gradle - Gradle插件执行命令

Question

我已经写了这个gradle文件

group 'com.abhi'
version '1.0-SNAPSHOT'

apply plugin: 'java'
apply plugin: 'org.flywaydb.flyway'

sourceCompatibility = 1.8

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'org.flywaydb:flyway-gradle-plugin:3.2.1'
        classpath 'org.jooq:jooq-codegen:3.7.1'
        classpath 'com.h2database:h2:1.4.177'
    }
}

repositories {
    mavenCentral()
}

dependencies {
    compile group: 'org.jooq', name: 'jooq', version: '3.7.1'
    compile group: 'org.jooq', name: 'jooq-meta', version: '3.7.1'
    compile group: 'org.jooq', name: 'jooq-codegen', version: '3.7.1'
    runtime group: 'com.h2database', name: 'h2', version: '1.4.177'
}

flyway {
    url = 'jdbc:h2:file:target/foobar'
    user = 'sa'
}

def writer = new StringWriter()
def xml = new groovy.xml.MarkupBuilder(writer)
        .configuration('xmlns': 'http://www.jooq.org/xsd/jooq-codegen-3.7.0.xsd') {
    jdbc() {
        driver('org.h2.Driver')
        url('dbc:h2:file:target/foobar')
        user('sa')
        password('')
    }
    generator() {
        database() {
        }
        generate() {
        }
        target() {
            packageName('com.abhi.jooq.models')
            directory('src/main/java')
        }
    }
}

// Run the code generator
// ----------------------
org.jooq.util.GenerationTool.generate(
        javax.xml.bind.JAXB.unmarshal(new StringReader(writer.toString()), org.jooq.util.jaxb.Configuration.class)
)

当我说 gradle compile时会引发异常

Could not load schemata
java.lang.NullPointerException
    at org.jooq.impl.MetaImpl.meta(MetaImpl.java:120)
    at org.jooq.impl.MetaImpl.getCatalogs(MetaImpl.java:143)
    at org.jooq.impl.MetaImpl.getSchemas(MetaImpl.java:168)
    at org.jooq.util.jdbc.JDBCDatabase.getSchemasFromMeta(JDBCDatabase.java:135)
    at org.jooq.util.jdbc.JDBCDatabase.getSchemata0(JDBCDatabase.java:124)
    at org.jooq.util.AbstractDatabase.getSchemata(AbstractDatabase.java:279)

我认为问题在于脚本底部的代码在“flyway”插件之前执行了很多。

有没有办法确保仅在flyway插件执行后才执行以下代码？

Answer 1

是的，如果您认为问题出在执行顺序上，则可以像处理其他任何任务一样修改它。看看flyway plugin的文档。据此，此插件向您的构建脚本中添加了一些额外的任务，例如，一个任务是:flywayMigrate，flywayClean等。您可以根据此插件中的任务来执行任何任务(使用dependsOn选项)，并使它们仅运行插件的工作完成后。