Pack multiple excel sheets into one zip file

The previous article explained how to generate an excel file. In this chapter, let's talk about how to package multiple excel files into a compressed package.

First look at the main function:

public static void main(String[] args) throws IOException {
		try {
			File file1 = new File("students1.xls");
			File file2 = new File("students2.xls");
			File file3 = new File("students3.xls");
			//Create three files and put them in the list
			ArrayList list = new ArrayList();
			list.add(file1);
			list.add(file2);
			list.add(file3);
			//Create a temporary archive
			File file = new File("e:/certpics.rar");
			  //create file input and output stream
			FileOutputStream fous = new FileOutputStream(file);   
			  /** For the packaging method, we will use an output stream such as ZipOutputStream*/
	        ZipOutputStream zipOut= new ZipOutputStream(fous);
	         //Enter the packaging method
	        zipFile(list, zipOut);
	        zipOut.close();
	        fous.close();
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace ();
		}
	}

The main function contains a zipFile() method, which will be shown to you next:

	  /**
	     * Pack all accepted files into a compressed package
	     */
	    @SuppressWarnings("rawtypes")
		public static void zipFile(List files,ZipOutputStream outputStream) {
	        int size = files.size();
	        for(int i = 0; i < size; i++) {
	            File file = (File) files.get(i);
	            zipFile(file, outputStream);
	        }
	    }

There is a zipFile() function in the above function. Note that this is the parameter of the method, but it is different.

/**
	     * Pack the file according to the input file and output stream
	     * @param File
	     * @param org.apache.tools.zip.ZipOutputStream
	     */
	    public static void zipFile(File inputFile,ZipOutputStream ouputStream) {
	    	System.out.println(inputFile.getName());
	    	try {
				ZipEntry entry1 = new ZipEntry(inputFile.getName());
				ouputStream.putNextEntry(entry1);
			} catch (IOException e1) {
				// TODO Auto-generated catch block
				e1.printStackTrace();
			}
	        
	    }

After running, you can go to your e drive to find the compressed package called certpics.rar.