java 調用企查查API查詢企業信息

效果圖：

首先需要設置token，API中要求token的格式爲key+Timespan+SecretKey組成的32位md5加密的大寫字符串，所以我也附贈了MD5加密的工具類。token要放在http的header 頭中，所以我在get請求的工具類中增加了一個header。

    //添加header 頭
                httpGet.setHeader("Token",token);
                httpGet.setHeader("Timespan",timeSpan);

權限驗證所提到的key，SecretKey均可在“我的接口”中查詢到

下面附上代碼。

HttpClientUtil ：HTTP請求的工具類。裏面封裝好了，get、post 有無參數的請求情況。

package dlighttop.apitest.apitest;

 import java.io.IOException;
 import java.net.URI;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;

 import org.apache.http.Header;
 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.HttpGet;
 import org.apache.http.client.methods.HttpPost;
 import org.apache.http.client.utils.URIBuilder;
 import org.apache.http.entity.ContentType;
 import org.apache.http.entity.StringEntity;
 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;

 public class HttpClientUtil {

 /**
 * 帶參數的get請求
 * @param url
 * @param param
 * @return String
 */
 public static String doGet(String url, Map<String, String> param) {
 // 創建Httpclient對象
 CloseableHttpClient httpclient = HttpClients.createDefault();

 String resultString = "";
 CloseableHttpResponse response = null;
 try {
 // 創建uri
 URIBuilder builder = new URIBuilder(url);

 if (param != null) {
 for (String key : param.keySet()) {
 builder.addParameter(key, param.get(key));
 }
 }
 URI uri = builder.build();
 // 創建http GET請求
 HttpGet httpGet = new HttpGet(uri);
 // 執行請求
 response = httpclient.execute(httpGet);
 // 判斷返回狀態是否爲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;
 }


 /**
 * 帶參數的get請求
 * @param url
 * @param param
 * @return String
 */
 public static String doGet(String url,String token,String timeSpan,Object o) {
 // 創建Httpclient對象
 CloseableHttpClient httpclient = HttpClients.createDefault();

 String resultString = "";
 CloseableHttpResponse response = null;
 try {
 // 創建uri
 URIBuilder builder = new URIBuilder(url);


 URI uri = builder.build();
 // 創建http GET請求
 HttpGet httpGet = new HttpGet(uri);
 //添加header 頭
 httpGet.setHeader("Token",token);
 httpGet.setHeader("Timespan",timeSpan);
 // 執行請求
 response = httpclient.execute(httpGet);
 // 判斷返回狀態是否爲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;
 }


 //
 // /**
 // * 不帶參數的get請求
 // * @param url
 // * @return String
 // */
 // public static String doGet(String url) {
 // return doGet(url, null);
 // }

 /**
 * 不帶參數的get請求
 *
 * @param s
 * @param url
 * @return String
 */
 public static String doGet(String url, String token, String timeSpan) {
 return doGet(url, token,timeSpan,null);
 }

 /**
 * 帶參數的post請求
 * @param url
 * @param param
 * @return String
 */
 public static String doPost(String url, Map<String, String> param) {
 // 創建Httpclient對象
 CloseableHttpClient httpClient = HttpClients.createDefault();
 CloseableHttpResponse response = null;
 String resultString = "";
 try {
 // 創建Http Post請求
 HttpPost httpPost = new HttpPost(url);
 // 創建參數列表
 if (param != null) {
 List<NameValuePair> paramList = new ArrayList<>();
 for (String key : param.keySet()) {
 paramList.add(new BasicNameValuePair(key, param.get(key)));
 }
 // 模擬表單
 UrlEncodedFormEntity entity = new UrlEncodedFormEntity(paramList);
 httpPost.setEntity(entity);
 }
 // 執行http請求
 response = httpClient.execute(httpPost);
 resultString = EntityUtils.toString(response.getEntity(), "utf-8");
 } catch (Exception e) {
 e.printStackTrace();
 } finally {
 try {
 response.close();
 } catch (IOException e) {
 e.printStackTrace();
 }
 }
 return resultString;
 }

 /**
 * 不帶參數的post請求
 * @param url
 * @return String
 */
 public static String doPost(String url) {
 return doPost(url, null);
 }

