Android实现压缩字符串的方法示例

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;
public class StrZipUtil {
 /**
  * @param input 需要压缩的字符串
  * @return 压缩后的字符串
  * @throws IOException IO
  */
 public static String compress(String input) throws IOException {
  if (input == null || input.length() == 0) {
   return input;
  }
  ByteArrayOutputStream out = new ByteArrayOutputStream();
  GZIPOutputStream gzipOs = new GZIPOutputStream(out);
  gzipOs.write(input.getBytes());
  gzipOs.close();
  return out.toString("ISO-8859-1");
 }
 /**
  * @param zippedStr 压缩后的字符串
  * @return 解压缩后的
  * @throws IOException IO
  */
 public static String uncompress(String zippedStr) throws IOException {
  if (zippedStr == null || zippedStr.length() == 0) {
   return zippedStr;
  }
  ByteArrayOutputStream out = new ByteArrayOutputStream();
  ByteArrayInputStream in = new ByteArrayInputStream(zippedStr
    .getBytes("ISO-8859-1"));
  GZIPInputStream gzipIs = new GZIPInputStream(in);
  byte[] buffer = new byte[256];
  int n;
  while ((n = gzipIs.read(buffer)) >= 0) {
   out.write(buffer, 0, n);
  }
  // toString()使用平台默认编码，也可以显式的指定如toString("GBK")
  return out.toString();
 }
}

08-09 13:16:53.388 32248-32267/com.rustfisher.ndkproj D/rustApp: 开始存入数据库 ori1 len=304304
08-09 13:16:53.418 32248-32267/com.rustfisher.ndkproj D/rustApp: 已存入数据库 ori1 len=304304 , 耗时约37 ms
08-09 13:16:53.418 32248-32267/com.rustfisher.ndkproj D/rustApp: 开始压缩 ori1 len=304304
08-09 13:16:53.438 32248-32267/com.rustfisher.ndkproj D/rustApp: 压缩完毕 zip1 len=1112 , 耗时约19 ms
08-09 13:16:53.438 32248-32267/com.rustfisher.ndkproj D/rustApp: 存压缩后的数据进数据库 zip1.length=1112
08-09 13:16:53.448 32248-32267/com.rustfisher.ndkproj D/rustApp: 压缩后的数据已进数据库 zip1.length=1112 , 耗时约8 ms
08-09 13:16:53.448 32248-32267/com.rustfisher.ndkproj D/rustApp: 解压开始
08-09 13:16:53.488 32248-32267/com.rustfisher.ndkproj D/rustApp: 解压完毕 耗时约36 ms

08-09 10:38:42.759 23075-23109/com.rustfisher D/rustApp: 开始压缩 ori1 len=304304
08-09 10:38:42.764 23075-23109/com.rustfisher D/rustApp: 压缩完毕 zip1 len=1112
08-09 10:38:42.764 23075-23109/com.rustfisher D/rustApp: 解压开始
08-09 10:38:42.789 23075-23109/com.rustfisher D/rustApp: 解压完毕