我们正在使用Java代码执行Web服务。 Web服务响应来自Web服务提供商，格式为gzip。收到响应后，我们将使用GZIPInputStream解压缩响应。
响应被转换为字节码，然后作为输入传递给gzipinputstream。该代码在Eclipse中运行良好，并且能够解压缩响应字符串。相同的代码在Linux中不起作用，并且在将字节数组传递给gzipinputstream时抛出错误“ Not in Gzip format”。
我们检查了Windows中默认的字符集为Windows-1252，而Linux中的默认字符集为UTF-8。因此，我们尝试获取UTF-8和Windows-1252中的字节。两者都不起作用。
任何人都可以帮助我哪里出了问题以及如何解决该问题？
试图在生成响应的字节码时更改字符集。
import java.util.List;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.Authenticator;
import java.net.HttpURLConnection;
import java.net.InetSocketAddress;
import java.net.PasswordAuthentication;
import java.net.Proxy;
import java.net.URL;
import java.io. * ;
import java.nio.charset.*;
import java.util.zip.GZIPInputStream;
import java.nio.charset.*;
public class WSConnectTest {
public final static String UserName = null; //User id login for Fusion
public final static String instanceURL = null;
public final static String USER_PWD = null; // API key shared by CSOD
private static final String PROXY_URL = null; //UBS proxy URL
private static final int PROXY_PORT = 8080;
private static final String PROXY_USERNAME = "USER_NAME";
private static final String PROXY_PASSWORD = "PASSWORD";
final static String USER_AGENT = "Mozilla/5.0";
static Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress(
PROXY_URL, PROXY_PORT));
static {
Authenticator authenticator = new Authenticator() {
public PasswordAuthentication getPasswordAuthentication() {
return (new PasswordAuthentication(UserName, USER_PWD.toCharArray()));
}
};
Authenticator.setDefault(authenticator);
}
public static void main(String[] args) throws Exception {
FusionConnect fusionconnect = new FusionConnect();
String theURL = instanceURL + "<RESOURCE_NAME>";
System.out.println("The URL to be called is : " + theURL);
String json = "<JSON_STRING>"
String post_param = new String(json.toString());
System.out.println("The json is :" + json);
PostRequestWithFilter(theURL, post_param);
}
private static void PostRequestWithFilter(String url, String json) throws Exception {
try {
URL obj = new URL(url);
HttpURLConnection con = (HttpURLConnection) obj.openConnection(proxy);
con.setRequestMethod("POST");
con.setRequestProperty("User-Agent", "Apache-HttpClient/4.1.1 (java 1.5)");
con.setRequestProperty("Content-Type", "application/json");
con.setRequestProperty("Accept-Language", "UTF-8");
con.setRequestProperty("Accept-Encoding", "gzip, deflate");
con.setDoOutput(true);
con.setConnectTimeout(15000);
System.out.println("get content type :"+con.getRequestProperties());
DataOutputStream wr = new DataOutputStream(con.getOutputStream());
wr.writeBytes(json);
wr.flush();
wr.close();
int responseCode = con.getResponseCode();
System.out.println("\nSending 'POST' request to URL : " + url);
System.out.println("\nResponse Code : " + responseCode);
System.out.println("\nResponse message : " + con.getResponseMessage());
String inputLine;
StringBuffer response = new StringBuffer();
String ResponseStr = null;
byte[] bresponse = new byte[1024];
String deoutput = null;
BufferedReader in =null;
if (responseCode == con.HTTP_CREATED) { in =new BufferedReader(new InputStreamReader(con.getInputStream()));
while ((inputLine = in.readLine()) != null) {
response.append(inputLine);
System.out.println("Response received from Fusion string buffer :"+inputLine);
} in .close();
ResponseStr = response.toString();
System.out.println("response string :"+ResponseStr);
bresponse = ResponseStr.getBytes("UTF-8");
System.out.println("Response received from Fusion Bytes :"+bresponse);
deoutput = unzip(bresponse);
System.out.println("Decompressed response :"+deoutput);
} else { in =new BufferedReader(new InputStreamReader(con.getErrorStream()));
System.out.println("Response Content Type :"+con.getContentType());
System.out.println("Response Content Encoding :"+con.getContentEncoding());
while ((inputLine = in.readLine()) != null) {
response.append(inputLine+"\r");
System.out.println("Response received from Fusion string buffer :"+inputLine);
}
in .close();
ResponseStr = response.toString();
System.out.println("response string :"+response);
bresponse = ResponseStr.getBytes();
for (int i=0; i < bresponse.length; i++)
{
System.out.println("byte code :"+i+" "+bresponse[i]);
}
System.out.println("Response received from Fusion Bytes :"+Charset.defaultCharset()+bresponse);
deoutput = unzip(bresponse);
FileOutputStream fos = new FileOutputStream("fileName1.gz");
DataOutputStream outStream = new DataOutputStream(new BufferedOutputStream(fos));
outStream.writeUTF(ResponseStr);
outStream.close();
System.out.println("Decompressed response :"+deoutput);
}
}
catch(Exception e) {
e.printStackTrace();
}
}
public static String unzip(byte[] compressed) {
if ((compressed == null) || (compressed.length == 0)) {
System.out.println("The response is empty");
throw new IllegalArgumentException("Cannot unzip null or empty bytes");
}
if (!isZipped(compressed)) {
System.out.println("The response is not zipped");
return new String(compressed);
}
StringBuilder output = new StringBuilder();
try (ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(compressed)) {
System.out.println("After byte array input stream :");
try (GZIPInputStream gzipInputStream = new GZIPInputStream(byteArrayInputStream)) {
try (InputStreamReader inputStreamReader = new InputStreamReader(byteArrayInputStream, StandardCharsets.UTF_8)){
try (BufferedReader bufferedReader = new BufferedReader(inputStreamReader)) {
String line;
System.out.println("buffer reader :"+bufferedReader.readLine());
while ((line = bufferedReader.readLine()) != null) {
output.append(line);
System.out.println("line :"+output.toString());
}
} catch(IOException e) {
throw new RuntimeException("Failed to read bufferedReader content", e);
}
}
}
} catch(Exception e) {
e.printStackTrace();
}
return output.toString();
}
public static boolean isZipped(final byte[] compressed) {
System.out.println("(byte)(GZIPInputStream.GZIP_MAGIC) is "+(byte)(GZIPInputStream.GZIP_MAGIC));
System.out.println("gzip magic is "+(byte)(GZIPInputStream.GZIP_MAGIC >> 8));
return (compressed[0] == (byte)(GZIPInputStream.GZIP_MAGIC)) && (compressed[1] == (byte)(GZIPInputStream.GZIP_MAGIC >> 8));
}
}