java通用post请求

package com.example.climbnumber.yzm;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import org.apache.http.HttpResponse;
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.util.EntityUtils;
public class Test04 {

    public static void main(String[] args) {
        JSONObject jsonObject = JSONObject.parseObject("{/n" +
                "  /"body/": {/n" +
                "    /"uuid/": /"/",/n" +
                "    /"scenes/": /"xxxx(91522301MA6DJJYG2C)/"/n" +
                "  },/n" +
                "  /"head/": {/n" +
                "    /"transCode/": /"/",/n" +
                "    /"traceId/": /"/"/n" +
                "  }/n" +
                "}");
        JSONObject result = sendPost("www.baidu.com",jsonObject);
        System.out.println("================================");
        System.out.println(result.toJSONString());
    }


    public static JSONObject sendPost(String url,JSONObject param){
        //定义接收数据
        JSONObject result = new JSONObject();
        HttpPost httpPost = new HttpPost(url);
        CloseableHttpClient client = HttpClients.createDefault();
        //请求参数转JOSN字符串
        StringEntity entity = new StringEntity(param.toJSONString(), "UTF-8");
        entity.setContentEncoding("UTF-8");
        entity.setContentType("application/json");
        httpPost.setEntity(entity);
        try {
            HttpResponse response = client.execute(httpPost);
            if (response.getStatusLine().getStatusCode() == 200) {
                result = JSON.parseObject(EntityUtils.toString(response.getEntity(), "UTF-8"));
            }
        } catch (Exception e) {
            e.printStackTrace();
            result.put("error", "连接错误！");
        }
        return result;
    }

}