grails - 无法配置 Grails 3 多个数据源

Question

我最近尝试创建一个应用程序，允许我比较 3 个单独的数据库的值。数据库是 3 个 Oracle 实例，它们(本质上)容纳相同的数据库，但在 DEV/TEST/PROD 设置中。

我想要做的是在 GRAILS 3 中创建一个域类。然后我希望能够获取该域类映射到的记录，但对所有 3 个环境都执行此操作。

从阅读 Grails 3 文档来看，这应该可以通过在 application.yml 中定义 3 个数据源来实现(在我的示例中，我定义了 4 个):

dataSources:
    dataSource:
        pooled: true
        jmxExport: true
        logSql: true
        driverClassName: oracle.jdbc.OracleDriver
        username: MYUSER
        password: Password1
        dbCreate: validate
        url: jdbc:oracle:thin:@someserver:1521:DEV1
    dataSource1:
        pooled: true
        jmxExport: true
        logSql: true
        driverClassName: oracle.jdbc.OracleDriver
        username: MYUSER
        password: Password1
        dbCreate: validate
        url: jdbc:oracle:thin:@someserver:1521:DEV1
    dataSource2:
        pooled: true
        jmxExport: true
        logSql: true
        driverClassName: oracle.jdbc.OracleDriver
        username: MYUSER
        password: Password1
        dbCreate: validate
        url: jdbc:oracle:thin:@someserver:1521:TEST1
    dataSource3:
        pooled: true
        jmxExport: true
        logSql: true
        driverClassName: oracle.jdbc.OracleDriver
        username: MYUSER
        password: Password1
        dbCreate: validate
        url: jdbc:oracle:thin:@someserver:1521:PROD1

然后在域类的映射中指定映射中的数据源:

package plsutils

class DmjTypes {
    String code
    String description
    Date insertDate
    String insertUser
    Date modifyDate
    String modifyUser

    String dbEnv

    static mapping = {
        datasources(['dataSource1', 'dataSource2', 'dataSource3'])

        version false
        table name: "CDE_DMJ_TYPES", schema: "MYSCHEMA"

        id generator: 'sequence' ,params:[sequence: 'DMJTY_SEQ']

        columns {
            id column: "DMJTY_ID"
            code column: "DMJTY_CDE"
            description column: "DMJTY_DESCR"
            insertDate column: "INSERT_DTT"
            insertUser column: "INSERT_USER"
            modifyDate column: "MODIFY_DTT"
            modifyUser column: "MODIFY_USER"
            dbEnv formula:'( select inst.instance_name || \'-\' ||     inst.host_name from v$instance inst ) '
        }

    }
}

然后，在我的 Controller 中，我应该能够执行以下操作:

params.max = Math.min(max ?: 10, 100)
dmjTypesListDev = DmjTypes.dataSource1.list(params)
dmjTypesListTest = DmjTypes.dataSource2.list(params)
dmjTypesListProd = DmjTypes.dataSource3.list(params)

我在第一次通话时收到错误消息:

URI /dmjTypes/index
Class groovy.lang.MissingPropertyException
Message null
Caused by No such property: dataSource1 for class: plsutils.DmjTypes

我正在使用 ojdbc7.jar，连接到 Oracle 11g，我正在使用 Grails 3.0.9。

我不禁认为我在某处做了一些微妙的愚蠢的事情。谁能帮我解决这个问题？

干杯，
艾伦

Answer 1

基于 official documantation尝试 dataSources 关键字:

dataSources:
    dataSource:
        pooled: true
        jmxExport: true
        driverClassName: org.h2.Driver
        username: sa
        password:
    lookup:
        dialect: org.hibernate.dialect.MySQLInnoDBDialect
        driverClassName: com.mysql.jdbc.Driver
        username: lookup
        password: secret
        url: jdbc:mysql://localhost/lookup
        dbCreate: update

environments:
    development:
        dataSources:
            dataSource:
                dbCreate: create-drop
                url: jdbc:h2:mem:devDb;MVCC=TRUE;LOCK_TIMEOUT=10000;DB_CLOSE_ON_EXIT=FALSE
    test:
        dataSources:
            dataSource:
                dbCreate: update
                url: jdbc:h2:mem:testDb;MVCC=TRUE;LOCK_TIMEOUT=10000;DB_CLOSE_ON_EXIT=FALSE
    production:
        dataSources:
            dataSource:
                dbCreate: update
                url: jdbc:h2:prodDb;MVCC=TRUE;LOCK_TIMEOUT=10000;DB_CLOSE_ON_EXIT=FALSE
                properties:
                   jmxEnabled: true
                   initialSize: 5
                   …
            lookup:
                dialect: org.hibernate.dialect.Oracle10gDialect
                driverClassName: oracle.jdbc.driver.OracleDriver
                username: lookup
                password: secret
                url: jdbc:oracle:thin:@localhost:1521:lookup
                dbCreate: update