org.openo.nfvo.emsdriver.northbound.client.HttpClientUtil.java Source code

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Here is the source code for org.openo.nfvo.emsdriver.northbound.client.HttpClientUtil.java

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/**
 * Copyright 2017 BOCO Corporation.
 *
 * 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 org.openo.nfvo.emsdriver.northbound.client;

import java.io.IOException;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpDelete;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.util.EntityUtils;

/*
 * HttpClient post request
 */
public class HttpClientUtil {

    private static Log log = LogFactory.getLog(HttpClientUtil.class);

    public static String doPost(String url, String json, String charset) {
        CloseableHttpClient httpClient = null;
        HttpPost httpPost = null;
        String result = null;
        try {
            httpClient = HttpClientFactory.getSSLClientFactory();
            httpPost = new HttpPost(url);
            if (null != json) {
                StringEntity s = new StringEntity(json);
                s.setContentEncoding("UTF-8");
                s.setContentType("application/json"); // set contentType
                httpPost.setEntity(s);
            }
            CloseableHttpResponse response = httpClient.execute(httpPost);
            try {
                if (response != null) {
                    HttpEntity resEntity = response.getEntity();
                    if (resEntity != null) {
                        result = EntityUtils.toString(resEntity, charset);
                    }
                }
            } catch (Exception e) {
                log.error("httpClient.execute(httpPost) is fail", e);
            } finally {
                if (response != null) {
                    response.close();
                }
            }
        } catch (Exception e) {
            log.error("doPost is fail ", e);
        } finally {
            if (httpClient != null) {
                try {
                    httpClient.close();
                } catch (IOException e) {
                }
            }

        }
        return result;
    }

    public static String doDelete(String url, String charset) {
        CloseableHttpClient httpClient = null;
        HttpDelete httpDelete = null;
        String result = null;
        try {
            httpClient = HttpClientFactory.getSSLClientFactory();
            httpDelete = new HttpDelete(url);

            CloseableHttpResponse response = httpClient.execute(httpDelete);

            try {
                if (response != null) {
                    HttpEntity resEntity = response.getEntity();
                    if (resEntity != null) {
                        result = EntityUtils.toString(resEntity, charset);
                    }
                }
            } catch (Exception e) {
                log.error("", e);
            } finally {
                if (response != null) {
                    response.close();
                }
            }
        } catch (Exception e) {
            log.error("doDelete is fail ", e);
        } finally {
            if (httpClient != null) {
                try {
                    httpClient.close();
                } catch (IOException e) {
                }
            }
        }
        return result;
    }

    public static String doGet(String url, String charset) {
        CloseableHttpClient httpClient = null;
        HttpGet httpGet = null;
        String result = null;
        try {
            httpClient = HttpClientFactory.getSSLClientFactory();
            httpGet = new HttpGet(url);

            CloseableHttpResponse response = httpClient.execute(httpGet);

            try {
                if (response != null) {
                    HttpEntity resEntity = response.getEntity();
                    if (resEntity != null) {
                        result = EntityUtils.toString(resEntity, charset);
                    }
                }
            } catch (Exception e) {
                log.error("", e);
            } finally {
                if (response != null) {
                    response.close();
                }
            }
        } catch (Exception e) {
            log.error("doGet is fail ", e);
        } finally {
            if (httpClient != null) {
                try {
                    httpClient.close();
                } catch (IOException e) {
                }
            }
        }
        return result;
    }

}