Java HTTP Response readResponse(URLConnection conn)

Description

read Response

License

Open Source License

Declaration

public static String readResponse(URLConnection conn) throws Exception 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.io.*;
import java.net.*;

public class Main {
    public static boolean printHeaders = false;

    public static String readResponse(URLConnection conn) throws Exception {
        BufferedReader in;//from  w  w  w.j a v a  2s  . c  o  m
        StringBuffer response = new StringBuffer();
        String line;

        try {
            in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
        } catch (Exception ex) {
            InputStream err = ((HttpURLConnection) conn).getErrorStream();
            if (err == null) {
                System.err.println("Headers: " + getResponseHeaders(conn));
                throw ex;
            }
            in = new BufferedReader(new InputStreamReader(err));
        }

        if (printHeaders)
            response.append(getResponseHeaders(conn));

        while ((line = in.readLine()) != null)
            response.append(line + "\n");

        in.close();

        return response.toString();
    }

    public static String getResponseHeaders(URLConnection conn) {
        StringBuffer headers = new StringBuffer();
        String key;
        int n = 1;

        headers.append("\n----------\n");
        while ((key = conn.getHeaderFieldKey(n)) != null) {
            String value = conn.getHeaderField(n);
            headers.append(key + ": " + value + "\n");
            n++;
        }

        headers.append("----------\n");
        return headers.toString();
    }
}

Related

1. getResponseText(URL constructedUrl, String encoding)
2. getResposeText(HttpURLConnection connection)
3. readResponse(HttpURLConnection conn, String encoding)
4. readResponse(HttpURLConnection connection)
5. readResponse(HttpURLConnection httpURLConnection)