java.lang.UnsupportedOperationException

GitHub | zifangsky | 2 weeks ago
  1. 0

    GitHub comment 402#270551950

    GitHub | 2 weeks ago | zifangsky
    java.lang.UnsupportedOperationException
  2. 0

    GitHub comment 144#59683833

    GitHub | 2 years ago | zhugw
    java.lang.UnsupportedOperationException
  3. 0

    GitHub comment 415#266204061

    GitHub | 1 month ago | dyhack
    java.lang.NullPointerException
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  5. 0

    请问为什么会出现Exception in thread "pool-1-thread-1" java.lang.NoSuchMethodError: com.google.common.collect.Maps.asMapEntryIterator

    GitHub | 11 months ago | fonxian
    java.lang.NoSuchMethodError: com.google.common.collect.Maps.asMapEntryIterator(Ljava/util/Set;Lcom/google/common/base/Function;)Ljava/util/Iterator;

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    Root Cause Analysis

    1. java.lang.UnsupportedOperationException

      No message provided

      at us.codecraft.webmagic.selector.PlainText.links()
    2. us.codecraft.webmagic
      CountableThreadPool$1.run
      1. us.codecraft.webmagic.selector.PlainText.links(PlainText.java:52)
      2. us.codecraft.webmagic.model.ModelPageProcessor.extractLinks(ModelPageProcessor.java:67)
      3. us.codecraft.webmagic.model.ModelPageProcessor.process(ModelPageProcessor.java:49)
      4. us.codecraft.webmagic.Spider.processRequest(Spider.java:420)
      5. us.codecraft.webmagic.Spider$1.run(Spider.java:322)
      6. us.codecraft.webmagic.selector.thread.CountableThreadPool$1.run(CountableThreadPool.java:74)
      6 frames
    3. Java RT
      Thread.run
      1. java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
      2. java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
      3. java.lang.Thread.run(Unknown Source)
      3 frames