java.net.SocketException: Reset koneksi dalam template spring Rest

Saya punya masalah aneh di sini.

Kode di bawah ini berfungsi dengan baik sampai saya me-restart server kucing jantan di sisi klien. Setelah saya me-restart server kucing jantan (program klien ada di file perang) dengan file perang terbaru dari kode yang sama, itu melemparkan kesalahan di bawah ini. Saya menggunakan JDK 8.

Di bawah ini adalah kode sampel. Dari browser, saya bisa mendapatkan respons dari URL yang digunakan dalam program di bawah ini. tetapi tidak bisa mendapatkan data menggunakan program java atau tukang pos juga.

package com.example.demo;

import org.springframework.boot.CommandLineRunner;
import org.springframework.stereotype.Component;
import org.springframework.web.client.RestTemplate;

@Component
public class TestService implements CommandLineRunner{

    @Override
    public void run(String... args) throws Exception {
        download();
    }

    private void download() {
        System.out.println("Started download");
        try{
            RestTemplate restTemplate = new RestTemplate();
            String url = "https://www.nseindia.com/live_market/dynaContent/live_watch/stock_watch/niftyStockWatch.json";
            byte[] forObject = restTemplate.getForObject(url, byte [].class);
            System.out.println(forObject);
            System.out.println("Downloaded");
        }catch (Exception e) {
            System.out.println("Exception "+ e);
        }
    }

}

Inilah pengecualian yang diajukan:

org.springframework.web.client.ResourceAccessException: I/O error on GET request for "https://www.nseindia.com/live_market/dynaContent/live_watch/stock_watch/niftyStockWatch.json": Connection reset; nested exception is java.net.SocketException: Connection reset
    at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:751)
    at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:677)
    at org.springframework.web.client.RestTemplate.getForEntity(RestTemplate.java:345)
    at com.sudhasoft.service.impl.StocksServiceImpl.getNiftyData(StocksServiceImpl.java:183)
    at com.sudhasoft.service.impl.StocksServiceImpl.getNifty500Data(StocksServiceImpl.java:154)
    at com.sudhasoft.service.impl.PatternServiceImpl.getDataBySignal(PatternServiceImpl.java:444)
    at com.sudhasoft.service.impl.PatternServiceImpl.loadDataOnInit(PatternServiceImpl.java:1090)
    at com.sudhasoft.service.CacheServiceImpl.initCache(CacheServiceImpl.java:29)
    at com.sudhasoft.scheduler.job.CacheJob.clearCache(CacheJob.java:41)
    at com.sudhasoft.scheduler.job.CacheJob.executeJob(CacheJob.java:25)
    at com.sudhasoft.scheduler.StockScheduler$1.run(StockScheduler.java:120)
Caused by: java.net.SocketException: Connection reset
    at java.net.SocketInputStream.read(Unknown Source)
    at java.net.SocketInputStream.read(Unknown Source)
    at sun.security.ssl.InputRecord.readFully(Unknown Source)
    at sun.security.ssl.InputRecord.read(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.readDataRecord(Unknown Source)
    at sun.security.ssl.AppInputStream.read(Unknown Source)
    at okio.Okio$2.read(Okio.java:139)
    at okio.AsyncTimeout$2.read(AsyncTimeout.java:237)
    at okio.RealBufferedSource.indexOf(RealBufferedSource.java:345)
    at okio.RealBufferedSource.readUtf8LineStrict(RealBufferedSource.java:217)
    at okhttp3.internal.http1.Http1Codec.readHeaderLine(Http1Codec.java:212)
    at okhttp3.internal.http1.Http1Codec.readResponseHeaders(Http1Codec.java:189)
    at okhttp3.internal.http.CallServerInterceptor.intercept(CallServerInterceptor.java:88)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
    at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:45)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
    at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
    at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
    at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:125)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
    at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:200)
    at okhttp3.RealCall.execute(RealCall.java:77)
    at org.springframework.http.client.OkHttp3ClientHttpRequest.executeInternal(OkHttp3ClientHttpRequest.java:73)
    at org.springframework.http.client.AbstractBufferingClientHttpRequest.executeInternal(AbstractBufferingClientHttpRequest.java:48)
    at org.springframework.http.client.AbstractClientHttpRequest.execute(AbstractClientHttpRequest.java:53)
    at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:742)
    ... 10 common frames omitted

Ini sepertinya disebabkan oleh a masalah firewall .

Untuk mengatasi masalah ini, Anda harus menggunakan Proxy Server. Anda dapat menambahkan server proxy dan port menggunakan 2 baris kode berikut:

System.setProperty("proxyHost", "proxyServer.proxy.com");
System.setProperty("proxyPort", "9801");

Jawaban paling sederhana adalah ketika Anda me-restart tomcat hanya Anda menutup soket dan kemudian Anda mencoba mengirim lebih banyak data ke soket tertutup. itulah sebabnya Anda mendapatkan pengecualian IO karena Anda tidak dapat menulis data