关于第三方接口调用返回值问题？

Question

这是第三方接口返回值类型：

{ "data": { "standard": "RO-185I智能-新款", "filter_period": "", "channel": "电商", "type": "1", "u9_code": "104011-0003", "pro_list": "", "pro_install_type": "", "model": "", "info": "", "pro_filter9": "", "pro_filter8": "", "pro_filter7": "", "pro_filter6": "", "pro_filter5": "190005-0048", "pro_filter4": "190007-0013", "pro_filter3": "190005-0002", "pro_filter2": "190004-0004", "pro_filter1": "190002-0003", "water_effect_level": "", "weight": "", "market_date": "2017.11", "suit_filter_count": "", "hygiene_cert": "", "size": "197*386*464", "name": "RO-185I智能-新款", "pro_filter10": "", "pro_level": "", "status": "1", "suit_filter_list": "", "electric_cert": "", "pic1": "", "is_iot": "", "pro_org": "", "pic2": "", "suning_code": "", "pic3": "", "amount": "", "pro_water": "", "pro_sublist": "", "pro_flux": "", "need_install": "1", "pro_power": "", "jingdong_code": "", "u8_code": "703100" }, "status": { "code": "E0", "message": "成功" } }

我请求后的数据为：String类型的字符串。

 

如何返回解析成指定的格式？

Answer 1

看看 OpenFeign 的例子：

interface GitHub {
  @RequestLine("GET /repos/{owner}/{repo}/contributors")
  List<Contributor> contributors(@Param("owner") String owner, @Param("repo") String repo);
}

public static class Contributor {
  String login;
  int contributions;
}

public class MyApp {
  public static void main(String... args) {
    GitHub github = Feign.builder()
                         .decoder(new GsonDecoder())
                         .target(GitHub.class, "https://api.github.com");
  
    // Fetch and print a list of the contributors to this library.
    List<Contributor> contributors = github.contributors("OpenFeign", "feign");
    for (Contributor contributor : contributors) {
      System.out.println(contributor.login + " (" + contributor.contributions + ")");
    }
  }
}

是不是很酷?

Answer 2

写一个实体类，对应第三方接口的返回的JSON数据格式。

用JSON解析数据，得到实体类，返回实体类给业务调用着。

如果很多这样的接口，建议你试试#OpenFeign# https://github.com/OpenFeign/feign

这货可以帮你省很多事。

Answer 3

JsonObject

Answer 4

CloseableHttpClient 可以用单例，重复创建浪费资源。

Answer 5

HTTP请求代码：

public class HttpClientUtil {
    /**
     * 带参数的get请求
     * @param url
     * @param param
     * @return String
     */
    public static String doGet(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;
    }

Answer 6

@Override
public String findProductsAndFilters(String code) {

    Map<String,String> params = new LinkedHashMap<>();
   //数据查询账户
    String aid=CemUtils.OrderInter.AID_;
    //数据提交时间戳
    long t = System.currentTimeMillis()/1000;
    String ts =String.valueOf(t);
    StringBuilder builder = new StringBuilder("");
    builder.append("aid").append(aid).append("procode").append(code).append("ts").append(ts).append("63f737a925728cfe");
    String sign = MD5Util.MD5Encode(builder.toString(),"utf-8");
    String url = "XXX";
    params.put("aid", CemUtils.OrderInter.AID_);
    params.put("procode",code);
    params.put("ts",ts);
    params.put("sign",sign);


    String result = HttpClientUtil.doGet(url, params);
    return result;
}

 

Answer 7

接口代码：