ZipInputStream檢查是否zip文件有效，纔去提取它

我們如何檢查是否zip文件損壞或有效的Zip文件將其解壓縮ZipInputStream檢查是否zip文件有效，纔去提取它

我code`

import java.io.IOException; 
import java.io.OutputStream; 
import java.util.zip.ZipEntry; 
import java.util.zip.ZipInputStream; 

public void unzip() { 
     FileInputStream fin = null; 
     ZipInputStream zin = null; 
     OutputStream fout = null; 

    File outputDir = new File(_location); 
    File tmp = null; 

    try { 
     fin = new FileInputStream(_zipFile); 
     zin = new ZipInputStream(fin); 
     ZipEntry ze = null; 
     while ((ze = zin.getNextEntry()) != null) { 
      Log.d("Decompress", "Unzipping " + ze.getName()); 

      if (ze.isDirectory()) { 
       dirChecker(ze.getName()); 
      } else { 
       tmp = File.createTempFile("decomp", ".tmp", outputDir); 
       fout = new BufferedOutputStream(new FileOutputStream(tmp)); 
       DownloadFile.copyStream(zin, fout, _buffer, BUFFER_SIZE); 
       zin.closeEntry(); 
       fout.close(); 
       fout = null; 
       tmp.renameTo(new File(_location + ze.getName())); 
       tmp = null; 
      } 
     } 
     zin.close(); 
     zin = null; 
    } catch (IOException e) { 
     throw new RuntimeException(e); 
    } finally { 
     if (tmp != null ) { try { tmp.delete();  } catch (Exception ignore) {;} } 
     if (fout != null) { try { fout.close();  } catch (Exception ignore) {;} } 
     if (zin != null ) { try { zin.closeEntry(); } catch (Exception ignore) {;} } 
     if (fin != null ) { try { fin.close();  } catch (Exception ignore) {;} } 
    } 
}

此之前，工作正常與有效的zipfile，但無效的zipfile它doesen't拋出任何異常不產生任何東西，但我需要在解壓縮之前確認zip文件的有效性

來源

2012-05-11 UdayaLakmal