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如何在Grails脚本中建立休眠会话

gant groovy grails hibernate

4

dstnbrkr · 技术社区 · 15 年前

以下Grails脚本:

// Import.groovy

includeTargets << grailsScript("Bootstrap")

target(main: "Import some data...") {
    depends(bootstrap)

    def Channel = grailsApp.classLoader.loadClass("content.Channel")

    def c 

    // works: saving a valid Channel succeeds
    c = Channel.newInstance(title:"A Channel", slug:"a-channel", position:0).validate()

    // doesn't work: saving an invalid Channel fails with exception
    c = Channel.newInstance().validate()

    // this line is never reached due to exception
    println(c.errors)

}

setDefaultTarget(main)

失败,但有例外:

执行脚本导入时出错:org.hibernate.hibernateexception:没有绑定到线程的休眠会话,并且配置不允许在此处创建非事务性会话

当对无效的域对象调用validate()时。当验证失败时,我想输出错误消息,但是似乎我需要建立一个休眠会话才能这样做。有人知道如何克服这个问题吗?

2 回复 | 直到 13 年前

1

3

dstnbrkr 15 年前

发现 RunScript.groovy 它为您设置休眠会话,然后运行指定为参数的脚本。我必须将源代码从甘特脚本(上面)改为简单的:

// Import.groovy

def Channel = grailsApp.classLoader.loadClass("content.Channel")

def c 
c = Channel.newInstance(title:"A Channel", slug:"a-channel", position:0).validate()
c = Channel.newInstance().validate()
println(c.errors)

我可以这样运行它:

$>grails运行脚本/import.groovy

2

0

cowabunga1984 13 年前

我在做这样的事,这对我很有用…

// Import.groovy

includeTargets << grailsScript("Bootstrap")

target(main: "Import some data...") {
    depends(bootstrap)

    // added this ------------------------------------------------------
    def sessionFactory = appCtx.getBean("sessionFactory")
    def session = SessionFactoryUtils.getSession(sessionFactory, true)
    TransactionSynchronizationManager.bindResource(
        sessionFactory, new SessionHolder(session))
    // added this ------------------------------------------------------

    def Channel = grailsApp.classLoader.loadClass("content.Channel")

    def c 

    // works: saving a valid Channel succeeds
    c = Channel.newInstance(title:"A Channel", slug:"a-channel", position:0).validate()

    // doesn't work: saving an invalid Channel fails with exception
    c = Channel.newInstance().validate()

    // this line is never reached due to exception
    println(c.errors)

}

setDefaultTarget(main)