如何读取属性文件并使用项目Gradle脚本中的值？

我正在处理Gradle脚本，我需要读取local.properties文件并使用local.properties中属性文件中的build.gradle 。 我是以下面的方式做的。 我运行下面的脚本，它现在抛出一个错误，但它也没有做任何事情，如创建，删除和复制文件。 我试图打印变量的值，它显示正确的值。

如果这是正确的方法，有人可以告诉我吗？ 我认为另一种方法是在gradle.properties定义所有内容并在gradle.properties使用它。 有人可以告诉我如何从build.properties访问build.gradle的属性？

build.gradle文件：

 apply plugin: 'java' //-- set the group for publishing group = 'com.true.test' /** * Initializing GAVC settings */ def buildProperties = new Properties() file("version.properties").withInputStream { stream -> buildProperties.load(stream) } //if jenkins build, add the jenkins build version to the version. Else add snapshot version to the version. def env = System.getenv() if (env["BUILD_NUMBER"]) buildProperties.test+= ".${env["BUILD_NUMBER"]}" version = buildProperties.test println "${version}" //name is set in the settings.gradle file group = "com.true.test" version = buildProperties.test println "Building ${project.group}:${project.name}:${project.version}" Properties properties = new Properties() properties.load(project.file('build.properties').newDataInputStream()) def folderDir = properties.getProperty('build.dir') def configDir = properties.getProperty('config.dir') def baseDir = properties.getProperty('base.dir') def logDir = properties.getProperty('log.dir') def deployDir = properties.getProperty('deploy.dir') def testsDir = properties.getProperty('tests.dir') def packageDir = properties.getProperty('package.dir') def wrapperDir = properties.getProperty('wrapper.dir') sourceCompatibility = 1.7 compileJava.options.encoding = 'UTF-8' repositories { maven { url "http://arti.oven.c:9000/release" } } task swipe(type: Delete) { println "Delete $projectDir/${folderDir}" delete "$projectDir/$folderDir" delete "$projectDir/$logDir" delete "$projectDir/$deployDir" delete "$projectDir/$packageDir" delete "$projectDir/$testsDir" mkdir("$projectDir/${folderDir}") mkdir("projectDir/${logDir}") mkdir("projectDir/${deployDir}") mkdir("projectDir/${packageDir}") mkdir("projectDir/${testsDir}") } task prepConfigs(type: Copy, overwrite:true, dependsOn: swipe) { println "The name of ${projectDir}/${folderDir} and ${projectDir}/${configDir}" from('${projectDir}/${folderDir}') into('${projectDir}/$configDir}') include('*.xml') } 

build.properties文件：

 # ----------------------------------------------------------------- # General Settings # ----------------------------------------------------------------- application.name = Admin project.name = Hello Cool # ----------------------------------------------------------------- # ant build directories # ----------------------------------------------------------------- sandbox.dir = ${projectDir}/../.. reno.root.dir=${sandbox.dir}/Reno ant.dir = ${projectDir}/ant build.dir = ${ant.dir}/build log.dir = ${ant.dir}/logs config.dir = ${ant.dir}/configs deploy.dir = ${ant.dir}/deploy static.dir = ${ant.dir}/static package.dir = ${ant.dir}/package tests.dir = ${ant.dir}/tests tests.logs.dir = ${tests.dir}/logs external.dir = ${sandbox.dir}/FlexCommon/External external.lib.dir = ${external.dir}/libs 

Answer 1

如果使用默认的gradle.properties文件，则可以直接从build.gradle文件中访问属性：

gradle.properties ：

 applicationName=Admin projectName=Hello Cool 

build.gradle ：

 task printProps { doFirst { println applicationName println projectName } } 

如果您需要访问自定义文件，或访问包含的属性. 在它们中（因为看起来你需要这样做），你可以在build.gradle文件中执行以下操作：

 def props = new Properties() file("build.properties").withInputStream { props.load(it) } task printProps { doFirst { println props.getProperty("application.name") println props.getProperty("project.name") } } 

有关详细信息，请查看Gradle文档的此部分 。

编辑

如果您想动态设置其中一些属性（如下面的注释中所述），您可以创建一个properties.gradle文件（名称并不重要），并在build.gradle脚本中要求它。

properties.gradle ：

 ext { subPath = "some/sub/directory" fullPath = "$projectDir/$subPath" } 

build.gradle

 apply from: 'properties.gradle' // prints the full expanded path println fullPath 

Answer 2

我们可以使用一个单独的文件（在我的情况下为config.groovy ）来抽象出所有配置。 请注意我们如何分离出常见配置的逻辑：

config.groovy

 resources { serverName = 'localhost' serverPort = '8090' } environments { dev { serverName = 'http://localhost' serverPort = '8080' } test { serverName = 'http://www.testserver.com' serverPort = '5211' resources { serverName = 'resources.testserver.com' } } prod { serverName = 'http://www.productionserver.com' serverPort = '80' resources { serverName = 'resources.productionserver.com' serverPort = '80' } } } 

一旦属性文件准备就绪，我们可以在build.gradle使用以下build.gradle来加载这些设置：

build.gradle

 loadProperties() def loadProperties() { def environment = hasProperty('env') ? env : 'dev' println "Current Environment: " + environment def configFile = file('config.groovy') def config = new ConfigSlurper(environment).parse(configFile.toURL()) project.ext.config = config } task printProperties { println "serverName: $config.serverName" println "serverPort: $config.serverPort" println "resources.serverName: $config.resources.serverName" println "resources.serverPort: $config.resources.serverPort" } 

---

让我们用不同的输入集来运行它们：

1. gradle -q printProperties

    Current Environment: dev serverName: http://localhost serverPort: 8080 resources.serverName: localhost resources.serverPort: 8090 

2. gradle -q -Penv=dev printProperties

    Current Environment: dev serverName: http://localhost serverPort: 8080 resources.serverName: localhost resources.serverPort: 8090 

3. gradle -q -Penv=test printProperties

    Current Environment: test serverName: http://www.testserver.com serverPort: 5211 resources.serverName: resources.testserver.com resources.serverPort: 8090 

4. gradle -q -Penv=prod printProperties

    Current Environment: prod serverName: http://www.productionserver.com serverPort: 80 resources.serverName: resources.productionserver.com resources.serverPort: 80