com.zhuc.nupay.mcm.app.jbei.HttpApi.java Source code

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Here is the source code for com.zhuc.nupay.mcm.app.jbei.HttpApi.java

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/*
 * Copyright (C) 2014 Aron llc_xyz@qq.com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

package com.zhuc.nupay.mcm.app.jbei;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ContentType;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;

/**
 *
 * @author Aron llc_xyz@qq.com
 */
public class HttpApi {

    public String post(String url, List<NameValuePair> params) throws HttpApiException {
        CloseableHttpClient httpclient = HttpClients.createDefault();

        HttpPost httpPost = new HttpPost(url);
        //        List<NameValuePair> nvps = new ArrayList<NameValuePair>();
        //        nvps.add(new BasicNameValuePair("username", "admin"));
        //        nvps.add(new BasicNameValuePair("password", "admin"));
        //        // post?

        CloseableHttpResponse response = null;
        try {
            httpPost.setEntity(new UrlEncodedFormEntity(params));
            response = httpclient.execute(httpPost);
            HttpEntity entity = response.getEntity();
            if (entity != null) {
                // ??
                ContentType contentType = ContentType.getOrDefault(entity);
                Charset charset = contentType.getCharset();
                InputStream is = entity.getContent();
                // inputstreamreader???
                BufferedReader br = new BufferedReader(new InputStreamReader(is, charset));
                StringBuilder sb = new StringBuilder();
                String line = null;
                while ((line = br.readLine()) != null) {
                    sb.append(line + "\n");
                }

                is.close();
                //System.out.println(":->"+sb.toString());

                return sb.toString();
            } else {
                throw new HttpApiException("Empty Response from server");
            }

        } catch (IOException ex) {
            Logger.getLogger(HttpApi.class.getName()).log(Level.SEVERE, null, ex);

            throw new HttpApiException("Network Error", ex);

        } finally {
            try {
                if (response != null)
                    response.close();
            } catch (IOException ex) {
                Logger.getLogger(HttpApi.class.getName()).log(Level.SEVERE, null, ex);
            }
        }

    }
}