Gradle - 从delav jar中提取文件 [英] Gradle - extract file from depended jar

问题描述

我想从取决于jasperreports.jar
的文件中提取文件default.jasperreports.properties，并将其放入带有新名称jasperreports.properties的zip分发版中。

示例gradle构建：
$ b

  apply plugin：'java'
 
任务zip（类型：Zip）{'src / dist'
 
 //来自configurations.runtime 
 from extractFileFromJar（default.jasperreports.properties）; 
重命名'default.jasperreports.properties'，'jasperreports.properties'
 
} 
 
 def extractFileFromJar（String fileName）{
 //配置。 runtime.files.each {file  - > println文件} //它不工作
 //未完成构建文件的一部分
 FileTree tree = zipTree（'someFile.zip'）
 FileTree filtered = tree.matching {
包括文件名
} 
 
} 
 
存储库{
 mavenCentral（）
} 
 
依赖关系{
 runtime'jasperreports：jasperreports：2.0.5'
} 
  

如何获取FileTree在上面的脚本中，我使用

  FileTree tree = zipTree（'someFile.zip'）
  

但想要使用某些想法（错误，但是可读的）

$ b

  FileTree tree = configurations.runtime.filter（jasperreports）。singleFile.zipTree 
  

---

PS：尝试拨打电话

  def extractFileFromJar（String fileName）{
 configurations.runtime.files.each {file  - > println文件} //它不工作
 ... 
  

但它不起作用除了

您不能更改未处于未解析状态的配置！

解决方案

这是一个可能的解决方案（有时候代码超过一千字）：

  apply plugin：java
 
 repositories {
 mavenCentral（）
} 
 
 configurations {
 jasper 
} 
 
依赖关系{
 jasper（'jasperreports：jasperreports：2.0.5'）{
 transitive = false 
} 
 
 
任务zip（类型：Zip）{'src / dist'
 
 //注意zipTree调用封装在闭包中，因此配置
 //仅在执行时解析$ {$ b $ from（{zipTree（configurations.jasper.singleFile）}）{
 include'default.jasperreports.properties'
 rename'defa ult.jasperreports.properties'，'jasperreports.properties'
} 
} 
  

I want to extract file "default.jasperreports.properties" from depended jasperreports.jar and put it in zip distribution with new name "jasperreports.properties"

Sample gradle build:

apply plugin: 'java'

task zip(type: Zip) {
    from 'src/dist'
  //  from configurations.runtime
    from extractFileFromJar("default.jasperreports.properties");
    rename 'default.jasperreports.properties', 'jasperreports.properties'

}

def extractFileFromJar(String fileName) {
    //    configurations.runtime.files.each { file -> println file} //it's not work 
    // not finished part of build file
    FileTree tree = zipTree('someFile.zip')
    FileTree filtered = tree.matching {
        include fileName
    }

}

repositories {
    mavenCentral()
}

dependencies {
    runtime 'jasperreports:jasperreports:2.0.5'
}

How to get FileTree in extractFileFromJar() from dependency jasperreports-2.0.5.jar?

In script above I use

FileTree tree = zipTree('someFile.zip')

but want to use somethink like (wrong, but human readable)

FileTree tree = configurations.runtime.filter("jasperreports").singleFile.zipTree

---

PS: Try to call

def extractFileFromJar(String fileName) {
    configurations.runtime.files.each { file -> println file} //it's not work 
...

but it doesn't work with exception

You can't change a configuration which is not in unresolved state!

解决方案

Here is a possible solution (sometimes code says more than a thousand words):

apply plugin: "java"

repositories {
    mavenCentral()
}

configurations {
    jasper
}

dependencies {
    jasper('jasperreports:jasperreports:2.0.5') { 
        transitive = false
    }
}

task zip(type: Zip) {
    from 'src/dist'
    // note that zipTree call is wrapped in closure so that configuration
    // is only resolved at execution time
    from({ zipTree(configurations.jasper.singleFile) }) {
        include 'default.jasperreports.properties'
        rename 'default.jasperreports.properties', 'jasperreports.properties'
    }
}

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