黄金价格数据API

API提供方：https://www.nowapi.com/

国际金价实时(盎司)：https://www.nowapi.com/api/finance.gsgold

国际金价实时(盎司)

作用：查询上海黄金交易所黄金价格、国际公制金价、国际贵金属期货价、工行纸黄金等。

测试示例: http://api.k780.com/?app=finance.gold_price&goldid=1201&appkey=10003&sign=b59bc3ef6191eb9f747dd4e83c99f2a4&format=json (示例中sign会不定期调整)

调用参数：

返回格式：

{    "result": {        "dtList": {            "1201": {            "sell_price": "1716.73",            "high_price": "1719.2",            "goldid": "1201",            "uptime": "2022-07-22 13:58:01",            "varietynm": "现货黄金",            "variety": "XAU",            "change_margin": "-0.14%",            "yesy_price": "1718.65",            "buy_price": "1716.3",            "change_price": "-2.35",            "open_price": "1717.84",            "low_price": "1712.77",            "last_price": "1716.3"        }    },    "dtQuery": "1201",    "dtCount": "1"    },    "success": "1"}

调用代码案例

pom.xml

<dependencies>    <dependency>        <groupId>cn.hutool</groupId>        <artifactId>hutool-all</artifactId>        <version>5.5.9</version>    </dependency>    <dependency>        <groupId>org.apache.httpcomponents.client5</groupId>        <artifactId>httpclient5</artifactId>        <version>5.1</version>    </dependency>    <dependency>        <groupId>org.apache.httpcomponents.client5</groupId>        <artifactId>httpclient5-fluent</artifactId>        <version>5.0.3</version>    </dependency></dependencies>

调用方式1：

import org.apache.commons.codec.Charsets;import org.apache.hc.client5.http.classic.methods.HttpPost;import org.apache.hc.client5.http.entity.UrlEncodedFormEntity;import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;import org.apache.hc.client5.http.impl.classic.CloseableHttpResponse;import org.apache.hc.client5.http.impl.classic.HttpClients;import org.apache.hc.core5.http.HttpEntity;import org.apache.hc.core5.http.NameValuePair;import org.apache.hc.core5.http.io.entity.EntityUtils;import org.apache.hc.core5.http.message.BasicNameValuePair;import java.util.ArrayList;import java.util.List;public class HttpClientClassicApp {    public static void main(String[] args) throws Exception {        CloseableHttpClient httpClient = HttpClients.createDefault();        HttpPost httpPost = new HttpPost("http://api.k780.com/");        List<NameValuePair> nvps = new ArrayList<>();        nvps.add(new BasicNameValuePair("app", "finance.gold_price"));        nvps.add(new BasicNameValuePair("goldid", "1201"));        nvps.add(new BasicNameValuePair("appkey", "10003"));        nvps.add(new BasicNameValuePair("sign", "b59bc3ef6191eb9f747dd4e83c99f2a4"));        nvps.add(new BasicNameValuePair("format", "json"));        httpPost.setEntity(new UrlEncodedFormEntity(nvps, Charsets.UTF_8));        CloseableHttpResponse response = httpClient.execute(httpPost);        System.out.println(response.getCode() + " " + response.getReasonPhrase());        HttpEntity entity = response.getEntity();        String content = EntityUtils.toString(entity);        System.out.println(content);        EntityUtils.consume(entity);    }}

