BE THE CODER > Java > Zip Utilities > Read File From Zip File

The following example shows how to read a file from zip file. It iterates through all zip file entries until the exact file name match is found. It also shows how to convert stream to string.

File Name :	com/bethecoder/tutorials/utils/zip/ReadFromZipFile.java
Author :	Sudhakar KV
Email :	[email protected]


package com.bethecoder.tutorials.utils.zip;



import java.io.BufferedReader;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.util.zip.ZipEntry;

import java.util.zip.ZipInputStream;



public class ReadFromZipFile {



  /**

   * @param args

   * @throws IOException 

   */

  public static void main(String[] args) {



    String srcZipFilePath = "C:\\abc.zip";

    String fileToRead = "TWO/FOUR/FIVE/abc.txt";

    

    readFromZipFile(srcZipFilePath, fileToRead);

  }

  

  public static void readFromZipFile(

      String srcZipFilePath, String fileToRead) {

    

    try {

      InputStream in = new FileInputStream(srcZipFilePath);

      ZipInputStream zin = new ZipInputStream(in);

      ZipEntry entry = null;

      String fileContent = null;

      

      while ((entry = zin.getNextEntry()) != null) {

        

        if (entry.getName().equals(fileToRead)) {

          fileContent = streamToString(zin);

          System.out.println("Found matching file : " + fileToRead);

          System.out.println("----------------------------------------");

          System.out.println(fileContent);

          break;

        } else {

          System.out.println("No match found : " + entry.getName());

        }

        

        zin.closeEntry();

      }

      

      zin.close();

      

    } catch (FileNotFoundException e) {

      e.printStackTrace();

    } catch (IOException e) {

      e.printStackTrace();

    }

      

  }

  

  public static String streamToString(InputStream inputStream) {

    

    StringBuilder sb = new StringBuilder();

    BufferedReader br;



    try {

      br = new BufferedReader(new InputStreamReader(inputStream));

      String line;

      

      while ((line = br.readLine()) != null) {      

        sb.append(line).append("\n");

      }

      

    } catch (Exception e) {

      e.printStackTrace();

    }

        

    return sb.toString();

  }

}