Java字符串压缩和解压缩代码，java字符串解压缩,package com.

Java字符串压缩和解压缩代码，java字符串解压缩,package com.

package com.util;import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.IOException;import java.util.zip.GZIPInputStream;import java.util.zip.GZIPOutputStream;// 将一个字符串按照zip方式压缩和解压缩public class ZipUtil {  // 压缩  public static String compress(String str) throws IOException {    if (str == null || str.length() == 0) {      return str;    }    ByteArrayOutputStream out = new ByteArrayOutputStream();    GZIPOutputStream gzip = new GZIPOutputStream(out);    gzip.write(str.getBytes());    gzip.close();    return out.toString("ISO-8859-1");  }  // 解压缩  public static String uncompress(String str) throws IOException {    if (str == null || str.length() == 0) {      return str;    }    ByteArrayOutputStream out = new ByteArrayOutputStream();    ByteArrayInputStream in = new ByteArrayInputStream(str        .getBytes("ISO-8859-1"));    GZIPInputStream gunzip = new GZIPInputStream(in);    byte[] buffer = new byte[256];    int n;    while ((n = gunzip.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();  }  // 测试方法  public static void main(String[] args) throws IOException {      //测试字符串      String str="%5B%7B%22lastUpdateTime%22%3A%222011-10-28+9%3A39%3A41%22%2C%22smsList%22%3A%5B%7B%22liveState%22%3A%221";      System.out.println("原长度："+str.length());        System.out.println("压缩后："+ZipUtil.compress(str).length());      System.out.println("解压缩："+ZipUtil.uncompress(ZipUtil.compress(str)));  }}

                                运行结果:

原长度：104

压缩后：95