package com.ctrip.Test;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;
/**
* Gzip压缩解压的方法
*
*/
public class GzipUtil {
/**
* @param args
*/
/**
* gZip压缩方法
* */
public static byte[] gZip(byte[] data) {
byte[] b = null;
try {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
GZIPOutputStream gzip = new GZIPOutputStream(bos);
gzip.write(data);
gzip.finish();
gzip.close();
b = bos.toByteArray();
bos.close();
} catch (Exception ex) {
ex.printStackTrace();
}
return b;
}
/**
* gZip解压方法
* */
public static byte[] unGZip(byte[] data) {
byte[] b = null;
try {
ByteArrayInputStream bis = new ByteArrayInputStream(data);
GZIPInputStream gzip = new GZIPInputStream(bis);
byte[] buf = new byte[1024];
int num = -1;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
while ((num = gzip.read(buf, 0, buf.length)) != -1) {
baos.write(buf, 0, num);
}
b = baos.toByteArray();
baos.flush();
baos.close();
gzip.close();
bis.close();
} catch (Exception ex) {
ex.printStackTrace();
}
return b;
}
/**
* 将得到的返回结果进行处理，先BASE64解密，再Gzip解压
*
* @param responseContent
* @return
* @throws IOException
*/
public static String getResponse(String responseContent) throws IOException {
return new String(GzipUtil.unGZip(decodeBase64(responseContent
.getBytes("GBK"))), "UTF-8");
}
}