摇篮 - 从依赖罐子

Question

我想从依赖jasperreports.jar 解压文件“default.jasperreports.properties”，并把它用新名称“jasperreports.properties”

样品gradle这个构建zip分发解压文件：

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' 
} 

如何从依赖项jasperreports-2.0.5.jar中的extractFileFromJar（）中获取FileTree？

在上面的脚本我用

FileTree tree = zipTree('someFile.zip') 

，但要使用somethink像（错了，但人类可读）

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

---

PS：尝试调用

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

但它不适用于例外

您不能更改未处于未解决状态的配置！

Answer 1

这里是一个可能的解决方案（有时代码说，超过一万字）：

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' 
    } 
} 

Answer 2

替代解决方案：

configurations { 
    batch 
} 

dependencies { 
    batch 'org.springframework.batch:spring-batch-core:3.0.8.RELEASE' { 
     transitive = false 
    } 
} 

def extractBatchSql(path) { 
    def zipFile = configurations.batch.find { it =~ /spring-batch-core/ } 
    def zip = new java.util.zip.ZipFile(zipFile) 
    def entry = zip.getEntry(path) 
    return zip.getInputStream(entry).text 
} 

task tmp() { 
    dependsOn configurations.batch 

    doLast { 
     def delSql = extractBatchSql("org/springframework/batch/core/schema-drop-oracle10g.sql") 
     println delSql 
    } 
}