使用HttpClient怎么发送java对象到服务器，很多新手对此不是很清楚，为了帮助大家解决这个难题，下面小编将为大家详细讲解，有这方面需求的人可以来学习下，希望你能有所收获。

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一、首先导入apache依赖的pom文件包

 org.apache.httpcomponents  httpclient

二、创建JavaBean实体类对象

public class FulFillMent implements BaseModel {  /**   * shopify内部订单物理位置ID   */  private Long location_id;  /**   * 运单号   */  private String tracking_number;  /**   * 快递公司   */  private String tracking_company;  /**   * shopify平台内部商品id   */  private List line_items;  public Long getLocation_id() {    return location_id;  }  public void setLocation_id(Long location_id) {    this.location_id = location_id;  }  public String getTracking_number() {    return tracking_number;  }  public void setTracking_number(String tracking_number) {    this.tracking_number = tracking_number;  }  public String getTracking_company() {    return tracking_company;  }  public void setTracking_company(String tracking_company) {    this.tracking_company = tracking_company;  }  public List getLine_items() {    return line_items;  }  public void setLine_items(List line_items) {    this.line_items = line_items;  }}

三、这里封装一个上传到服务器的Utils工具类

package com.glbpay.ivs.common.util.https;import com.alibaba.fastjson.JSON;import org.apache.http.HttpEntity;import java.io.InputStream;import java.io.OutputStream;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.methods.CloseableHttpResponse;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.HttpClientBuilder;import org.apache.http.util.EntityUtils;import java.io.IOException;import java.net.HttpURLConnection;import java.net.MalformedURLException;import java.net.URL;public class NewHttpClient {  public static String doPost(String url, Object myclass) {    CloseableHttpClient httpClient = HttpClientBuilder.create().build();    HttpPost posturl = new HttpPost(url);    String result = null;    String jsonSting = JSON.toJSONString(myclass);    StringEntity entity = new StringEntity(jsonSting, "UTF-8");    posturl.setEntity(entity);    posturl.setHeader("Content-Type", "application/json;charset=utf8");    // 响应模型    CloseableHttpResponse response = null;    try {      // 由客户端执行(发送)Post请求+6      response = httpClient.execute(posturl);      // 从响应模型中获取响应实体      HttpEntity responseEntity = response.getEntity();      System.out.println("响应状态为:" + response.getStatusLine());      if (responseEntity != null) {        System.out.println("响应内容长度为:" + responseEntity.getContentLength());        System.out.println("响应内容为:" + EntityUtils.toString(responseEntity));        return EntityUtils.toString(responseEntity);      }    } catch (ClientProtocolException e) {      e.printStackTrace();    } catch (Exception e) {      e.printStackTrace();    } finally {      try {        // 释放资源        if (httpClient != null) {          httpClient.close();        }        if (response != null) {          response.close();        }      } catch (IOException e) {        e.printStackTrace();      }    }   return null;  }  public static String dourl(String url,Object clzz){    try {      String jsonString = JSON.toJSONString(clzz);      URL url1 = new URL(url);      HttpURLConnection conn = (HttpURLConnection) url1.openConnection();      //设置允许输出      conn.setDoOutput(true);      //设置允许输入      conn.setDoInput(true);      //设置不用缓存      conn.setUseCaches(false);      conn.setRequestMethod("POST");      //设置传递方式      conn.setRequestProperty("contentType", "application/json");      // 设置维持长连接      conn.setRequestProperty("Connection", "Keep-Alive");      // 设置文件字符集:      conn.setRequestProperty("Charset", "UTF-8");      //开始请求      byte[] bytes = jsonString.toString().getBytes();      //写流      OutputStream stream = conn.getOutputStream();      stream.write(bytes);      stream.flush();      stream.close();      int resultCode=conn.getResponseCode();       if(conn.getResponseCode()==200){       InputStream inputStream = conn.getInputStream();       byte[] bytes1 = new byte[inputStream.available()];       inputStream.read(bytes1);       //转字符串       String s = new String(bytes);       System.out.println(s);         return s;     }else {         //获取响应内容         int code = conn.getResponseCode();         String responseMessage = conn.getResponseMessage();         System.out.println(code);         String s = String.valueOf(code);         return "响应状态码是:"+s+"响应内容是：======="+responseMessage;       }    } catch (MalformedURLException e) {      e.printStackTrace();    } catch (IOException e) {      e.printStackTrace();    }         return null;  }}

开始调用

FulFillMentModel fulFillMentModel = new FulFillMentModel();FulFillMent fulfillment = new FulFillMent();fulfillment.setLocation_id(order.getLocationId());fulfillment.setTracking_number(order.getTrackingNo());fulfillment.setTracking_company(order.getChannelCode());fulfillment.setLine_items(lineItemList);fulFillMentModel.setFulfillment(fulfillment);String url = String.format("https://%s:%s@stuushop-com.myshopify.com/admin/api/2019-07/orders/%s/fulfillments.json", settingModel.getAppKey(), settingModel.getPassword(), order.getLastOrderId());logger.info("shopify平台请求地址：{}，请求数据:{}", url, JsonUtils.bean2json(fulFillMentModel));String s = NewHttpClient.doPost(url,fulFillMentModel);logger.info("shopify平台返回数据:{}", JsonUtils.bean2json(s));

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