Java HTTP Get Json getJSON(String url)

Description

get JSON

License

Apache License

Declaration

public static JsonNode getJSON(String url) throws IOException 

Method Source Code

//package com.java2s;
/*//from  w ww.  ja v  a 2s .  c  o m
 * 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 com.fasterxml.jackson.databind.ObjectMapper;
import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;
import java.net.HttpURLConnection;

import java.net.URL;

public class Main {
    public static JsonNode getJSON(String url) throws IOException {
        ObjectMapper mapper = new ObjectMapper();
        String jsonStr = get(url);
        return mapper.readTree(jsonStr);
    }

    public static String get(String url) throws IOException {
        URL obj = new URL(url);
        HttpURLConnection con = (HttpURLConnection) obj.openConnection();

        // optional default is GET
        con.setRequestMethod("GET");

        BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
        String inputLine;
        StringBuffer response = new StringBuffer();

        while ((inputLine = in.readLine()) != null) {
            response.append(inputLine);
        }
        in.close();

        return response.toString();
    }
}

Related

1. getJSON(HttpURLConnection conn)
2. getJSON(URL url)