Rest Template Test

public class RestTemplateTest {
    int count = 10; // 执行次数
    String ua = ""; 
    // 此 UA okHttp3 会报异常。
//    String ua = " jdapp;android;8.5.12;10;869939042546399-24da3300f7a2;network/4g;model/VCE-AL00;addressid/0;aid/3ef52e7359958728;oaid/7f77ff9b-757e-2241-ff3b-bdfd6a6ff8ed;osVer/29;appBuild/73078;psn/869939042546399-24da3300f7a2|173;psq/14;uid/869939042546399-24da3300f7a2;adk/;ads/;pap/JA2015_311210|8.5.12|ANDROID 10;osv/10;pv/172.17;jdv/0|kong|t_1000170135|tuiguang|notset|1589769462067|1589769462;ref/https://airtickets.jd.com/?fromtype=search&depCity=å\u008C\u0097京&arrCity=ä¸\u008Aæµ·&lineType=OW&lng=104.165616&lat=30.83199&sid=3463647525f7fdc6c376e6351ab834aw&un_area=22_1930_49314_49351;partner/huawei;apprpd/Search_ProductList;Mozilla/5.0 (Linux; Android 10; VCE-AL00 Build/HUAWEIVCE-AL00; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.126 MQQBrowser/6.2 TBS/045136 Mobile Safari/537.36";

    String url = "https://www.baidu.com";
//    String url = "https://www.jd.com";

    @Test
    public void test() throws SSLException {

        RestTemplate httpClient = new RestTemplate();

        for (int i = 0; i < 3; i++) {
            httpClient.setRequestFactory(simple());
            this.request(httpClient);

            httpClient.setRequestFactory(okHttpClient3());
            this.request(httpClient);

            httpClient.setRequestFactory(apcheHttp());
            this.request(httpClient);

            httpClient.setRequestFactory(apcheHttpAsync());
            this.request(httpClient);


            httpClient.setRequestFactory(netty());
            this.request(httpClient);

//            httpClient.setRequestFactory(okHttpClient());
//            this.request(httpClient);

            System.out.println("--------------------------------");
        }
    }


    private void request(RestTemplate httpclient) {
        System.out.println("");
        System.out.println(httpclient.getRequestFactory().getClass().getSimpleName() + "--");
        long start, end;


        long total = 0, max = Long.MIN_VALUE, min = Long.MAX_VALUE;


        for (int i = 0; i < count; i++) {
            start = System.nanoTime();

            RequestEntity input = RequestEntity.get(URI.create(url + "/?ts=" + i)).header(HttpHeaders.USER_AGENT, ua).build();

            ResponseEntity<String> output = httpclient.exchange(input, String.class);
            String body = output.getBody(); // 确保进行了 content read

            end = System.nanoTime() - start;

            if (end > max) {
                max = end;
            }
            if (end < min) {
                min = end;
            }
            total += end;

        }
        System.out.printf("共执行 %s 次，" +
                        "总耗时：%s ms(%s ns)，" +
                        "平均耗时：%s ms(%s ns)，" +
                        "最长耗时：%s ms(%s ns)，" +
                        "最短耗时：%s ms(%s ns) \n",
                count,
                TimeUnit.NANOSECONDS.toMillis(total), total,
                TimeUnit.NANOSECONDS.toMillis(total / count), total / count,
                TimeUnit.NANOSECONDS.toMillis(max), max,
                TimeUnit.NANOSECONDS.toMillis(min), min,
                ""
        );

    }


    private ClientHttpRequestFactory simple() {
        SimpleClientHttpRequestFactory factory = new SimpleClientHttpRequestFactory();
        factory.setConnectTimeout(500);
        return factory;
    }

    private ClientHttpRequestFactory okHttpClient3() {
        OkHttp3ClientHttpRequestFactory factory = new OkHttp3ClientHttpRequestFactory();
        factory.setConnectTimeout(500);
        return factory;
    }

    private ClientHttpRequestFactory okHttpClient() {
        OkHttpClientHttpRequestFactory factory = new OkHttpClientHttpRequestFactory();
        factory.setConnectTimeout(500);
        return factory;
    }

    private ClientHttpRequestFactory apcheHttp() {
        HttpComponentsClientHttpRequestFactory factory = new HttpComponentsClientHttpRequestFactory();
        factory.setConnectTimeout(500);
        return factory;
    }

    private ClientHttpRequestFactory apcheHttpAsync() {
        HttpComponentsAsyncClientHttpRequestFactory factory = new HttpComponentsAsyncClientHttpRequestFactory();
        factory.setConnectTimeout(500);
        return factory;
    }

    private ClientHttpRequestFactory netty() throws SSLException {
        Netty4ClientHttpRequestFactory factory = new Netty4ClientHttpRequestFactory();
        factory.setConnectTimeout(500);
        factory.setSslContext(SslContextBuilder.forClient().build());
        return factory;
    }

}