IkebanaERP"


      IkebanaUser:
             url: jdbc:sqlite:/home/marcos/IkebanaUser
             dbCreate: update

test:
    dataSource:
        dbCreate: update
        url: jdbc:postgresql://localhost:5432/IkebanaERP

production:
    dataSource:
        dbCreate: update
        url: jdbc:postgresql://localhost:5432/IkebanaERP
        properties:
            jmxEnabled: true
            initialSize: 5
            maxActive: 50
            minIdle: 5
            maxIdle: 25
            maxWait: 10000
            maxAge: 600000
            timeBetweenEvictionRunsMillis: 5000
            minEvictableIdleTimeMillis: 60000
            validationQuery: SELECT 1
            validationQueryTimeout: 3
            validationInterval: 15000
            testOnBorrow: true
            testWhileIdle: true
            testOnReturn: false
            jdbcInterceptors: ConnectionState
            defaultTransactionIsolation: 2 # TRANSACTION_READ_COMMITTED

这是我的域类

class Usuario {

  String nombre
  String  apellido

  static constraints = {
    nombre  nullable: true
    apellido unique: true
      }
static mapping = {
  datasource 'IkebanaUser'}
}

午餐这个错误：

  "Exception is org.grails.datastore.mapping.core.exceptions.ConfigurationException:   DataSource not found for name [IkebanaUser] in configuration. Please check your multiple data sources configuration and try again."

如果你放入域类：

  datasources(['DEFAULT', 'IkebanaUser']) 

仅用于保存在默认数据源（postgres 数据源）中 这段代码有什么问题？
谢谢

Answer 1

IkebanaUser:
     pooled: true
     driverClassName: "org.sqlite.JDBC"
     username: ''
     password: ''

那应该是dataSources 的孩子，像这样：

dataSources:
    IkebanaUser:
         pooled: true
         driverClassName: "org.sqlite.JDBC"
         username: ''
         password: ''

Answer 2

问题很多

构建 graddle 需要

  compile group: 'com.zsoltfabok', name: 'sqlite-dialect', version: '1.0'

控制器方法需要像 jeff 所说的 @Transactional("IkebanaUser") 并保存对象 b.IkebanaUser.save(flush:true) 然后看看这个

 class UsuarioController {
   @Transactional("IkebanaUser")
    def index() {
       Usuario b = new Usuario(nombre:"Mañana", apellido: "ros" )
       System.out.println(b.apellido)
       b.IkebanaUser.save(flush:true)
   }

和 application.yml 看起来像 jeef 说的

dataSource:
   pooled: true
   jmxExport: true
   driverClassName: "org.postgresql.Driver"
   username: "postgres"
    password: "postgres"

dataSources:
    IkebanaUser:
           pooled: true
           driverClassName: "org.sqlite.JDBC"
           username: ''
          password: ''

environments:
    development:
        dataSource:
           dbCreate: update
           url: jdbc:postgresql://localhost:5432/IkebanaERP

    dataSources:
        IkebanaUser:
            url: jdbc:sqlite:/home/marcos/IkebanaUser
            dbCreate: update
test:
    dataSource:
        url: jdbc:sqlite:/home/marcos/IkebanaUser
        dbCreate: update
production:
    dataSource:
        url: jdbc:sqlite:/home/marcos/IkebanaUser
        dbCreate: update
        properties:
            jmxEnabled: true
   ..........