Package com.guinetik.rr.util

Class StreamUtils

  • public final class StreamUtils
extends Object
    Utility class for safe input stream operations with proper resource management.

    This class provides static methods for reading input streams into strings, ensuring proper cleanup of resources even when exceptions occur.

    Reading Input Streams

    
 // Read an input stream to string
 InputStream is = connection.getInputStream();
 String content = StreamUtils.readInputStreamAsString(is);

 // Read error stream (returns null if unavailable)
 InputStream errorStream = connection.getErrorStream();
 String error = StreamUtils.readErrorStream(errorStream);
 if (error != null) {
     System.err.println("Error response: " + error);
 }

    Usage in HTTP Response Handling

    
 HttpURLConnection conn = (HttpURLConnection) url.openConnection();
 int status = conn.getResponseCode();

 if (status >= 200 && status < 300) {
     String body = StreamUtils.readInputStreamAsString(conn.getInputStream());
     // Process successful response
 } else {
     String error = StreamUtils.readErrorStream(conn.getErrorStream());
     // Handle error response
 }
    Since:
    1.0.0
    Author:
    guinetik <guinetik@gmail.com>

    • Method Detail

      • readInputStreamAsString

        public static String readInputStreamAsString​(InputStream is)
                                      throws IOException
        Reads an input stream into a string, handling resource cleanup properly. This method ensures the Scanner is properly closed after reading.
        Parameters:
        is - The input stream to read
        Returns:
        The string contents of the stream
        Throws:
        IOException - If an I/O error occurs

      • readErrorStream

        public static String readErrorStream​(InputStream errorStream)
        Attempts to read from an error stream, handling possible exceptions gracefully. This method ensures the Scanner is properly closed after reading.
        Parameters:
        errorStream - The error stream to read
        Returns:
        The string contents of the stream, or null if not available