java - 将二进制值转换为可下载的 zipfile

Question

我有一个场景，我必须将二进制数据转换为 zipfile，我必须在 java 中下载它。

我对如何将二进制文件转换为 zipformate 感到震惊。任何帮助将不胜感激。

Answer 1

您可以按照下面的示例代码将二进制数据文件转换为 zipfile：

import java.io.File;  
import java.io.FileInputStream;  
import java.io.FileOutputStream;  
import java.util.zip.ZipEntry;  
import java.util.zip.ZipInputStream;  
import java.util.zip.ZipOutputStream;  

class ZipTest {    
    public static void zip(String zipFileName, String inputFile)  
            throws Exception {  
        File f = new File(inputFile);  
        ZipOutputStream out = new ZipOutputStream(new FileOutputStream(  
                zipFileName));  
        zip(out, f, f.getName());  
        System.out.println("zip done");  
        out.close();  
    }  

    private static void zip(ZipOutputStream out, File f, String base)  
            throws Exception {  
        out.putNextEntry(new ZipEntry(base));  
        FileInputStream in = new FileInputStream(f);  
        int b;  
        while ((b = in.read()) != -1)  
            out.write(b);  
        in.close();  
    }  

    public static void main(String[] args) {  
        try {  
            ZipTest t = new ZipTest();  
            t.zip("c:\\test.zip", "c:\\1.txt");  
        } catch (Exception e) {  
            e.printStackTrace(System.out);  
        }  
    }  
} 

Answer 2

使用此示例将 InputStream 转换为 ZipInputStream：

FileInputStream fin = new FileInputStream(args[i]);
      ZipInputStream zin = new ZipInputStream(fin);
      ZipEntry ze = null;
      while ((ze = zin.getNextEntry()) != null) {
        System.out.println("Unzipping " + ze.getName());
        FileOutputStream fout = new FileOutputStream(ze.getName());
        for (int c = zin.read(); c != -1; c = zin.read()) {
          fout.write(c);
        }
        zin.closeEntry();
        fout.close();
      }
      zin.close();