java.net.UnknownHostException:

csdn.net | 9 months ago
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    java.net.UnknownHostException: url

    Stack Overflow | 5 years ago | Rache
    java.net.UnknownHostException: wugateway2pi.westernunion.net

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Root Cause Analysis

  1. java.net.UnknownHostException

    at java.net.PlainSocketImpl.connect()
  2. Java RT
    Socket.connect
    1. java.net.PlainSocketImpl.connect(PlainSocketImpl.java:195)
    2. java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
    3. java.net.Socket.connect(Socket.java:529)
    3 frames
  3. org.apache.nutch
    HttpBase.getProtocolOutput
    1. org.apache.nutch.protocol.http.HttpResponse.<init>(HttpResponse.java:97)
    2. org.apache.nutch.protocol.http.Http.getResponse(Http.java:64)
    3. org.apache.nutch.protocol.http.api.HttpBase.getProtocolOutput(HttpBase.java:225)
    3 frames
  4. Apache Nutch
    Fetcher$FetcherThread.run
    1. org.apache.nutch.fetcher.Fetcher$FetcherThread.run(Fetcher.java:640)
    1 frame