Java 字符串压缩ZIP GZIP

不废话 直接上代码

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 ZipStr {


	// 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();
	}
}