java - Java HTTP 请求超时 2 分钟

Question

我正在尝试从 Java 向 REST 服务进行 HTTP 调用。一切都很好，直到通话时间超过 120 秒。如果请求时间少于 120 秒，我可以成功地向同一服务发出请求。我的代码如下：

    URL url = new URL("https://service.myurl.com/my-endpoint");
    HttpURLConnection con = (HttpURLConnection) url.openConnection();
    con.setRequestMethod("POST");
 
    con.setRequestProperty("Content-Type", "application/json; utf-8");
    con.setReadTimeout(0);
    con.setConnectTimeout(0);
    con.setDoOutput(true);
    con.setDoInput(true);
 
    System.out.println(con.getReadTimeout() + "RT");
    System.out.println(con.getConnectTimeout() + "CT");
    System.out.println(System.getProperty("sun.net.client.defaultReadTimeout") + "SUN RT");
    System.out.println(System.getProperty("sun.net.client.defaultConnectTimeout") + "SUN CT");
    // System.out.println("Connection expires... " + con.getExpiration());
 
    System.out.println("Getting output stream...");
    System.out.println(System.getProperty("my-json"));
    try (OutputStream os = con.getOutputStream()) {
        byte[] input = System.getProperty("my-json").getBytes("utf-8");
        os.write(input, 0, input.length);
    }
 
    System.out.println("Getting response...");
    StringBuilder response = null;
    
    //
    // THE REQUEST FAILS IN THE FOLLOWING LINE,
    // WHEN TRYING TO RETRIEVE THE INPUT STREAM
    // WITH THE RESPONSE FROM THE SERVER
    //
    try (BufferedReader br = new BufferedReader(new InputStreamReader(con.getInputStream(), "utf-8"))) {
        response = new StringBuilder();
        String responseLine = null;
        while ((responseLine = br.readLine()) != null) {
            response.append(responseLine.trim());
        }
        System.out.println(response.toString());
    }

我得到的例外如下：

javax.net.ssl|WARNING|01|main|2021-03-16 15:49:10.285 UTC|Logger.java:765|handling exception (
"throwable" : {
  java.net.SocketException: Connection reset
      at java.net.SocketInputStream.read(SocketInputStream.java:210)
      at java.net.SocketInputStream.read(SocketInputStream.java:141)
      at sun.security.ssl.SSLSocketInputRecord.read(SSLSocketInputRecord.java:457)
      at sun.security.ssl.SSLSocketInputRecord.bytesInCompletePacket(SSLSocketInputRecord.java:68)
      at sun.security.ssl.SSLSocketImpl.readApplicationRecord(SSLSocketImpl.java:1095)
      at sun.security.ssl.SSLSocketImpl.access$200(SSLSocketImpl.java:72)
      at sun.security.ssl.SSLSocketImpl$AppInputStream.read(SSLSocketImpl.java:815)
      at java.io.BufferedInputStream.fill(BufferedInputStream.java:246)
      at java.io.BufferedInputStream.read1(BufferedInputStream.java:286)
      at java.io.BufferedInputStream.read(BufferedInputStream.java:345)
      at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:735)
      at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:678)
      at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1593)
      at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1498)
      at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:268)
      at com.myurl.test.App.main(App.java:44)}
)
javax.net.ssl|SEVERE|01|main|2021-03-16 15:49:10.286 UTC|Logger.java:765|Fatal (UNEXPECTED_MESSAGE): Connection reset (
"throwable" : {
  java.net.SocketException: Connection reset
      at java.net.SocketInputStream.read(SocketInputStream.java:210)
      at java.net.SocketInputStream.read(SocketInputStream.java:141)
      at sun.security.ssl.SSLSocketInputRecord.read(SSLSocketInputRecord.java:457)
      at sun.security.ssl.SSLSocketInputRecord.bytesInCompletePacket(SSLSocketInputRecord.java:68)
      at sun.security.ssl.SSLSocketImpl.readApplicationRecord(SSLSocketImpl.java:1095)
      at sun.security.ssl.SSLSocketImpl.access$200(SSLSocketImpl.java:72)
      at sun.security.ssl.SSLSocketImpl$AppInputStream.read(SSLSocketImpl.java:815)
      at java.io.BufferedInputStream.fill(BufferedInputStream.java:246)
      at java.io.BufferedInputStream.read1(BufferedInputStream.java:286)
      at java.io.BufferedInputStream.read(BufferedInputStream.java:345)
      at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:735)
      at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:678)
      at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1593)
      at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1498)
      at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:268)
      at com.myurl.test.App.main(App.java:44)}
)

我尝试将连接和读取超时设置为 0、最大整数值以及以下 JVM 参数... -Dsun.net.client.defaultReadTimeout=600000 -Dsun.net.client.defaultConnectTimeout=600000（10 分钟）。没有什么对我有用。

我很确定问题出在 Java 的执行上，因为在同一台服务器上，使用 CURL 我能够执行需要超过 2 分钟的相同请求。

对此的任何帮助表示赞赏。

谢谢你。

编辑 2021-03-16

该服务能够接收请求并对其进行处理。问题是当我们尝试从服务读取响应时。

标签： javatimeouthttpurlconnectionsocketexception