Java HTTP Post doPOST(HttpURLConnection conn, InputStream input)

Here you can find the source of doPOST(HttpURLConnection conn, InputStream input)

Description

do POST

License

Apache License

Declaration

public static String doPOST(HttpURLConnection conn, InputStream input) throws IOException 

Method Source Code


//package com.java2s;
/*//  w w  w  .  j av a2s  .c om
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;

public class Main {
    public static String doPOST(URL url, InputStream input) throws IOException {
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        try {
            String reply = doPOST(conn, input);
            if (conn.getResponseCode() != 200) {
                throw new IOException(reply);
            }
            return reply;
        } finally {
            conn.disconnect();
        }
    }

    public static String doPOST(HttpURLConnection conn, InputStream input) throws IOException {
        conn.setRequestMethod("POST");
        return call(conn, input);
    }

    public static String call(HttpURLConnection conn, InputStream input) throws IOException {
        conn.setConnectTimeout(30 * 1000);
        conn.setReadTimeout(30 * 1000);
        conn.setUseCaches(false);

        if (input != null) {
            conn.setDoOutput(true);

            OutputStream out = conn.getOutputStream();

            byte[] data = new byte[1024];
            int read = 0;
            while ((read = input.read(data, 0, data.length)) != -1) {
                out.write(data, 0, read);
            }

            input.close();

            out.flush();
            out.close();
        } else {
            conn.connect();
        }

        InputStream is = null;

        try {
            is = conn.getInputStream();
        } catch (IOException e) {
            is = conn.getErrorStream();
        }

        StringBuilder buf = new StringBuilder();
        BufferedReader in = new BufferedReader(new InputStreamReader(is));
        String inputLine;
        while ((inputLine = in.readLine()) != null) {
            System.out.println(inputLine);
            buf.append(inputLine);
        }
        in.close();

        return buf.toString();
    }
}

Related

  1. doHttpPost(URL url, String requestBody)
  2. doPost(String targetURL, String urlParameters, String contentType)
  3. doPost(String theURL, Map nameValuePairs)
  4. doPost(URL url, String body, String... args)
  5. executePost(String url, JSONObject data)