HttpClientUtil类


import com.alibaba.fastjson.JSONObject;
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.HttpPost;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

/**
 * @Author: yc
 * @Description:
 * @Date: 2021/07/27/18:32
 */
public class HttpClientUtil {

    public static String url = "http://192.168.8.247:3000/co/cmd/deleteProjectCmd";
    public static String username = "";
    public static String password = "";


    public static String projectTreeDeletePost(JSONObject json) throws IOException {
        String string = "";
        // 1.获取HttpClient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();

        // 2.声明post请求
        HttpPost httpPost = new HttpPost(url);
        // 3.设置请求头，为了安全，防止恶意攻击，在post请求中都限制了浏览器才能访问
        httpPost.addHeader("User-Agent", "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.107 Safari/537.36");
        httpPost.addHeader("Accept", "*/*");
        httpPost.addHeader("Accept-Encoding", "gzip, deflate, br");
//        httpPost.addHeader("Content-Type", "application/json");
        httpPost.addHeader("Content-Type", "application/x-www-form-urlencoded");
        httpPost.addHeader("Accept-Language", "zh-CN,zh;q=0.9,en;q=0.8");
        httpPost.addHeader("Connection", "keep-alive");
        // 设置token
        httpPost.addHeader("Authorization","eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJleHAiOjE2Mjc0NTQzODYsInVzZXJuYW1lIjoiYWJjZCJ9.MYvNg03txeNm_KiI27fdS0KViVxWhLntDjBjiP44UYQ");
        // 4.设置参数
        List<NameValuePair> parameters = new ArrayList<NameValuePair>(0);
        for(String key:json.keySet()) {
            parameters.add(new BasicNameValuePair(key, json.getString(key)));
        }
        UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(parameters, "UTF-8");
        httpPost.setEntity(formEntity);
        // json参数
        //httpPost.setEntity(new StringEntity(json.toString()));

        // 5.发送请求
        CloseableHttpResponse response = httpClient.execute(httpPost);
        if (response.getStatusLine().getStatusCode() == 200) {
            HttpEntity entity = response.getEntity();
            string = EntityUtils.toString(entity, "utf-8");
        }
        else
        {
            string = "操作失败";
            return string;
        }
        // 7.关闭资源
        response.close();
        httpClient.close();
        return string;
    }
}