groovy – 修改zipfile条目的文件内容

我想更新位于zipfile内的文本文件的内容.

我无法找到如何执行此操作,以下代码无法正常工作.

谢谢你的帮助!!

import java.util.zip.ZipFile
import java.util.zip.ZipEntry
import java.util.zip.ZipOutputStream

String zipFileFullPath = "C:/path/to/myzipfile/test.zip"

ZipFile zipFile = new ZipFile(zipFileFullPath) 
ZipEntry entry = zipFile.getEntry ( "someFile.txt" )

if(entry){
    InputStream input = zipFile.getInputStream(entry)
    BufferedReader br = new BufferedReader(new InputStreamReader(input,"UTF-8"))

    String s = null
    StringBuffer sb = new StringBuffer()

    while ((s=br.readLine())!=null){
         sb.append(s)
    }

    sb.append("adding some text..")


     ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFileFullPath))
     out.putNextEntry(new ZipEntry("someFile.txt"));

     int length


     InputStream fin = new ByteArrayInputStream(sb.toString().getBytes("UTF8"))

     while((length = fin.read(sb)) > 0)
     {
            out.write(sb,length)
     }             

     out.closeEntry()

}

解决方法

只是对@Opal的答案进行了一些细微的修改,我只是：

>尽可能使用groovy方法
>打包方法

Groovy Snippet

void updateZipEntry(String zipFile,String zipEntry,String newContent){
    def zin = new ZipFile(zipFile)
    def tmp = File.createTempFile("temp_${System.nanoTime()}",'.zip')
    tmp.withOutputStream { os ->
        def zos = new ZipOutputStream(os)
        zin.entries().each { entry ->
            def isReplaced = entry.name == zipEntry
            zos.putNextEntry(isReplaced ? new ZipEntry(zipEntry) : entry)
            zos << (isReplaced ? newContent.getBytes('UTF8') : zin.getInputStream(entry).bytes )
            zos.closeEntry()
        }
        zos.close()
    }
    zin.close()
    assert new File(zipFile).delete()
    tmp.renameTo(zipFile)
}

用法

updateZipEntry('/tmp/file.zip','Meta-INF/web.xml','<foobar>new content!</foobar>')

groovy – 修改zipfile条目的文件内容

解决方法

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