 /**
 * 傳送json類型的post請求
 * @param url
 * @param json
 * @return String
 */
 public static String doPostJson(String url, String json) {
 // 創建Httpclient對象
 CloseableHttpClient httpClient = HttpClients.createDefault();
 CloseableHttpResponse response = null;
 String resultString = "";
 try {
 // 創建Http Post請求
 HttpPost httpPost = new HttpPost(url);
 // 創建請求內容
 StringEntity entity = new StringEntity(json, ContentType.APPLICATION_JSON);
 httpPost.setEntity(entity);
 // 執行http請求
 response = httpClient.execute(httpPost);
 resultString = EntityUtils.toString(response.getEntity(), "utf-8");
 } catch (Exception e) {
 e.printStackTrace();
 } finally {
 try {
 response.close();
 } catch (IOException e) {
 e.printStackTrace();
 }
 }
 return resultString;
 }
 }

MD5Util:MD5加密的工具類。網上找的。生成32位大寫MD5碼

package dlighttop.apitest.apitest;

 import java.security.MessageDigest;

 /**
 * 
 * Description:
 * 
 * 
 * Copyright: Copyright (c)2015
 * 
 * 
 * Company: tope
 * 
 * 
 * Created Date :2015-7-27
 * 
 *
 * @author zhangfeng
 * @version 1.0
 */
 public class MD5Util {

 public final static String MD5(String s) {

 char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
 try {
 byte[] btInput = s.getBytes();
 // 獲得MD5摘要算法的 MessageDigest 對象
 MessageDigest mdInst = MessageDigest.getInstance("MD5");
 // 使用指定的字節更新摘要
 mdInst.update(btInput);
 // 獲得密文
 byte[] md = mdInst.digest();
 // 把密文轉換成十六進制的字符串形式
 int j = md.length;
 char str[] = new char[j * 2];
 int k = 0;
 for (int i = 0; i < j; i++) {
 byte byte0 = md[i];
 str[k++] = hexDigits[byte0 >>> 4 & 0xf];
 str[k++] = hexDigits[byte0 & 0xf];
 }
 return new String(str);
 } catch (Exception e) {
 e.printStackTrace();
 return null;
 }
 }

 public static void main(String[] args) {
 System.out.println(MD5("123456").toUpperCase());
 }
 }

程序的入口，這裏因爲時間比較緊，所以寫的比較亂。。。

package dlighttop.apitest.apitest;

 import dlighttop.core.utils.MD5Util;
 import java.util.Date;

 public class identityCheck {
 public static boolean identityCheck(String token,String timeStamp){
 System.out.println("-----------------開始調用--------------->");
 System.out.println("token"+token);
 String key = "263d5d33**b54b2da7d7a2742fc17828";
 String keyword = "阿里巴巴";
 //企業關鍵字模糊查詢
 String url = "http://api.qichacha.com/ECIV4/Search?key=" + key + "&dtype=json" + "&keyword=" + keyword;
 //企業關鍵字獲取詳細信息
 // String url = "http://api.qichacha.com/ECIV4/GetBasicDetailsByName?key=" + key + "&dtype=json" + "&keyword=" + keyword;
 System.out.println("請求url:" + url);
 boolean match = false; //是否匹配
 try {
 String result = HttpClientUtil.doGet(url,token,timeStamp);
 System.out.println("請求結果：" + result);
 } catch (Exception e) {
 e.printStackTrace();
 }
 System.out.println("<-----------------調用結束---------------");
 return match;
 }

 public static void main(String[] args) throws Exception{
 String key = "263d5d338cb54b2d**d7a2742fc17828";
 int secondTimestamp = getSecondTimestamp(new Date()); //精確到秒的時間戳
 String secretKey ="B24B271A56A3**F16B6B73FFF64D80B2"; //密鑰
 String token = MD5Util.MD5(key+secondTimestamp+secretKey); //token:驗證加密值（key+Timespan+SecretKey組成的32位md5加密的大寫字符串）
 System.out.println(token);
 identityCheck(token,secondTimestamp+"");
 }

 /**
 * 獲取精確到秒的時間戳
 * @return
 */
 public static int getSecondTimestamp(Date date){
 if (null == date) {
 return 0;
 }
 String timestamp = String.valueOf(date.getTime());
 int length = timestamp.length();
 if (length > 3) {
 return Integer.valueOf(timestamp.substring(0,length-3));
 } else {
 return 0;
 }
 }
 }

最後打個寫好的包，記錄一下，方便自己也方便大家。嘿嘿~
————————————————
版權聲明：本文爲CSDN博主「小楊丿」的原創文章，遵循 CC 4.0 BY-SA 版權協議，轉載請附上原文出處鏈接及本聲明。
原文鏈接：https://blog.csdn.net/qq_39425958/article/details/97401110

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