java用IO流创建zip压缩文件

绝地灬酷狼 2024-02-19 17:00 45阅读 0赞

## 工具方法： ##

/**
    	 * 新建文件(.zip)
    	 * @param datas Map数组，key是文件名，byte[]是数据
    	 * @param output	输出流
    	 * @param charset	编码
    	 */
    	public static void zipStringToOutputStream(Map<String, byte[]> datas,
    			OutputStream output, String charset) {
    		ZipOutputStream zipout = new ZipOutputStream(new BufferedOutputStream(output));
    		Set<Entry<String, byte[]>> dataEntrys = datas.entrySet();
    		for (Entry<String, byte[]> data : dataEntrys) {
    			try {
    				Assert.hasText(data.getKey(), "写入文件对象为NULL或空");
    				Assert.notNull(data.getValue(), "写入文件【" + data.getKey() + "】的字符对象为NULL");
    				InputStream bufferIn = new BufferedInputStream( new ByteArrayInputStream(data.getValue()) );
    				byte[] bs = new byte[1024]; //容器1M
    				Arrays.fill(bs, (byte) 0);
    				zipout.putNextEntry(new ZipEntry(data.getKey()));//创建压缩文件内的文件
    				int len = -1;
    				while ((len = bufferIn.read(bs)) > 0) {//写入文件内容
    					zipout.write(bs, 0, len);
    				}
    				bufferIn.close();
    			} catch (Exception e) {
    				System.out.println("字符串ZIP流写入压缩文件【" + data.getKey() + "】失败，忽略该文件压缩：" + e.getMessage());
    			}
    		}
    		try {
    			zipout.close();
    		} catch (IOException e) {
    			System.out.println("ZIP流关闭异常：" + e.getMessage());
    		}
    	}

## 测试： ##

public static void main(String[] args) throws FileNotFoundException {
    		FileOutputStream fout = new FileOutputStream("F:/aaa.zip");
    		Map<String, byte[]> datas = new HashMap<String, byte[]>();
    		datas.put("111.txt", "asdasdadfasdgads".getBytes());
    		datas.put("222.txt", "asdasdadfasdgads".getBytes());
    		datas.put("333.txt", "asdasdadfasdgads".getBytes());
    		zipStringToOutputStream(datas , fout , "GBK");
    	}

## 结果： ##

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0RHSDI0MzAyODQ4MTc_size_16_color_FFFFFF_t_70][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0RHSDI0MzAyODQ4MTc_size_16_color_FFFFFF_t_70 1][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0RHSDI0MzAyODQ4MTc_size_16_color_FFFFFF_t_70 2][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0RHSDI0MzAyODQ4MTc_size_16_color_FFFFFF_t_70]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/29/460c499c15ae4f72a8cdf64bd45b9953.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0RHSDI0MzAyODQ4MTc_size_16_color_FFFFFF_t_70 1]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/29/012a923576df43f3b0a7ce78863e8e47.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0RHSDI0MzAyODQ4MTc_size_16_color_FFFFFF_t_70 2]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/29/7f708727a67b444487f397968b3175ab.png