调用方式2：

import cn.hutool.json.JSONObject;import cn.hutool.json.JSONUtil;import org.apache.hc.client5.http.async.methods.*;import org.apache.hc.client5.http.config.RequestConfig;import org.apache.hc.client5.http.impl.async.CloseableHttpAsyncClient;import org.apache.hc.client5.http.impl.async.HttpAsyncClients;import org.apache.hc.client5.http.impl.nio.PoolingAsyncClientConnectionManager;import org.apache.hc.client5.http.impl.nio.PoolingAsyncClientConnectionManagerBuilder;import org.apache.hc.core5.concurrent.FutureCallback;import org.apache.hc.core5.http.Method;import org.apache.hc.core5.http.message.StatusLine;import org.apache.hc.core5.pool.PoolConcurrencyPolicy;import org.apache.hc.core5.reactor.IOReactorConfig;import org.apache.hc.core5.util.TimeValue;import org.apache.hc.core5.util.Timeout;import java.util.concurrent.Future;import java.util.concurrent.TimeUnit;public class HttpClient5App {    public static void main(String[] args) {        // 异步应用配置        IOReactorConfig ioReactorConfig = IOReactorConfig.custom()                .setSoTimeout(Timeout.ofMilliseconds(250))          // 超时时间                .setSelectInterval(TimeValue.ofMilliseconds(50))    // 1.2                .build();        // setSoTimeout()====>连接上一个url，获取response的返回等待时间        // setSelectInterval()====>NIO中设置select的间隔        // 客户端连接配置        PoolingAsyncClientConnectionManager build = PoolingAsyncClientConnectionManagerBuilder.create()                .setPoolConcurrencyPolicy(PoolConcurrencyPolicy.LAX)  // 2.1                .setMaxConnPerRoute(6).build();                       // 2.2        // poolConcurrencyPolicy() ====> STRICT模式通过加锁的方式对,LAX通过cas的方式宽松计数        // 设置STRICT，会使用StrictConnPool实现类；设置LAX ，会使用LaxConnPool实现类        // maxConnPerRoute ====> 每个route最多能有多少个connection        // 创建客户端        CloseableHttpAsyncClient client = HttpAsyncClients.custom()                .setIOReactorConfig(ioReactorConfig)                .setConnectionManager(build)                .disableAutomaticRetries()                .build();        // automaticRetriesDisabled===>关闭自动重试        client.start();        String uri = "http://api.k780.com/";        SimpleHttpRequest httpRequest = SimpleHttpRequest.create(Method.GET.name(), uri);        final SimpleHttpRequest request = SimpleRequestBuilder.copy(httpRequest)                .addParameter("app", "finance.gold_price")                .addParameter("goldid", "1201")                .addParameter("appkey", "10003")                .addParameter("sign", "b59bc3ef6191eb9f747dd4e83c99f2a4")                .addParameter("format", "json")                .build();        request.setHeader("Host", "api.k780.com");        RequestConfig config = RequestConfig.copy(RequestConfig.DEFAULT)                .setConnectTimeout(150, TimeUnit.MILLISECONDS)                .setConnectionRequestTimeout(200, TimeUnit.MILLISECONDS)                .setResponseTimeout(100, TimeUnit.MILLISECONDS).build();        request.setConfig(config);        long start = System.currentTimeMillis();        final Future<SimpleHttpResponse> future = client.execute(                SimpleRequestProducer.create(request),                SimpleResponseConsumer.create(),                new FutureCallback<SimpleHttpResponse>() {                    @Override                    public void completed(final SimpleHttpResponse response) {                        System.out.println(request + "->" + new StatusLine(response));                        System.out.println(response.getBody());                    }                    @Override                    public void failed(final Exception ex) {                        System.out.println(request + "->" + ex);                    }                    @Override                    public void cancelled() {                        System.out.println(request + " cancelled");                    }                });        // 时间计算        try {            SimpleHttpResponse simpleHttpResponse = future.get();            JSONObject jsonObject = JSONUtil.parseObj(simpleHttpResponse.getBodyText());            System.out.println("body=" + jsonObject);            long end = System.currentTimeMillis();            System.out.println("时间差：" + (end - start));        } catch (Exception e) {            long end = System.currentTimeMillis();            System.out.println("时间差：" + (end - start));            System.out.println(e);        }        // 线程等待        try {            Thread.sleep(10000);        } catch (InterruptedException e) {            e.printStackTrace();        }    }}

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