此类为使用 “deflate” 压缩格式压缩数据实现输出流过滤器
example
import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.util.zip.Deflater; import java.util.zip.DeflaterOutputStream; import java.util.zip.Inflater; import java.util.zip.InflaterOutputStream; public class DeflaterOutputStreamIO { private static String inPath = "D:\\a.bat"; private static String outPath = "D:\\b.bat"; public static void main(String[] args) throws Exception { // 压缩文件 deflater(inPath,outPath); // 解压文件 Inflater(outPath, "D:\\c.bat"); } /** * * @param outPath2 * 压缩后的文件 * @param str * 解压后的文件 * @throws Exception */ private static void Inflater(String outPath2, String str) throws Exception { FileInputStream fis = new FileInputStream(new File(outPath)); FileOutputStream fos = new FileOutputStream(new File(str)); InflaterOutputStream ios = new InflaterOutputStream(fos, new Inflater(true)); byte[] b = new byte[1024]; int len = 0; while ((len = fis.read(b)) != -1) { ios.write(b, 0, len); } fis.close(); ios.close(); } /** * * @param inPath * 原文件 * @param outPath * 压缩后的文件 * @throws Exception */ public static void deflater(String inPath, String outPath) throws Exception { FileInputStream fis = new FileInputStream(new File(inPath)); FileOutputStream fos = new FileOutputStream(new File(outPath)); DeflaterOutputStream dos = new DeflaterOutputStream(fos, new Deflater(9,true)); byte[] b = new byte[1024]; int len = 0; while ((len = fis.read(b)) != -1) { dos.write(b, 0, len); } fis.close(); dos.close(); } }