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app/src/main/java/com/gh/common/util/GzipUtils.java

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+package com.gh.common.util;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.zip.GZIPInputStream;
+import java.util.zip.GZIPOutputStream;
+
+public class GzipUtils {
+
+	private final static int BUFFER = 1024;
+
+	/*
+	 * 数据压缩
+	 */
+	public static void compress(InputStream is, OutputStream os)
+			throws IOException {
+		GZIPOutputStream gos = null;
+		try {
+			gos = new GZIPOutputStream(os);
+			int count;
+			byte data[] = new byte[BUFFER];
+			while ((count = is.read(data, 0, BUFFER)) != -1) {
+				gos.write(data, 0, count);
+			}
+			gos.flush();
+			gos.finish();
+			gos.close();
+		} finally {
+			if (gos != null) {
+				gos.close();
+			}
+		}
+	}
+
+	/*
+	 * 数据解压缩
+	 */
+	public static void decompress(InputStream is, OutputStream os)
+			throws IOException {
+		GZIPInputStream gis = null;
+		try {
+			gis = new GZIPInputStream(is);
+			int count;
+			byte data[] = new byte[BUFFER];
+			while ((count = gis.read(data, 0, BUFFER)) != -1) {
+				os.write(data, 0, count);
+			}
+		} finally {
+			if (gis != null) {
+				gis.close();
+			}
+		}
+	}
+
+	public static byte[] compressBytes(byte[] compressed) {
+		ByteArrayInputStream bais = null;
+		ByteArrayOutputStream baos = null;
+		try {
+			bais = new ByteArrayInputStream(compressed);
+			baos = new ByteArrayOutputStream();
+			compress(bais, baos);
+			return baos.toByteArray();
+		} catch (IOException e) {
+			e.printStackTrace();
+			return compressed;
+		} finally {
+			if (bais != null) {
+				try {
+					bais.close();
+				} catch (IOException e) {
+					e.printStackTrace();
+				}
+			}
+			if (baos != null) {
+				try {
+					baos.close();
+				} catch (IOException e) {
+					e.printStackTrace();
+				}
+			}
+		}
+	}
+
+	public static byte[] decompressBytes(byte[] compressed) {
+		ByteArrayInputStream bais = null;
+		ByteArrayOutputStream baos = null;
+		try {
+			bais = new ByteArrayInputStream(compressed);
+			baos = new ByteArrayOutputStream();
+			decompress(bais, baos);
+			return baos.toByteArray();
+		} catch (IOException e) {
+			e.printStackTrace();
+			return compressed;
+		} finally {
+			if (bais != null) {
+				try {
+					bais.close();
+				} catch (IOException e) {
+					e.printStackTrace();
+				}
+			}
+			if (baos != null) {
+				try {
+					baos.close();
+				} catch (IOException e) {
+					e.printStackTrace();
+				}
+			}
+		}
+	}
+}