Flink httpclient sink-优快云博客

本文介绍如何使用Flink实现HTTP Sink，将实时计算结果发送到HTTP服务。通过具体代码示例展示了如何配置HTTP客户端、构建请求并获取响应。

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前几天,发愁怎么样把flink实时计算的结果展示到UI上,所以就有了我接下来研究的 flink httpsink

依赖:

   <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>4.5.5</version>
        </dependency>

代码:

public class HttpSink implements SinkFunction<SdkLampStatusDto> {



    @Override
    public void invoke(SdkLampStatusDto data, Context context) throws Exception {
        CloseableHttpClient client = HttpClients.createDefault();
        URIBuilder uriBuilder = new URIBuilder("http://localhost:8080/doGetControllerTwo?crossId="+data.getCrossId() + "&phaseNo="+data.getPhaseNo() +"&lampStatus="+data.getLampStatus() + "&lastSecond="+data.getLastSecond());

        HttpPost httpPost = new HttpPost();
        HttpGet httpGet = new HttpGet(uriBuilder.build());
        httpGet.addHeader("Content-Type", "application/json");

        RequestConfig requestConfig = RequestConfig
                .custom()
                .setConnectTimeout(35000)
                .setConnectionRequestTimeout(35000)
                .setSocketTimeout(60000)
                .build();

        httpPost.setConfig(requestConfig);
        CloseableHttpResponse response = client.execute(httpGet);
        Thread.sleep(500);
        int statusCode = response.getStatusLine().getStatusCode();

        HttpEntity entity = response.getEntity();
        String str = EntityUtils.toString(entity);

        response.close();
        client.close();
    }
}

接下来测试: 这里你需要写个springboot的服务接口,接口的地址和flink httpsink中的地址是一样的,

测试代码部分: springboot 8080

@GetMapping("/doGetControllerTwo")
    public void getData(String crossId,Integer phaseNo,Integer lampStatus,Integer lastSecond){

        System.out.println(crossId+" "+phaseNo+" "+lampStatus + " "+lastSecond);

    }