Java压缩字符串

Java中压缩字符串的最高效方法是使用GZIP压缩算法。可以使用Java库中的java.util.zip.GZIPOutputStream和java.util.zip.GZIPInputStream类进行压缩和解压缩操作。下面是一个示例代码：

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Base64;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;

public class StringCompressionUtils {
    public static String compress(String str) throws IOException {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        GZIPOutputStream gzipOut = new GZIPOutputStream(baos);
        gzipOut.write(str.getBytes());
        gzipOut.finish();
        gzipOut.close();
        return Base64.getEncoder().encodeToString(baos.toByteArray());
    }

    public static String decompress(String compressedData) throws IOException {
        byte[] input = Base64.getDecoder().decode(compressedData);
        ByteArrayInputStream bais = new ByteArrayInputStream(input);
        GZIPInputStream gzipIn = new GZIPInputStream(bais);
        byte[] buffer = new byte[1024];
        int len;
        StringBuilder sb = new StringBuilder();
        while ((len = gzipIn.read(buffer)) > 0) {
            sb.append(new String(buffer, 0, len));
        }
        gzipIn.close();
        return sb.toString();
    }

    public static void main(String[] args) throws IOException {
        String originalString = "bd88uuExz+O6y3ua3Etw1p056QuGUwvRZM/t0x30zq765YxmPw/FJcuJ5rcu5udnG3L0SSdIz+u5733B0bPPOzx9AB712OPAAAINY4+b2Mst8TsCszrWZN3h0xx1PsA1NADIxllridwFjACNgAAAAADUmgZ1fhKzbsBpW8Mdc1sFc6AAAAzllrjy5/sBuACKAAAKM5Za7MA3Hk122gCsAAAAJxhjdTieIks+TDdnF8UEa+2TPKYY71v9LZMtWzt2APtlMs+nLHHV5XpnV1a59gF6RJnv5Lhq8eVxxkt1OaAWN/Dcc5lxeLq7b1j8Xx3pmpOdQHC9a9MmJ0TG4/P8Utx4vitySSSdoCVX//2Q==";
        System.out.println("原始长度:"+originalString.length());
        String compressedData = StringCompressionUtils.compress(originalString);
        System.out.println("压缩后长度:"+compressedData.length());
        System.out.println(compressedData);
        String decompressedString = StringCompressionUtils.decompress(compressedData);
        System.out.println("解压后长度:"+decompressedString.length());
        System.out.println("是否相等:"+originalString.equals(decompressedString));
    }
}

当然也可以将字符串压缩成短链接形式，要将字符串压缩成短链接形式，可以使用一些开源的 URL 短链接服务（例如 bit.ly、TinyURL 等）。这些服务会自动将给定的 URL 缩短为较短的字符串形式。