httpclient post表单提交+去除ssl认证

import com.csoft.api.constants.PublicConstant;
import fastjson.JSONArray;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.X509Certificate;
import java.util.HashMap;
import java.util.Map;


/**
 * httpclient
 */
public class HttpUtils {
   

    private static final Logger logger = LoggerFactory.getLogger(HttpUtils.class);
//去除ssl认证
    static {
   
        try {
   
            trustAllHttpsCertificates();
            HttpsURLConnection.setDefaultHostnameVerifier
                    (
                            (urlHostName, session) -> true
                    );
        } catch (Exception e) {
   
        }
    }

    private static void trustAllHttpsCertificates()
            throws NoSuchAlgorithmException, KeyManagementException {
   
        TrustManager[] trustAllCerts = new TrustManager[1];
        trustAllCerts[0] = new TrustAllManager();
        SSLContext sc = SSLContext.getInstance("SSL");
        sc.init(null, trustAllCerts, null);
        HttpsURLConnection.setDefaultSSLSocketFactory(
                sc.getSocketFactory());
    }

    private static class TrustAllManager
            implements X509TrustManager {
   
        public X509Certificate[] getAcceptedIssuers() {
   
            return null;
        }

        public void checkServerTrusted(X509Certificate[] certs,
                                       String authType) {
   
        }

        public void checkClientTrusted(X509Certificate[] certs,
                                       String authType) {
   
        }
    }

//去除ssl认证

    /**
     * Send a get request
     *
     * @param url
     * @return response
     * @throws IOException
     */
    static public String get(String url) throws IOException {
   
        return get(url, null);
    }

    /**
     * Send a get request
     *
     * @param url     Url as string
     * @param headers Optional map with headers
     * @return response   Response as string
     * @throws IOException
     */
    static public String get(String url,
                             Map<String, String> headers) throws IOException {
   
        return fetch("GET", url, null, headers);
    }

    /**
     * Send a post request
     *
     * @param url     Url as string
     * @param body    Request body as string
     * @param headers Optional map with headers
     * @return response   Response as string
     * @throws IOException
     */
    static public String post(String url,