HttpClient发送post，get请求-蒲公英云

HttpClient发送post，get请求

maven依赖：

<!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpcore -->
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpcore</artifactId>
            <version>4.4.10</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpclient -->
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>4.5.6</version>
        </dependency>

工具类：

package cn.com.dzqc.util;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.List;
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.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.impl.client.HttpClients;
import org.apache.http.message.BasicHeader;
import org.apache.http.util.EntityUtils;
import org.json.JSONObject;
/**
 * HttpClient工具类
 * 
 * @author 煕寳
 *
 */
public class HttpClientUtil {
     public static String sendGet(String s) {
            CloseableHttpClient httpClient = HttpClients.createDefault();
            StringBuilder entityStringBuilder = null;
            try {
                HttpGet get = new HttpGet(s);
                CloseableHttpResponse httpResponse = null;
                httpResponse = httpClient.execute(get);
                try {
                    HttpEntity entity = httpResponse.getEntity();
                    entityStringBuilder = new StringBuilder();
                    if (null != entity) {
                        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(httpResponse.getEntity().getContent(), "UTF-8"), 8 * 1024);
                        String line = null;
                        while ((line = bufferedReader.readLine()) != null) {
                            entityStringBuilder.append(line + "/n");
                        }
                    }
                } finally {
                    httpResponse.close();
                }
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                try {
                    if (httpClient != null) {
                        httpClient.close();
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return entityStringBuilder.toString();
        }
      /**
           * 发送POST请求
           * @param url
           * @param nameValuePairList
          * @return JSON或者字符串
           * @throws Exception
          */
          public static String sendPost(String url, List<NameValuePair> nameValuePairList) throws Exception{
              JSONObject jsonObject = null;
              CloseableHttpClient client = null;
              CloseableHttpResponse response = null;
                  String result ="";
              try{
                  /**
                   *  创建一个httpclient对象,相当于打开一个浏览器
                   */
                  client = HttpClients.createDefault();
                  /**
                  * 创建一个post对象
                   */
                 HttpPost post = new HttpPost(url);
                  /**
                   * 包装成一个Entity对象
                   */
                  StringEntity entity = new UrlEncodedFormEntity(nameValuePairList, "UTF-8");
                  /**
                  * 设置请求的内容
                   */
                  post.setEntity(entity);
                  /**
                   * 设置请求的报文头部的编码
                   */
                 post.setHeader(new BasicHeader("Content-Type", "application/x-www-form-urlencoded; charset=utf-8"));
                  /**
                   * 设置请求的报文头部的编码
                   */
                  post.setHeader(new BasicHeader("Accept", "text/plain;charset=utf-8"));
                 /**
                   * 执行post请求
                   */
                 response = client.execute(post);
                  /**
                      * 通过EntityUitls获取返回内容
                       */
                 result = EntityUtils.toString(response.getEntity(),"UTF-8");
              }catch (Exception e){
                 e.printStackTrace();
              }finally {
                response.close();
                 client.close();
              }
              return result;
          }
}