如何从gradle构建更改属性文件中的值

时间:2017-11-24 05:34:53

标签: gradle build.gradle

我是Gradle的新手。我正在使用Eclipse Buildship 2.1.1。我想在源代码中包含的属性文件中包含构建时间戳。我在build.gradle中做了类似的事情,

war {
    def propertyFile = file 
    "src/main/java/com/about/About.properties"
    def props = new Properties()
    propertyFile.withReader { props.load(it) }
    println "Before setProperty:"
    println props.getProperty('releaseDate')
    props.setProperty('releaseDate', new Date().format('yyyy-MM-dd-HH:mm:ss'))
 // propertyFile.withWriter { props.store(it) }
    println "After setProperty:"
    println props.getProperty('releaseDate')
    buildDir = new File(rootProject.projectDir, "gradleBuild/" + project.name)
}

这会正确打印以下详细信息,

Before setProperty:
2017-11-22T19:28
After setProperty:
2017-11-24-10:53:57

但这并没有反映在属性文件本身中。如果删除propertyFile.withWriter { props.store(it) }的评论,则会抛出错误,

No signature of method: java.util.Properties.store() is applicable for argument types: (java.io.BufferedWriter) values: [java.io.BufferedWriter@9a24ce]
  Possible solutions: store(java.io.OutputStream, java.lang.String), store(java.io.Writer, java.lang.String), sort(), sort(java.util.Comparator), sort(groovy.lang.Closure), size()

这种做法是对的还是我应该以其他方式做到这一点?

1 个答案:

答案 0 :(得分:1)

您必须将属性写回文件才能更新文件。行propertyFile.withWriter { props.store(it) }抛出错误,因为store方法需要2个参数。第二个参数是在文件顶部添加的注释,但如果您不需要,则可以是null

propertyFile.withWriter { props.store(it, null) }