uk.ac.ebi.atlas.utils.HttpRequest.java Source code

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Here is the source code for uk.ac.ebi.atlas.utils.HttpRequest.java

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/*
 * Copyright 2008-2012 Microarray Informatics Team, EMBL-European Bioinformatics Institute
 *
 * 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.
 *
 *
 * For further details of the Gene Expression Atlas project, including source code,
 * downloads and documentation, please see:
 *
 * http://gxa.github.com/gxa
 */

package uk.ac.ebi.atlas.utils;

import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;

import java.io.IOException;
import java.io.InputStream;
import java.util.List;

public final class HttpRequest {

    private HttpRequest() {
    }

    public static InputStream httpPost(org.apache.http.client.HttpClient httpClient, String url,
            List<? extends NameValuePair> params) throws IOException {
        HttpPost httpPost = new HttpPost(url);
        httpPost.setEntity(new UrlEncodedFormEntity(params, "UTF-8"));
        HttpResponse response = httpClient.execute(httpPost);

        int statusCode = response.getStatusLine().getStatusCode();
        if (statusCode == HttpStatus.SC_OK) {
            return response.getEntity().getContent();
        }
        throw new IOException(
                "Server returned invalid response: [status_code = " + statusCode + "; url = " + url + "]");
    }

}