Java HTTP Post post(String url, JsonNode body)

Description

post

License

Apache License

Declaration

public static String post(String url, JsonNode body) 

Method Source Code

//package com.java2s;
/*// ww w.j  a v  a 2  s  . com
 * Copyright 2016 Uncharted Software Inc.
 *
 * Licensed 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 com.fasterxml.jackson.databind.JsonNode;

import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;

import java.io.InputStream;

import java.net.HttpURLConnection;

import java.net.URL;

public class Main {
    public static String post(String url, JsonNode body) {
        return post(url, body.toString());
    }

    public static String post(String urlToRead, String postData) {
        URL url;
        HttpURLConnection conn;
        try {
            url = new URL(urlToRead);
            conn = (HttpURLConnection) url.openConnection();

            conn.setRequestMethod("POST");
            conn.setDoOutput(true);
            conn.setRequestProperty("Content-Type", "application/json");

            DataOutputStream wr = new DataOutputStream(conn.getOutputStream());
            wr.writeBytes(postData);
            wr.flush();
            wr.close();

            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            int nRead;
            byte[] data = new byte[16384];
            InputStream is = conn.getInputStream();
            while ((nRead = is.read(data, 0, data.length)) != -1) {
                buffer.write(data, 0, nRead);
            }
            buffer.flush();
            return buffer.toString();
        } catch (Exception e) {
            e.printStackTrace();
            System.err.println("Failed to read URL: " + urlToRead + " <" + e.getMessage() + ">");
        }
        return null;
    }
}

Related

1. httpPostText(String urlStr, String textString)
2. post(String json, String url)
3. post(String json, String url)
4. post(String rawUrl, String body)
5. post(String url, int timeout, Map header)
6. post(String url, Map params, String charset)
7. post(String url, String body, Map headers)
8. post(String url, String payload)
9. post(String url, String postdata, String cookie)