java报错：Exception in thread "main" java.lang.NoSuchFieldError: INSTANCE

本文转载自查看原文 2019-01-01 11:01 3840

Exception in thread "main" java.lang.NoSuchFieldError: INSTANCE
at org.apache.http.conn.ssl.SSLConnectionSocketFactory.<clinit>(SSLConnectionSocketFactory.java:144)
at us.codecraft.webmagic.downloader.HttpClientGenerator.<init>(HttpClientGenerator.java:38)
at us.codecraft.webmagic.downloader.HttpClientDownloader.<init>(HttpClientDownloader.java:52)
at us.codecraft.webmagic.Spider.initComponent(Spider.java:280)
at us.codecraft.webmagic.Spider.run(Spider.java:305)
at pachong.Getgov.main(Getgov.java:31)

原因：

对java项目构建路径发现有httpclient包和httpcore包都有两个，可能导致冲突。（具体原因没有了解）

解决：

删除版本低的httpclient包和httpcore包

免责声明！

本站转载的文章为个人学习借鉴使用，本站对版权不负任何法律责任。如果侵犯了您的隐私权益，请联系本站邮箱yoyou2525@163.com删除。

猜您在找 java.lang.NoSuchFieldError: INSTANCE 坑爹的 HTTPClient java.lang.NoSuchFieldError: INSTANCE java.lang.NoSuchFieldError异常 java.lang.NoSuchFieldError: org.apache.http.message.BasicLineFormatter.INSTANCE Caused by: java.lang.NoSuchFieldError: TRACE Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 0 Exception in thread "main" java.lang.ClassCastException Exception in thread "main" java.lang.NullPointerException springBoot集成Elasticsearch抛出Factory method 'restHighLevelClient' threw exception; nested exception is java.lang.NoSuchFieldError: IGNORE_DEPRECATIONS springBoot集成Elasticsearch抛出Factory method 'restHighLevelClient' threw exception; nested exception is java.lang.NoSuchFieldError: IGNORE_DEPRECATIONS