Java实现京东联盟API数据获取功能 Java实现京东联盟API数据获取功

一：api参数
【Java实现京东联盟API数据获取功能】京东联盟提供了一个SDK的包下载好加入到项目中，SDK封装了api的调用方法，代码就是每个api的调用实例如下把申请的四个参数填好就行。

String SERVER_URL = "https://api.jd.com/routerjson"; String accessToken = null; String appKey = ""; String appSecret = ""; JdClient client=new DefaultJdClient(SERVER_URL,accessToken,appKey,appSecret); UnionOpenGoodsJingfenQueryRequest request=new UnionOpenGoodsJingfenQueryRequest(); JFGoodsReq goodsReq=new JFGoodsReq(); goodsReq.setEliteId(1); request.setGoodsReq(goodsReq); request.setVersion("1.0"); UnionOpenGoodsJingfenQueryResponse response=client.execute(request); System.out.println(response);

加入俩个依赖。

org.codehaus.jacksonjackson-mapper-asl1.9.2 org.codehaus.jacksonjackson-core-asl1.9.2

是不是按照我上面的来System.out.println(response)，没有拿到数据，就是一串包名 com.jd.open.api.sdk.response.kplunion.UnionOpenGoodsJingfenQueryResponse@1df82230不要慌，因为是在Java中集合是打印不出来的，只需要转化为string就能出来数据。这样String json = JSON.toJSONString(response)，就出来数据了咯。
二：在一个util里写一个httpclient方法

public static String doGet(String url) {// 创建Httpclient对象CloseableHttpClient httpclient = HttpClients.createDefault(); String resultString = ""; CloseableHttpResponse response = null; try {// 创建uriURIBuilder builder = new URIBuilder(url); 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200if (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; }

business是入参参数前端传入的就必须是网址格式先调用getBusiness，在传参，method是地址，例jd.union.open.activity.query我用的是一个URL拼接的方法。详情https://jos.jd.com/commontools?id=2，appKey，appSecret写好。

private static String appKey=""; private static String appSecret="";

public String getGoodsJingfenQuery(String business,String method) {SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); //设置日期格式String date = df.format(new Date()); // new Date()为获取当前系统时间，也可使用当前时间戳String rc =getBusinessnot(business); //把入参参数转化成json格式String sj =getTime(date); //把时间转化网址格式String str =appSecret+"360buy_param_json"+rc+"app_key"+appKey+"method"+method+"sign_methodmd5timestamp"+date+"v1.0"+appSecret; String sign=MD5(str); //获取签名，MD5 32位的加密String url="https://api.jd.com/routerjson?360buy_param_json="+newbusiness+"&app_key="+appKey+"&method="+method+"&sign_method=md5×tamp="+sj+"&v=1.0&sign="+sign; return httpClientUtil.doGet(url,null); }

里面一些方法。

public String getBusiness(String business) {String a = business.replace("{","%7B"); String b = a.replace(":","%3A"); String c = b.replace("}","%7D"); return c.replace("\"","%22"); } public String getBusinessnot(String business) {String a = business.replace("%7B","{"); String b = a.replace("%3A",":"); String c = b.replace("%7D","}"); return c.replace("%22","\""); } public String getTime(String time) {String a = time.replace(" ","+"); return a.replace(":","%3A"); } public String getMD5(String str) {try {MessageDigest md = MessageDigest.getInstance("MD5"); md.update(str.getBytes()); return new BigInteger(1, md.digest()).toString(16); } catch (Exception e) {e.printStackTrace(); return null; }} public 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(); MessageDigest mdInst = MessageDigest.getInstance("MD5"); mdInst.update(btInput); byte[] md = mdInst.digest(); 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; }}

这样就拿到了京东联盟的数据。
有一个毒点，我用带参的httpclient方法map param =new treemap<>(); ，而不是写一长串url，列如param.put("360buy_param_json","{\"goodsReq\":{\"eliteId\":\"1\"}}"); 我试了传过去报json转化异常，不知道咋解决。
到此这篇关于Java获取京东联盟API数据的文章就介绍到这了。希望对大家的学习有所帮助，也希望大家多多支持脚本之家。