jar包如何利用IDEA实现生成

package com.demo;

import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

import java.io.IOException;
import java.net.URI;
import java.util.HashMap;
import java.util.Map;

public class Main {
  public static void main(String[] args) {
    String url = "http://www.baidu.com";
    String result = doHttpGet(url, new HashMap<>());
    System.out.println(result);
  }

  public static String doHttpGet(String url, Map<String, String> param) {
    // 创建Httpclient对象
    CloseableHttpClient httpclient = HttpClients.createDefault();

    String resultString = "";
    CloseableHttpResponse response = null;
    try {
      // 创建uri
      URIBuilder builder = new URIBuilder(url);
      if (param != null) {
        for (String key : param.keySet()) {
          builder.addParameter(key, param.get(key));
        }
      }
      URI uri = builder.build();
      // 创建http GET请求
      HttpGet httpGet = new HttpGet(uri);
      // 执行请求
      response = httpclient.execute(httpGet);
      // 判断返回状态是否为200
      if (response.getStatusLine().getStatusCode() == 200) {
        resultString = EntityUtils.toString(response.getEntity(), "UTF-8");
      }
    } catch (Exception e) {
      e.printStackTrace();
    } finally {
      try {
        if (response != null) {
          response.close();
        }
        httpclient.close();
      } catch (IOException e) {
        e.printStackTrace();
      }
    }
    return resultString;
  }
}