org.smartloli.kafka.eagle.common.util.HttpClientUtils.java Source code

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Here is the source code for org.smartloli.kafka.eagle.common.util.HttpClientUtils.java

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/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.smartloli.kafka.eagle.common.util;

import java.util.List;

import org.apache.http.HttpEntity;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Request http client,such as get or post etc.
 * 
 * @author smartloli.
 *
 *         Created by Jan 1, 2019
 */
public class HttpClientUtils {

    private static final Logger LOG = LoggerFactory.getLogger(HttpClientUtils.class);

    /**
     * Send request by get method.
     * 
     * @param uri:
     *            http://ip:port/demo?httpcode=200&name=smartloli
     */
    public static String doGet(String uri) {
        String result = "";
        try {
            CloseableHttpClient client = null;
            CloseableHttpResponse response = null;
            try {
                HttpGet httpGet = new HttpGet(uri);

                client = HttpClients.createDefault();
                response = client.execute(httpGet);
                HttpEntity entity = response.getEntity();
                result = EntityUtils.toString(entity);
            } finally {
                if (response != null) {
                    response.close();
                }
                if (client != null) {
                    client.close();
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
            LOG.error("Do get request has error, msg is " + e.getMessage());
        }
        return result;
    }

    /**
     * Send request by post method.
     * 
     * @param uri:
     *            http://ip:port/demo
     * @param parames:
     *            new BasicNameValuePair("code", "200")
     * 
     *            new BasicNameValuePair("name", "smartloli")
     */
    public static String doPostForm(String uri, List<BasicNameValuePair> parames) {
        String result = "";
        try {
            CloseableHttpClient client = null;
            CloseableHttpResponse response = null;
            try {

                HttpPost httpPost = new HttpPost(uri);
                httpPost.setEntity(new UrlEncodedFormEntity(parames, "UTF-8"));
                client = HttpClients.createDefault();
                response = client.execute(httpPost);
                HttpEntity entity = response.getEntity();
                result = EntityUtils.toString(entity);
            } finally {
                if (response != null) {
                    response.close();
                }
                if (client != null) {
                    client.close();
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
            LOG.error("Do post form request has error, msg is " + e.getMessage());
        }
        return result;
    }

    /**
     * Send request by post method.
     * 
     * @param uri:
     *            http://ip:port/demo
     */
    public static String doPostJson(String uri, String data) {
        String result = "";
        try {
            CloseableHttpClient client = null;
            CloseableHttpResponse response = null;
            try {
                HttpPost httpPost = new HttpPost(uri);
                httpPost.setHeader(HTTP.CONTENT_TYPE, "application/json");
                httpPost.setEntity(new StringEntity(data, ContentType.create("text/json", "UTF-8")));
                client = HttpClients.createDefault();
                response = client.execute(httpPost);
                HttpEntity entity = response.getEntity();
                result = EntityUtils.toString(entity);
            } finally {
                if (response != null) {
                    response.close();
                }
                if (client != null) {
                    client.close();
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
            LOG.error("Do post json request has error, msg is " + e.getMessage());
        }

        return result;
    }

}