httputils.HttpUtil.java Source code

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Here is the source code for httputils.HttpUtil.java

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/**
 * Copyright 2012-2014 Ravello Systems, 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.
 */

package httputils;

import java.io.IOException;
import java.io.InputStream;
import java.io.StringReader;

import javax.json.Json;
import javax.json.JsonObject;
import javax.json.JsonReader;

import org.apache.http.HttpRequest;
import org.apache.http.HttpResponse;
import org.apache.http.ParseException;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.protocol.HttpClientContext;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.util.EntityUtils;

public class HttpUtil {

    public static void setJsonHeaders(HttpRequest req) {
        req.addHeader("Content-type", "application/json");
        req.addHeader("Accept", "application/json");
    }

    public static boolean verifyResponseWithoutConsuming(HttpResponse response) {
        return !(response.getStatusLine().getStatusCode() >= 400);
    }

    /**
     *
     * @param response
     * @return true if no error, false if error
     */
    public static boolean verifyResponseAndConsume(HttpResponse response) {
        boolean retVal = verifyResponseWithoutConsuming(response);
        EntityUtils.consumeQuietly(response.getEntity());

        return retVal;
    }

    public static JsonObject convertResponseToJson(HttpResponse response) throws ParseException, IOException {
        InputStream in = response.getEntity().getContent();
        JsonReader reader = Json.createReader(in);
        JsonObject jObj = reader.readObject();
        reader.close();
        in.close();

        return jObj;
    }

    public static JsonObject convertStringToJson(String jstring) {
        StringReader in = new StringReader(jstring);
        JsonReader reader = Json.createReader(in);
        JsonObject jObj = reader.readObject();
        reader.close();
        in.close();

        return jObj;
    }

    private static JsonObject convertSomethingToJson(InputStream is) {
        JsonReader reader = Json.createReader(is);
        JsonObject jObj = reader.readObject();
        reader.close();

        return jObj;
    }
}